Investments - Realized Investment Gains and Losses and Change in Unrealized Investment Gains and Losses and Other Items (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Investment income:
Interest	$ 227	$ 187	$ 651	$ 529
Dividends	69	68	206	209
Other	4	7	16	18
Total	300	262	873	756
Less investment expenses	5	4	13	11
Total	295	258	860	745
Investment gains and losses, net
Other	6	3	18	29
Total	853	758	1,259	1,507
Equity securities
Investment gains and losses, net
Investment gains and losses on securities sold, net	(9)	24	(5)	146
Unrealized gains and losses on securities still held, net	855	817	1,259	1,446
Total	846	841	1,254	1,592
Fixed maturities
Investment gains and losses, net
Gross realized gains	2	1	3	5
Gross realized losses	(1)	(87)	(1)	(94)
Change in allowance for credit losses, net	0	0	(15)	(25)
Total	$ 1	$ (86)	$ (13)	$ (114)

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Amount, before 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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