Leases Other Information Related to Lease Agreements (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019
Cash Paid For Amounts Included In Measurement of Liabilities
Operating cash flows from operating leases	$ 56	$ 37
Operating cash flows from financing leases	12	12
Financing cash flows from financing leases	$ 102	$ 90
Weighted-average Remaining Lease Term [Abstract]
Operating leases	8 years 5 months 1 day	6 years 1 month 20 days
Financing leases	5 years 3 months 21 days	4 years 10 months 6 days
Weighted-average Discount Rate [Abstract]
Operating leases	6.60%	4.40%
Financing leases	3.20%	3.50%