v3.25.4
Schedule IV (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]      
Direct $ 31,463 $ 31,208 $ 30,781
Ceded Premiums Earned 11,459 11,618 12,267
Assumed 3,747 3,947 7,050
Premiums $ 23,751 $ 23,537 $ 25,564
Percent of Amount Assumed to Net 15.80% 16.80% 27.60%
Accident and health      
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]      
Direct $ 2,535 $ 2,507 $ 2,612
Ceded Premiums Earned 108 104 107
Assumed 35 30 35
Premiums $ 2,462 $ 2,433 $ 2,540
Percent of Amount Assumed to Net 1.40% 1.20% 1.40%
Property and liability      
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]      
Direct $ 28,928 $ 28,701 $ 28,169
Ceded Premiums Earned 11,351 11,514 12,160
Assumed 3,712 3,917 7,015
Premiums $ 21,289 $ 21,104 $ 23,024
Percent of Amount Assumed to Net 17.40% 18.60% 30.50%