Investments (ACL for Fixed Maturity Securities AFS By Sector) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Allowance, beginning of period	$ 273	$ 137	$ 249	$ 160
ACL not previously recorded	0	16	56	24
Changes for securities with previously recorded ACL	(4)	2	21	12
Securities sold or exchanged	(45)	(4)	(102)	(45)
Allowance, end of period	224	151	224	151
U.S. corporate
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Allowance, beginning of period	134	40	138	59
ACL not previously recorded	0	16	0	16
Changes for securities with previously recorded ACL	0	6	22	13
Securities sold or exchanged	(26)	0	(52)	(26)
Allowance, end of period	108	62	108	62
Foreign corporate
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Allowance, beginning of period	52	6	7	18
ACL not previously recorded	0	0	52	0
Changes for securities with previously recorded ACL	(4)	(2)	(4)	(2)
Securities sold or exchanged	(13)	(4)	(20)	(16)
Allowance, end of period	35	0	35	0
Foreign government
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Allowance, beginning of period	57	57	57	57
ACL not previously recorded	0	0		0
Changes for securities with previously recorded ACL	0	0	0	0
Securities sold or exchanged	(1)	0	(1)	0
Allowance, end of period	56	57	56	57
RMBS
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Allowance, beginning of period	1	2	1	1
ACL not previously recorded	0	0		1
Changes for securities with previously recorded ACL	0	0		0
Securities sold or exchanged	0	0	0	0
Allowance, end of period	1	2	1	2
ABS & CLO
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Allowance, beginning of period	5	7	6	9
ACL not previously recorded	0	0		0
Changes for securities with previously recorded ACL	0	(2)	(1)	(1)
Securities sold or exchanged	(5)	0	(5)	(3)
Allowance, end of period	0	5	0	5
CMBS
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Allowance, beginning of period	24	25	40	16
ACL not previously recorded	0	0	4	7
Changes for securities with previously recorded ACL	0	0	4	2
Securities sold or exchanged	0	0	(24)	0
Allowance, end of period	$ 24	$ 25	$ 24	$ 25

Amount of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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