Debt - Schedule of Outstanding Debt (Details) - USD ($) $ in Millions		Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Short term debt		$ 250	$ 1,500
Short-term and long-term debt		22,387	27,179
Collateral posted to third parties for derivative transactions		1,900	2,900
Consolidated Entities, Excluding Consolidated Investments
Debt Instrument [Line Items]
Short-term and long-term debt		19,796	21,299
Consolidated Investments, Including Variable Interest Entities, Primarily Beneficiary
Debt Instrument [Line Items]
Short-term and long-term debt	[1]	2,591	5,880
Unsecured Debt
Debt Instrument [Line Items]
Debt		10,338	11,775
Unsecured Debt | Notes and bonds payable
Debt Instrument [Line Items]
Debt		9,079	10,242
Unsecured Debt | Notes and bonds payable | Validus Holdings Ltd
Debt Instrument [Line Items]
Debt		0	269
Unsecured Debt | Junior subordinated debt
Debt Instrument [Line Items]
Debt		992	991
Unsecured Debt | Loans And Mortgages Payable
Debt Instrument [Line Items]
Debt		267	273
Secured Debt
Debt Instrument [Line Items]
Debt		37	99
Collateral posted to third parties for derivative transactions		63	63
Secured Debt | Notes and bonds payable | AIGFP Operating
Debt Instrument [Line Items]
Debt		18	18
Secured Debt | Notes and bonds payable | AIG
Debt Instrument [Line Items]
Debt		19	81
Secured Debt | Guaranteed Investment Agreements
Debt Instrument [Line Items]
Debt		53	56
Debt Issued Or Guaranteed
Debt Instrument [Line Items]
Debt		10,375	11,874
Corebridge Debt
Debt Instrument [Line Items]
Debt		9,368	9,368
Corebridge Debt | Notes and bonds payable
Debt Instrument [Line Items]
Debt		200	200
Corebridge Debt | Junior subordinated debt
Debt Instrument [Line Items]
Debt		$ 227	227
Debt Not Guaranteed | Junior subordinated debt
Debt Instrument [Line Items]
Interest rate (as a percent)		6.88%
Debt		$ 989	989
Debt Not Guaranteed | Corebridge senior unsecured notes
Debt Instrument [Line Items]
Debt		7,702	6,452
Debt Not Guaranteed | DDTL Facility
Debt Instrument [Line Items]
Short term debt		250	1,500
Debt Not Guaranteed | Other subsidiaries notes, bonds, loans and mortgages payable
Debt Instrument [Line Items]
Debt		0	1
Debt Not Guaranteed | Debt Of Consolidated Investments | Real Estate and Investment Entities
Debt Instrument [Line Items]
Debt		1,500	1,500
Debt Not Guaranteed | Debt Of Consolidated Investments | Other VIE
Debt Instrument [Line Items]
Debt		$ 1,100	$ 4,400
Minimum | Unsecured Debt | Notes and bonds payable
Debt Instrument [Line Items]
Interest rate (as a percent)		0.00%
Minimum | Unsecured Debt | Junior subordinated debt
Debt Instrument [Line Items]
Interest rate (as a percent)		4.88%
Minimum | Unsecured Debt | Loans And Mortgages Payable
Debt Instrument [Line Items]
Interest rate (as a percent)		0.27%
Minimum | Secured Debt | Notes and bonds payable | AIGFP Operating
Debt Instrument [Line Items]
Interest rate (as a percent)		0.00%
Minimum | Secured Debt | Notes and bonds payable | AIG
Debt Instrument [Line Items]
Interest rate (as a percent)		7.00%
Minimum | Secured Debt | Guaranteed Investment Agreements
Debt Instrument [Line Items]
Interest rate (as a percent)		4.88%
Minimum | Corebridge Debt | Notes and bonds payable
Debt Instrument [Line Items]
Interest rate (as a percent)		6.63%
Minimum | Corebridge Debt | Junior subordinated debt
Debt Instrument [Line Items]
Interest rate (as a percent)		7.57%
Minimum | Debt Not Guaranteed | Corebridge senior unsecured notes
Debt Instrument [Line Items]
Interest rate (as a percent)		3.50%
Minimum | Debt Not Guaranteed | DDTL Facility
Debt Instrument [Line Items]
Interest rate (as a percent)		3.00%
Minimum | Debt Not Guaranteed | Debt Of Consolidated Investments
Debt Instrument [Line Items]
Interest rate (as a percent)		0.00%
Maximum | Unsecured Debt | Notes and bonds payable
Debt Instrument [Line Items]
Interest rate (as a percent)		6.82%
Maximum | Unsecured Debt | Junior subordinated debt
Debt Instrument [Line Items]
Interest rate (as a percent)		8.18%
Maximum | Unsecured Debt | Loans And Mortgages Payable
Debt Instrument [Line Items]
Interest rate (as a percent)		0.35%
Maximum | Secured Debt | Notes and bonds payable | AIGFP Operating
Debt Instrument [Line Items]
Interest rate (as a percent)		5.48%
Maximum | Secured Debt | Notes and bonds payable | AIG
Debt Instrument [Line Items]
Interest rate (as a percent)		8.13%
Maximum | Secured Debt | Guaranteed Investment Agreements
Debt Instrument [Line Items]
Interest rate (as a percent)		5.04%
Maximum | Corebridge Debt | Notes and bonds payable
Debt Instrument [Line Items]
Interest rate (as a percent)		7.50%
Maximum | Corebridge Debt | Junior subordinated debt
Debt Instrument [Line Items]
Interest rate (as a percent)		8.50%
Maximum | Debt Not Guaranteed | Corebridge senior unsecured notes
Debt Instrument [Line Items]
Interest rate (as a percent)		6.05%
Maximum | Debt Not Guaranteed | DDTL Facility
Debt Instrument [Line Items]
Interest rate (as a percent)		5.50%
Maximum | Debt Not Guaranteed | Debt Of Consolidated Investments
Debt Instrument [Line Items]
Interest rate (as a percent)		4.45%

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