Debt - Maturity of Debt (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Total	$ 8,922	$ 10,606
Consolidated Entities, Excluding Consolidated Investments
Debt Instrument [Line Items]
Total	8,764	10,375
2025	398
2026	272
2027	848
2028	830
2029	257
Thereafter	6,159
Nonrecourse
Debt Instrument [Line Items]
Total	158
Unsecured Debt
Debt Instrument [Line Items]
Total	8,726
2025	385
2026	265
2027	848
2028	830
2029	257
Thereafter	6,141
Secured Debt
Debt Instrument [Line Items]
Total	37
2025	12
2026	7
2027	0
2028	0
2029	0
Thereafter	18
Notes And Bonds Payable \| Unsecured Debt
Debt Instrument [Line Items]
Total	7,885
2025	146
2026	265
2027	848
2028	830
2029	257
Thereafter	5,539
Junior Subordinated Debt, General Borrowing \| Unsecured Debt
Debt Instrument [Line Items]
Total	602
2025	0
2026	0
2027	0
2028	0
2029	0
Thereafter	602
AIG Japan Holdings Kabushiki Kaisha \| Unsecured Debt
Debt Instrument [Line Items]
Total	239
2025	239
2026	0
2027	0
2028	0
2029	0
Thereafter	0
Debt Not Guaranteed \| Other subsidiaries notes, bonds, loans and mortgages payable
Debt Instrument [Line Items]
Total	1	$ 0
2025	1
2026	0
2027	0
2028	0
2029	0
Thereafter	$ 0

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