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Income Taxes - Total income tax provision (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Current taxes: |  |  |
Federal | $ 250 | $ 196 | $ 153
State | 10 | 8 | 6
Foreign | 2 | 0 | 0
Deferred taxes: |  |  |
Federal | (23) | (82) | 5
Impact of change in U.S. corporate tax rate | 0 | 0 | 83
Total Federal deferred taxes | (23) | (82) | 88
Provision for income taxes as shown in the Statement of Earnings | $ 239 | $ 122 | $ 247

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