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Related Parties and Related Commitments and Contingencies - Additional Information (Details) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 27, 2024 USD ($) entity ¥ / $	Sep. 29, 2023 USD ($)	Dec. 29, 2023	Jun. 28, 2024 USD ($)
Guarantor Obligations [Line Items]
Number of legal entities | entity	3
Investment funding commitments, percentage	50.00%
Manufacturing capacity percent operating	100.00%
Costs incurred associated with reduction in utilization	$ 0	$ 141
Unis Venture | Product Concentration Risk | Accounts Receivable Benchmark
Guarantor Obligations [Line Items]
Concentration risk, percentage	6.00%		7.00%
K1, K2, And Y7 Facilities | Future Building Depreciation Payments
Guarantor Obligations [Line Items]
Other commitment	$ 722
Flash Ventures | Future Building Depreciation Payments
Guarantor Obligations [Line Items]
Other commitment	$ 605
Foreign currency exchange rate | ¥ / $	142.56
To be paid remainder of fiscal year	$ 337
To be paid year one	33
To be paid year two	123
To be paid year three	98
To be paid year four	14
Payments for building depreciation	$ 315
Unis Venture
Guarantor Obligations [Line Items]
Equity method investment, ownership percentage	49.00%
Unis Venture | Product Concentration Risk | Revenue from Contract with Customer
Guarantor Obligations [Line Items]
Concentration risk, percentage	6.00%	2.00%
Unis Venture | Unissoft (Wuxi) Group Co Ltd.
Guarantor Obligations [Line Items]
Partner's ownership in venture business	51.00%
Western Digital Corp | Minimum
Guarantor Obligations [Line Items]
Investment funding commitments, percentage	49.90%
Western Digital Corp | Maximum
Guarantor Obligations [Line Items]
Investment funding commitments, percentage	50.00%
Related Party
Guarantor Obligations [Line Items]
Payments for equity method investments	$ 889	$ 939
Accounts payable	$ 352			$ 313

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