|**OPERATING LEASE ASSETS, NET (Tables)**                                            | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
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|**Leases [Abstract]**                                                               |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Summary of Operating Lease Assets, Net                                              | Operating lease assets, net consisted of the following as of the periods indicated:(in thousands)June 30, 2023December 31, 2022Leased vehicles$18,056,200$18,241,836Less: accumulated depreciation(3,711,855)(3,699,350)Depreciated net capitalized cost$14,344,345$14,542,486Manufacturer subvention payments, net of accretion(521,863)(447,009)Origination fees and other costs253,494170,435Leased vehicles, net$14,075,976$14,265,912Commercial equipment vehicles and aircraft, gross$—$2,221Less: accumulated depreciation—(1,022)Commercial equipment vehicles and aircraft, net$—$1,199Total operating lease assets, net$14,075,976$14,267,111
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|(in thousands)                                                                      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
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|Leased vehicles                                                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Less: accumulated depreciation                                                      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Depreciated net capitalized cost                                                    |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Manufacturer subvention payments, net of accretion                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Origination fees and other costs                                                    |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Leased vehicles, net                                                                |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|                                                                                    |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Commercial equipment vehicles and aircraft, gross                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Less: accumulated depreciation                                                      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Commercial equipment vehicles and aircraft, net                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
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|Total operating lease assets, net                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Summary of Future Minimum Rental Payments Due to the Company Under Operating Leases | The following summarizes the future minimum rental payments due to the Company as lessor under operating leases as of June 30, 2023 (in thousands):2023$1,180,75620241,632,9162025852,2272026193,23020271,456Total$3,860,585                                                                                                                                                                                                                                                                                                                                                                                                                           
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|2023                                                                                |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|2024                                                                                |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|2025                                                                                |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|2026                                                                                |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|2027                                                                                |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
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|Total                                                                               |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        

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