Held-For-Sale Classification and Discontinued Operations Presentation - Schedule of Income Statement Line Items of Discontinued Operations (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Benefits, losses and expenses:
Income (loss) from discontinued operations, net of income taxes		$ (4,359)	$ 850	$ (3,556)	$ 426
Less: Net income (loss) from discontinued operations attributable to noncontrolling interests		93	198	477	81
Net income (loss) from discontinued operations attributable to AIG		(4,452)	652	(4,033)	345
Other investments	[1]	14,788		14,788		$ 6,368
Discontinued Operations
Benefits, losses and expenses:
Loss on disposition of operations, net of tax				(4,684)
Discontinued Operations | Corebridge Financial Inc
Revenues:
Premiums		428	2,442	2,723	4,548
Policy fees		555	693	1,269	1,392
Net investment income		2,314	2,732	5,238	5,420
Net realized gains (losses)		(587)	(281)	(923)	(1,680)
Other income		155	193	372	375
Total revenues		2,865	5,779	8,679	10,055
Benefits, losses and expenses:
Policyholder benefits and losses incurred		811	2,879	3,618	5,372
Change in the fair value of market risk benefits, net		20	(262)	(350)	(66)
Interest credited to policyholder account balances		980	1,063	2,184	2,102
Amortization of deferred policy acquisition costs		199	257	465	511
General operating and other expenses		574	772	1,350	1,512
Interest expense		106	149	249	331
Net (gain) loss on divestitures and other		(186)	(59)	(191)	(54)
Total benefits, losses and expenses		2,504	4,799	7,325	9,708
Income (loss) from discontinued operations before income tax expense (benefit) and loss on disposal of discontinued operations		361	980	1,354	347
Income tax expense (benefit)		36	130	226	(79)
Income (loss) from discontinued operations, net of income taxes before loss on disposal of discontinued operations		325	850	1,128	426
Loss on disposition of operations, net of tax		(4,684)	0	(4,684)	0
Income (loss) from discontinued operations, net of income taxes		(4,359)	850	(3,556)	426
Less: Net income (loss) from discontinued operations attributable to noncontrolling interests		93	198	477	81
Net income (loss) from discontinued operations attributable to AIG		$ (4,452)	$ 652	$ (4,033)	$ 345

[1] See Note 10 for details of balances associated with variable interest entities.