v3.26.1
Related Parties and Related Commitments and Contingencies - Schedule of Net Transfer From (to) Parent (Details) - USD ($)
$ in Millions
 12 Months Ended
Jul. 03, 2026
Jun. 27, 2025
Jun. 28, 2024
Related Party Transaction [Line Items]      
Net transfers from (to) Western Digital Corporation per Consolidated Statements of Shareholders’ Equity   $ (612) $ 275
Notes due to Western Digital Corporation $ 0 1,223 (113)
Contribution of equity interest in Unis Venture from Western Digital Corporation 0 61 0
Property, plant and equipment from Western Digital Corporation 0 27 11
Tax balances from (to) Western Digital Corporation 0 8 (17)
Tax indemnification liability transferred to Western Digital Corporation 0 112 0
Related Party      
Related Party Transaction [Line Items]      
Net transfers from (to) Western Digital Corporation per Consolidated Statements of Shareholders’ Equity 0 (585) 275
Notes due to Western Digital Corporation 0 (1,223)  
Notes due to Western Digital Corporation     113
Other assets and liabilities, net transferred from Western Digital Corporation 0 (105) 0
Contribution of equity interest in Unis Venture from Western Digital Corporation 0 (61) 0
Property, plant and equipment from Western Digital Corporation 0 (27) (11)
Tax balances from (to) Western Digital Corporation 0 (8) 17
Accumulated other comprehensive loss transferred from Western Digital Corporation 0 10 0
Tax indemnification liability transferred to Western Digital Corporation 0 112 0
Net transfers to Western Digital Corporation per Consolidated Statements of Cash Flows $ 0 $ (1,887) $ 394