Statements of Comprehensive Income (Loss) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
COMPREHENSIVE INCOME (LOSS)
Net income (loss)		$ (38)	$ (20)	$ (10)
Other comprehensive income (loss), net of income taxes:
Change in unrealized gains (losses), net of adjustments	[1]	(441)	(50)	88
Other comprehensive income (loss), net of income taxes		(441)	(50)	88
Comprehensive income (loss)		$ (479)	$ (70)	$ 78

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