Weighted Average Amortization Period by Intangible Asset Class (Detail)	Jun. 30, 2012 Year
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	7.3
Trademarks and patents
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	9.1
Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	6.1
Covenant not-to-compete
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	3.7
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	9.3