Organization and Basis of Presentation (Details) $ in Billions	Feb. 18, 2026 shares	Jun. 09, 2025 shares	Feb. 21, 2025 USD ($) shares	Mar. 19, 2026 shares	Feb. 22, 2025 shares
Western Digital Corporation
Noncontrolling Interest [Line Items]
Dividends paid | $			$ 1.5
Revolving Credit Facility | Line of Credit
Noncontrolling Interest [Line Items]
Maximum borrowing capacity | $			1.5
Term B Loan | Line of Credit
Noncontrolling Interest [Line Items]
Maximum borrowing capacity | $			$ 2.0
Western Digital Corporation
Noncontrolling Interest [Line Items]
Distribution of shares (in shares) | shares			116,035,464
Percent distribution of shares			80.10%
Right to receive per share ratio			0.33
Western Digital Corporation | Sandisk Corporation
Noncontrolling Interest [Line Items]
Number of shares sold (in shares) | shares	5,821,135	21,314,768
Percentage disposed		14.60%
Western Digital Corporation | Sandisk Corporation
Noncontrolling Interest [Line Items]
Investment (in shares) | shares				1,691,884	28,827,787
Ownership percentage					19.90%