Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
Nov. 30, 2014	Nov. 30, 2013
OPERATING ACTIVITIES:
Net earnings	$ 454,220us-gaap_NetIncomeLoss	$ 393,377us-gaap_NetIncomeLoss
Adjustments to reconcile net earnings to net cash used in operating activities:
Depreciation and amortization	84,994	73,983
Share-based compensation expense	57,192us-gaap_ShareBasedCompensation	54,948us-gaap_ShareBasedCompensation
Provision for loan losses	60,274us-gaap_ProvisionForLoanAndLeaseLosses	48,993us-gaap_ProvisionForLoanAndLeaseLosses
Provision for cancellation reserves	53,764	35,247
Deferred income tax (benefit) provision	(13,347)us-gaap_DeferredIncomeTaxExpenseBenefit	(4,576)us-gaap_DeferredIncomeTaxExpenseBenefit
Loss (gain) on disposition of assets and other	2,486us-gaap_GainLossOnDispositionOfAssets	1,844us-gaap_GainLossOnDispositionOfAssets
Net decrease (increase) in:
Accounts receivable, net	(8,257)	23,934
Inventory	(323,249)us-gaap_IncreaseDecreaseInInventories	(38,464)us-gaap_IncreaseDecreaseInInventories
Other current assets	(22,061)	3,480
Auto loan receivables, net	(1,050,733)	(1,045,386)
Other assets	(2,910)	(6,714)
Net increase (decrease) in:
Accounts payable, accrued expenses and other current liabilities and accrued income taxes	(16,321)	1,707
Other liabilities	(60,667)	(35,513)
NET CASH USED IN OPERATING ACTIVITIES	(784,615)	(493,140)
INVESTING ACTIVITIES:
Capital expenditures	(238,860)	(212,900)
Proceeds from sales of assets	5,833	5,143
Increase in restricted cash from collections on auto loan receivables	(16,419)	(22,508)
Increase in restricted cash in reserve accounts	(11,323)	(7,826)
Release of restricted cash from reserve accounts	6,340	15,022
(Purchases) sales of money market securities, net	(8,604)	(3,833)
Purchases of Trading Securities	(3,468)kmx_PurchasesOfTradingSecurities	(1,868)kmx_PurchasesOfTradingSecurities
Proceeds from Sale of Trading Securities	333kmx_ProceedsFromSaleOfTradingSecurities	71kmx_ProceedsFromSaleOfTradingSecurities
NET CASH USED IN INVESTING ACTIVITIES	(266,168)	(228,699)
FINANCING ACTIVITIES:
Increase (decrease) in short-term debt, net	1,992	932
Issuances of long-term debt	300,000	0
Payments of Debt Issuance Costs	(496)us-gaap_PaymentsOfDebtIssuanceCosts	0us-gaap_PaymentsOfDebtIssuanceCosts
Payments on finance and capital lease obligations	(13,395)	(14,963)
Issuance of non-recourse notes payable	5,882,000	5,300,000
Payments on non-recourse notes payable	(4,950,011)kmx_PaymentsOnNonRecourseDebt	(4,185,021)kmx_PaymentsOnNonRecourseDebt
Repurchase and retirement of common stock	(688,619)	(196,748)
Equity issuances, net	47,330	19,967
Excess tax benefits from share-based payment arrangements	33,961	13,066
NET CASH PROVIDED BY FINANCING ACTIVITIES	612,762	937,233
(Decrease) Increase in cash and cash equivalents	(438,021)	215,394
Cash and cash equivalents at beginning of year	627,901	449,364
CASH AND CASH EQUIVALENTS AT END OF PERIOD	189,880	664,758
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Cash paid for interest	22,232us-gaap_InterestPaid	23,339us-gaap_InterestPaid
Cash paid for income taxes	287,905us-gaap_IncomeTaxesPaid	213,965us-gaap_IncomeTaxesPaid
Non-cash investing and financing activities:
Increase (decrease) in accrued capital expenditures	16,538	20,069
Increase in finance and capital lease obligations	$ 11,697us-gaap_CapitalLeaseObligationsIncurred	$ 0us-gaap_CapitalLeaseObligationsIncurred

Increase in restricted cash on deposit in reserve accounts for the benefit of the securitization investors. In the event that the cash generated by the securitized receivables in a given period was insufficient to pay the interest, principal and other required payments, the balances on deposit in the reserve accounts would be used to pay those amounts. These funds are restricted for the benefit of holders of non-recourse notes payable.

No definition available.