INCOME TAXES - Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current
U.S. federal	$ 323	$ 271	$ 376
State and local	73	94	20
Total	396	365	396
Deferred
U.S. federal	64	90	(142)
State and local	0	7	6
Total	64	97	(136)
U.S. federal	387	361	234
State and local	73	101	26
Income tax expense	$ 460	$ 462	$ 260