Purchase Price Allocation Among Assets Acquired and Liabilities Assumed in Acquisition (Detail) (USD $)	Sep. 29, 2013	Dec. 31, 2012
Business Acquisition [Line Items]
Goodwill	$ 1,241,393,000	$ 1,249,456,000
2013 Acquisitions
Business Acquisition [Line Items]
Current assets	3,800,000
Property, plant and equipment	500,000
Goodwill	9,600,000
Total assets acquired	45,500,000
Current liabilities	2,000,000
Deferred tax liabilities	5,000,000
Liabilities assumed	7,000,000
Net assets acquired	38,500,000
2013 Acquisitions | In Process Research and Development
Business Acquisition [Line Items]
Intangible assets	19,900,000
Intellectual property | 2013 Acquisitions
Business Acquisition [Line Items]
Intangible assets	2,200,000
Trade Names | 2013 Acquisitions
Business Acquisition [Line Items]
Intangible assets	1,100,000
Customer Lists | 2013 Acquisitions
Business Acquisition [Line Items]
Intangible assets	$ 8,400,000