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