Note 10 - Income Taxes (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Nov. 30, 2011
Nov. 30, 2010
Aug. 31, 2012
Effective Income Tax Rate, Continuing Operations 36.00% 39.00% 36.00%
Unrecognized Tax Benefits (in Dollars) $ 35.9    
Unrecognized Tax Benefits that Would Impact Effective Tax Rate (in Dollars) 29.4    
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations (in Dollars)     $ 23