v3.25.2
Non-Insurance Revenues from Contracts with Customers (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Revenue from Contract with Customer [Abstract]          
Deferred non-insurance warranty revenue $ 4,421   $ 4,421   $ 4,530
Contract with customer, liability, revenue recognized $ 300 $ 400 $ 600 $ 700