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Supplemental Financial Information - Cash and cash equivalents (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 29, 2024	Oct. 01, 2023	Dec. 31, 2023
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 2,748		$ 3,862
SSMC
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	236		$ 214
Dividends	$ 0	$ 0
SSMC \| TSMC
Cash and Cash Equivalents [Line Items]
Ownership percentage by noncontrolling owners	38.80%