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CONDENSED COMBINED STATEMENTS OF CHANGES IN PARENT COMPANY NET INVESTMENT - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 27, 2024 | Sep. 27, 2024 | Dec. 29, 2023 | Sep. 29, 2023 | Dec. 27, 2024 | Dec. 29, 2023 | Jun. 28, 2024 | Jun. 30, 2023 | Jul. 01, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Beginning balance | $ 12,126 | $ 11,082 | $ 10,925 | $ 11,439 | $ 11,082 | $ 11,439 | $ 11,439 |  |
Net Income (Loss) | 104 | 211 | (301) | (518) | 315 | (819) |  |  |
Foreign currency translation adjustment | (78) | 43 | 24 | (16) | (35) | 8 |  |  |
Net unrealized gain (loss) on derivative contracts | (107) | 166 | 59 | (39) |  |  |  |  |
Stock-based compensation | 48 | 41 | 37 | 40 |  |  |  |  |
Net transfer from Parent | (92) | 583 | 152 | 19 |  |  | 275 | $ 376 | $ (922)
Ending balance | 12,001 | 12,126 | 10,896 | 10,925 | 12,001 | 10,896 | 11,082 | 11,439 |
The Flash Business of Western Digital Corporation [Member] |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Beginning balance |  | 11,082 |  | 11,439 | 11,082 | 11,439 | 11,439 | 12,977 | 12,981
Net Income (Loss) |  |  |  |  |  |  | (672) | (2,143) | 1,064
Foreign currency translation adjustment |  |  |  |  |  |  | (43) | (35) | (107)
Net unrealized gain (loss) on derivative contracts |  |  |  |  |  |  | (66) | 99 | (210)
Stock-based compensation |  |  |  |  |  |  | 149 | 165 | 171
Net transfer from Parent |  |  |  |  |  |  | 275 | 376 | (922)
Ending balance |  |  |  |  |  |  | 11,082 | 11,439 | 12,977
Parent Company Net Investment |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Beginning balance | 12,369 | 11,534 | 11,323 | 11,782 | 11,534 | 11,782 | 11,782 |  |
Net Income (Loss) | 104 | 211 | (301) | (518) |  |  |  |  |
Foreign currency translation adjustment | 0 | 0 | 0 | 0 |  |  |  |  |
Net unrealized gain (loss) on derivative contracts | 0 | 0 | 0 | 0 |  |  |  |  |
Stock-based compensation | 48 | 41 | 37 | 40 |  |  |  |  |
Net transfer from Parent | (86) | 583 | 152 | 19 |  |  |  |  |
Ending balance | 12,435 | 12,369 | 11,211 | 11,323 | 12,435 | 11,211 | 11,534 | 11,782 |
Parent Company Net Investment | The Flash Business of Western Digital Corporation [Member] |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Beginning balance |  | 11,534 |  | 11,782 | 11,534 | 11,782 | 11,782 | 13,384 | 13,071
Net Income (Loss) |  |  |  |  |  |  | (672) | (2,143) | 1,064
Foreign currency translation adjustment |  |  |  |  |  |  | 0 | 0 | 0
Net unrealized gain (loss) on derivative contracts |  |  |  |  |  |  | 0 | 0 | 0
Stock-based compensation |  |  |  |  |  |  | 149 | 165 | 171
Net transfer from Parent |  |  |  |  |  |  | 275 | 376 | (922)
Ending balance |  |  |  |  |  |  | 11,534 | 11,782 | 13,384
Total Accumulated Comprehensive Loss |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Beginning balance | (243) | 452 | (398) | (343) | 452 | (343) | (343) |  |
Net Income (Loss) | 0 | 0 | 0 | 0 |  |  |  |  |
Foreign currency translation adjustment | (78) | 43 | 24 | (16) |  |  |  |  |
Net unrealized gain (loss) on derivative contracts | (107) | 166 | 59 | (39) |  |  |  |  |
Stock-based compensation | 0 | 0 | 0 | 0 |  |  |  |  |
Net transfer from Parent | (6) | 0 | 0 | 0 | (6) |  |  |  |
Ending balance | $ (434) | (243) | $ (315) | (398) | (434) | (315) | 452 | (343) |
Total Accumulated Comprehensive Loss | The Flash Business of Western Digital Corporation [Member] |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Beginning balance |  | $ (452) |  | $ (343) | $ (452) | $ (343) | (343) | (407) | (90)
Net Income (Loss) |  |  |  |  |  |  | 0 | 0 | 0
Foreign currency translation adjustment |  |  |  |  |  |  | (43) | (35) | (107)
Net unrealized gain (loss) on derivative contracts |  |  |  |  |  |  | (66) | 99 | (210)
Stock-based compensation |  |  |  |  |  |  | 0 | 0 | 0
Net transfer from Parent |  |  |  |  |  |  | 0 | 0 | 0
Ending balance |  |  |  |  |  |  | $ (452) | $ (343) | $ (407)

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