Debt - Future Maturities (Details) - USD ($) $ in Millions |
Dec. 31, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Long-term Debt, Fiscal Year Maturity | ||
| 2020 | $ 2,060 | |
| 2021 | 1,094 | |
| 2022 | 1,708 | |
| 2023 | 932 | |
| 2024 | 1,508 | |
| Thereafter | 2,689 | |
| Total | 9,991 | $ 9,308 |
| Amortization of Debt Premium and Debt Issuance Cost, net and other | ||
| 2020 | 13 | |
| 2021 | 15 | |
| 2022 | 16 | |
| 2023 | 11 | |
| 2024 | 10 | |
| Thereafter | 50 | |
| Total | 115 | 60 |
| Long-term debt | $ 10,106 | $ 9,368 |