Document and Entity Information (USD $) In Billions, except Share data, unless otherwise specified	12 Months Ended
	Jul. 01, 2011	Aug. 03, 2011	Dec. 31, 2010
Document and Entity Information [Abstract]
Entity Registrant Name	WESTERN DIGITAL CORP
Entity Central Index Key	0000106040
Document Type	10-K
Document Period End Date	Jul. 01, 2011
Amendment Flag	false
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--07-01
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 7.9
Entity Common Stock, Shares Outstanding (actual number)		233,191,524

Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Jul. 01, 2011	Jul. 02, 2010
Current assets:
Cash and cash equivalents	$ 3,490	$ 2,734
Accounts receivable, net	1,206	1,256
Inventories	577	560
Other current assets	214	170
Total current assets	5,487	4,720
Property, plant and equipment, net	2,224	2,159
Goodwill	151	146
Other intangible assets, net	71	88
Other non-current assets	185	215
Total assets	8,118	7,328
Current liabilities:
Accounts payable	1,545	1,507
Accrued expenses	349	281
Accrued warranty	132	129
Current portion of long-term debt	144	106
Total current liabilities	2,170	2,023
Long-term debt	150	294
Other liabilities	310	302
Total liabilities	2,630	2,619
Commitments and contingencies (Notes 4 and 5)
Shareholders' equity:
Preferred stock, $.01 par value; authorized - 5 shares; issued and outstanding - none	0	0
Common stock, $.01 par value; authorized - 450 shares; issued and outstanding - 233 and 231 shares, respectively	2	2
Additional paid-in capital	1,091	1,022
Accumulated other comprehensive income (loss)	(5)	11
Retained earnings	4,400	3,674
Total shareholders' equity	5,488	4,709
Total liabilities and shareholders' equity	$ 8,118	$ 7,328

Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Per Share data, unless otherwise specified	Jul. 01, 2011	Jul. 02, 2010
Shareholders' equity:
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5	5
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	450	450
Common stock, shares issued	233	231
Common stock, shares outstanding	233	231

Total number of shares of common stock held by shareholders. May be all or portion of the number of common shares authorized. These shares represent the ownership interest of the common shareholders. Shares outstanding equals shares issued minus shares held in treasury and other adjustments, if any.

+ References+ Details

- Definition

Face amount or stated value per share of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer); generally not indicative of the fair market value per share.

+ References+ Details

Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Jul. 01, 2011	Jul. 02, 2010	Jul. 03, 2009
Consolidated Statements of Income [Abstract]
Revenue, net	$ 9,526	$ 9,850	$ 7,453
Cost of revenue	7,735	7,449	6,116
Gross margin	1,791	2,401	1,337
Operating expenses:
Research and development	703	611	509
Selling, general and administrative	307	265	201
Acquired in-process research and development			14
Restructuring and other, net			94
Total operating expenses	1,010	876	818
Operating income	781	1,525	519
Other income (expense):
Interest income	9	4	9
Interest and other expense	(10)	(9)	(27)
Total other expense, net	(1)	(5)	(18)
Income before income taxes	780	1,520	501
Income tax provision	54	138	31
Net income	$ 726	$ 1,382	$ 470
Income per common share:
Basic	$ 3.14	$ 6.06	$ 2.12
Diluted	$ 3.09	$ 5.93	$ 2.08
Weighted average shares outstanding:
Basic	231	228	222
Diluted	235	233	226

Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 01, 2011	Jul. 02, 2010	Jul. 03, 2009
Cash flows from operating activities
Net income	$ 726	$ 1,382	$ 470
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization	602	510	479
Stock-based compensation	69	60	47
Deferred income taxes	20	27	24
Loss on investments			10
Acquired in-process research and development			14
Non-cash portion of restructuring and other, net			63
Changes in:
Accounts receivable, net	50	(330)	92
Inventories	(17)	(148)	88
Accounts payable	178	270	(33)
Accrued expenses	71	67	23
Other assets and liabilities	(44)	104	28
Net cash provided by operating activities	1,655	1,942	1,305
Cash flows from investing activities
Purchases of property, plant and equipment	(778)	(737)	(519)
Proceeds from the sale of property, plant and equipment			29
Acquisitions, net of cash acquired	(15)	(253)	(63)
Sales and maturities of investments		4	2
Net cash used in investing activities	(793)	(986)	(551)
Cash flows from financing activities
Issuance of stock under employee stock plans	58	79	28
Taxes paid on vested stock awards under employee stock plans	(8)	(17)	(5)
Increase (decrease) in excess tax benefits from employee stock plans		4	(24)
Repurchases of common stock	(50)		(36)
Repayment of debt	(106)	(82)	(27)
Net cash used in financing activities	(106)	(16)	(64)
Net increase in cash and cash equivalents	756	940	690
Cash and cash equivalents, beginning of year	2,734	1,794	1,104
Cash and cash equivalents, end of year	3,490	2,734	1,794
Supplemental disclosure of cash flow information:
Cash paid for income taxes	10	7	11
Cash paid for interest	$ 6	$ 8	$ 14

Consolidated Statements of Shareholder's Equity and Comprehensive Income (USD $) In Millions	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Total Comprehensive Income [Member]
Beginning balance at Jun. 27, 2008	$ 2,696	$ 2	$ (22)	$ 906	$ (12)	$ 1,822
Beginning balance, shares at Jun. 27, 2008		225	(1)
Employee stock plans	25		58	(33)
Employee stock plans, shares			2
Stock based compensation	47			47
Increase (Decrease) in excess tax benefits from employee stock plans	(24)			(24)
Repurchase of common stock	(36)		(36)
Repurchase of common stock, shares			(1.0)
Net income	470					470	470
Unrealized gain/loss on foreign exchange contracts	14				14		14
Ending balance at Jul. 03, 2009	3,192	2	0	896	2	2,292	484
Ending balance, shares at Jul. 03, 2009		225	0
Employee stock plans	62			62
Employee stock plans, shares		6
Stock based compensation	60			60
Increase (Decrease) in excess tax benefits from employee stock plans	4			4
Net income	1,382					1,382	1,382
Unrealized gain/loss on foreign exchange contracts	9				9		9
Ending balance at Jul. 02, 2010	4,709	2	0	1,022	11	3,674	1,391
Ending balance, shares at Jul. 02, 2010		231	0
Employee stock plans	50		50
Employee stock plans, shares		2	2
Stock based compensation	69			69
Repurchase of common stock	(50)		(50)
Repurchase of common stock, shares			(2.0)
Net income	726					726	726
Unrealized gain/loss on foreign exchange contracts	(16)				(16)		(16)
Ending balance at Jul. 01, 2011	$ 5,488	$ 2	$ 0	$ 1,091	$ (5)	$ 4,400	$ 710
Ending balance, shares at Jul. 01, 2011		233	0

Organization and Summary of Significant Accounting Policies

12 Months Ended

Jul. 01, 2011

Organization and Summary of Significant Accounting Policies and Supplemental Financial Statement Data [Abstract]

Organization and Summary of Significant Accounting Policies

Note 1. Organization and Summary of Significant Accounting Policies

Western Digital Corporation (the “Company” or “Western Digital” or “WD”) is a global provider of solutions for the collection, storage, management, protection and use of digital content, including audio and video. The Company’s principal products are hard drives, which are devices that use one or more rotating magnetic disks (“magnetic media”) to store and allow fast access to data. Hard drives are currently the primary storage medium for digital content. The Company’s hard drives are used in desktop and notebook computers, corporate and cloud computing data centers, home entertainment equipment and stand-alone consumer storage devices. In addition to hard drives, the Company’s other products include solid-state drives and home entertainment and networking products.

The Company has prepared its consolidated financial statements in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) and has adopted accounting policies and practices which are generally accepted in the industry in which it operates. The Company’s significant accounting policies are summarized below.

Fiscal Year

The Company has a 52 or 53-week fiscal year. The 2011 fiscal year which ended on July 1, 2011 consisted of 52 weeks. The 2010 and 2009 fiscal years, which ended on July 2, 2010 and July 3, 2009, respectively, consisted of 52 and 53 weeks each, respectively.

Basis of Presentation

The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. The accounts of foreign subsidiaries have been remeasured using the U.S. dollar as the functional currency. As such, gains or losses resulting from remeasurement of these accounts from local currencies into U.S. dollars are reflected in the results of operations. These gains and losses were immaterial to the consolidated financial statements.

On June 30, 2010, the Company acquired the magnetic media sputtering operations of Hoya Corporation and Hoya Magnetics Singapore Pte. Ltd (together, “Hoya”). On March 27, 2009, the Company acquired SiliconSystems, Inc. (“SiliconSystems”). The acquisitions are further described in Note 14. The results of operations of Hoya and SiliconSystems since the dates of their acquisitions are included in the consolidated financial statements.

Cash and Cash Equivalents

The Company’s cash equivalents represent highly liquid investments in money market funds, which are invested in U.S. Treasury securities, U.S. Treasury bills and U.S. Government agency securities with original maturities when purchased of three months or less.

Investments

The Company’s investments consist of auction-rate securities, which are primarily backed by insurance products with original maturities greater than three months. The Company has classified these investments as available-for-sale securities and they are carried at fair value within other non-current assets in the consolidated balance sheets.

Fair Value of Financial Instruments

The carrying amounts of cash equivalents, accounts receivable, investments, accounts payable and accrued expenses approximate fair value for all periods presented because of the short-term maturity of these assets and liabilities or, in the case of investments, these are recorded using appropriate market information. The carrying amount of debt approximates fair value because of its variable interest rate.

Concentration of Credit Risk

The Company sells its products to computer manufacturers, resellers and retailers throughout the world. The Company performs ongoing credit evaluations of its customers’ financial condition and generally requires no collateral. The Company maintains allowances for potential credit losses, and such losses have historically been within management’s expectations. At any given point in time, the total amount outstanding from any one of a number of its customers may be individually significant to the Company’s financial results. At July 1, 2011 and July 2, 2010, the Company had reserves for potential credit losses of $5 million and $6 million, respectively, and net accounts receivable of $1.2 billion and $1.3 billion, respectively.

The Company also has cash equivalent and investment policies that limit the amount of credit exposure to any one financial institution or investment instrument and requires that investments be made only with financial institutions or in investment instruments evaluated as highly credit-worthy.

Inventory

The Company values inventories at the lower of cost (first-in, first out and weighted average methods) or net realizable value. The first-in, first-out (“FIFO”) method is used to value the cost of the majority of the Company’s inventories, while the weighted-average method is used to value precious metal inventories. Weighted-average cost is calculated based upon the cost of precious metals at the time they are received by the Company. The Company has determined that it is not practicable to assign specific costs to individual units of precious metals and, as such, precious metals are relieved from inventory based on the weighted-average cost of the inventory at the time the inventory is used in production. The weighted average method of valuing precious metals does not materially differ from a FIFO method. As of July 1, 2011 and July 2, 2010, 85% and 82% of the inventory was valued using the FIFO method with the remainder valued using the weighted average method. Inventory write-downs are recorded for the valuation of inventory at the lower of cost or net realizable value by analyzing market conditions and estimates of future sales prices as compared to inventory costs and inventory balances.

The Company evaluates inventory balances for excess quantities and obsolescence on a regular basis by analyzing estimated demand, inventory on hand, sales levels and other information, and reduces inventory balances to net realizable value for excess and obsolete inventory based on this analysis. Unanticipated changes in technology or customer demand could result in a decrease in demand for one or more of the Company’s products, which may require a write down of inventory that could materially affect operating results.

Property, Plant and Equipment

The cost of property, plant and equipment is depreciated over the estimated useful lives of the respective assets. The Company’s buildings are depreciated over periods ranging from fifteen to thirty years. The majority of the Company’s equipment is depreciated over periods of three to seven years. Depreciation is computed on a straight-line basis. Leasehold improvements are amortized over the lesser of the estimated useful lives of the assets or the related lease terms.

Goodwill and Other Long-Lived Assets

The total purchase price in a business combination is allocated to the fair value of assets acquired and liabilities assumed based on their fair values at the acquisition date, with amounts exceeding the fair values being recorded as goodwill. Goodwill is not amortized. Instead, it is tested for impairment on an annual basis or more frequently whenever events or changes in circumstances indicate that goodwill may be impaired. The Company did not record any impairment of goodwill during 2011, 2010 or 2009.

Other intangible assets consist primarily of technology acquired in business combinations. Acquired intangibles are amortized on a straight-line basis over their respective estimated useful lives. Long-lived assets are tested for recoverability whenever events or changes in circumstances indicate that their carrying amounts may not be recoverable. The Company did not record any impairments to long-lived assets during 2011 or 2010. The Company recorded impairments to certain long-lived assets during 2009. See Note 13.

Revenue and Accounts Receivable

Revenue is recognized when the title and risk of loss have passed to the customer, there is persuasive evidence of an arrangement, delivery has occurred, or services have been rendered, the sales price is fixed or determinable and collectability is reasonably assured. The Company establishes provisions against revenue and cost of revenue for estimated sales returns in the same period that the related revenue is recognized based on existing product return notifications. If actual sales returns exceed expectations, an increase in the sales return accrual would be required, which could materially affect operating results.

In accordance with standard industry practice, the Company provides distributors and retailers (collectively referred to as “resellers”) with limited price protection for inventories held by resellers at the time of published list price reductions, and the Company provides resellers and OEMs with other sales incentive programs. At the time the Company recognizes revenue to resellers and OEMs, a reduction of revenue is recorded for estimated price protection until the resellers sell such inventory to their customers and the Company also records a reduction of revenue for the other programs in effect. The Company bases these adjustments on several factors including anticipated price decreases during the reseller holding period, reseller’s sell-through and inventory levels, estimated amounts to be reimbursed to qualifying customers, historical pricing information and customer claim processing. If customer demand for hard drives or market conditions differ from the Company’s expectations, the Company’s operating results could be materially affected. The Company also has programs under which it reimburses qualified distributors and retailers for certain marketing expenditures, which are recorded as a reduction of revenue. Sales incentive and marketing programs are recorded as a reduction of revenue.

The Company records an allowance for doubtful accounts by analyzing specific customer accounts and assessing the risk of loss based on insolvency, disputes or other collection issues. In addition, the Company routinely analyzes the different receivable aging categories and establishes reserves based on a combination of past due receivables and expected future losses based primarily on its historical levels of bad debt losses. If the financial condition of a significant customer deteriorates resulting in its inability to pay its accounts when due, or if the Company’s overall loss history changes significantly, an adjustment in the Company’s allowance for doubtful accounts would be required, which could materially affect operating results.

The Company establishes provisions against revenue and cost of revenue for sales returns in the same period that the related revenue is recognized. These provisions are based on existing product return notifications. If actual sales returns exceed expectations, an increase in the sales return accrual would be required, which could materially affect operating results.

Warranty

The Company records an accrual for estimated warranty costs when revenue is recognized. The Company generally warrants its products for a period of one to five years. The warranty provision considers estimated product failure rates and trends, estimated repair or replacement costs and estimated costs for customer compensatory claims related to product quality issues, if any. A statistical warranty tracking model is used to help prepare estimates and assist the Company in exercising judgment in determining the underlying estimates. The statistical tracking model captures specific detail on hard drive reliability, such as factory test data, historical field return rates, and costs to repair by product type. Management’s judgment is subject to a greater degree of subjectivity with respect to newly introduced products because of limited field experience with those products upon which to base warranty estimates. Management reviews the warranty accrual quarterly for products shipped in prior periods and which are still under warranty. Any changes in the estimates underlying the accrual may result in adjustments that impact current period gross margin and income. Such changes are generally a result of differences between forecasted and actual return rate experience and costs to repair. If actual product return trends, costs to repair returned products or costs of customer compensatory claims differ significantly from estimates, future results of operations could be materially affected.

Litigation and Other Contingencies

When the Company becomes aware of a claim or potential claim, the Company assesses the likelihood of any loss or exposure. The Company discloses information regarding each material claim where the likelihood of a loss contingency is probable or reasonably possible. If a loss contingency is probable and the amount of the loss can be reasonably estimated, the Company records an accrual for the loss. In such cases, there may be an exposure to potential loss in excess of the amount accrued. Where a loss is not probable but is reasonably possible and where a loss in excess of the amount accrued is reasonably possible, the Company discloses an estimate of the amount of the loss or range of possible losses for the claim if a reasonable estimate can be made, unless the amount of such reasonably possible losses is not material to the Company’s financial position, results of operations or cash flows. The ability to predict the ultimate outcome of such matters involves judgments, estimates and inherent uncertainties. The actual outcome of such matters could differ materially from management’s estimates. See Note 5.

Advertising Expense

Advertising costs are expensed as incurred. Selling, general and administrative expenses of the Company included advertising costs of $11 million, $7 million, and $5 million in 2011, 2010 and 2009, respectively.

Income Taxes

The Company accounts for income taxes under the asset and liability method, which provides that deferred tax assets and liabilities be recognized for temporary differences between the financial reporting basis and the tax basis of assets and liabilities and expected benefits of utilizing net operating loss (“NOL”) and tax credit carryforwards. The Company records a valuation allowance when it is more likely than not that the deferred tax assets will not be realized. Each period, the Company evaluates the need for a valuation allowance for its deferred tax assets and adjusts the valuation allowance so that the Company records net deferred tax assets only to the extent that it has concluded it is more likely than not that these deferred tax assets will be realized.

The Company recognizes liabilities for uncertain tax positions based on a two-step process. To the extent a tax position does not meet a more-likely-than-not level of certainty, no benefit is recognized in the financial statements. If a position meets the more-likely-than-not level of certainty, it is recognized in the financial statements at the largest amount that has a greater than 50% likelihood of being realized upon ultimate settlement. Interest and penalties related to unrecognized tax benefits are recognized on liabilities recorded for uncertain tax positions, as applicable, and are recorded in the provision for income taxes. The actual liability for unrealized tax benefits may be materially different from the Company’s estimates, which could result in the need to record additional liabilities for unrecognized tax benefits or potentially adjust previously-recorded liabilities for unrealized tax benefits, and may materially affect our operating results.

Income per Common Share

The Company computes basic income per common share using net income and the weighted average number of common shares outstanding during the period. Diluted income per common share is computed using net income and the weighted average number of common shares and potentially dilutive common shares outstanding during the period. Potentially dilutive common shares include certain dilutive outstanding employee stock options, rights to purchase shares of common stock under the Company’s Employee Stock Purchase Plan (“ESPP”) and restricted stock unit awards.

The following table illustrates the computation of basic and diluted income per common share (in millions, except per share data):


	Years Ended
	July 1,		July 2,		July 3,
	2011		2010		2009

Net income	$	726	$	1,382	$	470

Weighted average shares outstanding:
Basic		231		228		222
Employee stock options and other		4		5		4

Diluted		235		233		226

Income per common share:
Basic	$	3.14	$	6.06	$	2.12

Diluted	$	3.09	$	5.93	$	2.08

Anti-dilutive potential common shares excluded*		3		1		6


*		For purposes of computing diluted income per common share, certain potentially dilutive securities have been excluded from the calculation because their effect would have been anti-dilutive.

Stock-based Compensation

The Company accounts for all stock-based compensation at fair value. Stock-based compensation cost is measured at the grant date based on the value of the award and is recognized as expense over the vesting period. The fair values of all stock options granted are estimated using a binomial model, and the fair values of all ESPP purchase rights are estimated using the Black-Scholes-Merton option-pricing model. Both the binomial and the Black-Scholes-Merton option-pricing models require the input of highly subjective assumptions. The Company is required to use judgment in estimating the amount of stock-based awards that are expected to be forfeited. If actual forfeitures differ significantly from the original estimate, stock-based compensation expense and the results of operations could be materially affected.

Other Comprehensive Income (Loss)

Other comprehensive income (loss) refers to revenue, expenses, gains and losses that are recorded as an element of shareholders’ equity but are excluded from net income. The Company’s other comprehensive income (loss) is comprised of unrealized gains and losses on foreign exchange contracts.

Foreign Exchange Contracts

Although the majority of the Company’s transactions are in U.S. dollars, some transactions are based in various foreign currencies. The Company purchases short-term, foreign exchange contracts to hedge the impact of foreign currency exchange fluctuations on certain underlying assets, revenue, liabilities and commitments for operating expenses and product costs denominated in foreign currencies. The purpose of entering into these hedging transactions is to minimize the impact of foreign currency fluctuations on the Company’s results of operations. These contract maturity dates do not exceed 12 months. All foreign exchange contracts are for risk management purposes only. The Company does not purchase foreign exchange contracts for trading purposes. The Company had outstanding foreign exchange contracts with commercial banks for Thai Baht, Malaysian Ringgit, Euro and British Pound Sterling with aggregate notional amounts of $1.5 billion and $1.1 billion at July 1, 2011 and July 2, 2010, respectively. Thai Baht contracts are designated as either cash flow or fair value hedges. Malaysian Ringgit contracts are designated as cash flow hedges. Euro and British Pound Sterling contracts are designated as fair value hedges.

If the derivative is designated as a cash flow hedge, the effective portion of the change in fair value of the derivative is initially deferred in other comprehensive income (loss), net of tax. These amounts are subsequently recognized into earnings when the underlying cash flow being hedged is recognized into earnings. Recognized gains and losses on foreign exchange contracts entered into for manufacturing-related activities are reported in cost of revenue. Hedge effectiveness is measured by comparing the hedging instrument’s cumulative change in fair value from inception to maturity to the underlying exposure’s terminal value. The Company determined the ineffectiveness associated with its cash flow hedges to be immaterial.

A change in the fair value of fair value hedges is recognized in earnings in the period incurred and is reported as a component of operating expenses. All fair value hedges were determined to be effective. The fair value and the changes in fair value on these contracts were not material to the consolidated financial statements for all years presented. See Notes 10 and 11 for additional disclosures related to foreign exchange contracts.

Use of Estimates

Company management has made estimates and assumptions relating to the reporting of certain assets and liabilities in conformity with U.S. GAAP. These estimates and assumptions have been applied using methodologies that are consistent throughout the periods presented. However, actual results could differ materially from these estimates.

Recent Accounting Pronouncements

In September 2009, the FASB issued Accounting Standards Update (“ASU”) 2009-13, “Multiple-Deliverable Revenue Arrangements” (“ASU 2009-13”), and ASU 2009-14, “Certain Revenue Arrangements That Include Software Elements” (“ASU 2009-14”). ASU 2009-13 amends the revenue guidance under Subtopic 605-25, “Multiple Element Arrangements,” and addresses how to determine whether an arrangement involving multiple deliverables contains more than one unit of accounting and how arrangement consideration shall be measured and allocated to the separate units of accounting in the arrangement. ASU 2009-14 excludes tangible products containing software components and non-software components that function together to deliver the product’s essential functionality from the scope of Subtopic 985-605, “Revenue Recognition.” ASU 2009-13 and ASU 2009-14 are effective for fiscal periods beginning on or after June 15, 2010, which for the Company was the first quarter of fiscal 2011. The Company’s adoption of ASU 2009-13 and ASU 2009-14 had no impact on its consolidated financial statements.

In May 2011, the FASB issued ASU 2011-04, “Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs” (“ASU 2011-04”). ASU 2011-04 clarifies existing fair value measurement and disclosure requirements by amending certain fair value measurement principles and requiring additional disclosures regarding fair value measurements. ASU 2011-04 is effective for fiscal periods beginning after December 15, 2011, which for the Company is the third quarter of fiscal 2012. The Company is currently evaluating the impact that ASU 2011-04 will have on its consolidated financial statements.

In June 2011, the FASB issued ASU 2011-05 “Presentation of Comprehensive Income” (“ASU 2011-05”). ASU 2011-05 requires that all non-owner changes in shareholders’ equity be presented either in a single continuous statement of comprehensive income or in two separate but continuous statements. If presented in two separate statements, the first statement should present total net income and its components followed immediately by a second statement of total other comprehensive income, its components and the total comprehensive income. ASU 2011-05 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2011, which for the Company is the first quarter of fiscal 2013. The Company is currently evaluating the impact that ASU 2011-05 will have on its consolidated financial statements.

- Definition

The entire disclosure for the organization, consolidation and basis of presentation of financial statements disclosure, and significant accounting policies of the reporting entity. May be provided in more than one note to the financial statements, as long as users are provided with an understanding of (1) the significant judgments and assumptions made by an enterprise in determining whether it must consolidate a VIE and/or disclose information about its involvement with a VIE, (2) the nature of restrictions on a consolidated VIE's assets reported by an enterprise in its statement of financial position, including the carrying amounts of such assets, (3) the nature of, and changes in, the risks associated with an enterprise's involvement with the VIE, and (4) how an enterprise's involvement with the VIE affects the enterprise's financial position, financial performance, and cash flows. Describes procedure if disclosures are provided in more than one note to the financial statements.

+ References+ Details

Debt

12 Months Ended

Jul. 01, 2011

Debt [Abstract]

Debt

Note 3. Debt

Long-term debt consisted of the following as of July 1, 2011 and July 2, 2010 (in millions):


	2011			2010

Term loan	$	294		$	400
Less amounts due in one year		(144	)		(106	)

Long-term debt	$	150		$	294

In February 2008, Western Digital Technologies, Inc. (“WDTI”), a wholly-owned subsidiary of the Company, entered into a five-year Credit Agreement that provided for a $500 million term loan facility. As of July 1, 2011, the term loan facility had a variable interest rate of 1.44% and a remaining balance of $294 million, which requires principal payments totaling $144 million in 2012 and $150 million in 2013. The term loan facility has a maturity date of February 11, 2013. The term loan facility requires WDTI to comply with a leverage ratio and an interest coverage ratio calculated on a consolidated basis for the Company and its subsidiaries. In addition, the term loan facility contains customary covenants, including covenants that limit or restrict WDTI’s and its subsidiaries’ ability to incur liens, incur indebtedness, make certain restricted payments, merge or consolidate and enter into certain speculative hedging arrangements. As of July 1, 2011, WDTI was in compliance with all covenants.

See Note 14 for additional disclosures related to the Company’s new credit facility to be entered into in connection with the closing of the planned acquisition of Viviti Technologies Ltd., until recently known as Hitachi Global Storage Technologies Pte. Ltd (“HGST”).

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References+ Details

Commitments and Contingencies

12 Months Ended

Jul. 01, 2011

Commitments, Contingencies and Legal Proceedings [Abstract]

Commitments and Contingencies

Note 4. Commitments and Contingencies

Lease Commitments

The Company leases certain facilities and equipment under long-term, non-cancelable operating leases. The Company’s operating leases consist of leased property and expire at various dates through 2020. Rental expense under these operating leases, including month-to-month rentals, was $23 million, $22 million and $21 million in 2011, 2010 and 2009, respectively. Future minimum lease payments under operating leases that have initial or remaining non-cancelable lease terms in excess of one year at July 1, 2011 are as follows (in millions):


2012	$	18
2013		17
2014		14
2015		11
2016		9
Thereafter		46

Total future minimum payments	$	115

Product Warranty Liability

Changes in the warranty accrual for 2011, 2010 and 2009 were as follows (in millions):


	2011			2010			2009

Warranty accrual, beginning of period	$	170		$	123		$	114
Charges to operations		172			183			126
Utilization		(160	)		(138	)		(111	)
Changes in estimate related to pre-existing warranties		(12	)		2			(6	)

Warranty accrual, end of period	$	170		$	170		$	123

Accrued warranty also includes amounts classified in other liabilities in the consolidated balance sheets of $38 million at July 1, 2011 and $41 million at July 2, 2010.

Long-term Purchase Agreements

The Company has entered into long-term purchase agreements with various component suppliers. The commitments depend on specific products ordered and may be subject to minimum quality requirements and future price negotiations. The Company expects these commitments to total $636 million for 2012, $6 million for 2013 and 2014, $5 million for 2015, and $1 million for 2016.

- Definition

The entire disclosure for commitments and contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Interpretation (FIN)

-Number 14

-Paragraph 3

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 9, 10, 11, 12

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.25)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14435-108349

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 440

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25287-109308

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6449706&loc=d3e16207-108621

+ Details

Legal Proceedings

12 Months Ended

Jul. 01, 2011

Commitments, Contingencies and Legal Proceedings [Abstract]

Legal Proceedings


Note 5.	Legal Proceedings

When the Company becomes aware of a claim or potential claim, the Company assesses the likelihood of any loss or exposure. The Company discloses information regarding each material claim where the likelihood of a loss contingency is probable or reasonably possible. If a loss contingency is probable and the amount of the loss can be reasonably estimated, the Company records an accrual for the loss. In such cases, there may be an exposure to potential loss in excess of the amount accrued. Where a loss is not probable but is reasonably possible and where a loss in excess of the amount accrued is reasonably possible, the Company discloses an estimate of the amount of the loss or range of possible losses for the claim if a reasonable estimate can be made, unless the amount of such reasonably possible losses is not material to the Company’s financial position, results of operations or cash flows. For the matters described below, the Company has either recorded an accrual for losses that are probable and reasonably estimable or has determined that, while a loss is reasonably possible, a reasonable estimate of the amount of loss or range of possible losses with respect to the claim, including the amount of loss in excess of the amount accrued, cannot be made. The ability to predict the ultimate outcome of such matters involves judgments, estimates and inherent uncertainties. The actual outcome of such matters could differ materially from management’s estimates.

Intellectual Property Litigation

On June 20, 2008, plaintiff Convolve, Inc. (“Convolve”) filed a complaint in the Eastern District of Texas against the Company and two other companies alleging infringement of U.S. Patent Nos. 6,314,473 and 4,916,635. The complaint sought unspecified monetary damages and injunctive relief. On October 10, 2008, Convolve amended its complaint to allege infringement of only the ‘473 patent. The ‘473 patent allegedly relates to interface technology to select between certain modes of a disk drive’s operations relating to speed and noise. A trial in the matter began on July 18, 2011 and concluded on July 26, 2011 with a verdict against the Company in an amount that is not material to the Company’s financial position, results of operations or cash flows. The Company is evaluating its post-trial and appellate options.

On July 15, 2009, plaintiffs Carl B. Collins and Farzin Davanloo filed a complaint in the Eastern District of Texas against the Company and ten other companies alleging infringement of U.S. Patent Nos. 5,411,797 and 5,478,650. Plaintiffs are seeking injunctive relief and unspecified monetary damages, fees and costs. The asserted patents allegedly relate to nanophase diamond films. The Company intends to defend itself vigorously in this matter.

On December 7, 2009, plaintiff Nazomi Communications filed a complaint in the Eastern District of Texas against the Company and seven other companies alleging infringement of U.S. Patent Nos. 7,080,362 and 7,225,436. Plaintiffs dismissed the Eastern District of Texas suit after filing a similar complaint in the Central District of California on February 8, 2010. The case was subsequently transferred to the Northern District of California on October 14, 2010. Plaintiffs are seeking injunctive relief and unspecified monetary damages, fees and costs. The asserted patents allegedly relate to processor cores capable of Java hardware acceleration. The Company intends to defend itself vigorously in this matter.

On January 5, 2010, plaintiff Enova Technology Corporation filed a complaint in the District of Delaware against the Company and Initio Corporation alleging infringement of U.S. Patent Nos. 7,136,995 and 7,386,734. Plaintiff is seeking injunctive relief and unspecified monetary damages, fees and costs. The asserted patents allegedly relate to real time full disk encryption application specific integrated circuits, or ASICs. The Company intends to defend itself vigorously in this matter.

On November 10, 2010, plaintiff Rembrandt Data Storage filed a complaint in the Western District of Wisconsin against the Company alleging infringement of U.S. Patent Nos. 5,995,342 and 6,195,232. Plaintiff is seeking injunctive relief and unspecified monetary damages, fees and costs. The asserted patents allegedly relate to specific thin film heads having solenoid coils. The Company intends to defend itself vigorously in this matter.

On August 1, 2011, plaintiff Guzik Technical Enterprises filed a complaint in the Northern District of California against the Company and various of its subsidiaries alleging infringement of U.S. Patent Nos. 6,023,145 and 6,785,085, breach of contract and misappropriation of trade secrets. Plaintiff is seeking injunctive relief and unspecified monetary damages, fees and costs. The asserted patents allegedly relate to devices used to test hard disk drive heads and media. The Company intends to defend itself vigorously in this matter.

On October 4, 2006, plaintiff Seagate Technology LLC (“Seagate”) filed a complaint against the Company and one of its employees formerly employed by Seagate in the Minnesota Fourth Judicial District Court. The complaint alleges claims based on supposed misappropriation of trade secrets and seeks injunctive relief and unspecified monetary damages, fees and costs. On June 19, 2007, the Company’s employee filed a demand for arbitration with the American Arbitration Association. A motion to stay the litigation as against all defendants and to compel arbitration of all Seagate’s claims was granted on September 19, 2007. On September 23, 2010, Seagate filed a motion to amend its claims and add allegations based on the supposed misappropriation of additional confidential information, and the arbitrator granted Seagate’s motion. The arbitration hearing commenced on May 23, 2011 and concluded on July 11, 2011. The parties will be filing post-arbitration briefs in August 2011. The arbitrator is expected to render a decision in the fall of 2011. The Company continues to defend itself vigorously in this matter.

Employment Litigation

On March 20, 2009, plaintiff Ghazala H. Durrani, a former employee of the Company, filed a putative class action complaint in the Alameda County (California) Superior Court. The complaint alleged that certain of the Company’s engineers had been misclassified as exempt employees under California state law and were, therefore, due unspecified amounts for unpaid hourly overtime wages and other amounts, as well as penalties for allegedly missed meal and rest periods. By court order dated April 24, 2009, the case was transferred to the Orange County (California) Superior Court. On or about June 16, 2009, the Company was dismissed from the case without prejudice by stipulation, leaving WDTI as the sole remaining defendant. On or about June 4, 2009, WDTI filed its answer to the complaint, denying the substantive allegations thereof and raising several affirmative defenses. The parties participated in a mediation of the case on June 3, 2010, which led to a proposed settlement of the case. The proposed settlement, which was ultimately approved by the court, resolved the case on a class-wide basis for an immaterial amount that was accrued by the Company in the fourth quarter of fiscal 2010. The court granted final approval of the settlement and entered judgment on February 7, 2011. A final accounting hearing took place on July 11, 2011, at which the court confirmed that the settlement amount was fully paid in accordance with the settlement agreement.

On February 26, 2010, and as thereafter amended on August 23, 2010 and December 22, 2010, plaintiff Tariq Sadaat, a former employee of the Company, filed a putative class action complaint in the Orange County (California) Superior Court against the Company, WDTI, Kelly Services, Inc., a Delaware corporation (“Kelly Services”), and certain other unnamed individuals. Plaintiff sought to represent certain hourly employees who were assigned to work at certain of the Company’s facilities by Kelly Services, a temporary staffing agency. In this regard, the complaint alleged that the hourly employees were due unspecified sums for unpaid overtime wages and other amounts, as well as penalties for allegedly missed meal and rest periods. The complaint sought unspecified damages including lost wages, penalties under the California Labor Code and other statutes, compensatory and punitive damages, declaratory relief, injunctive relief, interest, attorneys’ fees and costs. The Company’s response to the complaint was filed and served in January 2011. The parties participated in a mediation of the case, which led to a proposed settlement of Sadaat’s individual claims for an immaterial amount. The Court approved the proposed settlement on July 26, 2011, and dismissed the complaint in its entirety, with prejudice as to Sadaat’s individual claims and without prejudice as to the alleged class claims.

Other Matters

In the normal course of business, the Company is subject to other legal proceedings, lawsuits and other claims. Although the ultimate aggregate amount of probable monetary liability or financial impact with respect to these other matters is subject to many uncertainties and is therefore not predictable with assurance, management believes that any monetary liability or financial impact to the Company from these other matters, individually and in the aggregate, would not be material to the Company’s financial condition, results of operations or cash flows. However, there can be no assurance with respect to such result, and monetary liability or financial impact to the Company from these other matters could differ materially from those projected.

Business Segment Geographic Information And Major Customers

12 Months Ended

Jul. 01, 2011

Business Segment Geographic Information and Major Customers [Abstract]

Business Segment Geographic Information and Major Customers

Note 6. Business Segment, Geographic Information and Major Customers

Segment Information

The Company operates in one reportable operating segment, the hard drive business.

Geographic Information

The Company’s operations outside the United States include manufacturing facilities in Malaysia, Singapore, and Thailand as well as sales offices throughout the Americas, Asia Pacific, Europe and the Middle East. The following table summarizes the Company’s operations by geographic area for the three years ended July 1, 2011 (in millions):


	2011		2010		2009

Net revenue(1):
United States	$	1,589	$	1,889	$	1,492
Asia		5,434		5,239		3,639
Europe, Middle East and Africa		2,196		2,260		2,008
Other		307		462		314

Total	$	9,526	$	9,850	$	7,453

Long-lived assets:
United States	$	1,285	$	1,173	$	1,043
Asia		1,345		1,379		954
Europe, Middle East and Africa		1		56		64

Total	$	2,631	$	2,608	$	2,061


(1)		Net revenue is attributed to geographic regions based on the ship to location of the customer.

Major Customer

For 2011 and 2010, no single customer accounted for 10%, or more, of the Company’s net revenue. For 2009, sales to Dell Inc. accounted for 10% of the Company’s net revenue.

Western Digital Corporation 401(k) Plan	12 Months Ended
Western Digital Corporation 401(k) Plan	Jul. 01, 2011
Western Digital Corporation 401(k) Plan [Abstract]
Western Digital Corporation 401(k) Plan	Note 7. Western Digital Corporation 401(k) Plan The Company has adopted the Western Digital Corporation 401(k) Plan (the “Plan”). The Plan covers substantially all domestic employees, subject to certain eligibility requirements. The Company makes a basic matching contribution on behalf of each participating eligible employee equal to fifty percent (50%) of the eligible participant’s pre-tax contributions for the contribution cycle not to exceed 5% of the eligible participant’s compensation; provided, however, that each eligible participant shall receive a minimum annual basic matching contribution equal to fifty percent (50%) of the first $4,000 of pre-tax contributions for any calendar year. Company contributions vest over a 5-year period of employment. For 2011, 2010 and 2009, the Company made Plan contributions of $9 million, $9 million, and $7 million, respectively.

- Definition

The entire disclosure for pension and other postretirement benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Implementation Guide (Q and A)

-Number FAS88

-Paragraph 63

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-URI http://asc.fasb.org/topic&trid=2235017

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 158

-Paragraph 7, 21, 22

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5, 6, 7, 8

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph h

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Reference 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph q

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Reference 9: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 8

-Subparagraph m

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Reference 10: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 106

-Paragraph 518

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 11: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 87

-Paragraph 264

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Reference 12: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 03-2

-Paragraph 8

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Reference 13: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 30

-Paragraph 26

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Name FASB Staff Position (FSP)

-Number FAS106-2

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+ Details

Shareholders Equity

12 Months Ended

Jul. 01, 2011

Shareholders Equity [Abstract]

Shareholders Equity

Note 8. Shareholders’ Equity

Stock Incentive Plans

The Company maintains four stock-based incentive plans (collectively referred to as the “Stock Plans”): the amended and restated 2004 Performance Incentive Plan, the Employee Stock Option Plan, the Broad-Based Stock Incentive Plan and the Stock Option Plan for Non-Employee Directors. No new awards may be granted under the Employee Stock Option Plan, the Broad-Based Stock Incentive Plan or the Stock Option Plan for Non-Employee Directors (collectively referred to as the “Prior Stock Plans”). As of July 1, 2011, options to purchase 1.2 million shares of the Company’s common stock remained outstanding and exercisable under the Prior Stock Plans. Other than for such options, no restricted stock or other awards were outstanding under the Prior Stock Plans as of July 1, 2011. Options granted under the Prior Stock Plans expire either five or ten years from the date of grant.

The types of awards that may be granted under the 2004 Performance Incentive Plan include stock options, stock appreciation rights, restricted stock units (“RSUs”), stock bonuses and other forms of awards granted or denominated in the Company’s common stock or units of the Company’s common stock, as well as cash bonus awards. Persons eligible to receive awards under the 2004 Performance Incentive Plan include officers or employees of the Company or any of its subsidiaries, directors of the Company and certain consultants and advisors to the Company or any of its subsidiaries. The vesting of awards under the Performance Incentive Plan is determined at the date of grant. Each award expires on a date determined at the date of grant; however, the maximum term of options and stock appreciation rights under the 2004 Performance Incentive Plan is ten years after the grant date of the award. RSUs granted under the 2004 Performance Incentive Plan typically vest over periods ranging from one to five years from the date of grant.

As of July 1, 2011, the maximum number of shares of the Company’s common stock that was authorized for award grants under the 2004 Performance Incentive Plan was 37.2 million shares. Any shares subject to awards under the Prior Stock Plans that are canceled, forfeited or otherwise terminate without having vested or been exercised, as applicable, will become available for other award grants under the 2004 Performance Incentive Plan. Shares issued in respect of stock options and stock appreciation rights granted under the 2004 Performance Incentive Plan count against the plan’s share limit on a one-for-one basis, whereas shares issued in respect of any other type of award granted under the plan count against the plan’s share limit as 1.35 shares for every one share actually issued in connection with such award. The 2004 Performance Incentive Plan will terminate on September 20, 2014 unless terminated earlier by the Company’s Board of Directors.

Employee Stock Purchase Plan

The Company maintains an ESPP. Under the ESPP, eligible employees may authorize payroll deductions of up to 10% of their eligible compensation during prescribed offering periods to purchase shares of the Company’s common stock at 95% of the fair market value of common stock on either the first day of that offering period or on the applicable exercise date, whichever is less. A participant may participate in only one offering period at a time, and a new offering period generally begins each June 1st and December 1st. Each offering period is generally 24 months and consists of four exercise dates (each, generally six months following the start of the offering period or the preceding exercise date, as the case may be). If the fair market value of the Company’s common stock is less on a given exercise date than on the date of grant, employee participation in that offering period ends and participants are automatically re-enrolled in the next new offering period.

Stock-based Compensation Expense

The Company recognized in expense $37 million, $37 million and $24 million for stock-based compensation related to the vesting of options granted by the Company under the Stock Plans and the ESPP in 2011, 2010 and 2009, respectively. As of July 1, 2011, total compensation cost related to unvested stock options granted under the Stock Plans and ESPP rights issued to employees but not yet recognized was $60 million and will be amortized on a straight-line basis over a weighted average service period of approximately 2.2 years.

The Company recognized in expense $32 million, $23 million and $23 million related to restricted stock and restricted stock unit awards granted under the Stock Plans that vested during 2011, 2010 and 2009, respectively. As of July 1, 2011, the aggregate unamortized fair value of all unvested restricted stock unit awards granted under the Stock Plans was $41 million, which will be recognized on a straight-line basis over a weighted average vesting period of approximately 1.3 years.

Stock Option Activity

The following table summarizes stock option activity under the Stock Plans over the last three fiscal years (in millions, except per share amounts and remaining contractual lives):


						Weighted Average
				Weighted Average		Remaining		Aggregate
	Number			Exercise Price		Contractual Life		Intrinsic
	of Shares			Per Share		(in years)		Value

Options outstanding at June 27, 2008		8.0		$	14.92
Granted		4.2			20.02
Exercised		(0.6	)		9.59
Canceled or expired		(0.3	)		20.10

Options outstanding at July 3, 2009		11.3		$	17.00
Granted		1.4			36.06
Exercised		(3.1	)		14.67
Canceled or expired		(0.2	)		22.78

Options outstanding at July 2, 2010		9.4		$	20.61
Granted		2.5			26.59
Exercised		(1.4	)		16.83
Canceled or expired		(0.3	)		26.21

Options outstanding at July 1, 2011		10.2		$	22.49		4.6	$	145

Exercisable at July 1, 2011		5.5		$	19.36		3.8	$	95

Vested and expected to vest after July 1, 2011		10.1		$	22.43		4.5	$	144

If an option has an exercise price that is less than the quoted price of the Company’s common stock at the particular time, the aggregate intrinsic value of that option at that time is calculated based on the difference between the exercise price of the options and the quoted price of the Company’s common stock at that time. As of July 1, 2011, the Company had options outstanding to purchase an aggregate of 10.1 million shares with an exercise price below the quoted price of the Company’s stock on that date resulting in an aggregate intrinsic value of $145 million at that date. During 2011, 2010 and 2009, the aggregate intrinsic value of options exercised under the Stock Plans was $25 million, $72 million and $8 million, respectively, determined as of the date of exercise.

The following table summarizes information about options outstanding and exercisable under the Stock Plans as of July 1, 2011 (in millions, except per share amounts):


		Options Outstanding						Options Exercisable
				Weighted Average
				Remaining
Range of		Number		Contractual Life		Weighted Average		Number		Weighted Average
Exercise Prices		of Shares		(in years)		Exercise Price		of Shares		Exercise Price

$	2.10 – $13.76		1.6		2.5	$	8.98		1.6	$	8.97
$	13.95 – $20.55		2.2		4.6		17.59		1.4		18.11
$	21.29 – $25.95		2.3		4.2		23.89		1.6		23.70
$	26.17 – $26.17		2.2		6.2		26.17		—		26.17
$	27.64 – $40.66		1.9		4.9		33.91		0.9		32.85

			10.2		4.6	$	22.49		5.5	$	19.36

Fair Value Disclosure — Binomial Model

The fair value of stock options granted is estimated using a binomial option-pricing model. The binomial model requires the input of highly subjective assumptions including the expected stock price volatility, the expected price multiple at which employees are likely to exercise stock options and the expected employee termination rate. The Company uses historical data to estimate option exercise, employee termination, and expected stock price volatility within the binomial model. The risk-free rate for periods within the contractual life of the option is based on the U.S. Treasury yield curve in effect at the time of grant. The fair value of stock options granted during the three years ended July 1, 2011 was estimated using the following weighted average assumptions:


	2011	2010	2009

Suboptimal exercise factor	1.81	1.73	1.73
Range of risk-free interest rates	0.20% to 2.90%	0.31% to 3.40%	0.38% to 3.44%
Range of expected stock price volatility	0.39 to 0.59	0.40 to 0.72	0.43 to 0.77
Weighted average expected volatility	0.52	0.57	0.55
Post-vesting termination rate	2.44%	3.57%	4.02%
Dividend yield	—	—	—
Fair value	$11.42	$17.09	$9.05

The weighted average expected term of the Company’s stock options granted during 2011, 2010 and 2009 was 4.7 years, 4.6 years and 4.9 years, respectively.

Fair Value Disclosure — Black-Scholes-Merton Model

The fair value of ESPP purchase rights issued is estimated at the date of grant of the purchase rights using the Black-Scholes-Merton option-pricing model. The Black-Scholes-Merton option-pricing model was developed for use in estimating the fair value of traded options that have no vesting restrictions and are fully transferable. The Black-Scholes-Merton option-pricing model requires the input of highly subjective assumptions such as the expected stock price volatility and the expected period until options are exercised. Purchase rights under the current ESPP provisions are granted on either June 1 or December 1 of each year.

The fair values of all ESPP purchase rights granted on or prior to July 1, 2011 have been estimated at the date of grant using a Black-Scholes-Merton option-pricing model with the following weighted average assumptions:


	ESPP
	2011			2010			2009

Option life (in years)		1.25			1.24			1.30
Risk-free interest rate		0.44	%		0.57	%		0.65	%
Stock price volatility		0.44			0.53			0.63
Dividend yield		—			—			—
Fair value	$	8.36		$	10.02		$	3.61

RSU Activity

The following table summarizes RSU activity (in millions, except weighted average grant date fair value):


				Weighted Average
	Number			Grant Date
	of Shares			Fair Value

RSUs outstanding at June 27, 2008		2.8		$	21.75
Granted		0.9			22.84
Vested		(0.5	)		23.18
Canceled or expired		(0.1	)		22.62

RSUs outstanding at July 3, 2009		3.1		$	21.80
Granted		1.2			38.42
Vested		(1.1	)		20.60
Canceled or expired		(0.1	)		27.84

RSUs outstanding at July 2, 2010		3.1		$	28.43
Granted		1.0			26.75
Vested		(0.8	)		24.03
Canceled or expired		(0.2	)		32.41

RSUs outstanding at July 1, 2011		3.1		$	28.85

Expected to vest after July 1, 2011		2.9		$	28.82

The fair value of each RSU is the market price of our stock on the date of grant. The aggregate value of RSUs that became fully-vested during 2011 and 2010 was $23 million and $43 million, respectively, determined as of the vest date. RSUs are generally payable in an equal number of shares of the Company’s common stock at the time of vesting of the units. The grant-date fair value of the shares underlying the restricted stock awards at the date of grant was $26 million, $45 million and $19 million in 2011, 2010 and 2009, respectively. These amounts are being recognized to expense over the corresponding vesting periods. For purposes of valuing these awards, the Company has assumed a forfeiture rate of 1.82%, 1.55%, and 0.0% during 2011, 2010, and 2009, respectively, based on a historical analysis indicating forfeitures for these types of awards.

Stock Repurchase Program

The Company’s Board of Directors previously authorized the repurchase of $750 million of common stock in open market transactions under a stock repurchase program through March 31, 2013. Since the inception of this program in 2005, through July 1, 2011, the Company has repurchased 20 million shares of its common stock for a total cost of $334 million. The Company repurchased 1.8 million shares for a total cost of $50 million during 2011. The Company may continue to repurchase stock as the Company deems appropriate and market conditions allow. The Company expects stock repurchases to be funded principally by operating cash flows.

Stock Purchase Rights

On April 6, 2001, the Company adopted a plan to protect shareholders’ rights in the event of a proposed takeover of the Company (the “2001 Rights Plan”). The 2001 Rights Plan expired on April 6, 2011. During the term of the 2001 Rights Plan, each share of the Company’s outstanding common stock carried one Right to Purchase Series A Junior Participating Preferred Stock (the “Right”). The Right enabled the holder, under certain circumstances, to purchase Series A Junior Participating Preferred Stock of Western Digital at an exercise price of $50.00 per share ten days after a person or group publicly announced it had acquired or had tendered an offer for 15%, or more, of the Company’s outstanding common stock. The Rights were redeemable by the Company at $0.001 per Right.

Stock Reserved for Issuance

The following table summarizes all shares of common stock reserved for issuance at July 1, 2011 (in millions):


	Number
	of Shares

Maximum shares issuable in connection with:
Outstanding awards and shares available for award grants		25.4
ESPP		3.5

Total		28.9

Income Taxes

12 Months Ended

Jul. 01, 2011

Income Taxes [Abstract]

Income Taxes

Note 9. Income Taxes

Pre-tax Income

The domestic and foreign components of income before income taxes were as follows for the three years ended July 1, 2011 (in millions):


	2011		2010		2009

Foreign	$	660	$	1,418	$	459
Domestic		120		102		42

Income before income taxes	$	780	$	1,520	$	501

Income Tax Provision

The components of the provision for income taxes were as follows for the three years ended July 1, 2011 (in millions):


	2011			2010			2009

Current:
Foreign	$	12		$	9		$	13
Domestic-federal		21			101			(7	)
Domestic-state		1			1			1
Deferred:
Domestic-federal		30			37			24
Domestic-state		(10	)		(10	)		—

Income tax provision	$	54		$	138		$	31

Remaining net undistributed earnings from foreign subsidiaries at July 1, 2011 on which no U.S. tax has been provided amounted to $4.7 billion. The net undistributed earnings are intended to finance local operating requirements and capital investments. Accordingly, an additional U.S. tax provision has not been made on these earnings. The tax liability for these earnings would be $1.6 billion if the Company repatriated the $4.7 billion in undistributed earnings from the foreign subsidiaries.

Deferred Taxes

Temporary differences and carryforwards, which give rise to a significant portion of deferred tax assets and liabilities as of July 1, 2011 and July 2, 2010 were as follows (in millions):


	2011			2010

Deferred tax assets:
Sales related reserves and accrued expenses not currently deductible	$	51		$	50
Accrued compensation and benefits not currently deductible		69			44
Domestic net operating loss (“NOL”) carryforward		49			52
Business credit carryforward		145			137
Other		53			47

Total deferred tax assets		367			330
Deferred tax liabilities:
Depreciation		(116	)		(58	)
Other		(10	)		(11	)

Total deferred tax liabilities		(126	)		(69	)

Deferred tax assets, net	$	241		$	261


	2011			2010

Deferred tax assets:
Current portion (included in other current assets)	$	108		$	81
Non-current portion (included in other non-current assets)		259			249

Total deferred tax assets		367			330
Deferred tax liabilities:
Current portion (included in other current assets)		(2	)		(2	)
Non-current portion (included in other non-current assets)		(124	)		(67	)

Total deferred tax liabilities		(126	)		(69	)

Deferred tax assets, net	$	241		$	261

In addition to the deferred tax assets presented above, the Company had additional NOL benefits related to stock-based compensation deductions of $110 million and $93 million at July 1, 2011 and July 2, 2010, respectively. The increase in NOL benefits relates to the current year stock based compensation deductions which will result in a future benefit of $17 million. This $17 million will be recorded as a credit to shareholders’ equity when an incremental benefit is recognized after considering all other tax attributes available to the Company.

Effective Tax Rate

Reconciliation of the U.S. Federal statutory rate to the Company’s effective tax rate is as follows for the three years ended July 1, 2011:


	2011			2010			2009

U.S. Federal statutory rate		35	%		35	%		35	%
Tax rate differential on international income		(26	)		(26	)		(30	)
Tax effect of U.S. permanent differences		3			1			6
State income tax, net of federal tax		(1	)		—			1
Income tax credits		(4	)		(1	)		(8	)
Other		—			—			2

Effective tax rate		7	%		9	%		6	%

Tax Holidays and Carryforwards

A substantial portion of the Company’s manufacturing operations in Malaysia, Singapore and Thailand operate under various tax holidays and tax incentive programs which will expire in whole or in part at various dates through 2023. Certain of the holidays may be extended if specific conditions are met. The net impact of these tax holidays and tax incentives was to increase the Company’s net earnings by $362 million ($1.54 per diluted share), $560 million ($2.40 per diluted share), and $241 million ($1.07 per diluted share) in 2011, 2010, and 2009, respectively.

As of July 1, 2011, the Company had federal and state NOL carryforwards of $185 million and $52 million, respectively. In addition, as of July 1, 2011, the Company had various federal and state tax credit carryforwards of $251 million combined. The NOL carryforwards available to offset future federal and state taxable income expire at various dates from 2021 to 2030 and 2015 to 2020, respectively. Approximately $140 million of the credit carryforwards available to offset future taxable income expire at various dates from 2012 to 2030. The remaining amount is available indefinitely. NOLs and credits relating to Komag, Incorporated (“Komag”), which was acquired by the Company on September 5, 2007, are subject to limitations under Section 382 and 383 of the Internal Revenue Code. The Company does not expect these limitations to result in a reduction in the total amount of NOLs and credits ultimately realized.

Uncertain Tax Positions

The Company recognizes liabilities for uncertain tax positions based on a two-step process. First, the tax position is evaluated for recognition by determining if it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. If the tax position is deemed more-likely-than-not to be sustained, the tax position is then assessed to determine the amount of benefit to be recognized in the financial statements. The amount of the benefit that may be recognized is the largest amount that has a greater than 50% likelihood of being realized upon ultimate settlement. With the exception of certain unrecognized tax benefits that are directly associated with the tax position taken, unrecognized tax benefits are presented gross in the Company’s balance sheet. Interest and penalties related to unrecognized tax benefits are recognized on liabilities recorded for uncertain tax positions and are recorded in the provision for income taxes. As of July 1, 2011, such interest and penalties were not material.

As of July 1, 2011, the Company had $245 million of unrecognized tax benefits.

The following is a tabular reconciliation of the total amounts of unrecognized tax benefits for the year ended July 1, 2011 (in millions):


Unrecognized tax benefit at July 2, 2010	$	230
Gross increases related to prior year tax positions		5
Gross decreases related to prior year tax positions		(11	)
Gross increases related to current year tax positions		24
Settlements/lapse of statute of limitations		(3	)

Unrecognized tax benefit at July 1, 2011	$	245

The entire balance of unrecognized tax benefits at July 1, 2011, if recognized, would affect the effective tax rate.

The Company files U.S. Federal, U.S. state, and foreign tax returns. For both federal and state tax returns, with few exceptions, the Company is subject to examination for fiscal years 2008 through 2011. In foreign jurisdictions, with few exceptions, the Company is subject to examination for all years subsequent to fiscal 2006. The Company is no longer subject to examination by the Internal Revenue Service (“IRS”) for periods prior to 2006, although carry forwards generated prior to those periods may still be adjusted upon examination by the IRS or state taxing authority if they either have been or will be used in a subsequent period.

The IRS is currently examining fiscal years 2006 and 2007 for the Company and calendar years 2005 and 2006 for Komag. The IRS has completed its field work and proposed certain adjustments. Certain issues have been agreed upon by the Company and the IRS and certain issues remain unresolved. The Company has received Revenue Agent Reports (“RARs”) for the agreed issues. The Company has also received RARs from the IRS for the unresolved issues which seek adjustments to income before income taxes of $970 million for the Company and $380 million for Komag. The issues in dispute relate primarily to transfer pricing and certain other intercompany transactions. The Company disagrees with the proposed adjustments. In May 2011, the Company filed a protest with the IRS Appeals Office regarding the proposed adjustments. The Company is continuing discussions with the IRS to resolve the Komag issues.

The Company believes that adequate provision has been made for any adjustments that may result from tax examinations. However, the outcome of tax audits cannot be predicted with certainty. If any issues addressed in the Company’s tax audits are resolved in a manner not consistent with management’s expectations, the Company could be required to adjust its provision for income taxes in the period such resolution occurs. As of July 1, 2011, it is not possible to estimate the amount of change, if any, in the unrecognized tax benefits that is reasonably possible within the next twelve months. Any significant change in the amount of the Company’s unrecognized tax benefits would most likely result from additional information or settlements relating to the examination of the Company’s uncertain tax positions.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph h

-Article 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 109

-Paragraph 136, 172

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 109

-Paragraph 43, 44, 45, 46, 47, 48, 49

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-Topic 740

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-Section 50

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h))

-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 7: http://www.xbrl.org/2003/role/presentationRef

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+ Details

Fair Value Measurements

12 Months Ended

Jul. 01, 2011

Fair Value Measurements [Abstract]

Fair Value Measurements

Note 10. Fair Value Measurements

Financial assets and liabilities that are remeasured and reported at fair value at each reporting period are classified and disclosed in one of the following three levels:

Level 1. Quoted prices in active markets for identical assets or liabilities.

Level 2. Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.

Level 3. Inputs that are unobservable for the asset or liability and that are significant to the fair value of the assets or liabilities.

The following table presents information about the Company’s financial assets and liabilities that are measured at fair value on a recurring basis as of July 1, 2011, and indicates the fair value hierarchy of the valuation techniques utilized to determine such value (in millions):


	Fair Value Measurements at
	Reporting Date Using
	Quoted Prices
	in Active		Significant
	Markets for		Other			Significant
	Identical		Observable			Unobservable
	Instruments		Inputs			Inputs
	(Level 1)		(Level 2)			(Level 3)		Total

Assets:
Cash equivalents
Money market funds	$	721	$	—		$	—	$	721
U.S. Treasury securities		—		60			—		60
U.S. Government agency securities		—		78			—		78

Total cash equivalents		721		138			—		859

Auction-rate securities		—		—			15		15
Total assets at fair value	$	721	$	138		$	15	$	874

Liabilities:
Foreign exchange contracts	$	—	$	(5	)	$	—	$	(5	)

Total liabilities at fair value	$	—	$	(5	)	$	—	$	(5	)

The following table presents information about the Company’s financial assets that are measured at fair value on a recurring basis as of July 2, 2010, and indicates the fair value hierarchy of the valuation techniques utilized to determine such value (in millions):


	Fair Value Measurements at
	Reporting Date Using
	Quoted Prices
	in Active		Significant
	Markets for		Other		Significant
	Identical		Observable		Unobservable
	Assets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		Total

Cash equivalents
Money market funds	$	458	$	—	$	—	$	458
U.S. Treasury securities		—		385		—		385
U.S. Government agency securities		—		370		—		370

Total cash equivalents		458		755		—		1,213

Auction-rate securities		—		—		15		15
Foreign exchange contracts		—		17		—		17

Total assets at fair value	$	458	$	772	$	15	$	1,245

Money Market Funds. The Company’s money market funds are funds that invest in U.S. Treasury securities and are recorded within cash and cash equivalents in the consolidated balance sheets. Money market funds are valued based on quoted market prices.

U.S. Treasury Securities. The Company’s U.S. Treasury securities are investments in Treasury bills with original maturities of three months or less, are held in custody by a third party and are recorded within cash and cash equivalents in the consolidated balance sheets. U.S. Treasury securities are valued using a market approach which is based on observable inputs including market interest rates from multiple pricing sources.

U.S. Government Agency Securities. The Company’s U.S. Government agency securities are investments in fixed income securities sponsored by the U.S. Government with original maturities of three months or less, are held in custody by a third party and are recorded within cash and cash equivalents in the consolidated balance sheets. U.S. Government agency securities are valued using a market approach which is based on observable inputs including market interest rates from multiple pricing sources.

Auction-Rate Securities. The Company’s auction-rate securities have maturity dates through 2050, are primarily backed by insurance products and are accounted for as available-for-sale securities. These investments are expected to be held until secondary markets become available and as a result, are classified as long-term investments and recorded within other non-current assets in the consolidated balance sheets. Auction-rate securities are valued using an income approach which is based on a discounted cash flow model or a credit default model. The inputs to the discounted cash flow model include market interest rates and a discount factor to reflect the illiquidity of the investments. The inputs to the credit default model include market interest rates, yields of similar securities, and probability-weighted assumptions related to the creditworthiness of the underlying assets.

Foreign Exchange Contracts. The Company’s foreign exchange contracts are short-term contracts to hedge the Company’s foreign currency risk related to the Thai Baht, Malaysian Ringgit, Euro and British Pound Sterling. Foreign exchange contracts are classified within other current assets in the consolidated balance sheets. Foreign exchange contracts are valued using an income approach which is based on a present value of future cash flows model. The market-based observable inputs for the model include forward rates and credit default swap rates.

The following table presents the changes in Level 3 financial assets measured on a recurring basis (in millions):


	U.S.
	Government
	Agency			Auction-rate
	Securities			Securities			Total

July 3, 2009	$	1		$	18		$	19
Sales		—			(3	)		(3	)
Maturities		(1	)		—			(1	)

July 2, 2010	$	—		$	15		$	15

For the year ended July 1, 2011, there were no changes in Level 3 financial assets measured on a recurring basis. The Company had no liabilities that were re-measured and reported at fair value on a recurring basis during the year ended July 2, 2010.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 16

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 44A, 44B

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 107

-Paragraph 15C, 15D

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 107

-Paragraph 3, 10, 14, 15

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 32, 33, 34

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 159

-Paragraph 17-22, 27, 28

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Reference 13: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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+ Details

Foreign Exchange Contracts

12 Months Ended

Jul. 01, 2011

Foreign Exchange Contracts [Abstract]

Foreign Exchange Contracts

Note 11. Foreign Exchange Contracts

As of July 1, 2011, the net amount of existing gains expected to be reclassified into earnings within the next twelve months was $5 million and the Company did not have any foreign exchange contracts with credit-risk-related contingent features. The Company opened $4.7 billion and $4.8 billion, and closed $3.2 billion and $4.1 billion, in foreign exchange contracts for the years ended July 1, 2011 and July 2, 2010, respectively. The fair value and balance sheet location of such contracts were as follows (in millions):

Asset Derivatives

Liability Derivatives

2011

2010

2011

2010

Derivatives Designated as

Balance Sheet

Hedging Instruments

Location

Fair Value

Location

Fair Value

Location

Fair Value

Location

Fair Value

Foreign exchange contracts

—

Other current assets

Accrued expenses

—

The impact on the consolidated financial statements was as follows (in millions):

Amount of Gain (Loss)

Recognized in

Location of Gain (Loss)

Reclassified from

Accumulated OCI

Reclassified from

Accumulated OCI into

Derivatives in Cash

on Derivatives

Accumulated

Income

Flow Hedging Relationships

2011

2010

OCI into Income

2011

2010

Foreign exchange contracts

Cost of revenue

The total net realized transaction and foreign exchange contract currency gains and losses were not material to the consolidated financial statements during the years ended July 1, 2011 and July 2, 2010. See Notes 1 and 10 for additional disclosures related to the Company’s foreign exchange contracts.

- Definition

The entire disclosure for the entity's entire derivative instruments and hedging activities. Describes an entity's risk management strategies, derivatives in hedging activities and non-hedging derivative instruments, the assets, obligations, liabilities, revenues and expenses arising therefrom, and the amounts of and methodologies and assumptions used in determining the amounts of such items.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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Reference 15: http://www.xbrl.org/2003/role/presentationRef

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-Number 133

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+ Details

Other Intangible Assets

12 Months Ended

Jul. 01, 2011

Other Intangible Assets [Abstract]

Other Intangible Assets

Note 12. Other Intangible Assets

Other intangible assets consist primarily of technology acquired in business combinations and are amortized on a straight-line basis over the respective estimated useful lives of the assets. Intangible assets as of July 1, 2011 were as follows:


	Weighted Average		Gross Carrying		Accumulated		Net Carrying
	Amortization Period		Amount		Amortization		Amount
	(in years)		(in millions)		(in millions)		(in millions)

Existing technology		9	$	127	$	59	$	68
Supply agreement		2		6		3		3

Total			$	133	$	62	$	71

In 2010, the Company acquired $11 million of intangibles as a result of the Hoya acquisition, primarily related to a glass substrate supply agreement and existing technology. Intangible assets as of July 2, 2010 were as follows:


	Weighted Average		Gross Carrying		Accumulated		Net Carrying
	Amortization Period		Amount		Amortization		Amount
	(in years)		(in millions)		(in millions)		(in millions)

Existing technology		9	$	127	$	45	$	82
Supply agreement		2		6		—		6

Total			$	133	$	45	$	88

Amortization expense for intangible assets was $17 million, $12 million and $11 million for 2011, 2010 and 2009, respectively. As of July 1, 2011, estimated future amortization expense for intangible assets is $16 million for 2012, $13 million for 2013 and 2014, $12 million for 2015, and $9 million for 2016.

- Definition

The entire disclosure for all or part of the information related to intangible assets.

+ References+ Details

Restructuring and Sale of Facility

12 Months Ended

Jul. 01, 2011

Restructuring and Sale of Facility [Abstract]

Restructuring and Sale of Facility


Note 13.	Restructuring and Sale of Facility

During 2009, the Company announced and completed a restructuring plan to realign its cost structure as a result of a softer demand environment. This resulted in the closure of one of the Company’s hard drive manufacturing facilities in Thailand, the disposal of its substrate manufacturing facility in Sarawak, Malaysia, and headcount reductions throughout the world of approximately 3,300 people. Restructuring costs totaled $112 million and consisted of $81 million of asset impairment charges, $27 million of employee termination benefits and $4 million of contract termination and other exit costs. Total cash expenditures related to the restructuring activities were $31 million. The asset impairment charge of $81 million consisted of $76 million primarily related to the land, buildings, machinery and equipment at the manufacturing facilities in Thailand and Malaysia and $5 million related to a customer relationship intangible asset acquired from Komag. The impairment charge is based on the excess of the carrying values over the estimated fair values of the assets. The fair values of the land, buildings, and equipment were estimated using the market approach. The intangible asset was valued using the income approach.

During the fourth quarter of 2009, the Company sold its substrate manufacturing facility, and related assets, in Sarawak, Malaysia for net proceeds of $29 million, resulting in a gain of $18 million. The closure and disposal of the Company’s manufacturing facilities was to realign its manufacturing capacity with the Company’s expectations regarding demand at that time. Total restructuring charges of $112 million, partially offset by the $18 million gain on sale of assets, is included in restructuring and other, net within operating expenses in the accompanying consolidated statements of income.

- Definition

The entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled.

+ References+ Details

Acquisitions

12 Months Ended

Jul. 01, 2011

Acquisitions [Abstract]

Acquisitions


Note 14.	Acquisitions

Planned Acquisition of Hitachi Global Storage Technologies

On March 7, 2011, the Company entered into a stock purchase agreement (the “Purchase Agreement”) with Hitachi, Ltd. (“Hitachi”), Viviti Technologies Ltd., until recently known as Hitachi Global Storage Technologies Holdings Pte. Ltd., a wholly owned subsidiary of Hitachi (“HGST”), and Western Digital Ireland, Ltd., an indirect wholly owned subsidiary of the Company (“WDI”). Pursuant to the Purchase Agreement, WDI agreed to acquire all of the issued and outstanding paid-up share capital of HGST from Hitachi. The planned acquisition is intended to result in a more efficient and innovative customer-focused storage company, with significant operating scale, strong global talent and the industry’s broadest product lineup backed by a rich technology portfolio. The aggregate purchase price of the planned acquisition is estimated to be approximately $4.3 billion, due at closing, and will be funded with existing cash, new debt, and 25 million newly issued shares of the Company’s common stock. The Purchase Agreement contains certain termination rights for both the Company and Hitachi, including the right to terminate the Purchase Agreement if the planned acquisition has not closed by March 7, 2012. If the planned acquisition has not closed by March 7, 2012 due to the failure to receive any required antitrust or competition authority’s consent, approval or clearance or any action by any certain governmental entities to prevent the planned acquisition for antitrust or competition reasons, the Company will, concurrently with such termination, be required to pay Hitachi a fee of $250 million in cash. During 2011, the Company incurred $17 million of expenses related to the planned acquisition of HGST which are included within selling, general and administrative expense in the consolidated statements of income.

On March 7, 2011, in connection with the planned acquisition of HGST, the Company, WDTI and WDI entered into a commitment letter with Bank of America, N.A. and Merrill Lynch, Pierce, Fenner & Smith Incorporated regarding a new credit facility for an amount of $2.5 billion, consisting of a $500 million revolving credit facility and $2.0 billion in term loans, to be entered into in connection with the closing of the planned acquisition (the “Senior Facility”). Since entering into the commitment letter, Bank of America N.A. and Merrill Lynch, Pierce, Fenner & Smith Incorporated led the effort to syndicate the Senior Facility for an amount of up to $3.0 billion, consisting of a $500 million revolving credit facility and up to $2.5 billion in term loans. As a result of such effort, the Company, WDTI and WDI have fully negotiated definitive loan documents for the Senior Facility with the syndicate members and, subject to customary closing conditions including completion of the acquisition in accordance with its terms, the Company, WDTI and WDI fully expect all of these syndicate members to be part of the final lender group. In addition, the Company is required to pay a commitment fee at the rate of 0.35%, per annum, of the aggregate unfunded amount committed to be borrowed under the Senior Facility. For 2011, the Company incurred debt commitment fees of $2 million related to the acquisition.

The planned acquisition of HGST is subject to several closing conditions, including the receipt of antitrust approvals or the expiration of applicable waiting periods in certain jurisdictions. The Company has received requests for additional information and is engaged in more in-depth reviews of the pending acquisition initiated by regulatory authorities in the United States, the European Union, the People’s Republic of China, Japan and Korea. The Company is cooperating fully with each of the regulatory authorities reviewing the proposed transaction. Subject to obtaining the required regulatory approvals or expiration of applicable waiting periods, the Company expects the transaction to close in its second quarter of fiscal 2012.

Magnetic Media Operations

On June 30, 2010, the Company acquired the facilities, equipment, intellectual property and working capital of the magnetic media sputtering operations of Hoya. The cost of the acquisition was $233 million and was funded with available cash. The Company identified and recorded the assets, including specifically identifiable intangible assets, and liabilities assumed from Hoya at their estimated fair values as of the date of acquisition, and allocated the remaining value to goodwill. The allocation was as follows (in millions):


	June 30,
	2010

Tangible assets acquired and liabilities assumed:
Inventories	$	35
Property and equipment		185
Accounts payables and other liabilities		(10	)
Intangible assets		11
Goodwill		12

Total	$	233

Intangible assets of $11 million primarily relate to a glass substrate supply agreement and existing technology. These intangibles will be amortized to cost of revenue over the weighted average useful life of 3 years.

Semiconductor Wafer Fabrication Facility

On May 25, 2010, the Company agreed to purchase a semiconductor wafer fabrication facility consisting of land, a building, equipment and certain intangible assets for a total acquisition cost of $35 million. The land and building were acquired for $20 million during the fourth fiscal quarter of 2010. The Company completed the acquisition by acquiring the equipment for $15 million during the fourth fiscal quarter of 2011.

SiliconSystems

On March 27, 2009, the Company acquired SiliconSystems, a supplier of solid-state drives for the embedded systems market. The total acquisition cost of SiliconSystems was $66 million, consisting of $65 million in cash paid to SiliconSystems shareholders and $1 million of other direct acquisition costs. The Company identified and recorded the assets, including specifically identifiable intangible assets, and liabilities assumed from SiliconSystems at their estimated fair values as of the acquisition date, and allocated the remaining value to goodwill. The allocation was as follows (in millions):


	March 27,
	2009

Tangible assets acquired and liabilities assumed, net	$	5
Intangible assets		24
In-process research and development		14
Goodwill		23

Total	$	66

Intangible assets of $24 million primarily relates to existing technology that is amortized to cost of revenue over the weighted average useful life of 6 years. In-process research and development of $14 million relates to projects that had not reached technological feasibility and had no alternative future use, and therefore, did not qualify for capitalization and was recorded as an operating expense during 2009 in the accompanying consolidated statements of income.

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

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-Name Emerging Issues Task Force (EITF)

-Number 88-16

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 12: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51, 52

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 13: http://www.xbrl.org/2003/role/presentationRef

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-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Appendix F

-Paragraph F4

-Subparagraph e

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-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 67-73

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+ Details

Quarterly Results of Operations (unaudited)

12 Months Ended

Jul. 01, 2011

Quarterly Results of Operations (unaudited) [Abstract]

Quarterly Results of Operations (unaudited)


Note 15.	Quarterly Results of Operations (unaudited)


2011(1)	First		Second		Third		Fourth

Revenue, net	$	2,396	$	2,475	$	2,252	$	2,403
Gross margin		437		475		410		469
Operating income		211		240		158		172
Net income		197		225		146		158
Basic income per common share	$	0.86	$	0.98	$	0.63	$	0.68

Diluted income per common share	$	0.84	$	0.96	$	0.62	$	0.67

2010(2)
Revenue, net	$	2,208	$	2,619	$	2,641	$	2,382
Gross margin		514		687		665		535
Operating income		319		473		441		293
Net income		288		429		400		265
Basic income per common share	$	1.28	$	1.89	$	1.75	$	1.15

Diluted income per common share	$	1.25	$	1.85	$	1.71	$	1.13


(1)		The third quarter of 2011 included $10 million of expenses related to the planned acquisition of HGST. The fourth quarter of 2011 included a $25 million accrual for litigation contingencies, $7 million of expenses related to the planned acquisition of HGST, and $2 million of debt commitment fees related to the planned acquisition of HGST.

(2)		The fourth quarter of 2010 included $27 million in expenses related to litigation settlements.

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

+ References+ Details

Schedule II - Consolidated Valuation And Qualifying Accounts

12 Months Ended

Jul. 01, 2011

Consolidated Valuation And Qualifying Accounts [Abstract]

SCHEDULE II CONSOLIDATED VALUATION AND QUALIFYING ACCOUNTS

WESTERN DIGITAL CORPORATION

SCHEDULE II — CONSOLIDATED VALUATION AND QUALIFYING ACCOUNTS
Three years ended July 1, 2011
(in millions)


	Allowance for
	Doubtful
	Accounts

Balance at June 27, 2008	$	8
Additions charged to operations		9
Deductions		(3	)

Balance at July 3, 2009	$	14
Recoveries credited to operations		(6	)
Deductions		(2	)

Balance at July 2, 2010	$	6
Additions charged to operations		—
Deductions		(1	)

Balance at July 1, 2011	$	5

Organization and Summary of Significant Accounting Policies (Policies)

12 Months Ended

Jul. 01, 2011

Organization and Summary of Significant Accounting Policies and Supplemental Financial Statement Data [Abstract]

Fiscal Year

Fiscal Year

Basis of Presentation

Basis of Presentation

Cash and Cash Equivalents

Cash and Cash Equivalents

Investments

Investments

Fair Value of Financial Instruments

Fair Value of Financial Instruments

Concentration of Credit Risk

Concentration of Credit Risk

Inventory

Inventory

Property, Plant and Equipment

Property, Plant and Equipment

Goodwill and Other Long-Lived Assets

Goodwill and Other Long-Lived Assets

Revenue and Accounts Receivable

Revenue and Accounts Receivable

Warranty

Warranty

Litigation and Other Contingencies

Litigation and Other Contingencies

Advertising Expense

Advertising Expense

Income Taxes

Income Taxes

Income per Common Share

Income per Common Share

The following table illustrates the computation of basic and diluted income per common share (in millions, except per share data):


	Years Ended
	July 1,		July 2,		July 3,
	2011		2010		2009

Net income	$	726	$	1,382	$	470

Weighted average shares outstanding:
Basic		231		228		222
Employee stock options and other		4		5		4

Diluted		235		233		226

Income per common share:
Basic	$	3.14	$	6.06	$	2.12

Diluted	$	3.09	$	5.93	$	2.08

Anti-dilutive potential common shares excluded*		3		1		6


*		For purposes of computing diluted income per common share, certain potentially dilutive securities have been excluded from the calculation because their effect would have been anti-dilutive.

Stock-Based Compensation

Stock-based Compensation

Other Comprehensive Income (Loss)

Other Comprehensive Income (Loss)

Foreign Exchange Contracts

Foreign Exchange Contracts

Use of Estimates

Use of Estimates

Recent Accounting Pronouncements

Recent Accounting Pronouncements

Supplemental Financial Statement Data (Tables)

12 Months Ended

Jul. 01, 2011

Organization and Summary of Significant Accounting Policies and Supplemental Financial Statement Data [Abstract]

Inventories


	Years Ended
	July 1,		July 2,
	2011		2010
	(In millions)

Inventories:
Raw materials and component parts	$	172	$	159
Work-in-process		263		255
Finished goods		142		146

Total inventories	$	577	$	560

Property, Plant and Equipment


Property, Plant and Equipment:
Land and buildings	$	750		$	675
Machinery and equipment		3,963			3,470
Furniture and fixtures		9			9
Leasehold improvements		115			69

Total property, plant and equipment		4,837			4,223
Accumulated depreciation and amortization		(2,613	)		(2,064	)

Property, plant and equipment, net	$	2,224		$	2,159

Commitments and Contingencies (Tables)

12 Months Ended

Jul. 01, 2011

Commitments, Contingencies and Legal Proceedings [Abstract]

Future minimum lease payments under operating leases


2012	$	18
2013		17
2014		14
2015		11
2016		9
Thereafter		46

Total future minimum payments	$	115

Changes in accrual warranty


	2011			2010			2009

Warranty accrual, beginning of period	$	170		$	123		$	114
Charges to operations		172			183			126
Utilization		(160	)		(138	)		(111	)
Changes in estimate related to pre-existing warranties		(12	)		2			(6	)

Warranty accrual, end of period	$	170		$	170		$	123

- Definition

Tabular disclosure of a lessee's leasing arrangements including: (1) the basis on which contingent rental payments are determined, (2) the existence and terms of renewal or purchase options and escalation clauses, (3) restrictions imposed by lease arrangements, such as those concerning dividends, additional debt, and further leasing, (4) rent holidays, rent concessions, or leasehold improvement incentives and unusual provisions or conditions. Disclosure may also include the specific period used to amortize material leasehold improvements made at the inception of the lease or during the lease term. Additionally, for operating leases having initial or remaining noncancelable lease terms in excess of one year: (a) future minimum rental payments required as of the date of the latest balance sheet presented, in the aggregate and for each of the five succeeding fiscal years, (b) the total of minimum rentals to be received in the future under noncancelable subleases as of the date of the latest balance sheet presented, and (c) for all operating leases, rental expense for each period for which an income statement is presented, with separate amounts for minimum rentals, contingent rentals, and sublease rentals. Rental payments under leases with terms of a month or less that were not renewed need not be included.

+ References+ Details

Business Segment, Geographic Information and Major Customers (Tables)

12 Months Ended

Jul. 01, 2011

Business Segment Geographic Information and Major Customers [Abstract]

Summarize table of operations by geographic area


	2011		2010		2009

Net revenue(1):
United States	$	1,589	$	1,889	$	1,492
Asia		5,434		5,239		3,639
Europe, Middle East and Africa		2,196		2,260		2,008
Other		307		462		314

Total	$	9,526	$	9,850	$	7,453

Long-lived assets:
United States	$	1,285	$	1,173	$	1,043
Asia		1,345		1,379		954
Europe, Middle East and Africa		1		56		64

Total	$	2,631	$	2,608	$	2,061


(1)		Net revenue is attributed to geographic regions based on the ship to location of the customer.

- Definition

Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material. An entity may also provide subtotals of geographic information about groups of countries.

+ References+ Details

Shareholders' Equity (Tables)

12 Months Ended

Jul. 01, 2011

Shareholders Equity [Abstract]

Stock Option Activity


						Weighted Average
				Weighted Average		Remaining		Aggregate
	Number			Exercise Price		Contractual Life		Intrinsic
	of Shares			Per Share		(in years)		Value

Options outstanding at June 27, 2008		8.0		$	14.92
Granted		4.2			20.02
Exercised		(0.6	)		9.59
Canceled or expired		(0.3	)		20.10

Options outstanding at July 3, 2009		11.3		$	17.00
Granted		1.4			36.06
Exercised		(3.1	)		14.67
Canceled or expired		(0.2	)		22.78

Options outstanding at July 2, 2010		9.4		$	20.61
Granted		2.5			26.59
Exercised		(1.4	)		16.83
Canceled or expired		(0.3	)		26.21

Options outstanding at July 1, 2011		10.2		$	22.49		4.6	$	145

Exercisable at July 1, 2011		5.5		$	19.36		3.8	$	95

Vested and expected to vest after July 1, 2011		10.1		$	22.43		4.5	$	144

Options outstanding and exercisable under the Stock Plans


		Options Outstanding						Options Exercisable
				Weighted Average
				Remaining
Range of		Number		Contractual Life		Weighted Average		Number		Weighted Average
Exercise Prices		of Shares		(in years)		Exercise Price		of Shares		Exercise Price

$	2.10 – $13.76		1.6		2.5	$	8.98		1.6	$	8.97
$	13.95 – $20.55		2.2		4.6		17.59		1.4		18.11
$	21.29 – $25.95		2.3		4.2		23.89		1.6		23.70
$	26.17 – $26.17		2.2		6.2		26.17		—		26.17
$	27.64 – $40.66		1.9		4.9		33.91		0.9		32.85

			10.2		4.6	$	22.49		5.5	$	19.36

Fair value of stock options granted


	2011	2010	2009

Suboptimal exercise factor	1.81	1.73	1.73
Range of risk-free interest rates	0.20% to 2.90%	0.31% to 3.40%	0.38% to 3.44%
Range of expected stock price volatility	0.39 to 0.59	0.40 to 0.72	0.43 to 0.77
Weighted average expected volatility	0.52	0.57	0.55
Post-vesting termination rate	2.44%	3.57%	4.02%
Dividend yield	—	—	—
Fair value	$11.42	$17.09	$9.05

Fair values of all employee stock purchase plan rights granted


	ESPP
	2011			2010			2009

Option life (in years)		1.25			1.24			1.30
Risk-free interest rate		0.44	%		0.57	%		0.65	%
Stock price volatility		0.44			0.53			0.63
Dividend yield		—			—			—
Fair value	$	8.36		$	10.02		$	3.61

Restricted Stock Unit


				Weighted Average
	Number			Grant Date
	of Shares			Fair Value

RSUs outstanding at June 27, 2008		2.8		$	21.75
Granted		0.9			22.84
Vested		(0.5	)		23.18
Canceled or expired		(0.1	)		22.62

RSUs outstanding at July 3, 2009		3.1		$	21.80
Granted		1.2			38.42
Vested		(1.1	)		20.60
Canceled or expired		(0.1	)		27.84

RSUs outstanding at July 2, 2010		3.1		$	28.43
Granted		1.0			26.75
Vested		(0.8	)		24.03
Canceled or expired		(0.2	)		32.41

RSUs outstanding at July 1, 2011		3.1		$	28.85

Expected to vest after July 1, 2011		2.9		$	28.82

Summarizes table of all shares of common stock reserved for issuance


	Number
	of Shares

Maximum shares issuable in connection with:
Outstanding awards and shares available for award grants		25.4
ESPP		3.5

Total		28.9

- Definition

Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.

+ References+ Details

Income Taxes (Tables)

12 Months Ended

Jul. 01, 2011

Income Taxes [Abstract]

Domestic and foreign components of income before income taxes


	2011		2010		2009

Foreign	$	660	$	1,418	$	459
Domestic		120		102		42

Income before income taxes	$	780	$	1,520	$	501

Components of the provision for income taxes


	2011			2010			2009

Current:
Foreign	$	12		$	9		$	13
Domestic-federal		21			101			(7	)
Domestic-state		1			1			1
Deferred:
Domestic-federal		30			37			24
Domestic-state		(10	)		(10	)		—

Income tax provision	$	54		$	138		$	31

Deferred tax assets and liabilities


	2011			2010

Deferred tax assets:
Sales related reserves and accrued expenses not currently deductible	$	51		$	50
Accrued compensation and benefits not currently deductible		69			44
Domestic net operating loss (“NOL”) carryforward		49			52
Business credit carryforward		145			137
Other		53			47

Total deferred tax assets		367			330
Deferred tax liabilities:
Depreciation		(116	)		(58	)
Other		(10	)		(11	)

Total deferred tax liabilities		(126	)		(69	)

Deferred tax assets, net	$	241		$	261


	2011			2010

Deferred tax assets:
Current portion (included in other current assets)	$	108		$	81
Non-current portion (included in other non-current assets)		259			249

Total deferred tax assets		367			330
Deferred tax liabilities:
Current portion (included in other current assets)		(2	)		(2	)
Non-current portion (included in other non-current assets)		(124	)		(67	)

Total deferred tax liabilities		(126	)		(69	)

Deferred tax assets, net	$	241		$	261

U.S. Federal statutory rate to the Company's effective tax rate


	2011			2010			2009

U.S. Federal statutory rate		35	%		35	%		35	%
Tax rate differential on international income		(26	)		(26	)		(30	)
Tax effect of U.S. permanent differences		3			1			6
State income tax, net of federal tax		(1	)		—			1
Income tax credits		(4	)		(1	)		(8	)
Other		—			—			2

Effective tax rate		7	%		9	%		6	%

Total amounts of unrecognized tax benefits


Unrecognized tax benefit at July 2, 2010	$	230
Gross increases related to prior year tax positions		5
Gross decreases related to prior year tax positions		(11	)
Gross increases related to current year tax positions		24
Settlements/lapse of statute of limitations		(3	)

Unrecognized tax benefit at July 1, 2011	$	245

- Definition

Tabular disclosure of tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities (i.e., uncertain tax positions) and other types of income tax contingencies, including: (1) the policy on classification of interest and penalties; (2) a tabular reconciliation of the total amounts of unrecognized tax benefits at the beginning and end of the period; the total amount(s) of: (3) unrecognized tax benefits that, if recognized, would affect the effective tax rate, and (4) interest and penalties recognized in each of the income statement and balance sheet; (5) for positions for which it is reasonably possible that the total amounts unrecognized will significantly change within 12 months of the reporting date the: (i) nature of the uncertainty, (ii) nature of the event that could occur that would cause the change, and (iii) an estimate of the range of the reasonably possible change or a statement that an estimate of the range cannot be made; and (6) a description of tax years that remain subject to examination by major tax jurisdictions.

+ References+ Details

Fair Value Measurements (Tables)

12 Months Ended

Jul. 01, 2011

Fair Value Measurements [Abstract]

Financial assets measured at fair value on a recurring basis


	Fair Value Measurements at
	Reporting Date Using
	Quoted Prices
	in Active		Significant
	Markets for		Other			Significant
	Identical		Observable			Unobservable
	Instruments		Inputs			Inputs
	(Level 1)		(Level 2)			(Level 3)		Total

Assets:
Cash equivalents
Money market funds	$	721	$	—		$	—	$	721
U.S. Treasury securities		—		60			—		60
U.S. Government agency securities		—		78			—		78

Total cash equivalents		721		138			—		859

Auction-rate securities		—		—			15		15
Total assets at fair value	$	721	$	138		$	15	$	874

Liabilities:
Foreign exchange contracts	$	—	$	(5	)	$	—	$	(5	)

Total liabilities at fair value	$	—	$	(5	)	$	—	$	(5	)


	Fair Value Measurements at
	Reporting Date Using
	Quoted Prices
	in Active		Significant
	Markets for		Other		Significant
	Identical		Observable		Unobservable
	Assets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		Total

Cash equivalents
Money market funds	$	458	$	—	$	—	$	458
U.S. Treasury securities		—		385		—		385
U.S. Government agency securities		—		370		—		370

Total cash equivalents		458		755		—		1,213

Auction-rate securities		—		—		15		15
Foreign exchange contracts		—		17		—		17

Total assets at fair value	$	458	$	772	$	15	$	1,245

Changes in Level 3 financial assets measured on a recurring basis


	U.S.
	Government
	Agency			Auction-rate
	Securities			Securities			Total

July 3, 2009	$	1		$	18		$	19
Sales		—			(3	)		(3	)
Maturities		(1	)		—			(1	)

July 2, 2010	$	—		$	15		$	15

- Definition

Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income, and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

+ References+ Details

Foreign Exchange Contracts (Tables)

12 Months Ended

Jul. 01, 2011

Foreign Exchange Contracts [Abstract]

Fair value and balance sheet location

Asset Derivatives

Liability Derivatives

2011

2010

2011

2010

Derivatives Designated as

Balance Sheet

Hedging Instruments

Location

Fair Value

Location

Fair Value

Location

Fair Value

Location

Fair Value

Foreign exchange contracts

—

Other current assets

Accrued expenses

—

Gains (Losses) of Derivatives in Cash Flow Hedging Relationships

Amount of Gain (Loss)

Recognized in

Location of Gain (Loss)

Reclassified from

Accumulated OCI

Reclassified from

Accumulated OCI into

Derivatives in Cash

on Derivatives

Accumulated

Income

Flow Hedging Relationships

2011

2010

OCI into Income

2011

2010

Foreign exchange contracts

Cost of revenue

- Definition

Tabular disclosure of the location and amount of gains and losses reported in the statement of financial performance, or when applicable, the statement of financial position. For example, (a) gains and losses recognized in the income statement on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges and (b) gains and losses initially recognized in other comprehensive income on derivative instruments designated and qualifying as cash flow hedges.

+ References+ Details

- Definition

Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position.

+ References+ Details

Other Intangible Assets (Tables)

12 Months Ended

Jul. 01, 2011

Other Intangible Assets [Abstract]

Other Intangible Assets


	Weighted Average		Gross Carrying		Accumulated		Net Carrying
	Amortization Period		Amount		Amortization		Amount
	(in years)		(in millions)		(in millions)		(in millions)

Existing technology		9	$	127	$	59	$	68
Supply agreement		2		6		3		3

Total			$	133	$	62	$	71


	Weighted Average		Gross Carrying		Accumulated		Net Carrying
	Amortization Period		Amount		Amortization		Amount
	(in years)		(in millions)		(in millions)		(in millions)

Existing technology		9	$	127	$	45	$	82
Supply agreement		2		6		—		6

Total			$	133	$	45	$	88

- Definition

Tabular disclosure of amortizable intangibles assets, in total and by major class, including the gross carrying amount and accumulated amortization. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

+ References+ Details

Acquisition (Tables)

12 Months Ended

Jul. 01, 2011

Acquisitions [Abstract]

Acquisition of identifiable intangible assets, and liabilities assumed


	June 30,
	2010

Tangible assets acquired and liabilities assumed:
Inventories	$	35
Property and equipment		185
Accounts payables and other liabilities		(10	)
Intangible assets		11
Goodwill		12

Total	$	233


	March 27,
	2009

Tangible assets acquired and liabilities assumed, net	$	5
Intangible assets		24
In-process research and development		14
Goodwill		23

Total	$	66

- Definition

Tabular disclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities. This table does not include leveraged buyouts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 52

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Appendix F

-Paragraph F4

-Subparagraph e

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6909870&loc=d3e1392-128463

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6909870&loc=d3e1486-128463

+ Details

Quarterly Results of Operations (unaudited) (Tables)

12 Months Ended

Jul. 01, 2011

Quarterly Results of Operations (unaudited) [Abstract]

Quarterly Results of Operations (unaudited)


2011(1)	First		Second		Third		Fourth

Revenue, net	$	2,396	$	2,475	$	2,252	$	2,403
Gross margin		437		475		410		469
Operating income		211		240		158		172
Net income		197		225		146		158
Basic income per common share	$	0.86	$	0.98	$	0.63	$	0.68

Diluted income per common share	$	0.84	$	0.96	$	0.62	$	0.67

2010(2)
Revenue, net	$	2,208	$	2,619	$	2,641	$	2,382
Gross margin		514		687		665		535
Operating income		319		473		441		293
Net income		288		429		400		265
Basic income per common share	$	1.28	$	1.89	$	1.75	$	1.15

Diluted income per common share	$	1.25	$	1.85	$	1.71	$	1.13


(1)		The third quarter of 2011 included $10 million of expenses related to the planned acquisition of HGST. The fourth quarter of 2011 included a $25 million accrual for litigation contingencies, $7 million of expenses related to the planned acquisition of HGST, and $2 million of debt commitment fees related to the planned acquisition of HGST.

(2)		The fourth quarter of 2010 included $27 million in expenses related to litigation settlements.

Organization and Summary of Significant Accounting Policies (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Jul. 01, 2011	Apr. 01, 2011	Dec. 31, 2010	Oct. 01, 2010	Jul. 02, 2010	Apr. 02, 2010	Jan. 01, 2010	Oct. 02, 2009	Jul. 01, 2011	Jul. 02, 2010	Jul. 03, 2009
Computation of basic and diluted income per common share
Net income	$ 158	$ 146	$ 225	$ 197	$ 265	$ 400	$ 429	$ 288	$ 726	$ 1,382	$ 470
Weighted average shares outstanding:
Basic									231	228	222
Employee stock options and other									4	5	4
Diluted									235	233	226
Income per common share:
Basic income per common share	$ 0.68	$ 0.63	$ 0.98	$ 0.86	$ 1.15	$ 1.75	$ 1.89	$ 1.28	$ 3.14	$ 6.06	$ 2.12
Diluted income per common share	$ 0.67	$ 0.62	$ 0.96	$ 0.84	$ 1.13	$ 1.71	$ 1.85	$ 1.25	$ 3.09	$ 5.93	$ 2.08
Anti-dilutive potential common shares excluded									3	1	6

Organization and Summary of Significant Accounting Policies (Details Textuals) (USD $)	12 Months Ended
	Jul. 01, 2011	Jul. 02, 2010	Jul. 03, 2009
Organization and summary of significant accounting policies
Reserves for potential credit losses	$ 5,000,000	$ 6,000,000
Accounts receivable, net	1,206,000,000	1,256,000,000
Valuation of inventory under FIFO method	85.00%	82.00%
Minimum warranty period for company's product	1 year
Maximum warranty period for company's product	5 years
Selling, general and administrative expenses included advertising costs	11,000,000	7,000,000	5,000,000
Recognition of liabilities for uncertain tax upon ultimate settlement percentage description	greater than 50%
Maturity dates of Foreign Exchange Contracts	Not exceed 12 months
Notional amount	$ 1,500,000,000	$ 1,100,000,000
Original Maturities of Investments	Greater than three months
Building [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of Property Plant And Equipment Minimum	15
Estimated useful lives of Property Plant And Equipment Maximum	30
Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of Property Plant And Equipment Minimum	3
Estimated useful lives of Property Plant And Equipment Maximum	7

Supplemental Financial Statement Data (Details) (USD $) In Millions, unless otherwise specified	Jul. 01, 2011	Jul. 02, 2010
Property, Plant and Equipment:
Total property, plant and equipment	$ 4,837	$ 4,223
Accumulated depreciation and amortization	(2,613)	(2,064)
Property and equipment, net	2,224	2,159
Inventories:
Raw materials and component parts	172	159
Work-in-process	263	255
Finished goods	142	146
Total inventories	577	560
Land and Building [Member]
Property, Plant and Equipment:
Total property, plant and equipment	750	675
Machinery and Equipment [Member]
Property, Plant and Equipment:
Total property, plant and equipment	3,963	3,470
Furniture and Fixtures [Member]
Property, Plant and Equipment:
Total property, plant and equipment	9	9
Leasehold Improvements [Member]
Property, Plant and Equipment:
Total property, plant and equipment	$ 115	$ 69

- Definition

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

+ References+ Details

- Definition

Gross amount, at the balance sheet date, of long-lived physical assets used in the normal conduct of business and not intended for resale. This can include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

+ References+ Details

- Definition

Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

+ References+ Details

Debt (Details) (USD $) In Millions, unless otherwise specified				12 Months Ended
	Jul. 01, 2011	Jul. 02, 2010	Feb. 29, 2008	Jul. 01, 2011 Term Loan [Member]	Feb. 29, 2008 Term Loan [Member]
Long-term debt
Term loan	$ 294	$ 400		$ 294
Less amounts due in one year	(144)	(106)
Long-term debt	150	294
Debt (Textuals) [Abstract]
Term loan					500
Variable interest rate of term loan				1.44%
Remaining balance amount of loan	294	400		294
Total principle amount payable, 2012				144
Total principle amount payable, 2013				$ 150
Maturity date of term loan				Feb. 11, 2013
Debt (Additional) (Textuals) [Abstract]
Period of term loan facility			5 years

Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 01, 2011	Jul. 02, 2010	Jul. 03, 2009
Future minimum lease payments under operating leases
2012	$ 18
2013	17
2014	14
2015	11
2016	9
Thereafter	46
Total future minimum payments	115
Changes in accrual warranty
Warranty accrual, beginning of period	170	123	114
Charges to operations	172	183	126
Utilization	(160)	(138)	(111)
Changes in estimate related to pre-existing warranties	(12)	2	(6)
Warranty accrual, end of period	170	170	123
Commitments and Contingencies (Textuals) [Abstract]
Operating leases consist of leased property that expire at various dates	various dates through 2020
Rental Expense	23	22	21
Accrued warranty includes in other liabilities	38	41
2012	636
2013	6
2014	6
2015	5
2016	$ 1

Business Segment, Geographic Information and Major Customers (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Jul. 01, 2011	Apr. 01, 2011	Dec. 31, 2010	Oct. 01, 2010	Jul. 02, 2010	Apr. 02, 2010	Jan. 01, 2010	Oct. 02, 2009	Jul. 01, 2011	Jul. 02, 2010	Jul. 03, 2009
Net revenue:
Revenue, net (U.S)									$ 1,589	$ 1,889	$ 1,492
Revenue, net	2,403	2,252	2,475	2,396	2,382	2,641	2,619	2,208	9,526	9,850	7,453
Long-lived assets:
Long-lived assets (U.S)	1,285				1,173				1,285	1,173	1,043
Long-lived assets	2,631				2,608				2,631	2,608	2,061
Business Segment Geographic Information and Major Customers (Textuals) [Abstract]
Maximum contribution of customer in company's net revenue									10%, or more	10%, or more
Contribution of dell in company's net revenue											10.00%
Asia [Member]
Net revenue:
Revenue, net									5,434	5,239	3,639
Long-lived assets:
Long-lived assets	1,345				1,379				1,345	1,379	954
Europe, Middle East and Africa [Member]
Net revenue:
Revenue, net									2,196	2,260	2,008
Long-lived assets:
Long-lived assets	1				56				1	56	64
Others [Member]
Net revenue:
Revenue, net									$ 307	$ 462	$ 314

Western Digital Corporation 401(k) Plan (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 01, 2011	Jul. 02, 2010	Jul. 03, 2009
Western Digital Corporation 401(k) Plan (Textuals) [Abstract]
Terms of employer contribution	The Company makes a basic matching contribution on behalf of each participating eligible employee equal to fifty percent (50%) of the eligible participant’s pre-tax contributions for the contribution cycle not to exceed 5% of the eligible participant’s compensation; provided, however, that each eligible participant shall receive a minimum annual basic matching contribution equal to fifty percent (50%) of the first $4,000 of pre-tax contributions for any calendar year
Company contributions vest period	5 years
Company contributions	$ 9	$ 9	$ 7

Shareholders' Equity (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Jul. 01, 2011	Jul. 02, 2010	Jul. 03, 2009
Stock Option Activity
Options outstanding, Beginning Balance, Numbers of Shares	9.4	11.3	8.0
Options outstanding, Beginning Balance, Weighted Average Exercise Price	$ 20.61	$ 17.00	$ 14.92
Granted, Number of Shares	2.5	1.4	4.2
Granted, Weighted Average Exercise Price Per Share	$ 26.59	$ 36.06	$ 20.02
Exercised, Number Of Shares	(1.4)	(3.1)	(0.6)
Exercised, Weighted Average Exercise Price Per Share	$ 16.83	$ 14.67	$ 9.59
Canceled or expired, Number of Shares	(0.3)	(0.2)	(0.3)
Canceled or expired, Weighted Average Exercise Price Per Share	$ 26.21	$ 22.78	$ 20.10
Options outstanding, Ending Balance, Numbers of Shares	10.2	9.4	11.3
Options outstanding, Ending Balance, Weighted Average Exercise Price	$ 22.49	$ 20.61	$ 17.00
Options Outstanding, Ending Balance, Weighted Average Remaining Contractual Life (in years)	4.6
Options Outstanding, Ending Balance, Aggregate Intrinsic Value	$ 145
Exercisable at July 1, 2011, Number of Shares	5.5
Exercisable at July 1, 2011, Weighted Average Exercise Price Per Share	$ 19.36
Exercisable at July 1, 2011, Weighted Average Remaining Contractual Life	3.8
Exercisable at July 1, 2011, Aggregate Intrinsic Value	95
Vested and Expected to Vest after July 1, 2011	10.1
Vested and expected to vest after July 1, 2011, Weighted Average Exercise Price Per Share	$ 22.43
Vested and expected to vest after July 1, 2011, Weighted Average Remaining Contractual Life (in years)	4.5
Vested and expected to vest after July 1, 2011, Aggregate Intrinsic Value	$ 144

Shareholders' Equity (Details 1) (USD $) In Millions, except Per Share data, unless otherwise specified	Jul. 01, 2011
Options outstanding and exercisable under the Stock Plans
Options outstanding, Number of shares	10.2
Options outstanding, Weighted average remaining contractual life	4.6
Options outstanding, Weighted average exercise price	$ 22.49
Options exercisable, Number of shares	5.5
Options exercisable, Weighted average exercise price	$ 19.36
Range One [Member]
Options outstanding and exercisable under the Stock Plans
Range of Exercise Prices Lower limit	$ 2.1
Range of Exercise Prices Upper limit	$ 13.76
Options outstanding, Number of shares	1.6
Options outstanding, Weighted average remaining contractual life	2.5
Options outstanding, Weighted average exercise price	$ 8.98
Options exercisable, Number of shares	1.6
Options exercisable, Weighted average exercise price	$ 8.97
Range Two [Member]
Options outstanding and exercisable under the Stock Plans
Range of Exercise Prices Lower limit	$ 13.95
Range of Exercise Prices Upper limit	$ 20.55
Options outstanding, Number of shares	2.2
Options outstanding, Weighted average remaining contractual life	4.6
Options outstanding, Weighted average exercise price	$ 17.59
Options exercisable, Number of shares	1.4
Options exercisable, Weighted average exercise price	$ 18.11
Range Three [Member]
Options outstanding and exercisable under the Stock Plans
Range of Exercise Prices Lower limit	$ 21.29
Range of Exercise Prices Upper limit	$ 25.95
Options outstanding, Number of shares	2.3
Options outstanding, Weighted average remaining contractual life	4.2
Options outstanding, Weighted average exercise price	$ 23.89
Options exercisable, Number of shares	1.6
Options exercisable, Weighted average exercise price	$ 23.70
Range Four [Member]
Options outstanding and exercisable under the Stock Plans
Range of Exercise Prices Lower limit	$ 26.17
Range of Exercise Prices Upper limit	$ 26.17
Options outstanding, Number of shares	2.2
Options outstanding, Weighted average remaining contractual life	6.2
Options outstanding, Weighted average exercise price	$ 26.17
Options exercisable, Number of shares	0
Options exercisable, Weighted average exercise price	$ 26.17
Range Five [Member]
Options outstanding and exercisable under the Stock Plans
Range of Exercise Prices Lower limit	$ 27.64
Range of Exercise Prices Upper limit	$ 40.66
Options outstanding, Number of shares	1.9
Options outstanding, Weighted average remaining contractual life	4.9
Options outstanding, Weighted average exercise price	$ 33.91
Options exercisable, Number of shares	0.9
Options exercisable, Weighted average exercise price	$ 32.85

Shareholders' Equity (Details 2) (USD $)	12 Months Ended
Shareholders' Equity (Details 2) (USD $)	Jul. 01, 2011	Jul. 02, 2010	Jul. 03, 2009
Fair value of stock options granted
Suboptimal exercise factor	1.81	1.73	1.73
Risk-free interest rates, minimum	0.20%	0.31%	0.38%
Risk-free interest rates, maximum	2.90%	3.40%	3.44%
Expected stock price volatility, minimum	39.00%	40.00%	43.00%
Expected stock price volatility, maximum	59.00%	72.00%	77.00%
Weighted average expected volatility	52.00%	57.00%	55.00%
Post-vesting termination rate	2.44%	3.57%	4.02%
Dividend yield	0.00%	0.00%	0.00%
Fair value	$ 11.42	$ 17.09	$ 9.05

Shareholders' Equity (Details 3) (USD $)	12 Months Ended
Shareholders' Equity (Details 3) (USD $)	Jul. 01, 2011	Jul. 02, 2010	Jul. 03, 2009
Employee stock purchase plan
Option life (in years)	4.7	4.6	4.9
Dividend yield	0.00%	0.00%	0.00%
Fair value	$ 11.42	$ 17.09	$ 9.05
Employee Stock [Member]
Employee stock purchase plan
Option life (in years)	1.25	1.24	1.30
Risk-free interest rates	0.44%	0.57%	0.65%
Stock price volatility	44.00%	53.00%	63.00%
Dividend yield	0.00%	0.00%	0.00%
Fair value	$ 8.36	$ 10.02	$ 3.61

- Definition

The period of time an equity-based award is expected to be outstanding. An equity-based award's expected term is generally determined based on, among other factors, the instrument's contractual term and the effects of employees' expected exercise and post-vesting employment termination behavior.

+ References+ Details

- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ References+ Details

Shareholders Equity (Details 4) (Restricted Stock Units (RSUs) [Member], USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Jul. 01, 2011	Jul. 02, 2010	Jul. 03, 2009
Restricted Stock Units (RSUs) [Member]
Restricted Stock Unit
Numbers of Shares, Beginning Balance	3.1	3.1	2.8
Weighted Average Grant Date Fair Value Per Share, Beginning Balance	$ 28.43	$ 21.8	$ 21.75
Restricted stock, Number of share granted	1.0	1.2	0.9
Restricted stock, Granted weighted average grant date fair value per share	$ 26.75	$ 38.42	$ 22.84
Restricted stock, Number of share exercised	(0.8)	(1.1)	(0.5)
Restricted stock, Exercised weighted average grant date fair value per share	$ 24.03	$ 20.6	$ 23.18
Restricted stock, Number of share canceled or expired	(0.2)	(0.1)	(0.1)
Restricted stock, Canceled or expired weighted average grant date fair value per share	$ 32.41	$ 27.84	$ 22.62
Numbers of Shares, Ending Balance	3.1	3.1	3.1
Weighted Average Grant Date Fair Value Per Share, Ending Balance	$ 28.85	$ 28.43	$ 21.8
Number of share, Expected to vest after July 1, 2011	2.9
Weighted Average Grant Date Fair Value Per Share, Expected to vest after July 1, 2011	$ 28.82

Shareholders Equity (Details 5) In Millions, unless otherwise specified	Jul. 01, 2011
Summarizes table of all shares of common stock reserved for issuance
Shares of common stock reserved for issuance	28.9
Outstanding Awards and Shares Available For Award [Member]
Summarizes table of all shares of common stock reserved for issuance
Shares of common stock reserved for issuance	25.4
Employee Stock [Member]
Summarizes table of all shares of common stock reserved for issuance
Shares of common stock reserved for issuance	3.5

Shareholders' Equity (Details Textuals) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended	12 Months Ended			84 Months Ended
	Oct. 01, 2010	Jul. 01, 2011	Jul. 02, 2010	Jul. 03, 2009	Jul. 01, 2011
Additional Shareholders Equity (Textuals) [Abstract]
Authorized number of shares of common stock for award grants under performance incentive plan		37,200,000			37,200,000
Shareholders Equity (Textuals) [Abstract]
Common stock remain outstanding and exercisable under prior stock plans option for purchase		1,200,000			1,200,000
Incentive plan terminate		On September 20, 2014 unless terminated earlier by the Company’s Board of Directors
Shares issued in respect of any other type of award granted under the plan		1.35			1.35
Eligible employee payroll deduction amount for employee stock purchase plan		up to 10%
Percentage of market value for purchases within employee stock purchase plan		at 95%
Employee stock purchase plan offering period		24 months
Expenses on stock-based compensation		$ 37	$ 37	$ 24
Total compensation cost related to unvested stock options and ESPP rights issued		60			60
Weighted average vesting period		1.3
Expense related to the vesting of restricted stock unit awards		32	23	23
Unamortized fair value of all unvested restricted stock unit awards		41			41
Weighted average service period		2.2
Options outstanding to purchase shares with exercise price below company stock price		10,100,000			10,100,000
Options outstanding to purchase shares with exercise price below company stock price, intrinsic value		145			145
Aggregate intrinsic value of options exercised under the Company's stock option plan		25	72	8
Weighted average expected term of the Company's stock options		4.7	4.6	4.9
Aggregate value of restricted stock awards vested		23	43
Grant-date fair value of the shares underlying the restricted stock awards		26	45	19
Forfeiture rate of restricted stock unit valuation assumption		1.82%	1.55%	0.00%
Company repurchased shares of its common stock	1,800,000				20,000,000
Repurchase of common stock	$ 50	$ (50)		$ (36)	$ 334
Exercise price for stock purchase right		$ 50
Amount Of Company's Outstanding Common Stock Announced as Acquired or Tendered an Offer for Exercise		15% or more
Amount at which each stock right is redeemable by company		$ 0.001
Stock Repurchase Program [Member]
Additional Shareholders Equity (Textuals) [Abstract]
Authorized number of shares of common stock for award grants under performance incentive plan		750,000,000			750,000,000

Income Taxes (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 01, 2011	Jul. 02, 2010	Jul. 03, 2009
Domestic and foreign components of income before income taxes
Foreign	$ 660	$ 1,418	$ 459
Domestic	120	102	42
Income before income taxes	780	1,520	501
Current:
Foreign	12	9	13
Domestic-federal	21	101	(7)
Domestic-state	1	1	1
Deferred:
Domestic-federal	30	37	24
Domestic-state	(10)	(10)
Income tax provision	54	138	31
Deferred tax assets:
Sales related reserves and accrued expenses not currently deductible	51	50
Accrued compensation and benefits not currently deductible	69	44
Domestic net operating loss ("NOL") carryforward	49	52
Business credit carryforward	145	137
Other	53	47
Total deferred tax assets	367	330
Deferred tax liabilities:
Depreciation	(116)	(58)
Other	(10)	(11)
Total deferred tax liabilities	(126)	(69)
Deferred tax assets, net	241	261
Deferred tax assets:
Current portion (included in other current assets)	108	81
Non-current portion (included in other non-current assets)	259	249
Total deferred tax assets	367	330
Deferred tax liabilities:
Current portion (included in other current assets)	(2)	(2)
Non-current portion (included in other non-current assets)	(124)	(67)
Total deferred tax liabilities	(126)	(69)
Deferred tax assets, net	$ 241	$ 261

Income Taxes (Details 1) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 01, 2011	Jul. 02, 2010	Jul. 03, 2009
Effective Tax Rate
U.S. Federal statutory rate	35.00%	35.00%	35.00%
Tax rate differential on international income	(26.00%)	(26.00%)	(30.00%)
Tax effect of U.S. permanent differences	3.00%	1.00%	6.00%
State income tax, net of federal tax	(1.00%)		1.00%
Income tax credits	(4.00%)	(1.00%)	(8.00%)
Other			2.00%
Effective tax rate	7.00%	9.00%	6.00%
Uncertain Tax Positions
Unrecognized tax benefit at July 2, 2010	$ 230
Gross increases related to prior year tax positions	5
Gross decreases related to prior year tax positions	(11)
Gross increases related to current year tax positions	24
Settlements/lapse of statute of limitations	(3)
Unrecognized tax benefit at July 1, 2011	$ 245	$ 230

Income Taxes (Details Textuals) (USD $)	12 Months Ended
Income Taxes (Details Textuals) (USD $)	Jul. 01, 2011	Jul. 02, 2010	Jul. 03, 2009
Income Taxes (Textuals) [Abstract]
Net undistributed earnings from foreign subsidiaries	$ 4,700,000,000
Tax liability for undistributed earnings	1,600,000,000
Net operating loss benefits related to stock based compensation deductions	110,000,000	93,000,000
Net Operating loss benefits relates to current year stock based compensation deductions result of future benefit	17,000,000
Tax holidays and incentives increase net earnings	362,000,000	560,000,000	241,000,000
Tax holidays and incentives increase net earnings, share	$ 1.54	$ 2.4	$ 1.07
Federal Net Operating Loss Carryforward	185,000,000
State net operating loss carryforwards	52,000,000
Federal and state tax credit carryforwards	251,000,000
Credit carryforwards available to offset future taxable income	140,000,000
Expiry date of tax holiday in Malaysia, Singapore and Thailand	Through 2023
Amount of benefit that may be recognized for uncertain tax positions	largest amount that has a greater than 50% likelihood of being realized upon ultimate settlement
Unrecognized tax benefits	245,000,000	230,000,000
NOL carryforward available to offset future federal taxable income, Expiration period	From 2021 to 2030
NOL carryforward available to offset future state taxable income, Expiration period	From 2015 to 2020
Western Digital Corporation [Member]
Income Tax Examination [Line Items]
Estimated impact of proposed IRS adjustments on pre-tax income	970,000,000
Komag [Member]
Income Tax Examination [Line Items]
Estimated impact of proposed IRS adjustments on pre-tax income	$ 380,000,000

Fair Value Measurements (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Millions, unless otherwise specified	Jul. 01, 2011	Jul. 02, 2010
Assets:
Total cash equivalents	$ 859	$ 1,213
Total assets at fair value	874	1,245
Liabilities:
Liabilities At Fair Value	(5)
Quoted Prices in Active Markets for Identical Instruments (Level 1) [Member]
Assets:
Total cash equivalents	721	458
Total assets at fair value	721	458
Liabilities:
Liabilities At Fair Value	0
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Total cash equivalents	138	755
Total assets at fair value	138	772
Liabilities:
Liabilities At Fair Value	(5)
Significant Unobservable Inputs (Level 3) [Member]
Assets:
Total cash equivalents	0	0
Total assets at fair value	15	15
Liabilities:
Liabilities At Fair Value	0
Money Market Funds [Member]
Assets:
Total cash equivalents	721	458
Money Market Funds [Member] \| Quoted Prices in Active Markets for Identical Instruments (Level 1) [Member]
Assets:
Total cash equivalents	721	458
Money Market Funds [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Assets:
Total cash equivalents	0	0
Money Market Funds [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Assets:
Total cash equivalents	0	0
US Treasury Securities [Member]
Assets:
Total cash equivalents	60	385
US Treasury Securities [Member] \| Quoted Prices in Active Markets for Identical Instruments (Level 1) [Member]
Assets:
Total cash equivalents	0	0
US Treasury Securities [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Assets:
Total cash equivalents	60	385
US Treasury Securities [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Assets:
Total cash equivalents	0	0
U.S. Government agency securities [Member]
Assets:
Total cash equivalents	78	370
U.S. Government agency securities [Member] \| Quoted Prices in Active Markets for Identical Instruments (Level 1) [Member]
Assets:
Total cash equivalents	0	0
U.S. Government agency securities [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Assets:
Total cash equivalents	78	370
U.S. Government agency securities [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Assets:
Total cash equivalents	0	0
Auction Rate Securities [Member]
Assets:
Auction-rate securities	15	15
Auction Rate Securities [Member] \| Quoted Prices in Active Markets for Identical Instruments (Level 1) [Member]
Assets:
Auction-rate securities	0	0
Auction Rate Securities [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Assets:
Auction-rate securities	0	0
Auction Rate Securities [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Assets:
Auction-rate securities	15	15
Foreign Exchange Contract [Member]
Assets:
Foreign exchange contracts		17
Liabilities:
Foreign exchange contracts	(5)
Foreign Exchange Contract [Member] \| Quoted Prices in Active Markets for Identical Instruments (Level 1) [Member]
Assets:
Foreign exchange contracts		0
Liabilities:
Foreign exchange contracts	0
Foreign Exchange Contract [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Assets:
Foreign exchange contracts		17
Liabilities:
Foreign exchange contracts	(5)
Foreign Exchange Contract [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Assets:
Foreign exchange contracts		0
Liabilities:
Foreign exchange contracts	$ 0

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Company may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months.

+ References+ Details

- Definition

Fair values as of the balance sheet date of all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements.

+ References+ Details

- Definition

Fair values as of the balance sheet date of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements.

+ References+ Details

- Definition

+ References+ Details

Fair Value Measurements (Details 1) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 01, 2011	Jul. 02, 2010
Changes in Level 3 financial assets measured on a recurring basis
Beginning Balance	$ 15	$ 19
Sales		(3)
Maturities		(1)
Fair Value Measurements (Textuals) [Abstract]
Maturity of auction rate securities	Dates Through 2050
U.S. Government agency securities [Member]
Changes in Level 3 financial assets measured on a recurring basis
Beginning Balance		1
Maturities		(1)
Auction Rate Securities [Member]
Changes in Level 3 financial assets measured on a recurring basis
Beginning Balance		18
Sales		$ (3)

Foreign Exchange Contracts (Details) (Foreign Exchange Contract [Member], USD $) In Millions, unless otherwise specified	Jul. 01, 2011	Jul. 02, 2010
Fair value and balance sheet location
Derivatives Designated as Hedging Instruments Fair value, Asset derivatives	$ 0
Derivatives Designated as Hedging Instruments Fair Value, Liability derivatives		0
Other Current Assets [Member]
Fair value and balance sheet location
Derivatives Designated as Hedging Instruments Fair value, Asset derivatives		17
Accrued Expenses [Member]
Fair value and balance sheet location
Derivatives Designated as Hedging Instruments Fair Value, Liability derivatives	$ 5

- Definition

Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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- Definition

Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

+ References+ Details

Foreign Exchange Contracts (Details 1) (Cash Flow Hedging [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 01, 2011	Jul. 02, 2010
Cost of revenue [Member]
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
Amount of Gain (Loss) Reclassified from accumulated OCI into Income	$ 93	$ 55
Foreign Exchange Contract [Member]
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
Amount of Gain (Loss) Recognized in accumulated OCI on Derivatives	$ 77	$ 64

- Definition

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References+ Details

- Definition

The effective portion of gains on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

+ References+ Details

Foreign Exchange Contracts (Details Textuals) (USD $)	12 Months Ended
Foreign Exchange Contracts (Details Textuals) (USD $)	Jul. 01, 2011	Jul. 02, 2010
Foreign Exchange Contracts (Textuals) [Abstract]
Gains expected to be reclassified into earnings	$ 5,000,000
Foreign exchange contracts opened during the period by company	4,700,000,000	4,800,000,000
Foreign exchange contracts closed during the period by company	$ 3,200,000,000	$ 4,100,000,000

Other Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 01, 2011	Jul. 02, 2010	Jul. 03, 2009
Other Intangible Assets
Gross Carrying Amount	$ 133	$ 133
Accumulated Amortization	62	45
Other intangible assets, net	71	88
Other intangible assets (Textuals) [Abstract]
Company acquired intangible asset in Hoya acquisition		11
Amortization expense for intangible assets	17	12	11
Estimated future amortization in, 2012	16
Estimated future amortization in, 2013	13
Estimated future amortization in, 2014	13
Estimated future amortization in, 2015	12
Estimated future amortization in, 2016	9
Existing technology [Member]
Other Intangible Assets
Weighted Average Amortization Period	9	9
Gross Carrying Amount	127	127
Accumulated Amortization	59	45
Other intangible assets, net	68	82
Supply agreement [Member]
Other Intangible Assets
Weighted Average Amortization Period	2	2
Gross Carrying Amount	6	6
Accumulated Amortization	3
Other intangible assets, net	$ 3	$ 6

Restructuring And Sale Of Facility (Details Textuals) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Jul. 03, 2009	Jul. 03, 2009
Restructuring And Sale Of Facility (Textuals) [Abstract]
Headcount reductions		3,300
Restructuring costs totaled		$ 112
Asset impairment charges		81
Employee termination benefits		27
Contract termination and other exit costs		4
Cash expenditures related to the restructuring activities		31
Asset impairment related to land buildings machinery and equipment manufacturing facilities in Thailand and Malaysia		76
Asset impairment related to customer relationship intangible asset acquired from Komag		5
Sale of substrate manufacturing facility	29	29
Gain on sale of assets		$ 18

Acquisitions (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2010 Magnetic Media Operations [Member]	Mar. 27, 2009 Silicon Systems [Member]
Tangible assets acquired and liabilities assumed:
Inventories	$ 35
Property and equipment	185
Accounts payables and other liabilities	(10)
Tangible assets acquired and liabilities assumed, net		5
Intangible assets	11	24
In-process research and development		14
Goodwill	12	23
Total	$ 233	$ 66

- Definition

The total purchase price of the acquired entity. This includes cash paid to equity interest holders of the acquired entity, fair value of debt and equity securities issued to equity holders of the acquired entity, and transaction costs paid to third parties to consummate the acquisition.

+ References+ Details

Acquisitions (Details Textuals) (USD $) Share data in Millions, unless otherwise specified	12 Months Ended			12 Months Ended				3 Months Ended		12 Months Ended
	Jul. 01, 2011	Jul. 01, 2011 Magnetic Media Operations [Member]	Jun. 30, 2010 Magnetic Media Operations [Member]	Jul. 01, 2011 Silicon Systems [Member]	Mar. 27, 2009 Silicon Systems [Member]	Jul. 01, 2011 Semiconductor Wafer Fabrication Facility [Member]	May 25, 2010 Semiconductor Wafer Fabrication Facility [Member]	Jul. 01, 2011 Hitachi Global Storage Technologies [Member]	Apr. 01, 2011 Hitachi Global Storage Technologies [Member]	Jul. 01, 2011 Hitachi Global Storage Technologies [Member]	Mar. 07, 2011 Hitachi Global Storage Technologies [Member]
Acquisitions (Textuals) [Abstract]
Purchase price of planned acquisition							$ 35,000,000				$ 4,300,000,000
Company newly issued common stock											25
Fees to be paid to other party if acquisition does not close by a specified date											250,000,000
Expenses related to planned Acquisitions of HGST	17,000,000
Total Senior Credit Facility, Related to Acquisition											3,000,000,000
Total Senior Revolving Facility, Related to Acquisition											500,000,000
Total Senior Term Loan Facility, Related to Acquisition											2,500,000,000
Committed Total Credit Facility, Related to Acquisition											2,500,000,000
Committed Revolving Credit Facility, Related to Acquisition											500,000,000
Committed Term loan Facility, Related to Acquisition											2,000,000,000
Debt commitment fee per annum as percentage of unfunded amount committed to be borrowed under the senior facility											35.00%
Debt commitment fee										2,000,000
Total acquisition cost			233,000,000		66,000,000
Intangible assets			11,000,000		24,000,000
Amortized to cost of revenue over the weighted average useful life		3		6
Other direct acquisition costs					1,000,000
Cash paid to shareholders					65,000,000
Land and building							20,000,000
Equipment						15,000,000
In-process research and development					14,000,000
Business Combination, Acquisition Related Costs								$ 7,000,000	$ 10,000,000

Quarterly Results of Operations (unaudited) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Jul. 01, 2011	Apr. 01, 2011	Dec. 31, 2010	Oct. 01, 2010	Jul. 02, 2010	Apr. 02, 2010	Jan. 01, 2010	Oct. 02, 2009	Jul. 01, 2011	Jul. 02, 2010	Jul. 03, 2009
Quarterly Results of Operations (unaudited) [Abstract]
Revenue, net	$ 2,403	$ 2,252	$ 2,475	$ 2,396	$ 2,382	$ 2,641	$ 2,619	$ 2,208	$ 9,526	$ 9,850	$ 7,453
Gross margin	469	410	475	437	535	665	687	514	1,791	2,401	1,337
Operating income	172	158	240	211	293	441	473	319	781	1,525	519
Net income	$ 158	$ 146	$ 225	$ 197	$ 265	$ 400	$ 429	$ 288	$ 726	$ 1,382	$ 470
Basic income per common share	$ 0.68	$ 0.63	$ 0.98	$ 0.86	$ 1.15	$ 1.75	$ 1.89	$ 1.28	$ 3.14	$ 6.06	$ 2.12
Diluted income per common share	$ 0.67	$ 0.62	$ 0.96	$ 0.84	$ 1.13	$ 1.71	$ 1.85	$ 1.25	$ 3.09	$ 5.93	$ 2.08

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 07-4

-Paragraph 4

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Paragraph 36, 37, 38

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 5

-Section 03

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

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-Number 210

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

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+ Details

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6920043&loc=d3e565-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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Reference 8: http://www.xbrl.org/2003/role/presentationRef

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Reference 11: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

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Reference 12: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

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Reference 14: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Net Income

-URI http://asc.fasb.org/extlink&oid=6518256

Reference 15: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-Glossary Other Comprehensive Income

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Reference 16: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

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-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

+ Details

Quarterly Results of Operations (unaudited) (Details Textuals) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jul. 01, 2011	Jul. 02, 2010	Jul. 01, 2011 Hitachi Global Storage Technologies [Member]	Apr. 01, 2011 Hitachi Global Storage Technologies [Member]
Quarterly Results of Operations unaudited (Textuals) [Abstract]
Expenses related to the planned acquisition of HGST			$ 7	$ 10
Accrual for litigation contingencies	25
Debt commitment fees related to planned acquisition of HGST			2
Expense related to litigation settlements		$ 27

Schedule II - Consolidated Valuation And Qualifying Accounts (Details) (Allowance for Doubtful Accounts [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 01, 2011	Jul. 02, 2010	Jul. 03, 2009
Allowance for Doubtful Accounts [Member]
CONSOLIDATED VALUATION AND QUALIFYING ACCOUNTS
Beginning Balance	$ 6	$ 14	$ 8
Additions charged to operations	0		9
Recoveries credited to operations		(6)
Deductions	(1)	(2)	(3)
Ending Balance	$ 5	$ 6	$ 14