Investments (Fixed Maturity Securities by Sector) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Fixed maturity securities, amortized cost	$ 85,907	$ 86,565
Fixed maturity securities, allowance for credit losses	62	79	$ 21
Fixed maturity securities, gross unrealized gains	951	491
Fixed maturity securities, gross unrealized losses	5,836	7,848
Fixed maturity securities, at estimated fair value	80,960	79,129
U.S. corporate
Debt Securities, Available-for-sale [Line Items]
Fixed maturity securities, amortized cost	41,030	40,437
Fixed maturity securities, allowance for credit losses	27	47	15
Fixed maturity securities, gross unrealized gains	437	212
Fixed maturity securities, gross unrealized losses	3,031	3,865
Fixed maturity securities, at estimated fair value	38,409	36,737
Foreign corporate
Debt Securities, Available-for-sale [Line Items]
Fixed maturity securities, amortized cost	12,311	13,203
Fixed maturity securities, allowance for credit losses	31	26	0
Fixed maturity securities, gross unrealized gains	145	53
Fixed maturity securities, gross unrealized losses	991	1,468
Fixed maturity securities, at estimated fair value	11,434	11,762
RMBS
Debt Securities, Available-for-sale [Line Items]
Fixed maturity securities, amortized cost	8,967	8,056
Fixed maturity securities, allowance for credit losses	3	4	4
Fixed maturity securities, gross unrealized gains	83	45
Fixed maturity securities, gross unrealized losses	571	867
Fixed maturity securities, at estimated fair value	8,476	7,230
U.S. government and agency
Debt Securities, Available-for-sale [Line Items]
Fixed maturity securities, amortized cost	6,942	7,112
Fixed maturity securities, allowance for credit losses	0	0
Fixed maturity securities, gross unrealized gains	104	39
Fixed maturity securities, gross unrealized losses	601	691
Fixed maturity securities, at estimated fair value	6,445	6,460
ABS
Debt Securities, Available-for-sale [Line Items]
Fixed maturity securities, amortized cost	6,054	6,348
Fixed maturity securities, allowance for credit losses	0	0
Fixed maturity securities, gross unrealized gains	33	33
Fixed maturity securities, gross unrealized losses	56	75
Fixed maturity securities, at estimated fair value	6,031	6,306
CMBS
Debt Securities, Available-for-sale [Line Items]
Fixed maturity securities, amortized cost	6,009	6,702
Fixed maturity securities, allowance for credit losses	1	2	$ 2
Fixed maturity securities, gross unrealized gains	14	7
Fixed maturity securities, gross unrealized losses	222	415
Fixed maturity securities, at estimated fair value	5,800	6,292
State and political subdivision
Debt Securities, Available-for-sale [Line Items]
Fixed maturity securities, amortized cost	3,620	3,671
Fixed maturity securities, allowance for credit losses	0	0
Fixed maturity securities, gross unrealized gains	100	78
Fixed maturity securities, gross unrealized losses	297	367
Fixed maturity securities, at estimated fair value	3,423	3,382
Foreign government
Debt Securities, Available-for-sale [Line Items]
Fixed maturity securities, amortized cost	974	1,036
Fixed maturity securities, allowance for credit losses	0	0
Fixed maturity securities, gross unrealized gains	35	24
Fixed maturity securities, gross unrealized losses	67	100
Fixed maturity securities, at estimated fair value	$ 942	$ 960

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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