Discontinued Operations Presentation - Schedule of Income Statement Line Items of Discontinued Operations (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
	Jun. 09, 2024	Jun. 30, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Benefits, losses and expenses:
Income (loss) from discontinued operations, net of income taxes			$ 0	$ (3,626)	$ 1,137
Less: Net income from discontinued operations attributable to noncontrolling interests			0	478	235
Net income (loss) from discontinued operations attributable to AIG			0	(4,104)	902
Other investments			$ 6,696	9,828
Discontinued Operations
Benefits, losses and expenses:
Loss on disposition of operations, net of tax	$ (4,754)	$ (4,800)
Discontinued Operations | Corebridge Financial Inc
Revenues:
Premiums				2,723	7,690
Policy fees				1,269	2,797
Net investment income				5,238	11,146
Net realized losses				(923)	(3,530)
Other income				372	761
Total revenues				8,679	18,864
Benefits, losses and expenses:
Policyholder benefits and losses incurred				3,618	9,362
Change in the fair value of market risk benefits, net				(350)	2
Interest credited to policyholder account balances				2,184	4,424
Amortization of deferred policy acquisition costs				465	1,037
General operating and other expenses				1,350	3,100
Interest expense				249	620
Net gain on divestitures and other				(191)	(672)
Total benefits, losses and expenses				7,325	17,873
Income from discontinued operations before income tax expense and loss on disposal of discontinued operations				1,354	991
Income tax expense (benefit)				226	(146)
Income from discontinued operations, net of income taxes before loss on disposal of discontinued operations				1,128	1,137
Loss on disposition of operations, net of tax				(4,754)	0
Income (loss) from discontinued operations, net of income taxes				(3,626)	1,137
Less: Net income from discontinued operations attributable to noncontrolling interests				478	235
Net income (loss) from discontinued operations attributable to AIG				$ (4,104)	$ 902