Derivatives and Risk Management - Offsetting Assets and Liabilities (Details) - USD ($) $ in Millions |
Sep. 30, 2020 |
Dec. 31, 2019 |
|---|---|---|
| Derivative | ||
| Total derivative contracts, net | $ 20 | $ 68 |
| Prepaid Expenses and Other | ||
| Derivative | ||
| Net derivative contracts, assets | 2 | 24 |
| Other Noncurrent Assets | ||
| Derivative | ||
| Net derivative contracts, assets | 23 | 53 |
| Other Accrued Liabilities | ||
| Derivative | ||
| Net derivative contracts, liabilities | (3) | (5) |
| Other Noncurrent Liabilities | ||
| Derivative | ||
| Net derivative contracts, liabilities | $ (2) | $ (4) |