Goodwill and Intangible Assets (Weighted Average Amortization Period by Intangible Asset Class) (Detail)	12 Months Ended
	Dec. 31, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	5 years 10 months 24 days
Trademarks and patents [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	7 years 7 months 6 days
Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	4 years 8 months 12 days
Covenant not-to-compete [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	2 years
Customer relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	7 years 4 months 24 days