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Investments (Fixed Maturity Securities Available-For-Sale by Sector) (Details) - USD ($) $ in Millions	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 302,457		$ 310,884
Allowance for Credit Loss for Debt Securities	(198)	$ (261)	(91)	$ (68)	$ (99)	$ (81)
Gross Unrealized Gains	5,488		31,901
Gross Unrealized Losses	36,982		2,420
Estimated Fair Value of Fixed Maturity Securities AFS	270,765		340,274
U.S. corporate
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	88,539		82,694
Allowance for Credit Loss for Debt Securities	(30)	(28)	(30)	(18)	(39)	(44)
Gross Unrealized Gains	1,121		10,651
Gross Unrealized Losses	10,806		281
Estimated Fair Value of Fixed Maturity Securities AFS	78,824		93,034
Foreign corporate
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	59,259		59,124
Allowance for Credit Loss for Debt Securities	(13)	(53)	(28)	(24)	(32)	(16)
Gross Unrealized Gains	1,010		5,275
Gross Unrealized Losses	10,329		731
Estimated Fair Value of Fixed Maturity Securities AFS	49,927		63,640
Foreign government
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	46,819		56,848
Allowance for Credit Loss for Debt Securities	(136)	(166)	(19)	(19)	(21)	(21)
Gross Unrealized Gains	1,918		5,603
Gross Unrealized Losses	4,551		823
Estimated Fair Value of Fixed Maturity Securities AFS	44,050		61,609
U.S. government and agency
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	34,572		41,068
Allowance for Credit Loss for Debt Securities	0		0
Gross Unrealized Gains	705		5,807
Gross Unrealized Losses	3,715		276
Estimated Fair Value of Fixed Maturity Securities AFS	31,562		46,599
RMBS
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	30,417		29,152
Allowance for Credit Loss for Debt Securities	0		0
Gross Unrealized Gains	241		1,440
Gross Unrealized Losses	3,513		188
Estimated Fair Value of Fixed Maturity Securities AFS	27,145		30,404
ABS & CLO
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	18,007		18,443
Allowance for Credit Loss for Debt Securities	0		0
Gross Unrealized Gains	43		185
Gross Unrealized Losses	1,284		59
Estimated Fair Value of Fixed Maturity Securities AFS	16,766		18,569
Municipals
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	13,464		11,761
Allowance for Credit Loss for Debt Securities	0		0
Gross Unrealized Gains	302		2,464
Gross Unrealized Losses	1,752		13
Estimated Fair Value of Fixed Maturity Securities AFS	12,014		14,212
CMBS
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	11,380		11,794
Allowance for Credit Loss for Debt Securities	(19)	$ (14)	(14)	$ (7)	$ (7)	$ 0
Gross Unrealized Gains	148		476
Gross Unrealized Losses	1,032		49
Estimated Fair Value of Fixed Maturity Securities AFS	$ 10,477		$ 12,207