v3.25.2
Segment and Geographic Information - Financial Information for Reportable Segments (Detail)
$ in Millions
 12 Months Ended
Mar. 31, 2025
USD ($)
segment
Mar. 31, 2024
USD ($)
Mar. 31, 2023
USD ($)
Segment Reporting Information [Line Items]      
Number of reportable segments | segment 2    
Revenues:      
Retail $ 2,748 $ 2,076 $ 1,468
Dealer 291 230 116
Operating leases 6,450 6,099 6,600
Total revenues 9,489 8,405 8,184
Leased vehicle expenses 4,390 4,340 4,891
Interest expense 2,445 1,703 887
Realized (gains)/losses on derivatives and foreign currency denominated debt 129 (141) (134)
Net revenues 2,525 2,503 2,540
Net revenues 2,654 2,362 2,406
Other income, net 159 128 92
Total net revenues 2,684 2,631 2,632
Expenses:      
General and administrative expenses 597 557 485
Provision for credit losses 306 301 146
Early termination loss on operating leases 136 100 38
Income before income taxes and valuation adjustments 1,645 1,673 1,963
Loss on derivative instruments (172) (19) (697)
Loss on foreign currency revaluation of debt (10) 25 410
Consolidated income before income taxes 1,592 1,538 1,542
Income tax expense 415 439 403
Assets      
Finance receivables, net 52,516 47,248 37,585
Investment in operating leases, net 30,596 27,378 27,778
Total assets 88,969 78,469 68,891
Operating Segments | United States      
Revenues:      
Retail 2,474 1,855 1,299
Dealer 268 206 104
Operating leases 5,634 5,192 5,535
Total revenues 8,376 7,253 6,938
Leased vehicle expenses 3,783 3,641 4,059
Interest expense 2,209 1,464 723
Realized (gains)/losses on derivatives and foreign currency denominated debt 141 (81) (92)
Net revenues 2,243 2,229 2,248
Other income, net 141 110 77
Total net revenues 2,384 2,339 2,325
Expenses:      
General and administrative expenses 542 503 430
Provision for credit losses 293 290 138
Early termination loss on operating leases 135 98 38
Income before income taxes and valuation adjustments 1,414 1,448 1,719
Income tax expense 365 385 338
Assets      
Finance receivables, net 47,493 42,419 33,518
Investment in operating leases, net 27,316 23,805 23,853
Total assets 80,254 69,722 60,556
Operating Segments | Canada      
Revenues:      
Retail 274 221 169
Dealer 23 24 12
Operating leases 816 907 1,065
Total revenues 1,113 1,152 1,246
Leased vehicle expenses 607 699 832
Interest expense 236 239 164
Realized (gains)/losses on derivatives and foreign currency denominated debt (12) (60) (42)
Net revenues 282 274 292
Other income, net 18 18 15
Total net revenues 300 292 307
Expenses:      
General and administrative expenses 55 54 55
Provision for credit losses 13 11 8
Early termination loss on operating leases 1 2 0
Income before income taxes and valuation adjustments 231 225 244
Income tax expense 50 54 65
Assets      
Finance receivables, net 5,023 4,829 4,067
Investment in operating leases, net 3,280 3,573 3,925
Total assets $ 8,715 $ 8,747 $ 8,335