INCOME TAXES - Income Tax Expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Tax Disclosure [Abstract]
Current income taxes: Federal taxes	$ 36	$ 22	$ 67	$ 29
Current income taxes: State taxes	3	3	5	5
Total current income taxes	39	25	72	34
Deferred income taxes: Federal taxes	(3)	3	(1)	8
Deferred income taxes: State taxes	1	0	1	0
Total deferred income taxes	(2)	3	0	8
Income taxes	$ 37	$ 28	$ 72	$ 42
Statutory federal tax rate	21.00%	21.00%	21.00%	21.00%
Effective tax rate	20.50%	20.10%	20.00%	20.40%