Schedule II - Balance Sheets (Details) - USD ($) $ in Millions		Dec. 31, 2025	Dec. 31, 2024	Jun. 30, 2024	Jun. 09, 2024	Dec. 31, 2023
Assets:
Short-term investments		$ 11,141	$ 14,462
Other investments		6,696	9,828
Total investments		92,999	93,613
Cash		1,274	1,302			$ 1,540
Deferred income tax assets		5,096	4,956
Other assets		4,773	4,735
Total assets		161,254	161,322
Liabilities:
Long-term debt		9,191	8,922
Total liabilities		120,092	118,772
AIG Shareholders’ equity:
Additional paid-in capital		75,373	75,348
Retained earnings		37,186	35,079
Accumulated other comprehensive loss		(4,987)	(7,099)
Total AIG shareholders’ equity		41,139	42,521
Total liabilities and equity		161,254	161,322
Restricted cash	[1]	55	55			1
Corebridge Financial Inc
Assets:
Retained investment in Corebridge using fair value option		1,512	3,810		$ 12,409
Other investments				$ 817
Parent Company
Assets:
Short-term investments		5,792	8,360
Other investments		1,261	393
Total investments		8,565	12,563
Cash		8	4			10
Loans to subsidiaries		231	0
Intercompany tax receivable		159	288
Deferred income tax assets		3,396	3,380
Investment in consolidated subsidiaries		38,171	35,312
Other assets		792	755
Total assets		53,246	54,233
Liabilities:
Intercompany tax payable		738	551
Other liabilities		1,438	1,144
Total liabilities		12,107	11,712
AIG Shareholders’ equity:
Common stock		4,766	4,766
Treasury stock		(71,199)	(65,573)
Additional paid-in capital		75,373	75,348
Retained earnings		37,186	35,079
Accumulated other comprehensive loss		(4,987)	(7,099)
Total AIG shareholders’ equity		41,139	42,521
Total liabilities and equity		53,246	54,233
Restricted cash		55	55			$ 0
Parent Company | Related Party
Assets:
Due from affiliates - net		1,924	1,931
Liabilities:
Due to affiliates		417	1,031
Loans from subsidiaries		479	462
Parent Company | AIGFP Operating
Liabilities:
Long-term debt		18	18
Parent Company | Notes and bonds payable
Liabilities:
Long-term debt		8,536	7,904
Parent Company | Junior subordinated debt
Liabilities:
Long-term debt		$ 481	$ 602

[1] Includes funds held for tax sharing payments to AIG Parent, security deposits, and replacement reserve deposits related to real estate.