0000001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 0000002 - Document - Audit Information link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND SHAREHOLDERS’ EQUITY link:presentationLink link:calculationLink link:definitionLink 9952156 - Disclosure - Organization and Basis of Presentation link:presentationLink link:calculationLink link:definitionLink 9952157 - Disclosure - Recent Accounting Pronouncements link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - Disaggregated Revenue, Geographic Information, Concentrations of Risk, and Segment Reporting link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Discontinued Operations link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Supplemental Financial Statement Data link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Fair Value Measurements and Investments link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Debt link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Pension and Other Post-Retirement Benefit Plans link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Leases and Other Commitments link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Shareholders’ Equity and Convertible Preferred Stock link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Business Realignment Charges (Credits) link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Net Income (Loss) Per Common Share link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Legal Proceedings link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - Western Digital Corporation 401(k) Plan link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - Supplier Finance Program link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Organization and Basis of Presentation (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Disaggregated Revenue, Geographic Information, Concentrations of Risk, and Segment Reporting (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Discontinued Operations (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Supplemental Financial Statement Data (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Fair Value Measurements and Investments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Debt (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Pension and Other Post-Retirement Benefit Plans (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Leases and Other Commitments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Shareholders’ Equity and Convertible Preferred Stock (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Business Realignment Charges (Credits) (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Net Income (Loss) Per Common Share (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Supplier Finance Program (Tables) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Organization and Basis of Presentation - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Disaggregated Revenue, Geographic Information, Concentrations of Risk, and Segment Reporting - Disaggregation of Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Disaggregated Revenue, Geographic Information, Concentrations of Risk, and Segment Reporting - Revenue by Geography (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Disaggregated Revenue, Geographic Information, Concentrations of Risk, and Segment Reporting - Long-lived Assets by Geography (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Disaggregated Revenue, Geographic Information, Concentrations of Risk, and Segment Reporting - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Disaggregated Revenue, Geographic Information, Concentrations of Risk, and Segment Reporting - Schedule of Segment Reporting (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Discontinued Operations - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Discontinued Operations - Net Income (Loss) from Discontinued Operations, Net of Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Discontinued Operations - Selected Cash Flow Information from Discontinued Operations (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Supplemental Financial Statement Data - Inventory (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Supplemental Financial Statement Data - Property, Plant and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Supplemental Financial Statement Data - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Supplemental Financial Statement Data - Non-current Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Supplemental Financial Statement Data - Movement in Standard Product Warranty Accrual (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Supplemental Financial Statement Data - Total Warranty Accrual (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Supplemental Financial Statement Data - Other Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Supplemental Financial Statement Data - Accumulated Other Comprehensive Loss Roll Forward (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Fair Value Measurements and Investments - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Fair Value Measurements and Investments - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Fair Value Measurements and Investments - Debt Instrument Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Debt - Schedule of Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Debt - Schedule of Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Debt - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Pension and Other Post-Retirement Benefit Plans - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - Pension and Other Post-Retirement Benefit Plans - Obligations and Funded Status (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - Pension and Other Post-Retirement Benefit Plans - Unfunded Amounts Recognized on Consolidated Balance Sheets (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - Pension and Other Post-Retirement Benefit Plans - Weighted-Average Actuarial Assumptions used to Determine Benefit Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - Pension and Other Post-Retirement Benefit Plans - Weighted-Average Actuarial Assumptions used to Determine Benefit Costs (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - 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 9955552 - Disclosure - Leases and Other Commitments - Supplemental Balance Sheet (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - Leases and Other Commitments - Supplemental Cash Flow (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - Leases and Other Commitments - Minimum Lease Payments (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - Leases and Other Commitments - Long-Term Commitments (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - Shareholders’ Equity and Convertible Preferred Stock - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - Shareholders’ Equity and Convertible Preferred Stock - Stock-Based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - Shareholders’ Equity and Convertible Preferred Stock - Stock-Based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - Shareholders’ Equity and Convertible Preferred Stock - Unrecognized Share-based Compensation (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - Shareholders’ Equity and Convertible Preferred Stock - Restricted Stock Units And Performance Share Units (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - Shareholders’ Equity and Convertible Preferred Stock - Fair Values Assumptions User For Employee Stock Purchase Plan Granted (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - Shareholders’ Equity and Convertible Preferred Stock - Common Stock, Convertible Preferred Stock, Share Repurchase Program and Dividends (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - Shareholders’ Equity and Convertible Preferred Stock - Stock Reserved for Issuance (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - Income Taxes - Domestic and Foreign Components of Income Before Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - Income Taxes - Components of Provision for Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9955565 - Disclosure - Income Taxes - Deferred Tax Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955566 - Disclosure - Income Taxes - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955567 - Disclosure - Income Taxes - Reconciles the Income Tax Provision for Current Year (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - Income Taxes - Schedule of Cash Paid for Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9955569 - Disclosure - Income Taxes - Reconciliation of the U.S. Federal Statutory Rate for Prior Year (Details) link:presentationLink link:calculationLink link:definitionLink 9955570 - Disclosure - Income Taxes - NOL Carryforward (Details) link:presentationLink link:calculationLink link:definitionLink 9955571 - Disclosure - Income Taxes - Unrecognized Tax Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 9955572 - Disclosure - Business Realignment Charges (Credits) - Expense Recognition (Details) link:presentationLink link:calculationLink link:definitionLink 9955573 - Disclosure - Business Realignment Charges (Credits) - Business Realignment Activities (Details) link:presentationLink link:calculationLink link:definitionLink 9955574 - Disclosure - Net Income (Loss) Per Common Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955575 - Disclosure - Legal Proceedings (Details) link:presentationLink link:calculationLink link:definitionLink 9955576 - Disclosure - Western Digital Corporation 401(k) Plan (Details) link:presentationLink link:calculationLink link:definitionLink 9955577 - Disclosure - Supplier Finance Program - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955578 - Disclosure - Supplier Finance Program - Roll-Forward of Outstanding Obligations Under Supplier Finance Program (Details) link:presentationLink link:calculationLink link:definitionLink