Quarterly report pursuant to Section 13 or 15(d)

Goodwill And Other Intangible Assets (Schedule Of Gross Carrying Value And Accumulated Amortization Of Intangible Assets) (Details)

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Goodwill And Other Intangible Assets (Schedule Of Gross Carrying Value And Accumulated Amortization Of Intangible Assets) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Nov. 30, 2011
Aug. 31, 2011
Infinite and Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value $ 586,550 $ 596,084
Accumulated Amortization 122,112 116,678
Net Book Value 464,438 479,406
Indefinite lived intangible, Tradenames 164,949 167,465
Customer Relationships [Member]
   
Infinite and Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value 325,329 331,171
Accumulated Amortization 77,344 73,215
Net Book Value 247,985 257,956
Weighted Average Amortization Period (Years) 16  
Patents [Member]
   
Infinite and Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value 50,635 51,169
Accumulated Amortization 31,998 31,221
Net Book Value 18,637 19,948
Weighted Average Amortization Period (Years) 13  
Trademarks And Tradenames [Member]
   
Infinite and Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value 38,505 38,917
Accumulated Amortization 6,950 6,571
Net Book Value 31,555 32,346
Weighted Average Amortization Period (Years) 20  
Non-Compete Agreements And Other [Member]
   
Infinite and Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value 7,132 7,362
Accumulated Amortization 5,820 5,671
Net Book Value $ 1,312 $ 1,691
Weighted Average Amortization Period (Years) 4