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
 6 Months Ended
Feb. 29, 2012
Goodwill [Line Items]  
Balance as of August 31, 2011 $ 888,466
Business acquired 12,042
Purchase accounting adjustments (2,719)
Impact of changes in foreign currency rates (13,966)
Balance as of February 29, 2012 883,823
Industrial [Member]
  
Goodwill [Line Items]  
Balance as of August 31, 2011 85,409
Impact of changes in foreign currency rates (2,459)
Balance as of February 29, 2012 82,950
Energy [Member]
  
Goodwill [Line Items]  
Balance as of August 31, 2011 252,285
Business acquired 12,042
Impact of changes in foreign currency rates (4,498)
Balance as of February 29, 2012 259,829
Electrical [Member]
  
Goodwill [Line Items]  
Balance as of August 31, 2011 260,777
Purchase accounting adjustments (3,995)
Impact of changes in foreign currency rates (3,641)
Balance as of February 29, 2012 253,141
Engineered Solutions [Member]
  
Goodwill [Line Items]  
Balance as of August 31, 2011 289,995
Purchase accounting adjustments 1,276
Impact of changes in foreign currency rates (3,368)
Balance as of February 29, 2012 $ 287,903