Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Nov. 30, 2013	Nov. 30, 2012
OPERATING ACTIVITIES:
Net earnings	$ 393,377	$ 327,063
Adjustments to reconcile net earnings to net cash used in operating activities:
Depreciation and amortization	73,983	70,721
Share-based compensation expense	54,948	46,597
Provision for loan losses	48,993	40,154
Loss on disposition of assets	1,844	1,554
Deferred income tax benefit	(4,576)	(6,569)
Net decrease (increase) in:
Accounts receivable, net	23,934	23,774
Inventory	(38,464)	(246,452)
Other current assets	3,480	(7,336)
Auto loan receivables, net	(1,045,386)	(632,342)
Other assets	(6,714)	(506)
Net increase (decrease) in:
Accounts payable, accrued expenses and other current liabilities and accrued income taxes	1,707	(102,666)
Other liabilities	(266)	(13,220)
NET CASH USED IN OPERATING ACTIVITIES	(493,140)	(499,228)
INVESTING ACTIVITIES:
Capital expenditures	(212,900)	(184,942)
Proceeds from sales of assets	5,143	0
Increase in restricted cash from collections on auto loan receivables	(22,508)	(46)
Increase in restricted cash in reserve accounts	(7,826)	(6,912)
Release of restricted cash from reserve accounts	15,022	15,980
Purchases of money market securities, net	(3,833)	(2,088)
Purchases of investments available-for-sale	(1,868)	(1,525)
Sales of investments available-for-sale	71	318
NET CASH USED IN INVESTING ACTIVITIES	(228,699)	(179,215)
FINANCING ACTIVITIES:
Increase (decrease) in short-term debt, net	932	(237)
Payments on finance and capital lease obligations	(14,963)	(10,365)
Issuance of non-recourse notes payable	5,300,000	4,010,000
Payments on non-recourse notes payable	(4,185,021)	(3,313,626)
Repurchase and retirement of common stock	(196,748)	(51,091)
Equity issuances, net	19,967	29,486
Excess tax benefits from share-based payment arrangements	13,066	16,728
NET CASH PROVIDED BY FINANCING ACTIVITIES	937,233	680,895
Increase in cash and cash equivalents	215,394	2,452
Cash and cash equivalents at beginning of year	449,364	442,658
CASH AND CASH EQUIVALENTS AT END OF YEAR	$ 664,758	$ 445,110