v3.26.3
Segment Reporting - Schedule of Operations Reporting by Revenue (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Segment Reporting [Abstract]        
Number of reportable segments disclosed by definition     North America and International  
Segment Reporting [Line Items]        
Revenues $ 4,312 $ 4,337 $ 12,854 $ 12,755
Costs and expenses        
(Gain) loss on termination of leased vehicles     463 494
Provision for loan losses 340 244 996 926
Interest expense 1,558 1,651 4,638 4,886
Equity income 8 9 35 37
Income before income taxes 668 804 1,962 2,193
Reportable Segments        
Segment Reporting [Line Items]        
Revenues 4,273 4,322 12,761 12,720
Costs and expenses        
Income before income taxes 699 824 2,039 2,244
North America        
Segment Reporting [Line Items]        
Revenues 3,759 3,901 11,256 11,531
Costs and expenses        
Salaries and benefits 269 258 801 781
Leased vehicle depreciation 1,207 1,216 3,802 3,616
(Gain) loss on termination of leased vehicles (142) (148) (475) (495)
Provision for loan losses 260 202 804 808
Interest expense 1,336 1,464 4,011 4,350
GM Protection claims losses 23 17 61 39
Other segment items 174 140 484 413
Equity income 0 0 0 0
Income before income taxes 632 753 1,769 2,018
International        
Segment Reporting [Line Items]        
Revenues 515 421 1,505 1,189
Costs and expenses        
Salaries and benefits 46 40 134 116
Leased vehicle depreciation 28 22 81 60
(Gain) loss on termination of leased vehicles 5 2 12 2
Provision for loan losses 80 42 192 118
Interest expense 222 187 627 536
GM Protection claims losses 0 0 0 0
Other segment items 75 67 224 168
Equity income 8 9 35 37
Income before income taxes 68 71 271 227
Other Operating Segment        
Segment Reporting [Line Items]        
Revenues 38 14 93 35
Costs and expenses        
Income before income taxes $ (31) $ (20) $ (77) $ (52)