Accumulated Other Comprehensive Loss (Changes In and Reclassifications Out of Accumulated Other Comprehensive Loss) (Details) - USD ($)
$ in Thousands |
3 Months Ended |
May. 31, 2015 |
May. 31, 2014 |
| Actuarial loss amortization reclassifications in net pension expense |
$ 489
|
$ 340
|
| Tax expense |
(183)
|
(127)
|
| Amortization reclassifications recognized in net pension expense, net of tax |
306
|
213
|
| Net change in retirement benefit plan unrecognized actuarial losses, net of tax |
306
|
213
|
| Effective portion of changes in fair value |
(4,316)
|
(1,798)
|
| Tax (expense) benefit |
1,698
|
707
|
| Effective portion of changes in fair value, net of tax |
(2,618)
|
(1,091)
|
| Reclassifications to CarMax Auto Finance income |
2,051
|
2,263
|
| Tax expense |
(806)
|
(890)
|
| Reclassifications to CarMax Auto Finance income, net of tax |
1,245
|
1,373
|
| Net change in cash flow hedge unrecognzied losses, net of tax |
(1,373)
|
282
|
| Other comprehensive income (loss), net of taxes |
(1,067)
|
495
|
| Cost Of Sales [Member] |
|
|
| Actuarial loss amortization reclassifications in net pension expense |
195
|
138
|
| Carmax Auto Finance [Member] |
|
|
| Actuarial loss amortization reclassifications in net pension expense |
11
|
7
|
| Selling, General And Administrative Expenses [Member] |
|
|
| Actuarial loss amortization reclassifications in net pension expense |
$ 283
|
$ 195
|