REVISION OF PREVIOUSLY ISSUED FINANCIAL STATEMENTS - Comprehensive Income (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statements of Comprehensive Income (Loss):
Net income (loss)			$ (20)	$ (10)
Change in unrealized gains (losses), net of reclassification adjustment	[1]	$ (441)	(50)	88
Other comprehensive income (loss)		$ (441)	(50)	88
Comprehensive income (loss)			(70)	78
As Previously Reported
Statements of Comprehensive Income (Loss):
Net income (loss)			(13)	(9)
Change in unrealized gains (losses), net of reclassification adjustment			(52)	90
Other comprehensive income (loss)			(52)	90
Comprehensive income (loss)			(65)	81
Impact of Revisions
Statements of Comprehensive Income (Loss):
Net income (loss)			(7)	(1)
Change in unrealized gains (losses), net of reclassification adjustment			2	(2)
Other comprehensive income (loss)			2	(2)
Comprehensive income (loss)			$ (5)	$ (3)

[1] See Note 12 of the Notes to these Financial Statements for details of change in unrealized gains (losses), net of adjustments.