Leases - Lease Maturity (Details) $ in Millions	Dec. 31, 2019 USD ($)
Operating Leases
2020	$ 100
2021	60
2022	41
2023	26
2024	15
2025 and Thereafter	37
Total Lease Liabilities, Undiscounted	279
Less: Imputed Interest	27
Total Lease Liabilities	252
Finance Leases
2020	52
2021	38
2022	27
2023	23
2024	21
2025 and Thereafter	86
Total Lease Liabilities, Undiscounted	247
Less: Imputed Interest	42
Total Lease Liabilities	205
Total
2020	152
2021	98
2022	68
2023	49
2024	36
2025 and Thereafter	123
Total Lease Liabilities, Undiscounted	526
Less: Imputed Interest	69
Total Lease Liabilities	457
Operating lease, liability, current	88
Finance lease, liability, current	$ 42