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CarMax Auto Finance (Components Of CarMax Auto Finance Income) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Nov. 30, 2021 | Nov. 30, 2020 | Nov. 30, 2021 | Nov. 30, 2020
Auto Finance Income [Line Items] |  |  |  |
Interest and fee income | $ 330,000 | $ 288,500 | $ 964,400 | $ 851,100
Interest expense | (53,600) | (77,100) | (180,000) | (243,000)
Total interest margin | 276,400 | 211,400 | 784,400 | 608,100
Provision for loan losses | (76,200) | (8,200) | (87,300) | (156,100)
Total interest margin after provision for loan losses | 200,200 | 203,200 | 697,100 | 452,000
Total other expense | 0 | 0 | 0 | (2,200)
Payroll and fringe benefit expense | (12,700) | (11,600) | (37,700) | (34,200)
Other Depreciation and Amortization | (2,400) | (200) | (2,800) | (600)
Other direct expenses | (19,200) | (15,000) | (48,900) | (40,400)
Total direct expenses | (34,300) | (26,800) | (89,400) | (75,200)
CarMax Auto Finance income | 165,968 | 176,445 | 607,732 | 374,590
Total average managed receivables | $ 15,288,800 | $ 13,517,500 | $ 14,706,900 | $ 13,381,600
Interest and fee income, percent |  |  |  |
Auto Finance Income [Line Items] |  |  |  |
Item as percent of total average managed receivables | 8.60% | 8.50% | 8.70% | 8.50%
Interest expense, percent |  |  |  |
Auto Finance Income [Line Items] |  |  |  |
Item as percent of total average managed receivables | (1.40%) | (2.30%) | (1.60%) | (2.40%)
Total interest margin, percent |  |  |  |
Auto Finance Income [Line Items] |  |  |  |
Item as percent of total average managed receivables | 7.20% | 6.30% | 7.10% | 6.10%
Provision for loan losses, percent |  |  |  |
Auto Finance Income [Line Items] |  |  |  |
Item as percent of total average managed receivables | (2.00%) | (0.20%) | (0.80%) | (1.60%)
Total interest margin after provision for loan losses, percent |  |  |  |
Auto Finance Income [Line Items] |  |  |  |
Item as percent of total average managed receivables | 5.20% | 6.00% | 6.30% | 4.50%
Total other expense, percent |  |  |  |
Auto Finance Income [Line Items] |  |  |  |
Item as percent of total average managed receivables | 0.00% | 0.00% | 0.00% | 0.00%
Payroll and fringe benefit expense, percent |  |  |  |
Auto Finance Income [Line Items] |  |  |  |
Item as percent of total average managed receivables | (0.30%) | (0.30%) | (0.30%) | (0.30%)
Other Depreciation and Amortization |  |  |  |
Auto Finance Income [Line Items] |  |  |  |
Item as percent of total average managed receivables | (0.10%) | 0.00% | 0.00% | 0.00%
Other direct expenses, percent |  |  |  |
Auto Finance Income [Line Items] |  |  |  |
Item as percent of total average managed receivables | (0.50%) | (0.40%) | (0.40%) | (0.40%)
Total direct expenses, percent |  |  |  |
Auto Finance Income [Line Items] |  |  |  |
Item as percent of total average managed receivables | (0.90%) | (0.80%) | (0.80%) | (0.70%)
CarMax Auto Finance income, percent |  |  |  |
Auto Finance Income [Line Items] |  |  |  |
Item as percent of total average managed receivables | 4.30% | 5.20% | 5.50% | 3.70%

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