XML 29 R47.htm IDEA: XBRL DOCUMENT v2.4.0.8

Debt (Narrative) (Details) (USD $)			6 Months Ended		6 Months Ended	3 Months Ended	6 Months Ended				6 Months Ended
	Aug. 31, 2014	Feb. 28, 2014	Aug. 31, 2014 Revolving Credit Facility [Member]	Aug. 31, 2014 Warehouse Facilities [Member]	Aug. 31, 2014 Term Securitizations Debt [Member]	Aug. 31, 2014 Warehouse Facility One [Member] Warehouse Facilities [Member]	Aug. 31, 2014 Warehouse Facility One [Member] Warehouse Facilities [Member]	Aug. 31, 2014 Warehouse Facility Two [Member] Warehouse Facilities [Member]	Jul. 02, 2014 Warehouse Facility Two [Member] Warehouse Facilities [Member]	Aug. 31, 2014 Previously Reported [Member] Warehouse Facility One [Member] Warehouse Facilities [Member]	Aug. 31, 2014 Minimum [Member] Finance And Capital Lease Obligation [Member]	Aug. 31, 2014 Maximum [Member] Finance And Capital Lease Obligation [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity of revolving credit facility			$ 700,000,000
Warehouse Facility Additional Limit									300,000,000
Revolving credit facility, expiration date			Aug. 01, 2016
Revolving Credit Facility, Remaining Borrowing Capacity			698,000,000
Initial lease terms, in years											15 years	20 years
Debt maturity, end					Feb. 01, 2021
Non-recourse notes payable	7,910,000,000	7,250,000,000		1,040,000,000	6,860,000,000
Warehouse facilities maximum borrowing capacity				2,100,000,000		800,000,000	800,000,000	1,300,000,000		800,000,000
Remaining borrowing capacity				$ 1,060,000,000
Warehouse facility expiration date						Jul. 01, 2015		Feb. 01, 2015
Warehouse facility additional term of facility, days							364 days

X

- Definition

Initial Lease Terms.

+ References

No definition available.

+ Details

Name:	kmx_InitialLeaseTerms
Namespace Prefix:	kmx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Maximum borrowing capacity under all warehouse facilities without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facilities.

+ References

No definition available.

+ Details

Name:	kmx_WarehouseFacilitiesMaximumBorrowingCapacity
Namespace Prefix:	kmx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of total borrowing capacity currently available under the warehouse facilities (current borrowing capacity less the amount of borrowings outstanding).

+ References

No definition available.

+ Details

Name:	kmx_WarehouseFacilitiesRemainingBorrowingCapacity
Namespace Prefix:	kmx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Warehouse Facility Additional Limit

+ References

No definition available.

+ Details

Name:	kmx_WarehouseFacilityAdditionalLimit
Namespace Prefix:	kmx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Warehouse Facility Additional Term Of Facility

+ References

No definition available.

+ Details

Name:	kmx_WarehouseFacilityAdditionalTermOfFacility
Namespace Prefix:	kmx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Reflects when a warehouse facility terminates, which may be presented in a variety of ways (year, month and year, day, month and year, quarter).

+ References

No definition available.

+ Details

Name:	kmx_WarehouseFacilityExpirationDate
Namespace Prefix:	kmx_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Latest date the outstanding debt instruments are required to be repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(2))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentMaturityDateRangeEnd1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityExpirationDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of debt for which creditor does not have general recourse to the debtor but rather has recourse only to the property used for collateral in the transaction or other specific property.

+ References

No definition available.

+ Details

Name:	us-gaap_NonRecourseDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant