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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	$ 172,369		$ 167,384
Allowance for Credit Loss for Debt Securities	(158)	$ (195)	(194)	$ (103)	$ (86)	$ (112)
Gross Unrealized Gains	1,995		2,939
Gross Unrealized Losses	11,590		10,797
Estimated Fair Value of Fixed Maturity Securities AFS	162,616		159,332
U.S. corporate
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	54,723		52,552
Allowance for Credit Loss for Debt Securities	(93)	(121)	(125)	(49)	(26)	(45)
Gross Unrealized Gains	739		1,050
Gross Unrealized Losses	3,181		2,875
Estimated Fair Value of Fixed Maturity Securities AFS	52,188		50,602
RMBS
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	29,485		28,129
Allowance for Credit Loss for Debt Securities	(1)	(1)	(1)	(2)	(2)	(1)
Gross Unrealized Gains	319		476
Gross Unrealized Losses	1,386		1,365
Estimated Fair Value of Fixed Maturity Securities AFS	28,417		27,239
U.S. government and agency
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	26,267		29,811
Allowance for Credit Loss for Debt Securities	0		0
Gross Unrealized Gains	81		188
Gross Unrealized Losses	3,508		3,298
Estimated Fair Value of Fixed Maturity Securities AFS	22,840		26,701
Foreign corporate
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	28,817		27,934
Allowance for Credit Loss for Debt Securities	(12)	(16)	(7)	0	(5)	(15)
Gross Unrealized Gains	484		742
Gross Unrealized Losses	2,385		2,198
Estimated Fair Value of Fixed Maturity Securities AFS	26,904		26,471
ABS & CLO
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	18,131		14,610
Allowance for Credit Loss for Debt Securities	0	(5)	(5)	(4)	(5)	(7)
Gross Unrealized Gains	105		137
Gross Unrealized Losses	238		191
Estimated Fair Value of Fixed Maturity Securities AFS	17,998		14,551
Municipals
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	5,748		5,947
Allowance for Credit Loss for Debt Securities	0		0
Gross Unrealized Gains	116		138
Gross Unrealized Losses	509		496
Estimated Fair Value of Fixed Maturity Securities AFS	5,355		5,589
CMBS
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	5,286		5,286
Allowance for Credit Loss for Debt Securities	(16)	(16)	(20)	(12)	(12)	(8)
Gross Unrealized Gains	29		57
Gross Unrealized Losses	199		210
Estimated Fair Value of Fixed Maturity Securities AFS	5,100		5,113
Foreign government
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,912		3,115
Allowance for Credit Loss for Debt Securities	(36)	$ (36)	(36)	$ (36)	$ (36)	$ (36)
Gross Unrealized Gains	122		151
Gross Unrealized Losses	184		164
Estimated Fair Value of Fixed Maturity Securities AFS	$ 3,814		$ 3,066