Discontinued Operations Presentation - Schedule of Income Statement Line Items of Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Benefits, losses and expenses:
Loss from discontinued operations, net of income taxes	$ 0	$ (4,359)	$ 0	$ (3,556)
Less: Net income from discontinued operations attributable to noncontrolling interests	0	93	0	477
Net loss from discontinued operations attributable to AIG	0	(4,452)	0	(4,033)
Other investments	$ 9,987		$ 9,987		$ 9,828
Discontinued Operations
Benefits, losses and expenses:
Loss on disposition of operations, net of tax		(4,800)
Discontinued Operations | Corebridge Financial Inc
Revenues:
Premiums		428		2,723
Policy fees		555		1,269
Net investment income		2,314		5,238
Net realized losses		(587)		(923)
Other income		155		372
Total revenues		2,865		8,679
Benefits, losses and expenses:
Policyholder benefits and losses incurred		811		3,618
Change in the fair value of market risk benefits, net		20		(350)
Interest credited to policyholder account balances		980		2,184
Amortization of deferred policy acquisition costs		199		465
General operating and other expenses		574		1,350
Interest expense		106		249
Net gain on divestitures and other		(186)		(191)
Total benefits, losses and expenses		2,504		7,325
Income from discontinued operations before income tax expense and loss on disposal of discontinued operations		361		1,354
Income tax expense		36		226
Income from discontinued operations, net of income taxes before loss on disposal of discontinued operations		325		1,128
Loss on disposition of operations, net of tax		(4,684)		(4,684)
Loss from discontinued operations, net of income taxes		(4,359)		(3,556)
Less: Net income from discontinued operations attributable to noncontrolling interests		93		477
Net loss from discontinued operations attributable to AIG		$ (4,452)		$ (4,033)