Gross Carrying Amount and Accumulated Amortization of Acquired Intangible Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Intangible Assets [Line Items]
Definite-lived intangible assets, Gross Amount	$ 2,886,320	$ 2,921,538
Gross Amount	2,896,320	2,931,538
Definite-lived intangible assets, Accumulated Amortization	1,405,217	1,254,360
Definite-lived intangible assets, Net Book Value	1,481,103	1,667,178
Net Book Value	1,491,103	1,677,178
Indefinite-lived intangible assets, Gross Amount	10,000	10,000
Indefinite-lived intangible assets	10,000	10,000
Trademarks
Intangible Assets [Line Items]
Indefinite-lived intangible assets, Gross Amount	5,900	5,900
Indefinite-lived intangible assets	5,900	5,900
In-process Research and Development
Intangible Assets [Line Items]
Indefinite-lived intangible assets, Gross Amount	4,100	4,100
Indefinite-lived intangible assets	4,100	4,100
Customer relationships
Intangible Assets [Line Items]
Definite-lived intangible assets, Gross Amount	1,572,554	1,572,947
Definite-lived intangible assets, Accumulated Amortization	702,099	624,719
Definite-lived intangible assets, Net Book Value	870,455	948,228
Developed technology, patents & licenses
Intangible Assets [Line Items]
Definite-lived intangible assets, Gross Amount	1,250,894	1,248,719
Definite-lived intangible assets, Accumulated Amortization	671,853	571,808
Definite-lived intangible assets, Net Book Value	579,041	676,911
Trademarks and Trade Names
Intangible Assets [Line Items]
Definite-lived intangible assets, Gross Amount	62,872	83,472
Definite-lived intangible assets, Accumulated Amortization	31,265	41,433
Definite-lived intangible assets, Net Book Value	$ 31,607	42,039
Backlog
Intangible Assets [Line Items]
Definite-lived intangible assets, Gross Amount		16,400
Definite-lived intangible assets, Accumulated Amortization		$ 16,400