Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($)		Jun. 30, 2024	Jun. 09, 2024	Dec. 31, 2023
Assets:
Bonds available for sale	[1]	$ 62,333,000,000		$ 65,242,000,000
Other bond securities	[1]	766,000,000		663,000,000
Equity securities	[1]	688,000,000		665,000,000
Derivative assets		592,000,000		1,292,000,000
Counterparty netting		(245,000,000)		(450,000,000)
Cash Collateral		$ (288,000,000)		$ (711,000,000)
Derivative Asset, Statement of Financial Position [Extensible Enumeration]		Other assets		Other assets
Total derivative assets		$ 59,000,000		$ 131,000,000
Short-term investments	[1]	12,563,000,000		12,865,000,000
Liabilities:
Derivative liabilities		649,000,000		952,000,000
Counterparty netting		(245,000,000)		(450,000,000)
Cash Collateral		$ (180,000,000)		$ (249,000,000)
Derivative Liability, Statement of Financial Position [Extensible Enumeration]		Other Liabilities		Other Liabilities
Total derivative liabilities		$ 224,000,000		$ 253,000,000
Fortitude Re funds withheld payable		(3,364,000,000)		(3,527,000,000)
Fair Value Using NAV Per Share (or its equivalent)		4,283,000,000		4,345,000,000
Corebridge Financial Inc
Assets:
Other invested assets			$ 1,195,000,000
Total			9,697,000,000
Liabilities:
Corebridge retained investment		8,600,000,000	$ 8,502,000,000
U.S. government and government sponsored entities
Assets:
Bonds available for sale		4,409,000,000		4,395,000,000
Obligations of states, municipalities and political subdivisions
Assets:
Bonds available for sale		4,492,000,000		4,833,000,000
Non-U.S. governments
Assets:
Bonds available for sale		8,061,000,000		8,396,000,000
Corporate debt
Assets:
Bonds available for sale		30,787,000,000		32,346,000,000
RMBS
Assets:
Bonds available for sale		5,778,000,000		6,207,000,000
CMBS
Assets:
Bonds available for sale		4,287,000,000		4,147,000,000
CLO/ABS
Assets:
Bonds available for sale		4,519,000,000		4,918,000,000
Level 3 | Obligations of states, municipalities and political subdivisions
Assets:
Bonds available for sale		4,000,000		3,000,000
Level 3 | Corporate debt
Assets:
Bonds available for sale		306,000,000		332,000,000
Level 3 | RMBS
Assets:
Bonds available for sale		1,268,000,000		1,341,000,000
Level 3 | CMBS
Assets:
Bonds available for sale		14,000,000		22,000,000
Fair Value Measured at Net Asset Value Per Share
Liabilities:
Fair Value Using NAV Per Share (or its equivalent)		3,600,000,000		3,800,000,000
Recurring Basis
Assets:
Counterparty netting		(245,000,000)		(450,000,000)
Cash Collateral		(288,000,000)		(711,000,000)
Counterparty netting and cash collateral		(533,000,000)		(1,161,000,000)
Total derivative assets		59,000,000		131,000,000
Short-term investments		8,137,000,000		9,363,000,000
Liabilities:
Counterparty netting		(245,000,000)		(450,000,000)
Cash Collateral		(180,000,000)		(249,000,000)
Counterparty netting and cash collateral		(425,000,000)		(699,000,000)
Total derivative liabilities		224,000,000		253,000,000
Fortitude Re funds withheld payable		(154,000,000)		(148,000,000)
Other liabilities		323,000,000		482,000,000
Recurring Basis | Levels 1, 2 and 3
Assets:
Bonds available for sale		62,333,000,000		65,242,000,000
Other bond securities		766,000,000		663,000,000
Equity securities		688,000,000		665,000,000
Other invested assets		8,836,000,000		376,000,000
Short-term investments		8,137,000,000		9,363,000,000
Other assets		130,000,000		243,000,000
Total		80,949,000,000		76,683,000,000
Liabilities:
Fortitude Re funds withheld payable		(154,000,000)
Fortitude Re funds withheld payable				(148,000,000)
Other liabilities		99,000,000		229,000,000
Total		169,000,000		334,000,000
Recurring Basis | Levels 1, 2 and 3 | Discontinued Operations, Excluding Held-for-Sale
Assets:
Total		22,000,000		15,000,000
Recurring Basis | Levels 1, 2 and 3 | Interest rate contracts
Assets:
Derivative assets		266,000,000		741,000,000
Liabilities:
Derivative liabilities		291,000,000		352,000,000
Recurring Basis | Levels 1, 2 and 3 | Foreign exchange contracts
Assets:
Derivative assets		257,000,000		451,000,000
Liabilities:
Derivative liabilities		325,000,000		564,000,000
Recurring Basis | Levels 1, 2 and 3 | Equity contracts
Assets:
Derivative assets		35,000,000		66,000,000
Recurring Basis | Levels 1, 2 and 3 | Credit contracts
Assets:
Derivative assets		33,000,000		33,000,000
Liabilities:
Derivative liabilities		33,000,000		36,000,000
Recurring Basis | Levels 1, 2 and 3 | Other contracts
Assets:
Derivative assets		1,000,000		1,000,000
Recurring Basis | Levels 1, 2 and 3 | U.S. government and government sponsored entities
Assets:
Bonds available for sale		4,409,000,000		4,395,000,000
Recurring Basis | Levels 1, 2 and 3 | Obligations of states, municipalities and political subdivisions
Assets:
Bonds available for sale		4,492,000,000		4,833,000,000
Other bond securities		50,000,000		51,000,000
Recurring Basis | Levels 1, 2 and 3 | Non-U.S. governments
Assets:
Bonds available for sale		8,061,000,000		8,396,000,000
Other bond securities		25,000,000		24,000,000
Recurring Basis | Levels 1, 2 and 3 | Corporate debt
Assets:
Bonds available for sale		30,787,000,000		32,346,000,000
Other bond securities		311,000,000		255,000,000
Recurring Basis | Levels 1, 2 and 3 | RMBS
Assets:
Bonds available for sale		5,778,000,000		6,207,000,000
Other bond securities		102,000,000		93,000,000
Recurring Basis | Levels 1, 2 and 3 | CMBS
Assets:
Bonds available for sale		4,287,000,000		4,147,000,000
Other bond securities		42,000,000		33,000,000
Recurring Basis | Levels 1, 2 and 3 | CLO/ABS
Assets:
Bonds available for sale		4,519,000,000		4,918,000,000
Other bond securities		236,000,000		207,000,000
Recurring Basis | Level 1
Assets:
Bonds available for sale		186,000,000		248,000,000
Other bond securities		0		0
Equity securities		659,000,000		612,000,000
Other invested assets		8,567,000,000		0
Derivative assets		0		0
Short-term investments		3,845,000,000		2,613,000,000
Other assets		0		0
Total		13,257,000,000		3,473,000,000
Liabilities:
Derivative liabilities		0		0
Fortitude Re funds withheld payable		0
Fortitude Re funds withheld payable				0
Other liabilities		0		0
Total		0		0
Recurring Basis | Level 1 | Interest rate contracts
Assets:
Derivative assets		0		0
Liabilities:
Derivative liabilities		0		0
Recurring Basis | Level 1 | Foreign exchange contracts
Assets:
Derivative assets		0		0
Liabilities:
Derivative liabilities		0		0
Recurring Basis | Level 1 | Equity contracts
Assets:
Derivative assets		0		0
Recurring Basis | Level 1 | Credit contracts
Assets:
Derivative assets		0		0
Liabilities:
Derivative liabilities		0		0
Recurring Basis | Level 1 | Other contracts
Assets:
Derivative assets		0		0
Recurring Basis | Level 1 | U.S. government and government sponsored entities
Assets:
Bonds available for sale		24,000,000		15,000,000
Recurring Basis | Level 1 | Obligations of states, municipalities and political subdivisions
Assets:
Bonds available for sale		0		0
Other bond securities		0		0
Recurring Basis | Level 1 | Non-U.S. governments
Assets:
Bonds available for sale		161,000,000		233,000,000
Other bond securities		0		0
Recurring Basis | Level 1 | Corporate debt
Assets:
Bonds available for sale		1,000,000		0
Other bond securities		0		0
Recurring Basis | Level 1 | RMBS
Assets:
Bonds available for sale		0		0
Other bond securities		0		0
Recurring Basis | Level 1 | CMBS
Assets:
Bonds available for sale		0		0
Other bond securities		0		0
Recurring Basis | Level 1 | CLO/ABS
Assets:
Bonds available for sale		0		0
Other bond securities		0		0
Recurring Basis | Level 2
Assets:
Bonds available for sale		58,392,000,000		61,555,000,000
Other bond securities		528,000,000		429,000,000
Equity securities		16,000,000		39,000,000
Other invested assets		124,000,000		155,000,000
Derivative assets		519,000,000		803,000,000
Short-term investments		4,292,000,000		6,750,000,000
Other assets		0		0
Total		63,871,000,000		69,731,000,000
Liabilities:
Derivative liabilities		615,000,000		916,000,000
Fortitude Re funds withheld payable		0
Fortitude Re funds withheld payable				0
Other liabilities		0		107,000,000
Total		615,000,000		1,023,000,000
Recurring Basis | Level 2 | Interest rate contracts
Assets:
Derivative assets		263,000,000		335,000,000
Liabilities:
Derivative liabilities		291,000,000		352,000,000
Recurring Basis | Level 2 | Foreign exchange contracts
Assets:
Derivative assets		256,000,000		450,000,000
Liabilities:
Derivative liabilities		324,000,000		561,000,000
Recurring Basis | Level 2 | Equity contracts
Assets:
Derivative assets		0		18,000,000
Recurring Basis | Level 2 | Credit contracts
Assets:
Derivative assets		0		0
Liabilities:
Derivative liabilities		0		3,000,000
Recurring Basis | Level 2 | Other contracts
Assets:
Derivative assets		0		0
Recurring Basis | Level 2 | U.S. government and government sponsored entities
Assets:
Bonds available for sale		4,385,000,000		4,380,000,000
Recurring Basis | Level 2 | Obligations of states, municipalities and political subdivisions
Assets:
Bonds available for sale		4,488,000,000		4,830,000,000
Other bond securities		50,000,000		51,000,000
Recurring Basis | Level 2 | Non-U.S. governments
Assets:
Bonds available for sale		7,893,000,000		8,156,000,000
Other bond securities		25,000,000		24,000,000
Recurring Basis | Level 2 | Corporate debt
Assets:
Bonds available for sale		30,427,000,000		32,023,000,000
Other bond securities		267,000,000		210,000,000
Recurring Basis | Level 2 | RMBS
Assets:
Bonds available for sale		3,762,000,000		4,415,000,000
Other bond securities		53,000,000		42,000,000
Recurring Basis | Level 2 | CMBS
Assets:
Bonds available for sale		4,193,000,000		4,122,000,000
Other bond securities		42,000,000		33,000,000
Recurring Basis | Level 2 | CLO/ABS
Assets:
Bonds available for sale		3,244,000,000		3,629,000,000
Other bond securities		91,000,000		69,000,000
Recurring Basis | Level 3
Assets:
Bonds available for sale		3,755,000,000		3,439,000,000
Other bond securities		238,000,000		234,000,000
Equity securities		13,000,000		14,000,000
Other invested assets		145,000,000		221,000,000
Derivative assets		73,000,000		489,000,000
Short-term investments		0		0
Other assets		130,000,000		243,000,000
Total		4,354,000,000		4,640,000,000
Liabilities:
Derivative liabilities		34,000,000		36,000,000
Fortitude Re funds withheld payable		(154,000,000)
Fortitude Re funds withheld payable				(148,000,000)
Other liabilities		99,000,000		122,000,000
Total		(21,000,000)		10,000,000
Recurring Basis | Level 3 | Interest rate contracts
Assets:
Derivative assets		3,000,000		406,000,000
Liabilities:
Derivative liabilities		0		0
Recurring Basis | Level 3 | Foreign exchange contracts
Assets:
Derivative assets		1,000,000		1,000,000
Liabilities:
Derivative liabilities		1,000,000		3,000,000
Recurring Basis | Level 3 | Equity contracts
Assets:
Derivative assets		35,000,000		48,000,000
Recurring Basis | Level 3 | Credit contracts
Assets:
Derivative assets		33,000,000		33,000,000
Liabilities:
Derivative liabilities		33,000,000		33,000,000
Recurring Basis | Level 3 | Other contracts
Assets:
Derivative assets		1,000,000		1,000,000
Recurring Basis | Level 3 | U.S. government and government sponsored entities
Assets:
Bonds available for sale		0		0
Recurring Basis | Level 3 | Obligations of states, municipalities and political subdivisions
Assets:
Bonds available for sale		4,000,000		3,000,000
Other bond securities		0		0
Recurring Basis | Level 3 | Non-U.S. governments
Assets:
Bonds available for sale		7,000,000		7,000,000
Other bond securities		0		0
Recurring Basis | Level 3 | Corporate debt
Assets:
Bonds available for sale		359,000,000		323,000,000
Other bond securities		44,000,000		45,000,000
Recurring Basis | Level 3 | RMBS
Assets:
Bonds available for sale		2,016,000,000		1,792,000,000
Other bond securities		49,000,000		51,000,000
Recurring Basis | Level 3 | CMBS
Assets:
Bonds available for sale		94,000,000		25,000,000
Other bond securities		0		0
Recurring Basis | Level 3 | CLO/ABS
Assets:
Bonds available for sale		1,275,000,000		1,289,000,000
Other bond securities		$ 145,000,000		$ 138,000,000

[1] See Note 10 for details of balances associated with variable interest entities.