v3.25.2
Related Party Transactions - Servicing and Administrative Fees (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
DriveTime Automotive Group, Inc. | Servicing and Administrative Fees | Related Party        
Related Party Transaction [Line Items]        
General and administrative expense $ 1 $ 3 $ 3 $ 5