Consolidated Statements Of Earnings - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 31, 2025	Aug. 31, 2024	Aug. 31, 2025	Aug. 31, 2024
SALES AND OPERATING REVENUES:
NET SALES AND OPERATING REVENUES	$ 6,594,684	$ 7,013,529	$ 14,141,225	$ 14,126,926
TOTAL COST OF SALES	5,877,018	6,253,062	12,529,936	12,574,564
GROSS PROFIT	717,666	760,467	1,611,289	1,552,362
CARMAX AUTO FINANCE INCOME	102,638	115,580	244,288	262,550
Selling, general and administrative expenses	601,093	610,562	1,260,736	1,249,140
Depreciation, Depletion and Amortization, Nonproduction	67,285	63,901	133,024	125,770
Interest expense	28,453	27,021	55,523	58,383
Other income	(3,624)	(3,281)	(3,933)	(2,865)
Earnings before income taxes	127,097	177,844	410,227	384,484
Income tax provision	31,719	45,035	104,468	99,235
NET EARNINGS	$ 95,378	$ 132,809	$ 305,759	$ 285,249
WEIGHTED AVERAGE COMMON SHARES:
Basic, shares	149,291	155,866	150,714	156,513
Diluted, shares	149,637	156,526	151,122	157,116
NET EARNINGS PER SHARE:
Basic (in dollars per share)	$ 0.64	$ 0.85	$ 2.03	$ 1.82
Diluted (in dollars per share)	$ 0.64	$ 0.85	$ 2.02	$ 1.82
Used vehicle sales
SALES AND OPERATING REVENUES:
NET SALES AND OPERATING REVENUES	$ 5,270,712	$ 5,677,081	$ 11,374,152	$ 11,354,557
TOTAL COST OF SALES	4,828,095	5,198,315	10,377,352	10,380,294
Wholesale vehicle sales
SALES AND OPERATING REVENUES:
NET SALES AND OPERATING REVENUES	1,149,568	1,154,465	2,402,306	2,410,904
TOTAL COST OF SALES	1,012,248	1,016,590	2,108,415	2,115,901
Total other sales and revenues
SALES AND OPERATING REVENUES:
NET SALES AND OPERATING REVENUES	174,404	181,983	364,767	361,465
TOTAL COST OF SALES	$ 36,675	$ 38,157	$ 44,169	$ 78,369
NET SALES AND OPERATING REVENUES
Percentage of Sales
Item as a percent of net sales and operating revenues	100.00%	100.00%	100.00%	100.00%
TOTAL COST OF SALES
Percentage of Sales
Item as a percent of net sales and operating revenues	89.10%	89.20%	88.60%	89.00%
GROSS PROFIT
Percentage of Sales
Item as a percent of net sales and operating revenues	10.90%	10.80%	11.40%	11.00%
CARMAX AUTO FINANCE INCOME
Percentage of Sales
Item as a percent of net sales and operating revenues	1.60%	1.60%	1.70%	1.90%
Selling, general and administrative expenses
Percentage of Sales
Item as a percent of net sales and operating revenues	9.10%	8.70%	8.90%	8.80%
Depreciation and Amortization, Nonproduction
Percentage of Sales
Item as a percent of net sales and operating revenues	1.00%	0.90%	0.90%	0.90%
Interest expense
Percentage of Sales
Item as a percent of net sales and operating revenues	0.40%	0.40%	0.40%	0.40%
Other income
Percentage of Sales
Item as a percent of net sales and operating revenues	(0.10%)	0.00%	0.00%	0.00%
Earnings before income taxes
Percentage of Sales
Item as a percent of net sales and operating revenues	1.90%	2.50%	2.90%	2.70%
Income tax provision
Percentage of Sales
Item as a percent of net sales and operating revenues	0.50%	0.60%	0.70%	0.70%
NET EARNINGS
Percentage of Sales
Item as a percent of net sales and operating revenues	1.40%	1.90%	2.20%	2.00%
NET SALES AND OPERATING REVENUES | Used vehicle sales
Percentage of Sales
Item as a percent of net sales and operating revenues	79.90%	80.90%	80.40%	80.40%
NET SALES AND OPERATING REVENUES | Wholesale vehicle sales
Percentage of Sales
Item as a percent of net sales and operating revenues	17.40%	16.50%	17.00%	17.10%
NET SALES AND OPERATING REVENUES | Total other sales and revenues
Percentage of Sales
Item as a percent of net sales and operating revenues	2.60%	2.60%	2.60%	2.60%
TOTAL COST OF SALES | Used vehicle sales
Percentage of Sales
Item as a percent of net sales and operating revenues	73.20%	74.10%	73.40%	73.50%
TOTAL COST OF SALES | Wholesale vehicle sales
Percentage of Sales
Item as a percent of net sales and operating revenues	15.30%	14.50%	14.90%	15.00%
TOTAL COST OF SALES | Total other sales and revenues
Percentage of Sales
Item as a percent of net sales and operating revenues	0.60%	0.50%	0.30%	0.60%