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INCOME TAXES - COMPONENTS OF TAX EXPENSE (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Current tax expense (benefit): |  |  |
Federal | $ 392 | $ 397 | $ 229
State | 48 | 30 | 27
Total current | 440 | 427 | 256
Deferred tax expense: |  |  |
Federal | 77 | 60 | 103
State | 14 | (23) | 11
Total deferred | 91 | 37 | 114
Total tax expense related to income | $ 531 | $ 464 | $ 370

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