SEC Info℠  
    Home      Search      My Interests      Help      Sign In      Please Sign In

Western Digital Corp. – ‘10-Q’ for 12/29/23 – ‘XML’

On:  Monday, 2/12/24, at 4:29pm ET   ·   For:  12/29/23   ·   Accession #:  106040-24-14   ·   File #:  1-08703

Previous ‘10-Q’:  ‘10-Q’ on 11/7/23 for 9/29/23   ·   Next & Latest:  ‘10-Q’ on 4/30/24 for 3/29/24   ·   6 References:   

Find Words in Filings emoji
 		  in    Show  and   ↓Hints

  As Of               Filer                 Filing    For·On·As Docs:Size

 2/12/24  Western Digital Corp.             10-Q       12/29/23  100:10M

Quarterly Report   —   Form 10-Q

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-Q        Quarterly Report                                    HTML   1.89M 
 2: EX-31.1     Certification -- §302 - SOA'02                      HTML     33K 
 3: EX-31.2     Certification -- §302 - SOA'02                      HTML     33K 
 4: EX-32.1     Certification -- §906 - SOA'02                      HTML     30K 
 5: EX-32.2     Certification -- §906 - SOA'02                      HTML     30K 
11: R1          Cover Page                                          HTML     81K 
12: R2          Condensed Consolidated Balance Sheets               HTML    140K 
13: R3          Condensed Consolidated Balance Sheets               HTML     54K 
                (Parenthetical)                                                  
14: R4          Condensed Consolidated Statements of Operations     HTML    121K 
15: R5          Condensed Consolidated Statements of Comprehensive  HTML     61K 
                Loss                                                             
16: R6          Condensed Consolidated Statements of Cash Flows     HTML    136K 
17: R7          Condensed Consolidated Statements of Convertible    HTML    110K 
                Preferred Stock and Shareholders? Equity                         
18: R8          Organization and Basis of Presentation              HTML     41K 
19: R9          Recent Accounting Pronouncements                    HTML     44K 
20: R10         Business Segments, Geographic Information, and      HTML    106K 
                Concentrations of Risk                                           
21: R11         Supplemental Financial Statement Data               HTML    107K 
22: R12         Fair Value Measurements and Investments             HTML    104K 
23: R13         Derivative Instruments and Hedging Activities       HTML     34K 
24: R14         Debt                                                HTML     59K 
25: R15         Pension and Other Post-Retirement Benefit Plans     HTML     51K 
26: R16         Related Parties and Related Commitments and         HTML     73K 
                Contingencies                                                    
27: R17         Leases and Other Commitments                        HTML     67K 
28: R18         Shareholders' Equity and Convertible Preferred      HTML    104K 
                Stock                                                            
29: R19         Income Tax Expense                                  HTML     57K 
30: R20         Net Loss Per Common Share                           HTML     57K 
31: R21         Employee Termination, Asset Impairment, and Other   HTML     67K 
32: R22         Supplier Finance Program                            HTML     33K 
33: R23         Legal Proceedings                                   HTML     32K 
34: R24         Revision of Previously Issued Financial Statements  HTML    168K 
35: R25         Pay vs Performance Disclosure                       HTML     42K 
36: R26         Insider Trading Arrangements                        HTML     56K 
37: R27         Organization and Basis of Presentation (Policies)   HTML     64K 
38: R28         Business Segments, Geographic Information, and      HTML    111K 
                Concentrations of Risk (Tables)                                  
39: R29         Supplemental Financial Statement Data (Tables)      HTML    113K 
40: R30         Fair Value Measurements and Investments (Tables)    HTML    102K 
41: R31         Debt (Tables)                                       HTML     47K 
42: R32         Pension and Other Post-Retirement Benefit Plans     HTML     49K 
                (Tables)                                                         
43: R33         Related Parties and Related Commitments and         HTML     70K 
                Contingencies (Tables)                                           
44: R34         Leases and Other Commitments (Tables)               HTML     67K 
45: R35         Shareholders' Equity and Convertible Preferred      HTML    106K 
                Stock (Tables)                                                   
46: R36         Income Tax Expense (Tables)                         HTML     49K 
47: R37         Net Loss Per Common Share (Tables)                  HTML     55K 
48: R38         Employee Termination, Asset Impairment, and Other   HTML     67K 
                (Tables)                                                         
49: R39         Revision of Previously Issued Financial Statements  HTML    168K 
                (Tables)                                                         
50: R40         Organization and Basis of Presentation -            HTML     31K 
                Additional Information (Details)                                 
51: R41         Business Segments, Geographic Information, and      HTML     67K 
                Concentrations of Risk - Reportable Segments                     
                (Details)                                                        
52: R42         Business Segments, Geographic Information, and      HTML     50K 
                Concentrations of Risk - Disaggregation of Revenue               
                (Details)                                                        
53: R43         Business Segments, Geographic Information, and      HTML     36K 
                Concentrations of Risk - Additional Information                  
                (Details)                                                        
54: R44         Business Segments, Geographic Information, and      HTML     40K 
                Concentrations of Risk - Goodwill Rollforward                    
                (Details)                                                        
55: R45         Supplemental Financial Statement Data - Additional  HTML     44K 
                Information (Details)                                            
56: R46         Supplemental Financial Statement Data - Inventory   HTML     39K 
                (Details)                                                        
57: R47         Supplemental Financial Statement Data - Property,   HTML     50K 
                Plant and Equipment (Details)                                    
58: R48         Supplemental Financial Statement Data - Warranty    HTML     39K 
                Accrual Roll Forward (Details)                                   
59: R49         Supplemental Financial Statement Data - Total       HTML     37K 
                Warranty Accrual (Details)                                       
60: R50         Supplemental Financial Statement Data - Other       HTML     37K 
                Liabilities (Details)                                            
61: R51         Supplemental Financial Statement Data -             HTML     63K 
                Accumulated Other Comprehensive Loss Roll Forward                
                (Details)                                                        
62: R52         Fair Value Measurements and Investments -           HTML     78K 
                Financial Assets and Liabilities Measured at Fair                
                Value on Recurring Basis (Details)                               
63: R53         Fair Value Measurements and Investments - Debt      HTML     77K 
                Instrument Fair Value (Details)                                  
64: R54         Derivative Instruments and Hedging Activities       HTML     32K 
                (Details)                                                        
65: R55         Debt - Schedule of Debt (Details)                   HTML     72K 
66: R56         Debt - Additional Information (Details)             HTML    119K 
67: R57         Pension and Other Post-Retirement Benefit Plans -   HTML     31K 
                Additional Information (Details)                                 
68: R58         Pension and Other Post-Retirement Benefit Plans -   HTML     37K 
                Obligations and Funded Status (Details)                          
69: R59         Pension and Other Post-Retirement Benefit Plans -   HTML     38K 
                Unfunded Amounts Recognized on Consolidated                      
                Balance Sheets (Details)                                         
70: R60         Related Parties and Related Commitments and         HTML     79K 
                Contingencies - Additional Information (Details)                 
71: R61         Related Parties and Related Commitments and         HTML     49K 
                Contingencies - Equity Investments (Details)                     
72: R62         Related Parties and Related Commitments and         HTML     46K 
                Contingencies - Maximum Loss Exposure (Details)                  
73: R63         Related Parties and Related Commitments and         HTML     35K 
                Contingencies - JV Lease Guarantees (Details)                    
74: R64         Related Parties and Related Commitments and         HTML     52K 
                Contingencies - Joint Venture Lease Amounts                      
                (Details)                                                        
75: R65         Leases and Other Commitments - Supplemental         HTML     65K 
                Balance Sheet (Details)                                          
76: R66         Leases and Other Commitments - Supplemental Cash    HTML     36K 
                Flow (Details)                                                   
77: R67         Leases and Other Commitments - Sale Leaseback       HTML     44K 
                (Details)                                                        
78: R68         Leases and Other Commitments - Long-Term            HTML     42K 
                Commitments (Details)                                            
79: R69         Shareholders' Equity and Convertible Preferred      HTML     56K 
                Stock - Stock-Based Compensation Expense (Details)               
80: R70         Shareholders' Equity and Convertible Preferred      HTML     46K 
                Stock - Unrecognized Share-based Compensation                    
                (Details)                                                        
81: R71         Shareholders' Equity and Convertible Preferred      HTML     44K 
                Stock - Stock Option Activity (Details)                          
82: R72         Shareholders' Equity and Convertible Preferred      HTML     55K 
                Stock - Restricted Stock Units And Performance                   
                Share Units (Details)                                            
83: R73         Shareholders' Equity and Convertible Preferred      HTML     70K 
                Stock - Convertible Preferred Stock (Details)                    
84: R74         Income Tax Expense - Tax Expense and Effective Tax  HTML     40K 
                Rate (Details)                                                   
85: R75         Income Tax Expense - Additional Information         HTML     46K 
                (Details)                                                        
86: R76         Income Tax Expense - Unrecognized Tax Benefits      HTML     43K 
                (Details)                                                        
87: R77         Net Loss Per Common Share - Earnings Per Share,     HTML     74K 
                Basic and Diluted (Details)                                      
88: R78         Employee Termination, Asset Impairment, and Other   HTML     45K 
                - Expense Recognition (Details)                                  
89: R79         Employee Termination, Asset Impairment, and Other   HTML     44K 
                - Business Realignment Activities (Details)                      
90: R80         Supplier Finance Program (Details)                  HTML     38K 
91: R81         Revision of Previously Issued Financial Statements  HTML     96K 
                - Condensed Consolidated Statement of Operations                 
                (Details)                                                        
92: R82         Revision of Previously Issued Financial Statements  HTML     99K 
                - Condensed Consolidated Statement of                            
                Comprehensive Loss (Details)                                     
93: R83         Revision of Previously Issued Financial Statements  HTML     61K 
                - Condensed Consolidated Statement of Cash Flows                 
                (Details)                                                        
94: R84         Revision of Previously Issued Financial Statements  HTML     83K 
                - Condensed Consolidated Statement of                            
                Shareholders? Equity (Details)                                   
95: R85         Revision of Previously Issued Financial Statements  HTML     74K 
                - Condensed Consolidated Balance Sheet (Details)                 
97: XML         IDEA XML File -- Filing Summary                      XML    188K 
100: XML         XBRL Instance -- wdc-20231229_htm                    XML   2.63M  
96: EXCEL       IDEA Workbook of Financial Report Info              XLSX    181K 
 7: EX-101.CAL  XBRL Calculations -- wdc-20231229_cal                XML    237K 
 8: EX-101.DEF  XBRL Definitions -- wdc-20231229_def                 XML    781K 
 9: EX-101.LAB  XBRL Labels -- wdc-20231229_lab                      XML   2.11M 
10: EX-101.PRE  XBRL Presentations -- wdc-20231229_pre               XML   1.30M 
 6: EX-101.SCH  XBRL Schema -- wdc-20231229                          XSD    202K 
98: JSON        XBRL Instance as JSON Data -- MetaLinks              622±   924K 
99: ZIP         XBRL Zipped Folder -- 0000106040-24-000014-xbrl      Zip    441K

‘XML’   —   IDEA XML File — Filing Summary

This Document is an IDEA XML File.

                                                                                                                                                                                
<?xml version="1.0" encoding="windows-1252"?>
<FilingSummary>
<Version> 3.24.0.1 </Version>
<ProcessingTime/>
<ReportFormat> html </ReportFormat>
<ContextCount> 358 </ContextCount>
<ElementCount> 363 </ElementCount>
<EntityCount> 1 </EntityCount>
<FootnotesReported> false </FootnotesReported>
<SegmentCount> 98 </SegmentCount>
<ScenarioCount> 0 </ScenarioCount>
<TuplesReported> false </TuplesReported>
<UnitCount> 10 </UnitCount>
<MyReports>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R1.htm </HtmlFileName>
<LongName> 0000001 - Document - Cover Page </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/CoverPage </Role>
<ShortName> Cover Page </ShortName>
<MenuCategory> Cover </MenuCategory>
<Position> 1 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R2.htm </HtmlFileName>
<LongName> 0000002 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS </Role>
<ShortName> CONDENSED CONSOLIDATED BALANCE SHEETS </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 2 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R3.htm </HtmlFileName>
<LongName> 0000003 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical </Role>
<ShortName> CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 3 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R4.htm </HtmlFileName>
<LongName> 0000004 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS </Role>
<ShortName> CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 4 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R5.htm </HtmlFileName>
<LongName> 0000005 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSS </Role>
<ShortName> CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 5 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R6.htm </HtmlFileName>
<LongName> 0000006 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS </Role>
<ShortName> CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 6 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R7.htm </HtmlFileName>
<LongName> 0000007 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND SHAREHOLDERS??? EQUITY </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCONVERTIBLEPREFERREDSTOCKANDSHAREHOLDERSEQUITY </Role>
<ShortName> CONDENSED CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND SHAREHOLDERS??? EQUITY </ShortName>
<MenuCategory> Statements </MenuCategory>
<Position> 7 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R8.htm </HtmlFileName>
<LongName> 0000008 - Disclosure - Organization and Basis of Presentation </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/OrganizationandBasisofPresentation </Role>
<ShortName> Organization and Basis of Presentation </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 8 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R9.htm </HtmlFileName>
<LongName> 0000009 - Disclosure - Recent Accounting Pronouncements </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/RecentAccountingPronouncements </Role>
<ShortName> Recent Accounting Pronouncements </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 9 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R10.htm </HtmlFileName>
<LongName> 0000010 - Disclosure - Business Segments, Geographic Information, and Concentrations of Risk </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/BusinessSegmentsGeographicInformationandConcentrationsofRisk </Role>
<ShortName> Business Segments, Geographic Information, and Concentrations of Risk </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 10 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R11.htm </HtmlFileName>
<LongName> 0000011 - Disclosure - Supplemental Financial Statement Data </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/SupplementalFinancialStatementData </Role>
<ShortName> Supplemental Financial Statement Data </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 11 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R12.htm </HtmlFileName>
<LongName> 0000012 - Disclosure - Fair Value Measurements and Investments </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/FairValueMeasurementsandInvestments </Role>
<ShortName> Fair Value Measurements and Investments </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 12 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R13.htm </HtmlFileName>
<LongName> 0000013 - Disclosure - Derivative Instruments and Hedging Activities </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/DerivativeInstrumentsandHedgingActivities </Role>
<ShortName> Derivative Instruments and Hedging Activities </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 13 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R14.htm </HtmlFileName>
<LongName> 0000014 - Disclosure - Debt </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/Debt </Role>
<ShortName> Debt </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 14 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R15.htm </HtmlFileName>
<LongName> 0000015 - Disclosure - Pension and Other Post-Retirement Benefit Plans </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/PensionandOtherPostRetirementBenefitPlans </Role>
<ShortName> Pension and Other Post-Retirement Benefit Plans </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 15 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R16.htm </HtmlFileName>
<LongName> 0000016 - Disclosure - Related Parties and Related Commitments and Contingencies </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/RelatedPartiesandRelatedCommitmentsandContingencies </Role>
<ShortName> Related Parties and Related Commitments and Contingencies </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 16 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R17.htm </HtmlFileName>
<LongName> 0000017 - Disclosure - Leases and Other Commitments </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/LeasesandOtherCommitments </Role>
<ShortName> Leases and Other Commitments </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 17 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R18.htm </HtmlFileName>
<LongName> 0000018 - Disclosure - Shareholders' Equity and Convertible Preferred Stock </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/ShareholdersEquityandConvertiblePreferredStock </Role>
<ShortName> Shareholders' Equity and Convertible Preferred Stock </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 18 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R19.htm </HtmlFileName>
<LongName> 0000019 - Disclosure - Income Tax Expense </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/IncomeTaxExpense </Role>
<ShortName> Income Tax Expense </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 19 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R20.htm </HtmlFileName>
<LongName> 0000020 - Disclosure - Net Loss Per Common Share </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/NetLossPerCommonShare </Role>
<ShortName> Net Loss Per Common Share </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 20 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R21.htm </HtmlFileName>
<LongName> 0000021 - Disclosure - Employee Termination, Asset Impairment, and Other </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/EmployeeTerminationAssetImpairmentandOther </Role>
<ShortName> Employee Termination, Asset Impairment, and Other </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 21 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R22.htm </HtmlFileName>
<LongName> 0000022 - Disclosure - Supplier Finance Program </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/SupplierFinanceProgram </Role>
<ShortName> Supplier Finance Program </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 22 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R23.htm </HtmlFileName>
<LongName> 0000023 - Disclosure - Legal Proceedings </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/LegalProceedings </Role>
<ShortName> Legal Proceedings </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 23 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R24.htm </HtmlFileName>
<LongName> 0000024 - Disclosure - Revision of Previously Issued Financial Statements </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/RevisionofPreviouslyIssuedFinancialStatements </Role>
<ShortName> Revision of Previously Issued Financial Statements </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 24 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R25.htm </HtmlFileName>
<LongName> 995410 - Disclosure - Pay vs Performance Disclosure </LongName>
<ReportType> Sheet </ReportType>
<Role> http://xbrl.sec.gov/ecd/role/PvpDisclosure </Role>
<ShortName> Pay vs Performance Disclosure </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 25 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R26.htm </HtmlFileName>
<LongName> 995445 - Disclosure - Insider Trading Arrangements </LongName>
<ReportType> Sheet </ReportType>
<Role> http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements </Role>
<ShortName> Insider Trading Arrangements </ShortName>
<MenuCategory> Notes </MenuCategory>
<Position> 26 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R27.htm </HtmlFileName>
<LongName> 9954471 - Disclosure - Organization and Basis of Presentation (Policies) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/OrganizationandBasisofPresentationPolicies </Role>
<ShortName> Organization and Basis of Presentation (Policies) </ShortName>
<MenuCategory> Policies </MenuCategory>
<ParentRole> http://www.wdc.com/role/RecentAccountingPronouncements </ParentRole>
<Position> 27 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R28.htm </HtmlFileName>
<LongName> 9954472 - Disclosure - Business Segments, Geographic Information, and Concentrations of Risk (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/BusinessSegmentsGeographicInformationandConcentrationsofRiskTables </Role>
<ShortName> Business Segments, Geographic Information, and Concentrations of Risk (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.wdc.com/role/BusinessSegmentsGeographicInformationandConcentrationsofRisk </ParentRole>
<Position> 28 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R29.htm </HtmlFileName>
<LongName> 9954473 - Disclosure - Supplemental Financial Statement Data (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/SupplementalFinancialStatementDataTables </Role>
<ShortName> Supplemental Financial Statement Data (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.wdc.com/role/SupplementalFinancialStatementData </ParentRole>
<Position> 29 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R30.htm </HtmlFileName>
<LongName> 9954474 - Disclosure - Fair Value Measurements and Investments (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/FairValueMeasurementsandInvestmentsTables </Role>
<ShortName> Fair Value Measurements and Investments (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.wdc.com/role/FairValueMeasurementsandInvestments </ParentRole>
<Position> 30 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R31.htm </HtmlFileName>
<LongName> 9954475 - Disclosure - Debt (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/DebtTables </Role>
<ShortName> Debt (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.wdc.com/role/Debt </ParentRole>
<Position> 31 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R32.htm </HtmlFileName>
<LongName> 9954476 - Disclosure - Pension and Other Post-Retirement Benefit Plans (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/PensionandOtherPostRetirementBenefitPlansTables </Role>
<ShortName> Pension and Other Post-Retirement Benefit Plans (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.wdc.com/role/PensionandOtherPostRetirementBenefitPlans </ParentRole>
<Position> 32 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R33.htm </HtmlFileName>
<LongName> 9954477 - Disclosure - Related Parties and Related Commitments and Contingencies (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/RelatedPartiesandRelatedCommitmentsandContingenciesTables </Role>
<ShortName> Related Parties and Related Commitments and Contingencies (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.wdc.com/role/RelatedPartiesandRelatedCommitmentsandContingencies </ParentRole>
<Position> 33 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R34.htm </HtmlFileName>
<LongName> 9954478 - Disclosure - Leases and Other Commitments (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/LeasesandOtherCommitmentsTables </Role>
<ShortName> Leases and Other Commitments (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.wdc.com/role/LeasesandOtherCommitments </ParentRole>
<Position> 34 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R35.htm </HtmlFileName>
<LongName> 9954479 - Disclosure - Shareholders' Equity and Convertible Preferred Stock (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/ShareholdersEquityandConvertiblePreferredStockTables </Role>
<ShortName> Shareholders' Equity and Convertible Preferred Stock (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.wdc.com/role/ShareholdersEquityandConvertiblePreferredStock </ParentRole>
<Position> 35 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R36.htm </HtmlFileName>
<LongName> 9954480 - Disclosure - Income Tax Expense (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/IncomeTaxExpenseTables </Role>
<ShortName> Income Tax Expense (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.wdc.com/role/IncomeTaxExpense </ParentRole>
<Position> 36 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R37.htm </HtmlFileName>
<LongName> 9954481 - Disclosure - Net Loss Per Common Share (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/NetLossPerCommonShareTables </Role>
<ShortName> Net Loss Per Common Share (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.wdc.com/role/NetLossPerCommonShare </ParentRole>
<Position> 37 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R38.htm </HtmlFileName>
<LongName> 9954482 - Disclosure - Employee Termination, Asset Impairment, and Other (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/EmployeeTerminationAssetImpairmentandOtherTables </Role>
<ShortName> Employee Termination, Asset Impairment, and Other (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.wdc.com/role/EmployeeTerminationAssetImpairmentandOther </ParentRole>
<Position> 38 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R39.htm </HtmlFileName>
<LongName> 9954483 - Disclosure - Revision of Previously Issued Financial Statements (Tables) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/RevisionofPreviouslyIssuedFinancialStatementsTables </Role>
<ShortName> Revision of Previously Issued Financial Statements (Tables) </ShortName>
<MenuCategory> Tables </MenuCategory>
<ParentRole> http://www.wdc.com/role/RevisionofPreviouslyIssuedFinancialStatements </ParentRole>
<Position> 39 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R40.htm </HtmlFileName>
<LongName> 9954484 - Disclosure - Organization and Basis of Presentation - Additional Information (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/OrganizationandBasisofPresentationAdditionalInformationDetails </Role>
<ShortName> Organization and Basis of Presentation - Additional Information (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 40 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R41.htm </HtmlFileName>
<LongName> 9954485 - Disclosure - Business Segments, Geographic Information, and Concentrations of Risk - Reportable Segments (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/BusinessSegmentsGeographicInformationandConcentrationsofRiskReportableSegmentsDetails </Role>
<ShortName> Business Segments, Geographic Information, and Concentrations of Risk - Reportable Segments (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 41 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R42.htm </HtmlFileName>
<LongName> 9954486 - Disclosure - Business Segments, Geographic Information, and Concentrations of Risk - Disaggregation of Revenue (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/BusinessSegmentsGeographicInformationandConcentrationsofRiskDisaggregationofRevenueDetails </Role>
<ShortName> Business Segments, Geographic Information, and Concentrations of Risk - Disaggregation of Revenue (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 42 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R43.htm </HtmlFileName>
<LongName> 9954487 - Disclosure - Business Segments, Geographic Information, and Concentrations of Risk - Additional Information (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/BusinessSegmentsGeographicInformationandConcentrationsofRiskAdditionalInformationDetails </Role>
<ShortName> Business Segments, Geographic Information, and Concentrations of Risk - Additional Information (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 43 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R44.htm </HtmlFileName>
<LongName> 9954488 - Disclosure - Business Segments, Geographic Information, and Concentrations of Risk - Goodwill Rollforward (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/BusinessSegmentsGeographicInformationandConcentrationsofRiskGoodwillRollforwardDetails </Role>
<ShortName> Business Segments, Geographic Information, and Concentrations of Risk - Goodwill Rollforward (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 44 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R45.htm </HtmlFileName>
<LongName> 9954489 - Disclosure - Supplemental Financial Statement Data - Additional Information (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/SupplementalFinancialStatementDataAdditionalInformationDetails </Role>
<ShortName> Supplemental Financial Statement Data - Additional Information (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 45 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R46.htm </HtmlFileName>
<LongName> 9954490 - Disclosure - Supplemental Financial Statement Data - Inventory (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/SupplementalFinancialStatementDataInventoryDetails </Role>
<ShortName> Supplemental Financial Statement Data - Inventory (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 46 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R47.htm </HtmlFileName>
<LongName> 9954491 - Disclosure - Supplemental Financial Statement Data - Property, Plant and Equipment (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/SupplementalFinancialStatementDataPropertyPlantandEquipmentDetails </Role>
<ShortName> Supplemental Financial Statement Data - Property, Plant and Equipment (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 47 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R48.htm </HtmlFileName>
<LongName> 9954492 - Disclosure - Supplemental Financial Statement Data - Warranty Accrual Roll Forward (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/SupplementalFinancialStatementDataWarrantyAccrualRollForwardDetails </Role>
<ShortName> Supplemental Financial Statement Data - Warranty Accrual Roll Forward (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 48 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R49.htm </HtmlFileName>
<LongName> 9954493 - Disclosure - Supplemental Financial Statement Data - Total Warranty Accrual (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/SupplementalFinancialStatementDataTotalWarrantyAccrualDetails </Role>
<ShortName> Supplemental Financial Statement Data - Total Warranty Accrual (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 49 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R50.htm </HtmlFileName>
<LongName> 9954494 - Disclosure - Supplemental Financial Statement Data - Other Liabilities (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/SupplementalFinancialStatementDataOtherLiabilitiesDetails </Role>
<ShortName> Supplemental Financial Statement Data - Other Liabilities (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 50 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R51.htm </HtmlFileName>
<LongName> 9954495 - Disclosure - Supplemental Financial Statement Data - Accumulated Other Comprehensive Loss Roll Forward (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/SupplementalFinancialStatementDataAccumulatedOtherComprehensiveLossRollForwardDetails </Role>
<ShortName> Supplemental Financial Statement Data - Accumulated Other Comprehensive Loss Roll Forward (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 51 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R52.htm </HtmlFileName>
<LongName> 9954496 - Disclosure - Fair Value Measurements and Investments - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/FairValueMeasurementsandInvestmentsFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails </Role>
<ShortName> Fair Value Measurements and Investments - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 52 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R53.htm </HtmlFileName>
<LongName> 9954497 - Disclosure - Fair Value Measurements and Investments - Debt Instrument Fair Value (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/FairValueMeasurementsandInvestmentsDebtInstrumentFairValueDetails </Role>
<ShortName> Fair Value Measurements and Investments - Debt Instrument Fair Value (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 53 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R54.htm </HtmlFileName>
<LongName> 9954498 - Disclosure - Derivative Instruments and Hedging Activities (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/DerivativeInstrumentsandHedgingActivitiesDetails </Role>
<ShortName> Derivative Instruments and Hedging Activities (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.wdc.com/role/DerivativeInstrumentsandHedgingActivities </ParentRole>
<Position> 54 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R55.htm </HtmlFileName>
<LongName> 9954499 - Disclosure - Debt - Schedule of Debt (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/DebtScheduleofDebtDetails </Role>
<ShortName> Debt - Schedule of Debt (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 55 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R56.htm </HtmlFileName>
<LongName> 9954500 - Disclosure - Debt - Additional Information (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/DebtAdditionalInformationDetails </Role>
<ShortName> Debt - Additional Information (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 56 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R57.htm </HtmlFileName>
<LongName> 9954501 - Disclosure - Pension and Other Post-Retirement Benefit Plans - Additional Information (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/PensionandOtherPostRetirementBenefitPlansAdditionalInformationDetails </Role>
<ShortName> Pension and Other Post-Retirement Benefit Plans - Additional Information (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 57 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R58.htm </HtmlFileName>
<LongName> 9954502 - Disclosure - Pension and Other Post-Retirement Benefit Plans - Obligations and Funded Status (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/PensionandOtherPostRetirementBenefitPlansObligationsandFundedStatusDetails </Role>
<ShortName> Pension and Other Post-Retirement Benefit Plans - Obligations and Funded Status (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 58 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R59.htm </HtmlFileName>
<LongName> 9954503 - Disclosure - Pension and Other Post-Retirement Benefit Plans - Unfunded Amounts Recognized on Consolidated Balance Sheets (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/PensionandOtherPostRetirementBenefitPlansUnfundedAmountsRecognizedonConsolidatedBalanceSheetsDetails </Role>
<ShortName> Pension and Other Post-Retirement Benefit Plans - Unfunded Amounts Recognized on Consolidated Balance Sheets (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 59 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R60.htm </HtmlFileName>
<LongName> 9954504 - Disclosure - Related Parties and Related Commitments and Contingencies - Additional Information (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/RelatedPartiesandRelatedCommitmentsandContingenciesAdditionalInformationDetails </Role>
<ShortName> Related Parties and Related Commitments and Contingencies - Additional Information (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 60 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R61.htm </HtmlFileName>
<LongName> 9954505 - Disclosure - Related Parties and Related Commitments and Contingencies - Equity Investments (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/RelatedPartiesandRelatedCommitmentsandContingenciesEquityInvestmentsDetails </Role>
<ShortName> Related Parties and Related Commitments and Contingencies - Equity Investments (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 61 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R62.htm </HtmlFileName>
<LongName> 9954506 - Disclosure - Related Parties and Related Commitments and Contingencies - Maximum Loss Exposure (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/RelatedPartiesandRelatedCommitmentsandContingenciesMaximumLossExposureDetails </Role>
<ShortName> Related Parties and Related Commitments and Contingencies - Maximum Loss Exposure (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 62 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R63.htm </HtmlFileName>
<LongName> 9954507 - Disclosure - Related Parties and Related Commitments and Contingencies - JV Lease Guarantees (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/RelatedPartiesandRelatedCommitmentsandContingenciesJVLeaseGuaranteesDetails </Role>
<ShortName> Related Parties and Related Commitments and Contingencies - JV Lease Guarantees (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 63 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R64.htm </HtmlFileName>
<LongName> 9954508 - Disclosure - Related Parties and Related Commitments and Contingencies - Joint Venture Lease Amounts (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/RelatedPartiesandRelatedCommitmentsandContingenciesJointVentureLeaseAmountsDetails </Role>
<ShortName> Related Parties and Related Commitments and Contingencies - Joint Venture Lease Amounts (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 64 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R65.htm </HtmlFileName>
<LongName> 9954509 - Disclosure - Leases and Other Commitments - Supplemental Balance Sheet (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/LeasesandOtherCommitmentsSupplementalBalanceSheetDetails </Role>
<ShortName> Leases and Other Commitments - Supplemental Balance Sheet (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 65 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R66.htm </HtmlFileName>
<LongName> 9954510 - Disclosure - Leases and Other Commitments - Supplemental Cash Flow (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/LeasesandOtherCommitmentsSupplementalCashFlowDetails </Role>
<ShortName> Leases and Other Commitments - Supplemental Cash Flow (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 66 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R67.htm </HtmlFileName>
<LongName> 9954511 - Disclosure - Leases and Other Commitments - Sale Leaseback (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/LeasesandOtherCommitmentsSaleLeasebackDetails </Role>
<ShortName> Leases and Other Commitments - Sale Leaseback (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 67 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R68.htm </HtmlFileName>
<LongName> 9954512 - Disclosure - Leases and Other Commitments - Long-Term Commitments (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/LeasesandOtherCommitmentsLongTermCommitmentsDetails </Role>
<ShortName> Leases and Other Commitments - Long-Term Commitments (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 68 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R69.htm </HtmlFileName>
<LongName> 9954513 - Disclosure - Shareholders' Equity and Convertible Preferred Stock - Stock-Based Compensation Expense (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/ShareholdersEquityandConvertiblePreferredStockStockBasedCompensationExpenseDetails </Role>
<ShortName> Shareholders' Equity and Convertible Preferred Stock - Stock-Based Compensation Expense (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 69 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R70.htm </HtmlFileName>
<LongName> 9954514 - Disclosure - Shareholders' Equity and Convertible Preferred Stock - Unrecognized Share-based Compensation (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/ShareholdersEquityandConvertiblePreferredStockUnrecognizedSharebasedCompensationDetails </Role>
<ShortName> Shareholders' Equity and Convertible Preferred Stock - Unrecognized Share-based Compensation (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 70 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R71.htm </HtmlFileName>
<LongName> 9954515 - Disclosure - Shareholders' Equity and Convertible Preferred Stock - Stock Option Activity (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/ShareholdersEquityandConvertiblePreferredStockStockOptionActivityDetails </Role>
<ShortName> Shareholders' Equity and Convertible Preferred Stock - Stock Option Activity (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 71 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R72.htm </HtmlFileName>
<LongName> 9954516 - Disclosure - Shareholders' Equity and Convertible Preferred Stock - Restricted Stock Units And Performance Share Units (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/ShareholdersEquityandConvertiblePreferredStockRestrictedStockUnitsAndPerformanceShareUnitsDetails </Role>
<ShortName> Shareholders' Equity and Convertible Preferred Stock - Restricted Stock Units And Performance Share Units (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 72 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R73.htm </HtmlFileName>
<LongName> 9954517 - Disclosure - Shareholders' Equity and Convertible Preferred Stock - Convertible Preferred Stock (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/ShareholdersEquityandConvertiblePreferredStockConvertiblePreferredStockDetails </Role>
<ShortName> Shareholders' Equity and Convertible Preferred Stock - Convertible Preferred Stock (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 73 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R74.htm </HtmlFileName>
<LongName> 9954518 - Disclosure - Income Tax Expense - Tax Expense and Effective Tax Rate (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/IncomeTaxExpenseTaxExpenseandEffectiveTaxRateDetails </Role>
<ShortName> Income Tax Expense - Tax Expense and Effective Tax Rate (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 74 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R75.htm </HtmlFileName>
<LongName> 9954519 - Disclosure - Income Tax Expense - Additional Information (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/IncomeTaxExpenseAdditionalInformationDetails </Role>
<ShortName> Income Tax Expense - Additional Information (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 75 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R76.htm </HtmlFileName>
<LongName> 9954520 - Disclosure - Income Tax Expense - Unrecognized Tax Benefits (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/IncomeTaxExpenseUnrecognizedTaxBenefitsDetails </Role>
<ShortName> Income Tax Expense - Unrecognized Tax Benefits (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 76 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R77.htm </HtmlFileName>
<LongName> 9954521 - Disclosure - Net Loss Per Common Share - Earnings Per Share, Basic and Diluted (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/NetLossPerCommonShareEarningsPerShareBasicandDilutedDetails </Role>
<ShortName> Net Loss Per Common Share - Earnings Per Share, Basic and Diluted (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 77 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R78.htm </HtmlFileName>
<LongName> 9954522 - Disclosure - Employee Termination, Asset Impairment, and Other - Expense Recognition (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/EmployeeTerminationAssetImpairmentandOtherExpenseRecognitionDetails </Role>
<ShortName> Employee Termination, Asset Impairment, and Other - Expense Recognition (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 78 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R79.htm </HtmlFileName>
<LongName> 9954523 - Disclosure - Employee Termination, Asset Impairment, and Other - Business Realignment Activities (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/EmployeeTerminationAssetImpairmentandOtherBusinessRealignmentActivitiesDetails </Role>
<ShortName> Employee Termination, Asset Impairment, and Other - Business Realignment Activities (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 79 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R80.htm </HtmlFileName>
<LongName> 9954524 - Disclosure - Supplier Finance Program (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/SupplierFinanceProgramDetails </Role>
<ShortName> Supplier Finance Program (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<ParentRole> http://www.wdc.com/role/SupplierFinanceProgram </ParentRole>
<Position> 80 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R81.htm </HtmlFileName>
<LongName> 9954525 - Disclosure - Revision of Previously Issued Financial Statements - Condensed Consolidated Statement of Operations (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/RevisionofPreviouslyIssuedFinancialStatementsCondensedConsolidatedStatementofOperationsDetails </Role>
<ShortName> Revision of Previously Issued Financial Statements - Condensed Consolidated Statement of Operations (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 81 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R82.htm </HtmlFileName>
<LongName> 9954526 - Disclosure - Revision of Previously Issued Financial Statements - Condensed Consolidated Statement of Comprehensive Loss (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/RevisionofPreviouslyIssuedFinancialStatementsCondensedConsolidatedStatementofComprehensiveLossDetails </Role>
<ShortName> Revision of Previously Issued Financial Statements - Condensed Consolidated Statement of Comprehensive Loss (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 82 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R83.htm </HtmlFileName>
<LongName> 9954527 - Disclosure - Revision of Previously Issued Financial Statements - Condensed Consolidated Statement of Cash Flows (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/RevisionofPreviouslyIssuedFinancialStatementsCondensedConsolidatedStatementofCashFlowsDetails </Role>
<ShortName> Revision of Previously Issued Financial Statements - Condensed Consolidated Statement of Cash Flows (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 83 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R84.htm </HtmlFileName>
<LongName> 9954528 - Disclosure - Revision of Previously Issued Financial Statements - Condensed Consolidated Statement of Shareholders??? Equity (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/RevisionofPreviouslyIssuedFinancialStatementsCondensedConsolidatedStatementofShareholdersEquityDetails </Role>
<ShortName> Revision of Previously Issued Financial Statements - Condensed Consolidated Statement of Shareholders??? Equity (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 84 </Position>
</Report>
<Report instance="wdc-20231229.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R85.htm </HtmlFileName>
<LongName> 9954529 - Disclosure - Revision of Previously Issued Financial Statements - Condensed Consolidated Balance Sheet (Details) </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.wdc.com/role/RevisionofPreviouslyIssuedFinancialStatementsCondensedConsolidatedBalanceSheetDetails </Role>
<ShortName> Revision of Previously Issued Financial Statements - Condensed Consolidated Balance Sheet (Details) </ShortName>
<MenuCategory> Details </MenuCategory>
<Position> 85 </Position>
</Report>
<Report>
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<LongName> All Reports </LongName>
<ReportType> Book </ReportType>
<ShortName> All Reports </ShortName>
</Report>
</MyReports>
<InputFiles>
<File doctype="10-Q" isDefinitelyFs="true" isUsgaap="true" original="wdc-20231229.htm"> wdc-20231229.htm </File>
<File> wdc-20231229.xsd </File>
<File> wdc-20231229_cal.xml </File>
<File> wdc-20231229_def.xml </File>
<File> wdc-20231229_lab.xml </File>
<File> wdc-20231229_pre.xml </File>
</InputFiles>
<SupplementalFiles>
<File> wdc-20231229_g1.gif </File>
</SupplementalFiles>
<BaseTaxonomies>
<BaseTaxonomy items="1"> http://fasb.org/srt/2023 </BaseTaxonomy>
<BaseTaxonomy items="1085"> http://fasb.org/us-gaap/2023 </BaseTaxonomy>
<BaseTaxonomy items="29"> http://xbrl.sec.gov/dei/2023 </BaseTaxonomy>
<BaseTaxonomy items="24"> http://xbrl.sec.gov/ecd/2023 </BaseTaxonomy>
</BaseTaxonomies>
<HasPresentationLinkbase> true </HasPresentationLinkbase>
<HasCalculationLinkbase> true </HasCalculationLinkbase>
</FilingSummary>

6 Previous Filings that this Filing References

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

11/17/23  Western Digital Corp.             8-K:5,9    11/15/23   11:333K                                   Donnelley … Solutions/FA
11/03/23  Western Digital Corp.             8-K:1,2,3,911/03/23   12:1.2M                                   Donnelley … Solutions/FA
10/10/23  Western Digital Corp.             8-K:1,9    10/10/23   11:168K                                   Donnelley … Solutions/FA
 2/01/23  Western Digital Corp.             8-K:1,3,5,7 1/31/23   16:1.6M                                   Donnelley … Solutions/FA
 2/12/21  Western Digital Corp.             8-K:5,9     2/10/21   11:340K                                   Donnelley … Solutions/FA
 2/08/06  Western Digital Corp.             10-Q       12/30/05   13:707K                                   Bowne Boc/FA
↑Top
Filing Submission 0000106040-24-000014   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)
Copyright © 2024 Fran Finnegan & Company LLC – All Rights Reserved.
About — Privacy — Redactions — Help — Mon., May 13, 5:36:34.2am ET