INVESTMENTS - Trading Securities (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Investments, Debt and Equity Securities [Abstract]
Net investment gains (losses) recognized during the period on securities held at the end of the period	$ (29)	$ (168)	$ (45)	$ (217)
Net investment gains (losses) recognized on securities sold during the period	(1)	153	(1)	175
Unrealized and realized gains (losses) on trading securities	(30)	(15)	(46)	(42)
Interest and dividend income from trading securities	3	40	5	76
Net investment income (loss) from trading securities	$ (27)	$ 25	$ (41)	$ 34