XML 71 R50.htm IDEA: XBRL DOCUMENT
v3.21.1

Auto Loan Receivables (Past Due Receivables) (Details) - USD ($) $ in Millions | Feb. 28, 2021 | Feb. 29, 2020
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Total ending managed receivables | $ 13,847.2 | $ 13,617.8
Total past due | $ 392.5 | $ 468.9
Past due receivables as a percentage of total ending managed receivables | 2.83% | 3.44%
Financing Receivable, before Allowance for Credit Loss, Current | $ 13,454.7 |
Credit Grade A [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending managed receivables | 6,874.1 | $ 6,915.9
Total past due | 26.9 |
Financing Receivable, before Allowance for Credit Loss, Current | 6,847.2 |
Credit Grade B |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending managed receivables | 5,008.9 | 4,841.2
Total past due | 168.6 |
Financing Receivable, before Allowance for Credit Loss, Current | 4,840.3 |
Credit Grade C And Other |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending managed receivables | 1,964.2 | $ 1,860.7
Total past due | 197.0 |
Financing Receivable, before Allowance for Credit Loss, Current | $ 1,767.2 |
Managed Receivables |  |
Financing Receivable, Past Due [Line Items] |  |
Item as percent of total ending managed receivables | 100.00% | 100.00%
Thirty One To Sixty Days Past Due [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due | $ 246.2 | $ 296.4
Past due receivables as a percentage of total ending managed receivables | 1.78% | 2.18%
Thirty One To Sixty Days Past Due [Member] | Credit Grade A [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due | $ 17.3 |
Thirty One To Sixty Days Past Due [Member] | Credit Grade B |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due | 108.9 |
Thirty One To Sixty Days Past Due [Member] | Credit Grade C And Other |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due | 120.0 |
Sixty One To Ninety Days Past Due [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due | $ 119.9 | $ 138.3
Past due receivables as a percentage of total ending managed receivables | 0.86% | 1.01%
Sixty One To Ninety Days Past Due [Member] | Credit Grade A [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due | $ 7.0 |
Sixty One To Ninety Days Past Due [Member] | Credit Grade B |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due | 48.4 |
Sixty One To Ninety Days Past Due [Member] | Credit Grade C And Other |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due | 64.5 |
Greater Than Ninety Days Past Due [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due | $ 26.4 | $ 34.2
Past due receivables as a percentage of total ending managed receivables | 0.19% | 0.25%
Greater Than Ninety Days Past Due [Member] | Credit Grade A [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due | $ 2.6 |
Greater Than Ninety Days Past Due [Member] | Credit Grade B |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due | 11.3 |
Greater Than Ninety Days Past Due [Member] | Credit Grade C And Other |  |
Financing Receivable, Past Due [Line Items] |  |
Total past due | $ 12.5 |
Financial Asset, 1 to 29 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due receivables as a percentage of total ending managed receivables | 97.17% |

X
- Definition Item as percent of total ending managed receivables + References No definition available. + Details
Name: | kmx_ItemAsPercentOfTotalEndingManagedReceivables
Namespace Prefix: | kmx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Past due receivables as a percentage of total ending managed receivables. + References No definition available. + Details
Name: | kmx_PastDueReceivablesAsPercentageOfTotalEndingManagedReceivables
Namespace Prefix: | kmx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of financing receivable past due. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 80 -URI http://asc.fasb.org/extlink&oid=121647567&loc=SL82922355-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919253-210447 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953401-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentPastDue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, before allowance for credit loss, of financing receivable, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=121566466&loc=d3e6676-107765 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121566466&loc=d3e6676-107765 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=121593590&loc=d3e4531-111522 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121566466&loc=d3e6676-107765 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3(a),(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_NotesAndLoansReceivableGrossCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, before allowance for credit loss, of financing receivable. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=121647567&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919230-210447 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 80 -URI http://asc.fasb.org/extlink&oid=121647567&loc=SL82922355-210448 + Details
Name: | us-gaap_NotesReceivableGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=kmx_CreditGradeAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=kmx_CreditGradeBMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=kmx_CreditGradeCAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=kmx_ManagedReceivablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=kmx_ThirtyOneToSixtyDaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=kmx_SixtyOneToNinetyDaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=kmx_GreaterThanNinetyDaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables1To29DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |