v3.10.0.1
INCOME TAXES (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2018
Dec. 31, 2017
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Income Tax Disclosure [Abstract]          
Income tax (expense) benefit $ (2)   $ 55 $ (21) $ 27
Income tax benefit for favorable resolution of income tax matters         32
Discrete tax benefits         $ 17
Tax Act - provisional income tax expense   $ 60