Quarterly report pursuant to Section 13 or 15(d)

Goodwill And Other Intangible Assets (Schedule Of Gross Carrying Value And Accumulated Amortization Of The Intangible Assets That Have Defined Useful Lives And Are Subject To Amortization) (Details)

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Goodwill And Other Intangible Assets (Schedule Of Gross Carrying Value And Accumulated Amortization Of The Intangible Assets That Have Defined Useful Lives And Are Subject To Amortization) (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Feb. 29, 2012
Y
Aug. 31, 2011
Infinite And Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value $ 593,124 $ 596,084
Accumulated Amortization 129,583 116,678
Net Book Value 463,541 479,406
Customer Relationships [Member]
   
Infinite And Finite-Lived Intangible Assets [Line Items]    
Weighted Average Amortization Period (Years) 16  
Gross Carrying Value 330,792 331,171
Accumulated Amortization 83,202 73,215
Net Book Value 247,590 257,956
Patents [Member]
   
Infinite And Finite-Lived Intangible Assets [Line Items]    
Weighted Average Amortization Period (Years) 13  
Gross Carrying Value 50,702 51,169
Accumulated Amortization 32,965 31,221
Net Book Value 17,737 19,948
Trademarks And Tradenames [Member]
   
Infinite And Finite-Lived Intangible Assets [Line Items]    
Weighted Average Amortization Period (Years) 20  
Gross Carrying Value 39,120 38,917
Accumulated Amortization 7,433 6,571
Net Book Value 31,687 32,346
Non-Compete Agreements And Other [Member]
   
Infinite And Finite-Lived Intangible Assets [Line Items]    
Weighted Average Amortization Period (Years) 4  
Gross Carrying Value 7,527 7,362
Accumulated Amortization 5,983 5,671
Net Book Value 1,544 1,691
Tradenames [Member]
   
Infinite And Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value $ 164,983 $ 167,465