INCOME TAXES - Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current tax expense (benefit)
Federal	$ (3)	$ 52	$ 3
State	12	12	9
Total current tax expense	9	64	12
Deferred tax expense
Federal	739	423	433
State	90	41	39
Total deferred tax expense	829	464	472
Income taxes	$ 838	$ 528	$ 484