Quarterly report pursuant to Section 13 or 15(d)

Contingencies and Litigation - Additional Information (Detail)

v2.4.0.8
Contingencies and Litigation - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
May 31, 2014
Aug. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations and Divestiture Activities[Line Items]    
Outstanding letters of credit $ 14.4 $ 10.7
Discounted present value of future minimum lease payments 25.2  
Electrical
   
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations and Divestiture Activities[Line Items]    
Discounted present value of future minimum lease payments $ 14.6