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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%