Schedule II (Condensed Statements Of Operations) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Condensed Income Statements, Captions [Line Items]
Net gains (losses) on financial instruments at fair value and foreign exchange	$ 45	$ 40	$ (80)
Net gains (losses) on extinguishment of debt	4	30
Investment losses related to other-than-temporary impairments:
Total revenues	154	189	282
Interest	179	163	178
Provision (benefit) for income taxes	1	0	0
Net income (loss)	(195)	(445)	(578)
Parent Company [Member]
Condensed Income Statements, Captions [Line Items]
Net investment income	20	26	28
Net realized investment gains (losses)	(10)	3	11
Net gains (losses) on financial instruments at fair value and foreign exchange	110	49	(78)
Net gains (losses) on extinguishment of debt	5	30	0
Investment losses related to other-than-temporary impairments:
Other net realized gains (losses)	0	(6)	0
Total revenues	125	102	(39)
Operating	11	10	10
Interest	76	75	83
Total expenses	87	85	93
Gain (loss) before income taxes and equity in earnings of subsidiaries	38	17	(132)
Provision (benefit) for income taxes	(3)	(3)	(4)
Gain (loss) before equity in earnings of subsidiaries	41	20	(128)
Equity in net income (loss) of subsidiaries	(236)	(465)	(450)
Net income (loss)	$ (195)	$ (445)	$ (578)