Consolidated Net Revenues by Country (Detail) | 12 Months Ended | ||
|---|---|---|---|
Aug. 31, 2011 | Aug. 31, 2010 | Aug. 31, 2009 | |
UNITED STATES | |||
| Segment Reporting Information [Line Items] | |||
| Net revenues, percentage by country | 35.00% | 36.00% | 36.00% |
UNITED KINGDOM | |||
| Segment Reporting Information [Line Items] | |||
| Net revenues, percentage by country | 10.00% | 10.00% | 10.00% |