Receivables (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Receivables [Abstract]
Reinsurance (Note 16)	$ 6,408	$ 6,072
Insurance	3,764	3,697
Receivable from brokers	58	50
Accrued investment income	485	458
Income taxes	3	9
Other, primarily customer accounts	318	284
Total	11,036	10,570
Less: allowance for doubtful accounts on reinsurance receivables	27	21
Less: allowance for other doubtful accounts	26	27
Receivables	$ 10,983	$ 10,522