v2.4.0.6
Auto Loan Receivables (Auto Loan Receivables, Net) (Details) (USD $)
Nov. 30, 2012
Aug. 31, 2012
Feb. 29, 2012
Nov. 30, 2011
Aug. 31, 2011
Feb. 28, 2011
Non-recourse notes payable $ 5,380,000,000   $ 4,680,000,000      
Total ending managed receivables 5,583,400,000 [1]   4,981,800,000 [1] 4,823,800,000 [1]   4,334,600,000 [1]
Accrued interest and fees 25,800,000   23,100,000 24,300,000   20,900,000
Other (2,900,000)   (1,800,000) 1,100,000   4,000,000
Less allowance for loan losses (54,300,000) (49,500,000) (43,300,000) (41,400,000) (36,200,000) (38,900,000)
Auto loan receivables, net 5,552,035,000   4,959,847,000 4,807,800,000   4,320,600,000
Warehouse Facilities Receivables [Member]
           
Total ending managed receivables 876,000,000   553,000,000 876,000,000   943,000,000
Term securitizations [Member]
           
Total ending managed receivables 4,475,100,000   4,211,800,000 3,697,100,000   3,193,100,000
Other receivables [Member]
           
Total ending managed receivables $ 232,300,000 [2]   $ 217,000,000 [2] $ 250,700,000 [2]   $ 198,500,000 [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