Annual report pursuant to Section 13 and 15(d)

INCOME TAXES - Provision (Benefit) for Income Taxes (Details)

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INCOME TAXES - Provision (Benefit) for Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Income Tax Disclosure [Abstract]                      
Effective Income Tax Rate Reconciliation, Impact om TCJA, Amount                 $ (3) $ (123) $ 0
Current tax provision (benefit)                      
Federal                 152 41 40
State                 20 (1) 3
Total current tax provision                 172 40 43
Deferred tax provision (benefit)                      
Federal                 71 151 161
State                 (8) 17 4
Total deferred tax provision                 63 168 165
Provision for income taxes $ 57 $ 62 $ 57 $ 59 $ (20) $ 90 $ 79 $ 59 $ 235 $ 208 $ 208