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Acquisitions - Additional Information (Detail) (USD $)
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12 Months Ended | 12 Months Ended | 0 Months Ended | |||||||||||||||||
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Aug. 31, 2013
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Aug. 31, 2012
acquisition
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Aug. 31, 2011
acquisition
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Aug. 27, 2013
Viking
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Aug. 31, 2012
Engineered Solutions
Entity
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Jul. 20, 2012
CrossControl
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Mar. 28, 2012
Turotest
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Feb. 10, 2012
Jeyco
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Jun. 02, 2011
Weasler Engineering, Inc.
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Dec. 10, 2010
Mastervolt International Holding B.V.
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Aug. 31, 2012
Customer Relationships
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Aug. 31, 2011
Customer Relationships
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Aug. 27, 2013
Customer Relationships
Viking
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Aug. 31, 2012
Tradenames
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Aug. 31, 2011
Tradenames
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Aug. 27, 2013
Tradenames
Viking
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Aug. 31, 2012
Technologies
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Aug. 31, 2012
Non-compete Agreements
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Aug. 31, 2011
Non-compete Agreements
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Aug. 31, 2011
Patents and Technologies
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| Business Acquisition [Line Items] | ||||||||||||||||||||
| Transaction costs related to business acquisition activities | $ 3,700,000 | $ 1,400,000 | $ 1,900,000 | |||||||||||||||||
| Reductions in goodwill due to purchase price adjustments (less than $0.1 million in fiscal 2013) | 17,000 | (3,280,000) | ||||||||||||||||||
| Recognition of intangible assets due to acquisitions | 32,800,000 | 157,500,000 | 65,360,000 | 24,200,000 | 81,500,000 | 40,500,000 | 5,700,000 | 69,900,000 | 24,900,000 | 2,200,000 | 700,000 | 600,000 | 5,500,000 | |||||||
| Number of tuck-in acquisitions | 2 | |||||||||||||||||||
| Cash paid for business acquisitions, net of cash acquired | 235,489,000 | 69,309,000 | 313,106,000 | 40,600,000 | 8,100,000 | 20,700,000 | 153,200,000 | 158,200,000 | ||||||||||||
| Number of businesses acquired | 3 | 2 | ||||||||||||||||||
| Deferred purchase price for business acquisitions | 5,300,000 | |||||||||||||||||||
| Recognition of goodwill due to acquisitions | $ 40,100,000 | $ 152,400,000 | $ 87,734,000 | |||||||||||||||||