Investment Income, Interest and Dividend, Income (Loss)

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- Definition

Amount of realized gain (loss) from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of increase (decrease) of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of dividend income on nonoperating securities.

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- Definition

Amount of expenses related to the generation of investment income.

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- Definition

Amount, after investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Investments - Components of Net Investment Income (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2026	Mar. 31, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Net Investment Income [Line Items]
Total investment income	$ 1,143		$ 810	$ 3,064	$ 3,458
Investment expenses	43		38	125	115
Net investment income	1,100		772	2,939	3,343
Gain/loss on sale of AIG's remaining interest	38		(63)	(5)	(29)
Change in fair value of equity method investment	(3)		(288)	(67)	393
Excluding Fortitude Re Funds Withheld Assets
Net Investment Income [Line Items]
Total investment income	1,127		781	2,989	3,350
Investment expenses	43		38	125	115
Net investment income	1,084		743	2,864	3,235
Fortitude Re Funds Withheld Assets
Net Investment Income [Line Items]
Total investment income	16		29	75	108
Investment expenses	0		0	0	0
Net investment income	16		29	75	108
Corebridge Financial Inc
Net Investment Income [Line Items]
Gain/loss on sale of AIG's remaining interest				103
Dividend income		$ 6	20		78
Change in fair value of equity method investment		$ (154)	(348)		316
Available for sale fixed maturity securities, including short-term investments
Net Investment Income [Line Items]
Total investment income	959		886	2,795	2,590
Available for sale fixed maturity securities, including short-term investments \| Excluding Fortitude Re Funds Withheld Assets
Net Investment Income [Line Items]
Total investment income	939		873	2,735	2,539
Available for sale fixed maturity securities, including short-term investments \| Fortitude Re Funds Withheld Assets
Net Investment Income [Line Items]
Total investment income	20		13	60	51
Other fixed maturity securities
Net Investment Income [Line Items]
Total investment income	(8)		11	2	38
Other fixed maturity securities \| Excluding Fortitude Re Funds Withheld Assets
Net Investment Income [Line Items]
Total investment income	0		0	1	0
Other fixed maturity securities \| Fortitude Re Funds Withheld Assets
Net Investment Income [Line Items]
Total investment income	(8)		11	1	38
Equity securities
Net Investment Income [Line Items]
Total investment income	2		62	99	85
Gain/loss on sale of AIG's remaining interest	29		2	148	3
Equity securities \| Excluding Fortitude Re Funds Withheld Assets
Net Investment Income [Line Items]
Total investment income	2		62	99	85
Equity securities \| Fortitude Re Funds Withheld Assets
Net Investment Income [Line Items]
Total investment income	0		0	0	0
Interest on mortgage and other loans
Net Investment Income [Line Items]
Total investment income	31		46	102	150
Interest on mortgage and other loans \| Excluding Fortitude Re Funds Withheld Assets
Net Investment Income [Line Items]
Total investment income	27		40	89	130
Interest on mortgage and other loans \| Fortitude Re Funds Withheld Assets
Net Investment Income [Line Items]
Total investment income	4		6	13	20
Alternative investments
Net Investment Income [Line Items]
Total investment income	92		137	115	228
Alternative investments \| Excluding Fortitude Re Funds Withheld Assets
Net Investment Income [Line Items]
Total investment income	92		137	115	228
Alternative investments \| Fortitude Re Funds Withheld Assets
Net Investment Income [Line Items]
Total investment income	0		0	0	0
Other investments
Net Investment Income [Line Items]
Total investment income	67		(332)	(49)	367
Other investments \| Excluding Fortitude Re Funds Withheld Assets
Net Investment Income [Line Items]
Total investment income	67		(331)	(50)	368
Other investments \| Fortitude Re Funds Withheld Assets
Net Investment Income [Line Items]
Total investment income	$ 0		$ (1)	$ 1	$ (1)