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Investments (Fixed Maturity Securities Available-For-Sale by Sector) (Details) - USD ($) $ in Millions	Jun. 30, 2026	Mar. 31, 2026	Dec. 31, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 347,781		$ 337,201
Allowance for Credit Loss for Debt Securities	(224)	$ (273)	(249)	$ (151)	$ (137)	$ (160)
Gross Unrealized Gains	5,395		7,137
Gross Unrealized Losses	30,769		28,158
Estimated Fair Value of Fixed Maturity Securities AFS	322,183		315,931
U.S. corporate
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	97,070		92,855
Allowance for Credit Loss for Debt Securities	(108)	(134)	(138)	(62)	(40)	(59)
Gross Unrealized Gains	1,424		1,899
Gross Unrealized Losses	7,226		6,657
Estimated Fair Value of Fixed Maturity Securities AFS	91,160		87,959
Foreign corporate
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	64,575		62,606
Allowance for Credit Loss for Debt Securities	(35)	(52)	(7)	0	(6)	(18)
Gross Unrealized Gains	1,900		2,443
Gross Unrealized Losses	4,768		4,453
Estimated Fair Value of Fixed Maturity Securities AFS	61,672		60,589
RMBS
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	47,495		46,567
Allowance for Credit Loss for Debt Securities	(1)	(1)	(1)	(2)	(2)	(1)
Gross Unrealized Gains	531		822
Gross Unrealized Losses	2,046		1,970
Estimated Fair Value of Fixed Maturity Securities AFS	45,979		45,418
Foreign government
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	47,870		47,037
Allowance for Credit Loss for Debt Securities	(56)	(57)	(57)	(57)	(57)	(57)
Gross Unrealized Gains	886		1,068
Gross Unrealized Losses	8,476		7,300
Estimated Fair Value of Fixed Maturity Securities AFS	40,224		40,748
U.S. government and agency
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	40,682		42,877
Allowance for Credit Loss for Debt Securities	0		0
Gross Unrealized Gains	172		303
Gross Unrealized Losses	6,008		5,658
Estimated Fair Value of Fixed Maturity Securities AFS	34,846		37,522
ABS & CLO
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	27,939		23,028
Allowance for Credit Loss for Debt Securities	0	(5)	(6)	(5)	(7)	(9)
Gross Unrealized Gains	199		246
Gross Unrealized Losses	451		371
Estimated Fair Value of Fixed Maturity Securities AFS	27,687		22,897
Municipals
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	11,997		12,195
Allowance for Credit Loss for Debt Securities	0		0
Gross Unrealized Gains	198		225
Gross Unrealized Losses	1,378		1,356
Estimated Fair Value of Fixed Maturity Securities AFS	10,817		11,064
CMBS
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	10,153		10,036
Allowance for Credit Loss for Debt Securities	(24)	$ (24)	(40)	$ (25)	$ (25)	$ (16)
Gross Unrealized Gains	85		131
Gross Unrealized Losses	416		393
Estimated Fair Value of Fixed Maturity Securities AFS	$ 9,798		$ 9,734