|
Severance (Detail) - Schedule of accrued severance (USD $)
In Millions |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
|
Aug. 31, 2011
|
Aug. 31, 2010
|
May 31, 2011
|
|
| Beginning balance | $ 1.9 | $ 3.4 | $ 3.4 |
| Accruals | 3.3 | 2.1 | 6.7 |
| Payments | (2.8) | (3.8) | (8.2) |
| Ending balance | $ 2.4 | $ 1.7 | $ 1.9 |