Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Jun. 30, 2024	Jun. 09, 2024
Assets:
Bonds available for sale	$ 71,032	$ 64,006
Other bond securities	741	745
Equity securities	502	704
Derivative assets	338	624
Counterparty netting	(164)	(270)
Cash Collateral	$ (169)	$ (304)
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Derivative assets	$ 5	$ 50
Short-term investments	11,141	14,462
Liabilities:
Derivative liabilities	465	622
Counterparty netting	(164)	(270)
Cash Collateral	$ (212)	$ (201)
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other Liabilities	Other Liabilities
Derivative liabilities	$ 89	$ 151
Fortitude Re funds withheld payable	(3,038)	(3,207)
Fair Value Using NAV Per Share (or its equivalent)	3,456	4,032
Corebridge Financial Inc
Assets:
Other invested assets				$ 1,180
Total				9,682
Liabilities:
Corebridge retained investment	1,500	3,800	$ 8,500	$ 8,502
U.S. government and government sponsored entities
Assets:
Bonds available for sale	3,298	3,267
Obligations of states, municipalities and political subdivisions
Assets:
Bonds available for sale	2,775	3,143
Non-U.S. governments
Assets:
Bonds available for sale	6,516	8,107
Corporate debt
Assets:
Bonds available for sale	37,235	31,826
RMBS
Assets:
Bonds available for sale	10,168	8,604
CMBS
Assets:
Bonds available for sale	4,616	3,926
CLO/ABS
Assets:
Bonds available for sale	6,424	5,133
Levels 1, 2 and 3
Assets:
Bonds available for sale	71,032	64,006
Other bond securities	741	745
Equity securities	502	704
Other invested assets	1,747	4,092
Short-term investments	5,909	9,789
Other assets	130	129
Total	80,066	79,515
Liabilities:
Fortitude Re funds withheld payable	(92)	(128)
Other liabilities	73	100
Total	70	123
Levels 1, 2 and 3 | U.S. government and government sponsored entities
Assets:
Bonds available for sale	3,298	3,267
Levels 1, 2 and 3 | Obligations of states, municipalities and political subdivisions
Assets:
Bonds available for sale	2,775	3,143
Other bond securities	51	50
Levels 1, 2 and 3 | Non-U.S. governments
Assets:
Bonds available for sale	6,516	8,107
Other bond securities	23	24
Levels 1, 2 and 3 | Corporate debt
Assets:
Bonds available for sale	37,235	31,826
Other bond securities	274	282
Levels 1, 2 and 3 | RMBS
Assets:
Bonds available for sale	10,168	8,604
Other bond securities	97	100
Levels 1, 2 and 3 | CMBS
Assets:
Bonds available for sale	4,616	3,926
Other bond securities	42	43
Levels 1, 2 and 3 | CLO/ABS
Assets:
Bonds available for sale	6,424	5,133
Other bond securities	254	246
Level 1
Assets:
Bonds available for sale	275	197
Other bond securities	0	0
Equity securities	446	689
Other invested assets	1,512	3,810
Derivative assets	0	0
Short-term investments	4,106	7,942
Other assets	0	0
Total	6,339	12,638
Liabilities:
Derivative liabilities	0	0
Fortitude Re funds withheld payable	0	0
Other liabilities	0	0
Total	0	0
Level 1 | U.S. government and government sponsored entities
Assets:
Bonds available for sale	209	36
Level 1 | Obligations of states, municipalities and political subdivisions
Assets:
Bonds available for sale	0	0
Other bond securities	0	0
Level 1 | Non-U.S. governments
Assets:
Bonds available for sale	66	161
Other bond securities	0	0
Level 1 | Corporate debt
Assets:
Bonds available for sale	0	0
Other bond securities	0	0
Level 1 | RMBS
Assets:
Bonds available for sale	0	0
Other bond securities	0	0
Level 1 | CMBS
Assets:
Bonds available for sale	0	0
Other bond securities	0	0
Level 1 | CLO/ABS
Assets:
Bonds available for sale	0	0
Other bond securities	0	0
Level 2
Assets:
Bonds available for sale	67,306	60,799
Other bond securities	571	581
Equity securities	1	0
Other invested assets	143	119
Derivative assets	312	573
Short-term investments	1,803	1,847
Other assets	0	0
Total	70,136	63,919
Liabilities:
Derivative liabilities	439	571
Fortitude Re funds withheld payable	0	0
Other liabilities	0	0
Total	439	571
Level 2 | U.S. government and government sponsored entities
Assets:
Bonds available for sale	3,089	3,231
Level 2 | Obligations of states, municipalities and political subdivisions
Assets:
Bonds available for sale	2,771	3,140
Other bond securities	51	50
Level 2 | Non-U.S. governments
Assets:
Bonds available for sale	6,427	7,939
Other bond securities	23	24
Level 2 | Corporate debt
Assets:
Bonds available for sale	37,122	31,586
Other bond securities	274	281
Level 2 | RMBS
Assets:
Bonds available for sale	8,622	6,710
Other bond securities	46	50
Level 2 | CMBS
Assets:
Bonds available for sale	4,592	3,900
Other bond securities	42	43
Level 2 | CLO/ABS
Assets:
Bonds available for sale	4,683	4,293
Other bond securities	135	133
Level 3
Assets:
Bonds available for sale	3,451	3,010
Other bond securities	170	164
Equity securities	55	15
Other invested assets	92	163
Derivative assets	26	51
Short-term investments	0	0
Other assets	130	129
Total	3,924	3,532
Liabilities:
Derivative liabilities	26	51
Fortitude Re funds withheld payable	(92)	(128)
Other liabilities	73	100
Total	7	23
Level 3 | U.S. government and government sponsored entities
Assets:
Bonds available for sale	0	0
Level 3 | Obligations of states, municipalities and political subdivisions
Assets:
Bonds available for sale	4	3
Other bond securities	0	0
Level 3 | Non-U.S. governments
Assets:
Bonds available for sale	23	7
Other bond securities	0	0
Level 3 | Corporate debt
Assets:
Bonds available for sale	113	240
Other bond securities	0	1
Level 3 | RMBS
Assets:
Bonds available for sale	1,546	1,894
Other bond securities	51	50
Level 3 | CMBS
Assets:
Bonds available for sale	24	26
Other bond securities	0	0
Level 3 | CLO/ABS
Assets:
Bonds available for sale	1,741	840
Other bond securities	119	113
Fair Value Measured at Net Asset Value Per Share
Liabilities:
Fair Value Using NAV Per Share (or its equivalent)	$ 3,300	$ 3,300