Quarterly report pursuant to Section 13 or 15(d)

Changes in Carrying Value of Goodwill (Detail)

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Changes in Carrying Value of Goodwill (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Nov. 30, 2013
Goodwill [Roll Forward]  
Balance as of August 31, 2013 $ 734,952
Purchase accounting adjustments 74
Impact of changes in foreign currency rates 10,450
Balance as of November 30, 2013 745,476
Industrial
 
Goodwill [Roll Forward]  
Balance as of August 31, 2013 82,611
Purchase accounting adjustments 0
Impact of changes in foreign currency rates 983
Balance as of November 30, 2013 83,594
Energy
 
Goodwill [Roll Forward]  
Balance as of August 31, 2013 341,903
Purchase accounting adjustments 74
Impact of changes in foreign currency rates 7,785
Balance as of November 30, 2013 349,762
Engineered Solutions
 
Goodwill [Roll Forward]  
Balance as of August 31, 2013 310,438
Purchase accounting adjustments 0
Impact of changes in foreign currency rates 1,682
Balance as of November 30, 2013 $ 312,120