v3.26.3
Reinsurance and Indemnification - Schedule of Effects of Reinsurance Ceded and Indemnification Programs on Property and Casualty Premiums Earned and Accident and Health Insurance Premiums and Contract Charges (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Property and casualty insurance premiums earned        
Reinsurance        
Property and casualty insurance premiums earned $ (657) $ (640) $ (1,951) $ (1,791)
Accident and health insurance premiums and contract charges        
Reinsurance        
Accident and health insurance premiums and contract charges $ (123) $ (122) $ (379) $ (145)