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Income Taxes (Components of Income Taxes) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Federal: |  |  |
Current | $ (8) | $ (7) | $ 7
Deferred | (17) | (4) | 186
State: |  |  |
Current | 0 | (1) | 2
Deferred | 2 | 0 | 5
Foreign: |  |  |
Current | 458 | 368 | 378
Deferred | $ (219) | $ (4) | $ 130

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