Allowance for Doubtful Accounts (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 03, 2021	Mar. 28, 2020	Jan. 02, 2021
Schedule Of Financial Receivables [Line Items]
(Benefit) provision for doubtful accounts	$ (12)	$ 180
Allowances for vendor receivables	7		$ 5
SEC Schedule, 12-09, Allowance, Credit Loss
Schedule Of Financial Receivables [Line Items]
Allowance for doubtful accounts	67
(Benefit) provision for doubtful accounts	(12)
Customer accounts written off—net of recoveries	(4)
Allowance for doubtful accounts	$ 51