v3.26.1
Auto Loan Receivables (Ending Managed Receivables By Major Credit Grade) (Details) - USD ($)
$ in Millions
 12 Months Ended
Feb. 28, 2026
Feb. 28, 2025
Financing Receivable, By Major Credit Grade [Line Items]    
Auto loans held for investment $ 16,271.9 $ 17,594.6
Total ending managed receivables as percentage by major credit grade 100.00% 100.00%
Financing Receivable, Year One, Originated, Current Fiscal Year $ 6,125.8 $ 6,907.1
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 4,388.2 4,726.0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 2,940.4 3,278.3
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 1,824.2 1,929.3
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 842.0 593.6
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 151.3 160.3
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff 42.9 44.7
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff 153.7 193.2
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff 183.5 196.2
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff 152.5 107.2
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff 78.3 30.3
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff 25.2 17.6
Financing Receivable, Allowance for Credit Loss, Writeoff 636.1 589.2
Tier 1 managed receivables    
Financing Receivable, By Major Credit Grade [Line Items]    
Auto loans held for investment $ 15,721.5 $ 16,930.3
Total ending managed receivables as percentage by major credit grade 96.60% 96.20%
Financing Receivable, Year One, Originated, Current Fiscal Year $ 5,942.1 $ 6,595.2
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 4,216.2 4,548.9
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 2,832.3 3,161.4
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 1,762.9 1,883.0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 819.8 588.2
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 148.2 153.6
Financing Receivable, Allowance for Credit Loss, Writeoff 540.8 494.7
Tier 2 & Tier 3 managed receivables    
Financing Receivable, By Major Credit Grade [Line Items]    
Financing Receivable, Allowance for Credit Loss, Writeoff 95.3 94.5
Credit Grade A [Member] | Tier 1 managed receivables    
Financing Receivable, By Major Credit Grade [Line Items]    
Auto loans held for investment $ 9,473.9 $ 9,600.7
Total ending managed receivables as percentage by major credit grade 58.20% 54.50%
Financing Receivable, Year One, Originated, Current Fiscal Year $ 3,871.5 $ 4,132.0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 2,738.1 2,607.9
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 1,578.8 1,673.9
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 887.9 894.1
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 352.4 243.9
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 45.2 48.9
Credit Grade B | Tier 1 managed receivables    
Financing Receivable, By Major Credit Grade [Line Items]    
Auto loans held for investment $ 5,056.8 $ 5,929.1
Total ending managed receivables as percentage by major credit grade 31.10% 33.70%
Financing Receivable, Year One, Originated, Current Fiscal Year $ 1,643.7 $ 2,041.1
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 1,233.9 1,664.0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 1,075.2 1,163.0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 687.0 746.4
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 352.0 244.9
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 65.0 69.7
Credit Grade C And Other | Tier 1 managed receivables    
Financing Receivable, By Major Credit Grade [Line Items]    
Auto loans held for investment $ 1,190.8 $ 1,400.5
Total ending managed receivables as percentage by major credit grade 7.30% 8.00%
Financing Receivable, Year One, Originated, Current Fiscal Year $ 426.9 $ 422.1
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 244.2 277.0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 178.3 324.5
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 188.0 242.5
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 115.4 99.4
Financing Receivable, Originated, More than Five Years before Current Fiscal Year 38.0 35.0
Credit Grade C And Other | Tier 2 & Tier 3 managed receivables    
Financing Receivable, By Major Credit Grade [Line Items]    
Auto loans held for investment $ 550.4 $ 664.3
Total ending managed receivables as percentage by major credit grade 3.40% 3.80%
Financing Receivable, Year One, Originated, Current Fiscal Year $ 183.7 $ 311.9
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year 172.0 177.1
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year 108.1 116.9
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year 61.3 46.3
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year 22.2 5.4
Financing Receivable, Originated, More than Five Years before Current Fiscal Year $ 3.1 $ 6.7