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v3.25.1

Related Parties and Related Commitments and Contingencies - Additional Information (Details) - USD ($) | 1 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Feb. 28, 2022 | Dec. 27, 2024 | Dec. 29, 2023 | Jun. 28, 2024 | Jun. 30, 2023 | Jul. 01, 2022
Related Party Transaction [Line Items] |  |  |  |  |  |
Payments for building depreciation |  |  |  | $ 290,000,000 |  |
Property, Plant and Equipment, Net |  | $ 579,000,000 |  | 791,000,000 |  |
The Flash Business of Western Digital Corporation [Member] |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Costs incurred associated with reduction in utilization | $ 207,000,000 |  |  | 36,000,000 |  |
Property, Plant and Equipment, Net |  |  |  | 791,000,000 | $ 933,000,000 |
Flash Ventures | The Flash Business of Western Digital Corporation [Member] |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Property, Plant and Equipment, Net |  |  |  | $ 162,000,000 |  |
Ownership percentage |  |  |  | 49.90% |  |
Kioxia [Member] | The Flash Business of Western Digital Corporation [Member] |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Ownership percentage |  |  |  | 50.10% |  |
Related Party |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Accounts payable |  | $ 369,000,000 |  | $ 313,000,000 |  |
Investment funding commitments, percentage |  | 50.00% |  |  |  |
Manufacturing capacity percent operating |  | 100.00% |  |  |  |
Costs incurred associated with reduction in utilization |  | $ 0 | $ 249,000,000 |  |  |
Related Party | The Flash Business of Western Digital Corporation [Member] |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Accounts payable |  |  |  | $ 313,000,000 | 292,000,000 |
Investment funding commitments, percentage |  |  |  | 50.00% |  |
Manufacturing capacity percent operating |  |  |  | 100.00% |  |
Costs incurred associated with reduction in utilization |  |  |  | $ 249,000,000 | 286,000,000 |
Related Party | Flash Ventures |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Payments for equity method investments |  | 2,000,000,000 | $ 1,800,000,000 |  |  |
Accounts payable |  | 252,000,000 |  | 313,000,000 |  |
Related Party | Flash Ventures | The Flash Business of Western Digital Corporation [Member] |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Payments for equity method investments |  |  |  | 3,350,000,000 | 4,200,000,000 | $ 4,700,000,000
Accounts payable |  |  |  | 313,000,000 | $ 292,000,000 |
Related Party | K1, K2, And Y7 Facilities | Future Building Depreciation Payments |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Other commitment |  | 944,000,000 |  |  |  |
Related Party | K1, K2, And Y7 Facilities | Future Building Depreciation Payments | The Flash Business of Western Digital Corporation [Member] |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Other commitment |  |  |  | 74,000,000 |  |
Related Party | K1, K2, And Y7 Facilities | Future Building Depreciation Payments | Other current assets |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Other commitment |  | 124,000,000 |  |  |  |
Related Party | K1, K2, And Y7 Facilities | Future Building Depreciation Payments | Other noncurrent assets |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Other commitment |  | $ 840,000,000 |  |  |  |
Related Party | K1, K2, And Y7 Facilities | Future Building Depreciation Payments | Other noncurrent assets | The Flash Business of Western Digital Corporation [Member] |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Other commitment |  |  |  | 523,000,000 |  |
Related Party | Flash Ventures | Future Building Depreciation Payments |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Other Commitment, Exchange Rate |  | 157.86 |  |  |  |
Other commitment |  | $ 303,000,000 |  |  |  |
To be paid remainder of fiscal year |  | 60,000,000 |  |  |  |
To be paid year one |  | 30,000,000 |  |  |  |
To be paid year two |  | 111,000,000 |  |  |  |
To be paid year three |  | 89,000,000 |  |  |  |
To be paid year four |  | 13,000,000 |  |  |  |
Payments for building depreciation |  | $ 107,000,000 |  |  |  |
Related Party | Flash Ventures | Future Building Depreciation Payments | The Flash Business of Western Digital Corporation [Member] |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Other commitment |  |  |  | 610,000,000 |  |
To be paid remainder of fiscal year |  |  |  | 372,000,000 |  |
To be paid year one |  |  |  | 29,000,000 |  |
To be paid year two |  |  |  | 109,000,000 |  |
To be paid year three |  |  |  | 87,000,000 |  |
To be paid year four |  |  |  | $ 13,000,000 |  |
Related Party | Western Digital Corp | Minimum |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Investment funding commitments, percentage |  | 49.90% |  |  |  |
Related Party | Western Digital Corp | Minimum | The Flash Business of Western Digital Corporation [Member] |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Investment funding commitments, percentage |  |  |  | 49.90% |  |
Related Party | Western Digital Corp | Maximum |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Investment funding commitments, percentage |  | 50.00% |  |  |  |
Related Party | Western Digital Corp | Maximum | The Flash Business of Western Digital Corporation [Member] |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Investment funding commitments, percentage |  |  |  | 50.00% |  |

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