Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Current: | |||
| Federal | $ 53 | $ 41 | $ 46 |
| State | 12 | 7 | 1 |
| Total Current | 65 | 48 | 47 |
| Deferred: | |||
| Federal | (2) | (3) | 12 |
| State | (5) | 4 | 3 |
| Revaluation due to state legislative changes | 0 | 0 | (40) |
| Total Deferred | (7) | 1 | (25) |
| Total | $ 58 | $ 49 | $ 22 |