Quarterly report pursuant to Section 13 or 15(d)

Goodwill And Other Intangible Assets (Schedule Of Changes In Carrying Value Of Goodwill) (Details)

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Goodwill And Other Intangible Assets (Schedule Of Changes In Carrying Value Of Goodwill) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Nov. 30, 2011
Goodwill [Line Items]  
Balance as of August 31, 2011 $ 888,466
Purchase accounting adjustments (1,166)
Impact of changes in foreign currency rates (15,444)
Balance as of November 30, 2011 871,856
Industrial [Member]
  
Goodwill [Line Items]  
Balance as of August 31, 2011 85,409
Impact of changes in foreign currency rates (2,393)
Balance as of November 30, 2011 83,016
Energy [Member]
  
Goodwill [Line Items]  
Balance as of August 31, 2011 252,285
Impact of changes in foreign currency rates (6,448)
Balance as of November 30, 2011 245,837
Electrical [Member]
  
Goodwill [Line Items]  
Balance as of August 31, 2011 260,777
Purchase accounting adjustments (1,609)
Impact of changes in foreign currency rates (3,614)
Balance as of November 30, 2011 255,554
Engineered Solutions [Member]
  
Goodwill [Line Items]  
Balance as of August 31, 2011 289,995
Purchase accounting adjustments 443
Impact of changes in foreign currency rates (2,989)
Balance as of November 30, 2011 $ 287,449