Schedule V. Valuation and Qualifying Accounts (Schedule of valuation and qualifying accounts) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Insurance and reinsurance receivables
Movement in valuation allowances and reserves [Roll Forward]
Balance at Beginning of Period	$ 47	$ 50	$ 51
Charged to Costs and Expenses	22	7	11
Charged to Other Accounts	1	0	0
Deductions	(18)	(10)	(12)
Balance at End of Period	52	47	50
Mortgage loan receivables
Movement in valuation allowances and reserves [Roll Forward]
Balance at Beginning of Period	35	35	24
Charged to Costs and Expenses	0	0	0
Charged to Other Accounts	5	0	11
Deductions	(25)	0	0
Balance at End of Period	15	35	35
Fixed maturity securities
Movement in valuation allowances and reserves [Roll Forward]
Balance at Beginning of Period	45	16	1
Charged to Costs and Expenses	0	0	0
Charged to Other Accounts	31	43	44
Deductions	(7)	(14)	(29)
Balance at End of Period	$ 69	$ 45	$ 16