Auto Loan Receivables (Auto Loan Receivables, Net) (Details) (USD $)	Feb. 28, 2014		Feb. 28, 2013		Feb. 29, 2012
Non-recourse notes payable	$ 7,250,000,000		$ 5,860,000,000
Total ending managed receivables	7,184,400,000	[1]	5,933,300,000	[1]
Accrued interest and fees	26,300,000		24,900,000
Other	7,000,000		(5,000,000)
Less allowance for loan losses	(69,900,000)		(57,300,000)		(43,300,000)
Auto loan receivables, net	7,147,848,000		5,895,918,000
Warehouse Facilities [Member]
Total ending managed receivables	879,000,000		792,000,000
Term Securitizations [Member]
Total ending managed receivables	6,145,500,000		4,989,700,000
Other Receivables [Member]
Total ending managed receivables	$ 159,900,000	[2]	$ 151,600,000	[2]

[1] Classified based on credit grade assigned when customers were initially approved for financing.

[2] Other receivables includes receivables not funded through the warehouse facilities or term securitizations.