Quarterly report pursuant to Section 13 or 15(d)

Summary of Financial Information by Reportable Segment and Product Line (Detail)

v2.4.0.6
Summary of Financial Information by Reportable Segment and Product Line (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
May 31, 2012
May 31, 2011
May 31, 2012
May 31, 2011
Aug. 31, 2011
Segment Reporting Information [Line Items]          
Net sales $ 429,215 $ 392,777 $ 1,200,038 $ 1,041,887  
Operating profit 67,664 58,001 174,401 136,619  
Assets 2,034,109   2,034,109   2,056,681
Industrial
          
Segment Reporting Information [Line Items]          
Net sales 110,102 107,759 308,696 284,086  
Operating profit 30,682 29,517 85,307 69,853  
Assets 277,918   277,918   263,680
Energy
          
Segment Reporting Information [Line Items]          
Net sales 96,399 78,002 255,758 210,333  
Operating profit 18,515 13,545 43,364 32,194  
Assets 532,871   532,871   517,428
Electrical
          
Segment Reporting Information [Line Items]          
Net sales 85,947 80,329 245,885 205,901  
Operating profit 8,814 5,462 19,592 14,168  
Assets 506,248   506,248   547,556
Engineered Solutions
          
Segment Reporting Information [Line Items]          
Net sales 136,767 126,687 389,699 341,567  
Operating profit 18,467 19,977 50,747 47,203  
Assets 621,197   621,197   632,242
Vehicle Systems
          
Segment Reporting Information [Line Items]          
Net sales 75,417 94,423 220,696 250,926  
Other
          
Segment Reporting Information [Line Items]          
Net sales 61,350 32,264 169,003 90,641  
General Corporate
          
Segment Reporting Information [Line Items]          
Operating profit (8,814) (10,500) (24,609) (26,799)  
Assets $ 95,875   $ 95,875   $ 95,775