Leases Leases (Schedule of ROU assets and lease liabilities) (Details) - USD ($) $ in Millions	Jan. 03, 2020	Dec. 29, 2018	Dec. 28, 2018
ROU assets:
Finance leases	$ 7
Operating leases	400	$ 418	$ 0
Non-current ROU assets	407
Current lease liabilities:
Finance leases	5
Operating leases	132
Current lease liabilities	137
Non-current lease liabilities:
Finance leases	2
Operating leases	326	$ 320	$ 0
Non-current lease liabilities	$ 328