Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Aug. 31, 2012		Aug. 31, 2011		Aug. 31, 2012		Aug. 31, 2011
Consolidated Statements of Comprehensive Income [Abstract]
NET EARNINGS	$ 111,636		$ 111,154	[1],[2]	$ 232,382		$ 236,654	[1],[2]
Retirement plans:
Amortization recognized in net pension expense	189	[3]	103	[1],[3]	449	[3]	158	[1],[3]
Cash flow hedges:
Effective portion of changes in fair value	6,465	[4]	(6,487)	[1],[4]	4,634	[4]	(10,612)	[1],[4]
Reclassifications to CarMax Auto Finance income	730	[5]	975	[1],[5]	3,965	[5]	2,095	[1],[5]
Other comprehensive income (loss), net of taxes	7,384		(5,409)	[1]	9,048		(8,359)	[1]
TOTAL COMPREHENSIVE INCOME	$ 119,020		$ 105,745	[1]	$ 241,430		$ 228,295	[1]

[1] As discussed in Note 2, fiscal 2012 reflects the revisions to correct our accounting for sale-leaseback transactions.

[2] (1) As discussed in Note 2, fiscal 2012 reflects the revisions to correct our accounting for sale-leaseback transactions.

[3] Net of tax of $111 and $14 for the three months ended August 31, 2012 and 2011, respectively; and $151 and $72 for the six months ended August 31, 2012 and 2011, respectively.

[4] Net of tax benefit of $9,845 and $4,218 for the three months ended August 31, 2012 and 2011, respectively; and $11,026 and $6,506 for the six months ended August 31, 2012 and 2011, respectively. The three months and six months ended August 31, 2012, include a tax benefit adjustment of $8,518 related to prior years.

[5] Net of tax of $2,563 and $0 for the three months ended August 31, 2012 and 2011, respectively; and $2,563 and $0 for the six months ended August 31, 2012 and 2011, respectively. The three months and six months ended August 31, 2012, include a tax provision adjustment of $1,270 related to the first quarter of fiscal 2013.