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Income Taxes Components of Income Tax (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Current expense (benefit): |  |  |
Federal | $ 11 | $ (315) | $ 251
State | (34) | (54) | 78
Total | (23) | (369) | 329
Deferred expense (benefit): |  |  |
Federal | (237) | 253 | (29)
State | 12 | (32) | 25
Total | (225) | 221 | (4)
Total income tax expense (benefit) from continuing operations | $ (248) | $ (148) | $ 325

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