v2.4.0.8
Auto Loan Receivables (Auto Loan Receivables, Net) (Details) (USD $)
Aug. 31, 2013
May 31, 2013
Feb. 28, 2013
Aug. 31, 2012
May 31, 2012
Feb. 29, 2012
Non-recourse notes payable $ 6,730,000,000   $ 5,860,000,000      
Total ending managed receivables 6,683,100,000 [1],[2]   5,933,300,000 [1],[2]      
Accrued interest and fees 28,800,000   24,900,000      
Other 20,000,000   (5,000,000)      
Less allowance for loan losses (65,900,000) (60,900,000) (57,300,000) (49,500,000) (46,600,000) (43,300,000)
Auto loan receivables, net 6,665,985,000   5,895,918,000      
Warehouse Facilities Receivables [Member]
           
Total ending managed receivables 947,000,000   792,000,000      
Term securitizations [Member]
           
Total ending managed receivables 5,565,300,000   4,989,700,000      
Other receivables [Member]
           
Total ending managed receivables $ 170,800,000   $ 151,600,000      
[1] Other receivables includes receivables not funded through the warehouse facilities or term securitizations.
[2] Classified based on credit grade assigned when customers were initially approved for financing.