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Related Parties and Related Commitments and Contingencies - Additional Information (Details) $ in Millions	3 Months Ended		6 Months Ended
	Oct. 01, 2021 USD ($) entity	Oct. 02, 2020 USD ($)	Jan. 01, 2021	Jul. 02, 2021 USD ($)
Guarantor Obligations [Line Items]
Number of legal entities \| entity	3
Accounts payable to related parties	$ 378			$ 398
Investment funding commitments	50.00%
Insurance recovery recorded in Cost of revenue		$ 30
Western Digital Corp \| Minimum
Guarantor Obligations [Line Items]
Investment funding commitments	49.90%
Western Digital Corp \| Maximum
Guarantor Obligations [Line Items]
Investment funding commitments	50.00%
Flash Ventures
Guarantor Obligations [Line Items]
Investments in Flash Ventures	$ 1,190	$ 981
Accounts payable to related parties	$ 378			$ 398
Unis Venture
Guarantor Obligations [Line Items]
Equity method investment, ownership percentage	49.00%
Unissoft (Wuxi) Group Co Ltd. \| Unis Venture
Guarantor Obligations [Line Items]
Partner's ownership in venture business	51.00%
Revenue from Contract with Customer \| Unis Venture \| Product Concentration Risk
Guarantor Obligations [Line Items]
Concentration risk, percentage	5.00%	2.00%
Accounts Receivable Benchmark \| Product Concentration Risk \| Unis Venture
Guarantor Obligations [Line Items]
Concentration risk, percentage	7.00%		6.00%