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Network
2414403 - Disclosure - Accumulated Other Comprehensive Loss (Accumulated Other Comprehensive Loss) (Details)
(http://www.carmax.com/role/AccumulatedOtherComprehensiveLossAccumulatedOtherComprehensiveLossDetails)
TableAccumulated Other Comprehensive Income (Loss) [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001170010 (http://www.sec.gov/CIK)
Accumulated Other Comprehensive Income (Loss) [Line Items]Period [Axis]
2015-03-01 - 2016-02-29
2014-03-01 - 2015-02-28
2013-03-01 - 2014-02-28
Equity Components [Axis]Equity Components [Axis]Equity Components [Axis]
Net Unrecognized Actuarial LossesNet Unrecognized Hedge LossesEquity Component [Domain]Net Unrecognized Actuarial LossesNet Unrecognized Hedge LossesEquity Component [Domain]Net Unrecognized Actuarial LossesNet Unrecognized Hedge LossesEquity Component [Domain]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
 
 
 
 
 
 
 
 
 
Balance
(59,220,000) 
(6,171,000) 
(65,391,000) 
(38,715,000) 
(7,556,000) 
(46,271,000) 
(49,479,000) 
(10,329,000) 
(59,808,000) 
Other comprehensive income (loss) before reclassifications
1,462,000  
(12,578,000) 
(11,116,000) 
(21,358,000) 
(3,535,000) 
(24,893,000) 
9,713,000  
(3,216,000) 
6,497,000  
Amounts reclassified from accumulated other comprehensive loss
1,288,000  
5,023,000  
6,311,000  
853,000  
4,920,000  
5,773,000  
1,051,000  
5,989,000  
7,040,000  
Other comprehensive income
2,750,000  
 
(7,555,000) 
 
(4,805,000) 
 
(20,505,000) 
 
1,385,000  
 
(19,120,000) 
 
10,764,000  
 
2,773,000  
 
13,537,000  
 
Balance
(56,470,000) 
 
(13,726,000) 
 
(70,196,000) 
 
(59,220,000) 
 
(6,171,000) 
 
(65,391,000) 
 
(38,715,000) 
 
(7,556,000) 
 
(46,271,000)