Lending Activities - Rollforward of the Changes in the Allowance for Credit Losses on Mortgage and Other Loans Receivable (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 14, 2022
Changes in the allowance for losses on Mortgage and other loans receivable
Allowance, beginning of year	$ 37,800	$ 140	$ 117
Loans charged off			(2)
Net charge-offs			(2)
Addition to (release of) allowance for loan losses			25
Allowance, end of year	37,747	37,800	140
Commercial mortgage loans
Changes in the allowance for losses on Mortgage and other loans receivable
Allowance, beginning of year	163	138	109
Loans charged off	(60)	0	(2)
Net charge-offs	(60)	0	(2)
Addition to (release of) allowance for loan losses	8	25	31
Allowance, end of year	111	163	138
Off-balance-sheet commitments	0	8	9
Total	2,495	3,305
Other Loans
Changes in the allowance for losses on Mortgage and other loans receivable
Allowance, beginning of year	1	2	8
Loans charged off	0	0	0
Net charge-offs	0	0	0
Addition to (release of) allowance for loan losses	(1)	(1)	(6)
Allowance, end of year	0	1	2
Excluding AIGFP Operating
Changes in the allowance for losses on Mortgage and other loans receivable
Allowance, beginning of year	164	140
Loans charged off	(60)	0
Net charge-offs	(60)	0
Addition to (release of) allowance for loan losses	7	24
Allowance, end of year	111	164	140
Total	2,998	4,032
AIG Financial Products
Changes in the allowance for losses on Mortgage and other loans receivable
Allowance, beginning of year	37,600	37,600
Allowance, end of year	37,600	37,600	37,600
Total	$ 37,600	$ 37,600	$ 37,600	$ 37,600