Components of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Acquired Intangible Assets [Line Items]
Acquired other intangible assets	$ 257,869
Developed technology
Acquired Intangible Assets [Line Items]
Acquired other intangible assets	5,143
Weighted Average Amortization Period (years)	3 years
Customer Relationships
Acquired Intangible Assets [Line Items]
Acquired other intangible assets	167,450
Weighted Average Amortization Period (years)	16 years 4 months 24 days
Trademarks
Acquired Intangible Assets [Line Items]
Acquired other intangible assets	$ 85,276