Consolidated Statements Of Earnings (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended
May 31, 2014
May 31, 2013
SALES AND OPERATING REVENUES:    
NET SALES AND OPERATING REVENUES $ 3,750,196 $ 3,311,057
Cost of sales 3,248,465 2,862,961
GROSS PROFIT 501,731 448,096
CARMAX AUTO FINANCE INCOME 94,615 87,019
Selling, general and administrative expenses 313,446 290,189
Interest expense 7,601 7,878
Other income (expense) (277) 241
Earnings before income taxes 275,022 237,289
Income tax provision 105,369 90,638
NET EARNINGS 169,653 146,651
WEIGHTED AVERAGE COMMON SHARES:    
Basic 220,268 224,618
Diluted 223,632 228,552
NET EARNINGS PER SHARE:    
Basic $ 0.77 $ 0.65
Diluted $ 0.76 $ 0.64
Used Vehicle Sales [Member]
   
SALES AND OPERATING REVENUES:    
Used vehicle sales 3,060,341 2,701,755
Percentage of Sales    
Item as a percent of net sales and operating revenues 81.60% [1] 81.60% [1]
New Vehicle Sales [Member]
   
SALES AND OPERATING REVENUES:    
New vehicle sales 69,789 52,427
Percentage of Sales    
Item as a percent of net sales and operating revenues 1.90% [1] 1.60% [1]
Wholesale Vehicle Sales [Member]
   
SALES AND OPERATING REVENUES:    
Wholesale vehicle sales 545,245 490,659
Percentage of Sales    
Item as a percent of net sales and operating revenues 14.50% [1] 14.80% [1]
Other Sales And Revenues [Member]
   
SALES AND OPERATING REVENUES:    
Other sales and revenues $ 74,821 $ 66,216
Percentage of Sales    
Item as a percent of net sales and operating revenues 2.00% [1] 2.00% [1]
Net Sales And Operating Revenues [Member]
   
Percentage of Sales    
Item as a percent of net sales and operating revenues 100.00% [1] 100.00% [1]
Cost Of Sales [Member]
   
Percentage of Sales    
Item as a percent of net sales and operating revenues 86.60% [1] 86.50% [1]
Gross Profit [Member]
   
Percentage of Sales    
Item as a percent of net sales and operating revenues 13.40% [1] 13.50% [1]
CAF Income [Member]
   
Percentage of Sales    
Item as a percent of net sales and operating revenues 2.50% [1] 2.60% [1]
Selling, General And Administrative Expenses [Member]
   
Percentage of Sales    
Item as a percent of net sales and operating revenues 8.40% [1] 8.80% [1]
Interest Expense [Member]
   
Percentage of Sales    
Item as a percent of net sales and operating revenues 0.20% [1] 0.20% [1]
Other Loss Income [Member]
   
Percentage of Sales    
Item as a percent of net sales and operating revenues 0.00% [1] 0.00% [1]
Earnings Before Income Taxes [Member]
   
Percentage of Sales    
Item as a percent of net sales and operating revenues 7.30% [1] 7.20% [1]
Income Tax Provision [Member]
   
Percentage of Sales    
Item as a percent of net sales and operating revenues 2.80% [1] 2.70% [1]
Net Earnings [Member]
   
Percentage of Sales    
Item as a percent of net sales and operating revenues 4.50% [1] 4.40% [1]
[1] Calculated as a percentage of net sales and operating revenues and may not equal totals due to rounding.