v2.4.0.6
Accounting Policies (Narrative) (Details) (USD $)
9 Months Ended
Nov. 30, 2012
item
Feb. 29, 2012
Accounting Policies [Abstract]    
Cash equivalents $ 397,100,000 $ 429,300,000
Restricted cash from collections on auto loan receivables 204,360,000 204,314,000
Number of warehouses 2  
Required benchmark for account delinquency 120 days  
Restricted cash on deposit in reserve accounts 36,200,000 45,300,000
Restricted investments $ 34,700,000 $ 31,400,000