Annual report pursuant to Section 13 and 15(d)

Changes in Carrying Value of Goodwill (Detail)

v3.3.0.814
Changes in Carrying Value of Goodwill (Detail) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Feb. 28, 2015
Aug. 31, 2015
Aug. 31, 2014
Goodwill [Roll Forward]      
Beginning Balance   $ 742,770 $ 734,952
Recognition of Goodwill due to Business acquired     17,536
Purchase accounting adjustments   (3,244) (835)
Goodwill, Impairment Charge $ (78,000) (78,530)  
Write off of goodwill related to a business divestiture     (17,843)
Impact of changes in foreign currency rates   (52,740) 8,960
Ending Balance   608,256 742,770
Industrial      
Goodwill [Roll Forward]      
Beginning Balance   100,266 82,611
Recognition of Goodwill due to Business acquired     17,536
Purchase accounting adjustments   (3,244) 0
Goodwill, Impairment Charge   0  
Write off of goodwill related to a business divestiture     0
Impact of changes in foreign currency rates   (4,915) 119
Ending Balance   92,107 100,266
Energy      
Goodwill [Roll Forward]      
Beginning Balance   350,627 341,903
Recognition of Goodwill due to Business acquired     0
Purchase accounting adjustments   0 (835)
Goodwill, Impairment Charge   (78,530)  
Write off of goodwill related to a business divestiture     0
Impact of changes in foreign currency rates   (35,647) 9,559
Ending Balance   236,450 350,627
Engineered Solutions      
Goodwill [Roll Forward]      
Beginning Balance   291,877 310,438
Recognition of Goodwill due to Business acquired     0
Purchase accounting adjustments   0 0
Goodwill, Impairment Charge   0  
Write off of goodwill related to a business divestiture     (17,843)
Impact of changes in foreign currency rates   (12,178) (718)
Ending Balance   $ 279,699 $ 291,877