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Related Parties and Related Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
May 31, 2019 | Oct. 04, 2019 | Sep. 28, 2018 | Jun. 28, 2019
Related Party Transactions [Abstract] |  |  |  |
Accounts payable to related parties |  | $ 507 |  | $ 331
Investment funding commitments |  | 50.00% |  |
Costs incurred associated with reduction in utilization |  | $ 68 |  |
Western Digital Corp | Minimum |  |  |  |
Related Party Transactions [Abstract] |  |  |  |
Investment funding commitments |  | 49.90% |  |
Western Digital Corp | Maximum |  |  |  |
Related Party Transactions [Abstract] |  |  |  |
Investment funding commitments |  | 50.00% |  |
Equity Method Investee |  |  |  |
Related Party Transactions [Abstract] |  |  |  |
Payments for equity method investments |  | $ 682 | $ 744 |
Accounts payable to related parties |  | $ 507 |  | $ 331
Unis Venture |  |  |  |
Related Party Transactions [Abstract] |  |  |  |
Equity method investment, ownership percentage |  | 49.00% |  |
Unissoft (Wuxi) Group Co Ltd. | Unis Venture |  |  |  |
Related Party Transactions [Abstract] |  |  |  |
Partner's ownership in venture business |  | 51.00% |  |
Equipment Investments, Relocation Costs and Start-up Costs | Flash Ventures |  |  |  |
Related Party Transactions [Abstract] |  |  |  |
Other commitment | $ 660 |  |  |
Prepayments of Future Depreciation | Flash Ventures |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |
Other Commitment, Period | 3 years |  |  |
Related Party Transactions [Abstract] |  |  |  |
Other commitment | $ 360 |  |  |
Product Concentration Risk | Revenue from Contract with Customer | Unis Venture |  |  |  |
Related Party Transactions [Abstract] |  |  |  |
Concentration risk, percentage |  | 1.00% | 1.00% |

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