v3.25.2
Related Party Transactions - Aircraft Time Sharing Agreement (Details) - Related Party - Aircraft Time Sharing Agreement - Air Transportation Equipment
$ in Millions
3 Months Ended 6 Months Ended
Oct. 22, 2015
aircraft
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
DriveTime Automotive Group, Inc.          
Related Party Transaction [Line Items]          
Contractual agreement term 12 months        
Contractual agreement, perpetual automatic renewal 12 months        
Number of allowable days prior to contract termination with written notice 30 days        
Verde Investments, Inc.          
Related Party Transaction [Line Items]          
Reimbursement expense (less than) | $   $ 1 $ 1 $ 1 $ 1
Verde Investments, Inc. | DriveTime Automotive Group, Inc.          
Related Party Transaction [Line Items]          
Number of aircrafts | aircraft 2