Leases Leases (Schedule of future minimum lease commitments) (Details) $ in Millions	Jan. 03, 2020 USD ($)
Finance lease commitments
2020	$ 5
2021	1
2022	0
2023	0
2024	0
2025 and thereafter	1
Total undiscounted cash flows	7
Less: imputed interest	0
Lease liability as of January 3, 2020	7
Operating lease commitments
2020	145
2021	91
2022	74
2023	54
2024	39
2025 and thereafter	113
Total undiscounted cash flows	516
Less: imputed interest	(58)
Lease liability as of January 3, 2020	$ 458