v3.26.3
Related Party Transactions - Office Leases (Details) - DriveTime Automotive Group, Inc.
$ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Dec. 31, 2019
renewalOption
Sep. 30, 2026
USD ($)
Sep. 30, 2025
USD ($)
Sep. 30, 2026
USD ($)
Sep. 30, 2025
USD ($)
Related Party Transaction [Line Items]          
Rent expense (less than) | $   $ 1 $ 1 $ 1 $ 1
Office Building Lease | Related Party | Tempe, Arizona          
Related Party Transaction [Line Items]          
Operating lease term 10 years        
Operating lease, number of renewal options | renewalOption 2        
Operating leases, renewal term 5 years