Schedule II - Cash Flow Statement (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023		Dec. 31, 2022		Dec. 31, 2021	Dec. 31, 2020
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	$ 6,243		$ 4,134		$ 6,223
Cash flows from investing activities:
Sales and maturities of investments	2,328		2,891		6,258
Sales of divested businesses	3,315		0		4,683
Other, net	(1,320)		(443)		(995)
Net cash used in investing activities	(7,021)		(3,626)		(3,280)
Cash flows from financing activities:
Issuance of long-term debt	1,982		7,477		107
Repayments of debt	(2,304)		(9,455)		(4,147)
Cash dividends paid on preferred stock	(29)		(29)		(29)
Cash dividends paid on common stock	(997)		(982)		(1,083)
Purchase of common stock	(2,961)		(5,200)		(2,592)
Other, net	1,664		545		1,222
Net cash provided by (used in) financing activities	782		(602)		(3,679)
Cash and restricted cash at beginning of year	2,216		2,427
Cash and restricted cash at end of year	2,204		2,216		2,427
Supplementary Disclosure of Condensed Consolidated Cash Flow Information
Cash	2,155	[1]	2,043	[1]	2,198
Restricted cash included in Other assets*	45	[2]	33	[2]	32
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations	2,204		2,216		2,427	$ 3,230
Total cash and restricted cash shown in the Consolidated Statements of Cash Flows	2,204		2,216		2,427
Interest	1,059		1,127		1,348
Taxes	984		746		862
Short-term investments, at cost (approximates fair value)
Supplementary Disclosure of Condensed Consolidated Cash Flow Information
Restricted cash	4		140
Other assets
Supplementary Disclosure of Condensed Consolidated Cash Flow Information
Restricted cash	45		33
Parent Company
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	5,382		191		3,837
Cash flows from investing activities:
Sales and maturities of investments	3,367		5,205		4,228
Purchase of investments	(2,070)		(90)		(5,761)
Net change in short-term investments	(4,393)		945		2,647
Contributions from (to) subsidiaries - net	(47)		(330)		403
Loans to subsidiaries - net	84		8,427		(104)
Other, net	(48)		45		(41)
Net cash used in investing activities	(3,107)		14,202		1,372
Cash flows from financing activities:
Issuance of long-term debt	742		0		0
Repayments of debt	(2,037)		(9,364)		(3,703)
Cash dividends paid on preferred stock	(29)		(29)		(29)
Cash dividends paid on common stock	(997)		(982)		(1,083)
Loans from subsidiaries - net	(97)		(224)		3
Purchase of common stock	(2,961)		(5,200)		(2,598)
Other, net	3,108		1,408		2,201
Net cash provided by (used in) financing activities	(2,271)		(14,391)		(5,209)
Change in cash and restricted cash	4		2		0
Cash and restricted cash at beginning of year	6		4		4
Cash and restricted cash at end of year	10		6		4
Supplementary Disclosure of Condensed Consolidated Cash Flow Information
Cash	10		5		3
Restricted cash included in Other assets*	0		1		1
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations	10		6		4
Total cash and restricted cash shown in the Consolidated Statements of Cash Flows	10		6		4	$ 4
Interest	(455)		(716)		(941)
Intercompany	(3)		63		1
Taxes	(109)		(348)		(494)
Intercompany	(95)		1,120		1,950
Intercompany non-cash financing and investing activities:
Capital contributions	861		660		2,284
Return of capital	0		0		1,365
Dividend received in the form of intercompany note	0		0		8,300
Dividends received in the form of securities	$ 314		$ 494		$ 1,289

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

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