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Lending Activities - Composition of Mortgages and Other Loans Receivable (Details) - USD ($) $ in Millions		12 Months Ended
	Dec. 14, 2022	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Composition of Mortgages and other loans receivable
Allowance for credit losses		$ (37,747)	$ (37,800)	$ (140)	$ (117)
Mortgage and other loans receivable, net		2,887	3,868
Parent Company
Composition of Mortgages and other loans receivable
Pre-tax loss on deconsolidation	$ 114
Commercial mortgages
Composition of Mortgages and other loans receivable
Total mortgage and other loans receivable		2,495	3,305
Allowance for credit losses		(111)	(163)	(138)	$ (109)
Off-balance-sheet commitments		0	8	9
Loans on nonaccrual status		160	252
Accrued interest receivable		$ 11	$ 15
Commercial mortgages \| Geographic Concentration Risk \| Interest on mortgage and other loans \| New York
Composition of Mortgages and other loans receivable
Percentage of mortgage loans in geographic area		13.00%	12.00%
Commercial mortgages \| Geographic Concentration Risk \| Interest on mortgage and other loans \| California
Composition of Mortgages and other loans receivable
Percentage of mortgage loans in geographic area		14.00%	14.00%
Life insurance policy loans
Composition of Mortgages and other loans receivable
Total mortgage and other loans receivable		$ 4	$ 6
Commercial loans, other loans and notes receivable
Composition of Mortgages and other loans receivable
Total mortgage and other loans receivable		499	721
Excluding AIGFP Operating
Composition of Mortgages and other loans receivable
Total mortgage and other loans receivable		2,998	4,032
Allowance for credit losses		(111)	(164)	(140)
Mortgage and other loans receivable, net		2,887	3,868
AIG Financial Products
Composition of Mortgages and other loans receivable
Total mortgage and other loans receivable	$ 37,600	37,600	37,600	37,600
Allowance for credit losses		$ (37,600)	$ (37,600)	$ (37,600)