|
Debt (Detail) - Schedule of debt (USD $)
In Millions |
Aug. 31, 2011
|
May 31, 2011
|
Aug. 31, 2010
|
|---|---|---|---|
| Debt, Long-term and Short-term, Combined Amount | $ 200.0 | $ 203.4 | $ 242.3 |
| Debt, Long-term and Short-term, Combined Amount | 200.4 | 207.5 | 239.2 |
| Less lines of credit, short-term debt and current portion of long-term debt | (47.4) | (43.5) | (50.5) |
| Less lines of credit, short-term debt and current portion of long-term debt | (47.4) | (43.5) | (50.5) |
| Total long-term debt | 152.6 | 159.9 | 191.8 |
| Total long-term debt | 153.0 | 164.0 | 188.7 |
|
Term Loan [Member]
|
|||
| Debt, Long-term and Short-term, Combined Amount | 39.5 | 50.2 | 82.3 |
| Debt, Long-term and Short-term, Combined Amount | 39.5 | 50.2 | 82.3 |
|
Notes Due2013 [Member]
|
|||
| Debt, Long-term and Short-term, Combined Amount | 152.6 | 152.5 | 152.3 |
| Debt, Long-term and Short-term, Combined Amount | 153.0 | 156.6 | 149.2 |
|
Line of Credit [Member]
|
|||
| Debt, Long-term and Short-term, Combined Amount | 7.9 | 0.7 | 7.7 |
| Debt, Long-term and Short-term, Combined Amount | $ 7.9 | $ 0.7 | $ 7.7 |