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Gross Carrying Amount and Accumulated Amortization of Other Intangible Assets (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Nov. 30, 2012
Aug. 31, 2012
Indefinite And Finite Lived Intangible Assets [Line Items]    
Other intangibles, gross $ 592,296 $ 589,480
Accumulated Amortization 152,108 143,596
Other intangibles, net 440,188 445,884
Tradenames
    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Gross Carrying Value 137,957 137,393
Customer Relationships
    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Gross Carrying Value 349,873 347,739
Accumulated Amortization 100,296 93,768
Net Book Value 249,577 253,971
Weighted Average Amortization Period 15 years  
Patents
    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Gross Carrying Value 53,042 52,851
Accumulated Amortization 35,865 34,842
Net Book Value 17,177 18,009
Weighted Average Amortization Period 13 years  
Trademarks and Tradenames
    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Gross Carrying Value 43,690 43,820
Accumulated Amortization 9,357 8,670
Net Book Value 34,333 35,150
Weighted Average Amortization Period 19 years  
Non-Compete Agreements and Other
    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Gross Carrying Value 7,734 7,677
Accumulated Amortization 6,590 6,316
Net Book Value $ 1,144 $ 1,361
Weighted Average Amortization Period 4 years