Schedule II. Condensed Financial Information of Registrant (Parent Company) (Schedule of Condensed Financial Information of Registrant, Statements of Operations and Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenues
Net investment income	$ 2,557	$ 2,497	$ 2,264
Total revenues	14,989	14,270	13,299
Expenses
Income tax benefit	(342)	(252)	(313)
Net income	1,278	959	1,205
Other comprehensive income	893	681	926
Total comprehensive income	2,171	1,640	2,131
Parent Company
Revenues
Net investment income	36	42	41
Total revenues	36	42	41
Expenses
Administrative and general	2	2	2
Interest	135	132	126
Total expenses	137	134	128
Loss from operations before income taxes and equity in net income of subsidiaries	(101)	(92)	(87)
Income tax benefit	3	7	4
Loss before equity in net income of subsidiaries	(98)	(85)	(83)
Equity in net income of subsidiaries	1,376	1,044	1,288
Net income	1,278	959	1,205
Total comprehensive income	$ 2,171	$ 1,640	$ 2,131