Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($)		Sep. 30, 2024	Jun. 30, 2024	Jun. 09, 2024	Dec. 31, 2023
Assets:
Bonds available for sale	[1]	$ 65,980,000,000			$ 65,242,000,000
Other bond securities		763,000,000			663,000,000
Equity securities		767,000,000			665,000,000
Derivative assets		619,000,000			1,292,000,000
Counterparty netting		(276,000,000)			(450,000,000)
Cash Collateral		$ (241,000,000)			$ (711,000,000)
Derivative Asset, Statement of Financial Position [Extensible Enumeration]		Other assets			Other assets
Total derivative assets		$ 102,000,000			$ 131,000,000
Short-term investments	[1]	11,848,000,000			12,865,000,000
Liabilities:
Derivative liabilities		654,000,000			952,000,000
Counterparty netting		(276,000,000)			(450,000,000)
Cash Collateral		$ (209,000,000)			$ (249,000,000)
Derivative Liability, Statement of Financial Position [Extensible Enumeration]		Other Liabilities			Other Liabilities
Total derivative liabilities		$ 169,000,000			$ 253,000,000
Fortitude Re funds withheld payable		(3,477,000,000)			(3,527,000,000)
Fair Value Using NAV Per Share (or its equivalent)		4,334,000,000			4,345,000,000
Corebridge Financial Inc
Assets:
Other invested assets				$ 1,195,000,000
Total				9,697,000,000
Liabilities:
Corebridge retained investment		8,100,000,000	$ 8,500,000,000	$ 8,502,000,000
U.S. government and government sponsored entities
Assets:
Bonds available for sale		4,514,000,000			4,395,000,000
Obligations of states, municipalities and political subdivisions
Assets:
Bonds available for sale		4,651,000,000			4,833,000,000
Non-U.S. governments
Assets:
Bonds available for sale		8,733,000,000			8,396,000,000
Corporate debt
Assets:
Bonds available for sale		33,034,000,000			32,346,000,000
RMBS
Assets:
Bonds available for sale		6,419,000,000			6,207,000,000
CMBS
Assets:
Bonds available for sale		4,106,000,000			4,147,000,000
CLO/ABS
Assets:
Bonds available for sale		4,523,000,000			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		128,000,000			332,000,000
Level 3 | RMBS
Assets:
Bonds available for sale		1,365,000,000			1,341,000,000
Level 3 | CMBS
Assets:
Bonds available for sale		19,000,000			22,000,000
Fair Value Measured at Net Asset Value Per Share
Liabilities:
Fair Value Using NAV Per Share (or its equivalent)		3,400,000,000			3,800,000,000
Recurring Basis
Assets:
Counterparty netting		(276,000,000)			(450,000,000)
Cash Collateral		(241,000,000)			(711,000,000)
Counterparty netting and cash collateral		(517,000,000)			(1,161,000,000)
Total derivative assets		102,000,000			131,000,000
Short-term investments		8,822,000,000			9,363,000,000
Liabilities:
Counterparty netting		(276,000,000)			(450,000,000)
Cash Collateral		(209,000,000)			(249,000,000)
Counterparty netting and cash collateral		(485,000,000)			(699,000,000)
Total derivative liabilities		169,000,000			253,000,000
Fortitude Re funds withheld payable		0			(148,000,000)
Other liabilities		268,000,000			482,000,000
Recurring Basis | Levels 1, 2 and 3
Assets:
Bonds available for sale		65,980,000,000			65,242,000,000
Other bond securities		763,000,000			663,000,000
Equity securities		767,000,000			665,000,000
Other invested assets		8,430,000,000			376,000,000
Short-term investments		8,822,000,000			9,363,000,000
Other assets		129,000,000			243,000,000
Total		84,993,000,000			76,683,000,000
Liabilities:
Fortitude Re funds withheld payable		0
Fortitude Re funds withheld payable					(148,000,000)
Other liabilities		99,000,000			229,000,000
Total		268,000,000			334,000,000
Recurring Basis | Levels 1, 2 and 3 | Discontinued Operations, Excluding Held-for-Sale
Assets:
Total		1,000,000			15,000,000
Recurring Basis | Levels 1, 2 and 3 | Interest rate contracts
Assets:
Derivative assets		305,000,000			741,000,000
Liabilities:
Derivative liabilities		333,000,000			352,000,000
Recurring Basis | Levels 1, 2 and 3 | Foreign exchange contracts
Assets:
Derivative assets		249,000,000			451,000,000
Liabilities:
Derivative liabilities		255,000,000			564,000,000
Recurring Basis | Levels 1, 2 and 3 | Equity contracts
Assets:
Derivative assets		31,000,000			66,000,000
Liabilities:
Derivative liabilities		31,000,000
Recurring Basis | Levels 1, 2 and 3 | Credit contracts
Assets:
Derivative assets		33,000,000			33,000,000
Liabilities:
Derivative liabilities		34,000,000			36,000,000
Recurring Basis | Levels 1, 2 and 3 | Other contracts
Assets:
Derivative assets		1,000,000			1,000,000
Liabilities:
Derivative liabilities		1,000,000
Recurring Basis | Levels 1, 2 and 3 | U.S. government and government sponsored entities
Assets:
Bonds available for sale		4,514,000,000			4,395,000,000
Recurring Basis | Levels 1, 2 and 3 | Obligations of states, municipalities and political subdivisions
Assets:
Bonds available for sale		4,651,000,000			4,833,000,000
Other bond securities		52,000,000			51,000,000
Recurring Basis | Levels 1, 2 and 3 | Non-U.S. governments
Assets:
Bonds available for sale		8,733,000,000			8,396,000,000
Other bond securities		27,000,000			24,000,000
Recurring Basis | Levels 1, 2 and 3 | Corporate debt
Assets:
Bonds available for sale		33,034,000,000			32,346,000,000
Other bond securities		299,000,000			255,000,000
Recurring Basis | Levels 1, 2 and 3 | RMBS
Assets:
Bonds available for sale		6,419,000,000			6,207,000,000
Other bond securities		107,000,000			93,000,000
Recurring Basis | Levels 1, 2 and 3 | CMBS
Assets:
Bonds available for sale		4,106,000,000			4,147,000,000
Other bond securities		44,000,000			33,000,000
Recurring Basis | Levels 1, 2 and 3 | CLO/ABS
Assets:
Bonds available for sale		4,523,000,000			4,918,000,000
Other bond securities		234,000,000			207,000,000
Recurring Basis | Level 1
Assets:
Bonds available for sale		182,000,000			248,000,000
Other bond securities		0			0
Equity securities		739,000,000			612,000,000
Other invested assets		8,143,000,000			0
Derivative assets		0			0
Short-term investments		4,969,000,000			2,613,000,000
Other assets		0			0
Total		14,033,000,000			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		1,000,000			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		181,000,000			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		62,242,000,000			61,555,000,000
Other bond securities		515,000,000			429,000,000
Equity securities		15,000,000			39,000,000
Other invested assets		129,000,000			155,000,000
Derivative assets		554,000,000			803,000,000
Short-term investments		3,853,000,000			6,750,000,000
Other assets		0			0
Total		67,308,000,000			69,731,000,000
Liabilities:
Derivative liabilities		588,000,000			916,000,000
Fortitude Re funds withheld payable		0
Fortitude Re funds withheld payable					0
Other liabilities		0			107,000,000
Total		588,000,000			1,023,000,000
Recurring Basis | Level 2 | Interest rate contracts
Assets:
Derivative assets		305,000,000			335,000,000
Liabilities:
Derivative liabilities		333,000,000			352,000,000
Recurring Basis | Level 2 | Foreign exchange contracts
Assets:
Derivative assets		249,000,000			450,000,000
Liabilities:
Derivative liabilities		255,000,000			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		4,513,000,000			4,380,000,000
Recurring Basis | Level 2 | Obligations of states, municipalities and political subdivisions
Assets:
Bonds available for sale		4,647,000,000			4,830,000,000
Other bond securities		52,000,000			51,000,000
Recurring Basis | Level 2 | Non-U.S. governments
Assets:
Bonds available for sale		8,545,000,000			8,156,000,000
Other bond securities		27,000,000			24,000,000
Recurring Basis | Level 2 | Corporate debt
Assets:
Bonds available for sale		32,649,000,000			32,023,000,000
Other bond securities		253,000,000			210,000,000
Recurring Basis | Level 2 | RMBS
Assets:
Bonds available for sale		4,324,000,000			4,415,000,000
Other bond securities		52,000,000			42,000,000
Recurring Basis | Level 2 | CMBS
Assets:
Bonds available for sale		4,024,000,000			4,122,000,000
Other bond securities		44,000,000			33,000,000
Recurring Basis | Level 2 | CLO/ABS
Assets:
Bonds available for sale		3,540,000,000			3,629,000,000
Other bond securities		87,000,000			69,000,000
Recurring Basis | Level 3
Assets:
Bonds available for sale		3,556,000,000			3,439,000,000
Other bond securities		248,000,000			234,000,000
Equity securities		13,000,000			14,000,000
Other invested assets		158,000,000			221,000,000
Derivative assets		65,000,000			489,000,000
Short-term investments		0			0
Other assets		129,000,000			243,000,000
Total		4,169,000,000			4,640,000,000
Liabilities:
Derivative liabilities		66,000,000			36,000,000
Fortitude Re funds withheld payable		0
Fortitude Re funds withheld payable					(148,000,000)
Other liabilities		99,000,000			122,000,000
Total		165,000,000			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		31,000,000			48,000,000
Liabilities:
Derivative liabilities		31,000,000
Recurring Basis | Level 3 | Credit contracts
Assets:
Derivative assets		33,000,000			33,000,000
Liabilities:
Derivative liabilities		34,000,000			33,000,000
Recurring Basis | Level 3 | Other contracts
Assets:
Derivative assets		1,000,000			1,000,000
Liabilities:
Derivative liabilities		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		385,000,000			323,000,000
Other bond securities		46,000,000			45,000,000
Recurring Basis | Level 3 | RMBS
Assets:
Bonds available for sale		2,095,000,000			1,792,000,000
Other bond securities		55,000,000			51,000,000
Recurring Basis | Level 3 | CMBS
Assets:
Bonds available for sale		82,000,000			25,000,000
Other bond securities		0			0
Recurring Basis | Level 3 | CLO/ABS
Assets:
Bonds available for sale		983,000,000			1,289,000,000
Other bond securities		$ 147,000,000			$ 138,000,000

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