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INCOME TAXES - Components of Income Tax Expense (Benefit) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Current      
U.S. federal $ 271 $ 376 $ 292
State and local 94 20 44
Total 365 396 336
Deferred      
U.S. federal 90 (142) 159
State and local 7 6 (6)
Total 97 (136) 153
U.S. federal 361 234 451
State and local 101 26 38
Income tax expense $ 462 $ 260 $ 489