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Disclosure - Related Parties and Related Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Leases and Other Commitments link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Western Digital Corporation 401(k) Plan link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Shareholders’ Equity and Convertible Preferred Stock link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Income Tax Expense link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - Net Income (Loss) Per Common Share link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - Employee Termination, Asset Impairment and Other Charges link:presentationLink link:calculationLink link:definitionLink 9952172 - Disclosure - Supplier Finance Program link:presentationLink link:calculationLink link:definitionLink 9952173 - 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Disclosure - Business Segments, Geographic Information, and Concentrations of Risk - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9954491 - Disclosure - Business Segments, Geographic Information, and Concentrations of Risk - Goodwill Rollforward (Details) link:presentationLink link:calculationLink link:definitionLink 9954492 - Disclosure - Supplemental Financial Statement Data - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9954493 - Disclosure - Supplemental Financial Statement Data - Inventory (Details) link:presentationLink link:calculationLink link:definitionLink 9954494 - Disclosure - Supplemental Financial Statement Data - Property, Plant and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 9954495 - Disclosure - Supplemental Financial Statement Data - Movement in Standard Product Warranty Accrual (Details) link:presentationLink link:calculationLink link:definitionLink 9954496 - Disclosure - Supplemental Financial Statement Data - Total Warranty Accrual (Details) link:presentationLink link:calculationLink link:definitionLink 9954497 - Disclosure - Supplemental Financial Statement Data - Other Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9954498 - Disclosure - Supplemental Financial Statement Data - Accumulated Other Comprehensive Loss Roll Forward (Details) link:presentationLink link:calculationLink link:definitionLink 9954499 - Disclosure - Fair Value Measurements and Investments - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) link:presentationLink link:calculationLink link:definitionLink 9954500 - Disclosure - Fair Value Measurements and Investments - Debt Instrument Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 9954501 - Disclosure - Derivative Instruments and Hedging Activities - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9954502 - Disclosure - Debt - Schedule of Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9954502 - Disclosure - Debt - Schedule of Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9954503 - Disclosure - Debt - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9954504 - Disclosure - Debt - Schedule of Leverage Ratios (Details) link:presentationLink link:calculationLink link:definitionLink 9954505 - Disclosure - Debt - Debt Maturities (Details) link:presentationLink link:calculationLink link:definitionLink 9954506 - Disclosure - Pension and Other Post-Retirement Benefit Plans - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9954507 - Disclosure - Pension and Other Post-Retirement Benefit Plans - Obligations and Funded Status (Details) link:presentationLink link:calculationLink link:definitionLink 9954508 - Disclosure - Pension and Other Post-Retirement Benefit Plans - Unfunded Amounts Recognized on Consolidated Balance Sheets (Details) link:presentationLink link:calculationLink link:definitionLink 9954509 - Disclosure - Pension and Other Post-Retirement Benefit Plans - Weighted-Average Actuarial Assumptions used to Determine Benefit Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 9954510 - Disclosure - Pension and Other Post-Retirement Benefit Plans - Weighted-Average Actuarial Assumptions used to Determine Benefit Costs (Details) link:presentationLink link:calculationLink link:definitionLink 9954511 - Disclosure - Pension and Other Post-Retirement Benefit Plans - Defined Benefit Pension Plans' Major Asset Categories and Their Associated Fair Values (Details) link:presentationLink link:calculationLink link:definitionLink 9954512 - Disclosure - Related Parties and Related Commitments and Contingencies - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9954513 - Disclosure - 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Disclosure - Leases and Other Commitments - Minimum Lease Payments (Details) link:presentationLink link:calculationLink link:definitionLink 9954519 - Disclosure - Leases and Other Commitments - Minimum Lease Payments (Details) link:presentationLink link:calculationLink link:definitionLink 9954520 - Disclosure - Leases and Other Commitments - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9954521 - Disclosure - Leases and Other Commitments - Long-Term Commitments (Details) link:presentationLink link:calculationLink link:definitionLink 9954522 - Disclosure - Western Digital Corporation 401(k) Plan - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9954523 - Disclosure - Shareholders’ Equity and Convertible Preferred Stock - 2021 Long Term Incentive Plan and ESPP (Details) link:presentationLink link:calculationLink link:definitionLink 9954524 - Disclosure - Shareholders’ Equity and Convertible Preferred Stock - Stock-Based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9954525 - Disclosure - Shareholders’ Equity and Convertible Preferred Stock - Unrecognized Share-based Compensation (Details) link:presentationLink link:calculationLink link:definitionLink 9954526 - Disclosure - Shareholders’ Equity and Convertible Preferred Stock - Stock Option Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9954527 - Disclosure - Shareholders’ Equity and Convertible Preferred Stock - Restricted Stock Units And Performance Share Units (Details) link:presentationLink link:calculationLink link:definitionLink 9954528 - Disclosure - Shareholders’ Equity and Convertible Preferred Stock - Fair Values Assumptions User For Employee Stock Purchase Plan Granted (Details) link:presentationLink link:calculationLink link:definitionLink 9954529 - Disclosure - Shareholders’ Equity and Convertible Preferred Stock - Convertible Preferred Stock (Details) link:presentationLink link:calculationLink link:definitionLink 9954530 - Disclosure - Shareholders’ Equity and Convertible Preferred Stock - Stock Reserved for Issuance (Details) link:presentationLink link:calculationLink link:definitionLink 9954531 - Disclosure - Income Tax Expense - Domestic and Foreign Components of Income Before Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9954532 - Disclosure - Income Tax Expense - Components of Provision for Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9954533 - Disclosure - Income Tax Expense - Deferred Tax Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9954534 - Disclosure - Income Tax Expense - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9954535 - Disclosure - Income Tax Expense - Reconciliation of the U.S. Federal statutory rate (Details) link:presentationLink link:calculationLink link:definitionLink 9954536 - Disclosure - Income Tax Expense - 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