Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($)		Dec. 31, 2024	Jun. 30, 2024	Jun. 09, 2024	Dec. 31, 2023
Assets:
Bonds available for sale	[1]	$ 64,006,000,000			$ 65,242,000,000
Other bond securities		745,000,000			663,000,000
Equity securities		704,000,000			665,000,000
Derivative assets		624,000,000			1,292,000,000
Counterparty netting		(270,000,000)			(450,000,000)
Cash Collateral		$ (304,000,000)			$ (711,000,000)
Derivative Asset, Statement of Financial Position [Extensible Enumeration]		Other assets			Other assets
Total derivative assets		$ 50,000,000			$ 131,000,000
Short-term investments	[1]	14,462,000,000			12,865,000,000
Liabilities:
Derivative liabilities		622,000,000			952,000,000
Counterparty netting		(270,000,000)			(450,000,000)
Cash Collateral		$ (201,000,000)			$ (249,000,000)
Derivative Liability, Statement of Financial Position [Extensible Enumeration]		Other Liabilities			Other Liabilities
Total derivative liabilities		$ 151,000,000			$ 253,000,000
Fortitude Re funds withheld payable		(3,207,000,000)			(3,527,000,000)
Fair Value Using NAV Per Share (or its equivalent)		4,032,000,000			4,345,000,000
Corebridge Financial Inc
Assets:
Other invested assets				$ 1,180,000,000
Total				9,682,000,000
Liabilities:
Corebridge retained investment		3,800,000,000	$ 8,500,000,000	$ 8,502,000,000
U.S. government and government sponsored entities
Assets:
Bonds available for sale		3,267,000,000			4,395,000,000
Obligations of states, municipalities and political subdivisions
Assets:
Bonds available for sale		3,143,000,000			4,833,000,000
Non-U.S. governments
Assets:
Bonds available for sale		8,107,000,000			8,396,000,000
Corporate debt
Assets:
Bonds available for sale		31,826,000,000			32,346,000,000
RMBS
Assets:
Bonds available for sale		8,604,000,000			6,207,000,000
CMBS
Assets:
Bonds available for sale		3,926,000,000			4,147,000,000
CLO/ABS
Assets:
Bonds available for sale		5,133,000,000			4,918,000,000
Level 3 | Obligations of states, municipalities and political subdivisions
Assets:
Bonds available for sale		3,000,000			3,000,000
Level 3 | Corporate debt
Assets:
Bonds available for sale		177,000,000			332,000,000
Level 3 | RMBS
Assets:
Bonds available for sale		1,321,000,000			1,341,000,000
Level 3 | CMBS
Assets:
Bonds available for sale		25,000,000			22,000,000
Fair Value Measured at Net Asset Value Per Share
Liabilities:
Fair Value Using NAV Per Share (or its equivalent)		3,300,000,000			3,800,000,000
Recurring Basis
Assets:
Counterparty netting		(270,000,000)			(450,000,000)
Cash Collateral		(304,000,000)			(711,000,000)
Counterparty netting and cash collateral		(574,000,000)			(1,161,000,000)
Total derivative assets		50,000,000			131,000,000
Short-term investments		9,789,000,000			9,363,000,000
Liabilities:
Counterparty netting		(270,000,000)			(450,000,000)
Cash Collateral		(201,000,000)			(249,000,000)
Counterparty netting and cash collateral		(471,000,000)			(699,000,000)
Total derivative liabilities		151,000,000			253,000,000
Fortitude Re funds withheld payable		(128,000,000)			(148,000,000)
Other liabilities		251,000,000			482,000,000
Recurring Basis | Levels 1, 2 and 3
Assets:
Bonds available for sale		64,006,000,000			65,242,000,000
Other bond securities		745,000,000			663,000,000
Equity securities		704,000,000			665,000,000
Other invested assets		4,092,000,000			376,000,000
Short-term investments		9,789,000,000			9,363,000,000
Other assets		129,000,000			243,000,000
Total		79,515,000,000			76,683,000,000
Liabilities:
Fortitude Re funds withheld payable		(128,000,000)
Fortitude Re funds withheld payable					(148,000,000)
Other liabilities		100,000,000			229,000,000
Total		123,000,000			334,000,000
Recurring Basis | Levels 1, 2 and 3 | Discontinued Operations, Excluding Held-for-Sale
Assets:
Total					15,000,000
Recurring Basis | Levels 1, 2 and 3 | Interest rate contracts
Assets:
Derivative assets		277,000,000			741,000,000
Liabilities:
Derivative liabilities		304,000,000			352,000,000
Recurring Basis | Levels 1, 2 and 3 | Foreign exchange contracts
Assets:
Derivative assets		296,000,000			451,000,000
Liabilities:
Derivative liabilities		267,000,000			564,000,000
Recurring Basis | Levels 1, 2 and 3 | Equity contracts
Assets:
Derivative assets		20,000,000			66,000,000
Liabilities:
Derivative liabilities		20,000,000
Recurring Basis | Levels 1, 2 and 3 | Credit contracts
Assets:
Derivative assets		31,000,000			33,000,000
Liabilities:
Derivative liabilities		31,000,000			36,000,000
Recurring Basis | Levels 1, 2 and 3 | Other contracts
Assets:
Derivative assets					1,000,000
Recurring Basis | Levels 1, 2 and 3 | U.S. government and government sponsored entities
Assets:
Bonds available for sale		3,267,000,000			4,395,000,000
Recurring Basis | Levels 1, 2 and 3 | Obligations of states, municipalities and political subdivisions
Assets:
Bonds available for sale		3,143,000,000			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		8,107,000,000			8,396,000,000
Other bond securities		24,000,000			24,000,000
Recurring Basis | Levels 1, 2 and 3 | Corporate debt
Assets:
Bonds available for sale		31,826,000,000			32,346,000,000
Other bond securities		282,000,000			255,000,000
Recurring Basis | Levels 1, 2 and 3 | RMBS
Assets:
Bonds available for sale		8,604,000,000			6,207,000,000
Other bond securities		100,000,000			93,000,000
Recurring Basis | Levels 1, 2 and 3 | CMBS
Assets:
Bonds available for sale		3,926,000,000			4,147,000,000
Other bond securities		43,000,000			33,000,000
Recurring Basis | Levels 1, 2 and 3 | CLO/ABS
Assets:
Bonds available for sale		5,133,000,000			4,918,000,000
Other bond securities		246,000,000			207,000,000
Recurring Basis | Level 1
Assets:
Bonds available for sale		197,000,000			248,000,000
Other bond securities		0			0
Equity securities		689,000,000			612,000,000
Other invested assets		3,810,000,000			0
Derivative assets		0			0
Short-term investments		7,942,000,000			2,613,000,000
Other assets		0			0
Total		12,638,000,000			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
Recurring Basis | Level 1 | U.S. government and government sponsored entities
Assets:
Bonds available for sale		36,000,000			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		0			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		60,799,000,000			61,555,000,000
Other bond securities		581,000,000			429,000,000
Equity securities		0			39,000,000
Other invested assets		119,000,000			155,000,000
Derivative assets		573,000,000			803,000,000
Short-term investments		1,847,000,000			6,750,000,000
Other assets		0			0
Total		63,919,000,000			69,731,000,000
Liabilities:
Derivative liabilities		571,000,000			916,000,000
Fortitude Re funds withheld payable		0
Fortitude Re funds withheld payable					0
Other liabilities		0			107,000,000
Total		571,000,000			1,023,000,000
Recurring Basis | Level 2 | Interest rate contracts
Assets:
Derivative assets		277,000,000			335,000,000
Liabilities:
Derivative liabilities		304,000,000			352,000,000
Recurring Basis | Level 2 | Foreign exchange contracts
Assets:
Derivative assets		296,000,000			450,000,000
Liabilities:
Derivative liabilities		267,000,000			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
Recurring Basis | Level 2 | U.S. government and government sponsored entities
Assets:
Bonds available for sale		3,231,000,000			4,380,000,000
Recurring Basis | Level 2 | Obligations of states, municipalities and political subdivisions
Assets:
Bonds available for sale		3,140,000,000			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		7,939,000,000			8,156,000,000
Other bond securities		24,000,000			24,000,000
Recurring Basis | Level 2 | Corporate debt
Assets:
Bonds available for sale		31,586,000,000			32,023,000,000
Other bond securities		281,000,000			210,000,000
Recurring Basis | Level 2 | RMBS
Assets:
Bonds available for sale		6,710,000,000			4,415,000,000
Other bond securities		50,000,000			42,000,000
Recurring Basis | Level 2 | CMBS
Assets:
Bonds available for sale		3,900,000,000			4,122,000,000
Other bond securities		43,000,000			33,000,000
Recurring Basis | Level 2 | CLO/ABS
Assets:
Bonds available for sale		4,293,000,000			3,629,000,000
Other bond securities		133,000,000			69,000,000
Recurring Basis | Level 3
Assets:
Bonds available for sale		3,010,000,000			3,439,000,000
Other bond securities		164,000,000			234,000,000
Equity securities		15,000,000			14,000,000
Other invested assets		163,000,000			221,000,000
Derivative assets		51,000,000			489,000,000
Short-term investments		0			0
Other assets		129,000,000			243,000,000
Total		3,532,000,000			4,640,000,000
Liabilities:
Derivative liabilities		51,000,000			36,000,000
Fortitude Re funds withheld payable		(128,000,000)
Fortitude Re funds withheld payable					(148,000,000)
Other liabilities		100,000,000			122,000,000
Total		23,000,000			10,000,000
Recurring Basis | Level 3 | Interest rate contracts
Assets:
Derivative assets		0			406,000,000
Liabilities:
Derivative liabilities		0			0
Recurring Basis | Level 3 | Foreign exchange contracts
Assets:
Derivative assets		0			1,000,000
Liabilities:
Derivative liabilities		0			3,000,000
Recurring Basis | Level 3 | Equity contracts
Assets:
Derivative assets		20,000,000			48,000,000
Liabilities:
Derivative liabilities		20,000,000
Recurring Basis | Level 3 | Credit contracts
Assets:
Derivative assets		31,000,000			33,000,000
Liabilities:
Derivative liabilities		31,000,000			33,000,000
Recurring Basis | Level 3 | Other contracts
Assets:
Derivative assets					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		3,000,000			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		240,000,000			323,000,000
Other bond securities		1,000,000			45,000,000
Recurring Basis | Level 3 | RMBS
Assets:
Bonds available for sale		1,894,000,000			1,792,000,000
Other bond securities		50,000,000			51,000,000
Recurring Basis | Level 3 | CMBS
Assets:
Bonds available for sale		26,000,000			25,000,000
Other bond securities		0			0
Recurring Basis | Level 3 | CLO/ABS
Assets:
Bonds available for sale		840,000,000			1,289,000,000
Other bond securities		$ 113,000,000			$ 138,000,000

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