Annual report pursuant to Section 13 and 15(d)

Business Segment, Geographic and Customer Information - Additional Information (Detail)

v3.8.0.1
Business Segment, Geographic and Customer Information - Additional Information (Detail)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Feb. 29, 2016
USD ($)
Feb. 29, 2016
USD ($)
Aug. 31, 2017
USD ($)
Segment
Aug. 31, 2016
USD ($)
Aug. 31, 2015
USD ($)
Segment Reporting Information [Line Items]          
Number of reportable segments | Segment     3    
Impairment and other divestiture charges     $ 116,979    
Impairment charge   $ 186,511   $ 186,511 $ 84,353
Largest customer sales in fiscal year, percent     3.00%    
Export sales from domestic operation, as a percentage of total net sales     6.00%    
Percentage of Product Sales to Consolidated Net Sales     82.00%    
Energy          
Segment Reporting Information [Line Items]          
Impairment and other divestiture charges     $ 117,000    
Impairment charge       $ 140,900 $ 84,400
Engineered Solutions          
Segment Reporting Information [Line Items]          
Impairment charge $ 45,700