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Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)
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3 Months Ended | |
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May 31, 2014
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Feb. 28, 2014
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| Summary Of Significant Accounting Policies [Abstract] | ||
| Cash equivalents | $ 514,700,000 | $ 607,000,000 |
| Restricted cash from collections on auto loan receivables | 290,653,000 | 259,299,000 |
| Number of warehouses | 2 | |
| Required benchmark for account delinquency | 120 days | |
| Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment | 754,200,000 | 730,600,000 |
| Restricted cash on deposit in reserve accounts | 35,800,000 | 32,500,000 |
| Restricted investments | $ 43,200,000 | $ 40,200,000 |