INCOME TAXES - Income Tax Expense (Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income tax expense	$ 422	$ 582	$ 658
Tax effect of changes in OCI	289	(1,319)	(199)
Total comprehensive income tax expense (benefit)	$ 711	$ (737)	$ 459