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Organization and Basis of Presentation (Policies)
 3 Months Ended
Sep. 27, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Basis of Presentation
Western Digital Corporation (“Western Digital” or the “Company”) is a leading developer, manufacturer, and provider of data storage devices and solutions based on both hard disk drive and NAND flash technologies.

The Company’s broad portfolio of technology and products addresses the following key end markets: Cloud, Client, and Consumer. The Company also generates immaterial license and royalty revenue from its extensive intellectual property portfolio, which is included in each of these three end market categories.

The accounting policies followed by the Company are set forth in Part II, Item 8, Note 1, Organization and Basis of Presentation, of the Notes to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10‑K for the year ended June 28, 2024. In the opinion of management, all adjustments necessary to fairly state the Condensed Consolidated Financial Statements have been made. Such adjustments consist of items of a normal, recurring nature. Certain information and footnote disclosures normally included in the Consolidated Financial Statements prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). These Condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and the notes thereto included in the Company’s Annual Report on Form 10‑K for the year ended June 28, 2024. The results of operations for interim periods are not necessarily indicative of results to be expected for the full year.
Fiscal Year
Fiscal Year

The Company’s fiscal year ends on the Friday nearest to June 30 and typically consists of 52 weeks. Approximately every five to six years, the Company reports a 53-week fiscal year to align the fiscal year with the foregoing policy. Fiscal year 2025, which will end on June 27, 2025, and fiscal year 2024, which ended on June 28, 2024, are each comprised of 52 weeks, with all quarters presented consisting of 13 weeks.
Segment Reporting
Segment Reporting

The Company manufactures, markets, and sells data storage devices and solutions in the United States (“U.S.”) and in foreign countries through its sales personnel, dealers, distributors, retailers, and subsidiaries. The Company manages and reports under two reportable segments: hard disk drives (“HDD”) and Flash-based products (“Flash”).

The Chief Executive Officer, who is the Company’s Chief Operating Decision Maker (“CODM”), evaluates the performance of the Company and makes decisions regarding the allocation of resources based on each operating segment’s net revenue and gross margin. Because of the integrated nature of the Company’s production and distribution activities, separate segment asset measures are either not available or not used as a basis for the CODM to evaluate the performance of or to allocate resources to the segments.
Business Separation Costs
Business Separation Costs

On October 30, 2023, the Company announced that its Board of Directors had completed its strategic review of the business and, after evaluating a comprehensive range of alternatives, authorized the Company to pursue a plan to separate its HDD and Flash business units to create two independent, public companies. As a result of the plan, the Company has incurred separation and transition costs and expects to incur such costs through the completion of the separation of the businesses. The separation and transition costs are recorded within Business separation costs in the Condensed Consolidated Statements of Operations.
Use of Estimates
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.
Accounting Pronouncements Recently Adopted and Recently Issued Accounting Pronouncements Not Yet Adopted
Accounting Pronouncements Recently Adopted

In September 2022, the Financial Accounting Standards Board (“FASB”) issued an accounting standards update (“ASU”) No. 2022-04, “Liabilities-Supplier Finance Programs (Subtopic 405-50): Disclosure of Supplier Finance Program Obligations”, which requires annual and interim disclosures for entities that use supplier finance programs in connection with the purchase of goods and services. As required by the ASU, the Company began to provide disclosure of outstanding obligations to such suppliers for all balance sheet dates presented beginning with the Company’s first quarter of 2024. The ASU also requires the Company to provide certain annual rollforward information related to those obligations, which will be required beginning with the Company’s financial statements for the year ending June 27, 2025. The Company will provide this disclosure in its Annual Report on Form 10-K for the year ended June 27, 2025. The ASU does not affect the recognition, measurement, or financial statement presentation of supplier finance program obligations. See Note 15, Supplier Finance Program, of the Notes to the Condensed Consolidated Financial Statements for information regarding the supplier finance program.

Recently Issued Accounting Pronouncements Not Yet Adopted

In November 2023, the FASB issued ASU No. 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures”, which expands on segment reporting requirements primarily through enhanced disclosures surrounding significant segment expenses. The ASU expands on existing segment reporting requirements to require that a public entity disclose, on an annual and interim basis, significant segment expenses that are regularly provided to an entity's CODM, a description of other segment items by reportable segment, and any additional measures of a segment's profit or loss used by the CODM when deciding how to allocate resources. These incremental disclosures will be required beginning with the Company’s financial statements for the year ending June 27, 2025. The Company expects to provide any required disclosures at that time.

In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures”. The ASU calls for enhanced income tax disclosure requirements surrounding the tabular rate reconciliation and income taxes paid. The Company is currently compiling the information required for these disclosures. These incremental disclosures will be required beginning with the Company’s financial statements for the year ending June 26, 2026, with early adoption permitted. The Company expects to provide any required disclosures at that time.
Fair Value Measurements and Investments
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.