Cancellation Reserves (Schedule Of Cancellation Reserves Accrual) (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
May. 31, 2015 |
May. 31, 2014 |
|
| Cancellation Reserves [Abstract] | ||
| Balance as of beginning of period | $ 94.4 | $ 72.5 |
| Cancellations | (14.4) | (12.5) |
| Provision for future cancellations | 20.3 | 21.1 |
| Balance as of end of period | $ 100.3 | $ 81.1 |