Goodwill and Other Intangible Assets - Allocation of Goodwill by Reportable Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill [Line Items]
Goodwill, gross, Beginning balance	$ 1,573,200	$ 1,566,900	$ 1,554,100
Acquisitions and adjustments to purchase price allocations		9,600
Preliminary purchase price allocations	1,334,800		23,000
Goodwill allocated to BiMetals sale			(6,500)
Foreign exchange	(21,700)	(3,300)	(3,700)
Goodwill, gross, Ending balance	2,886,300	1,573,200	1,566,900
Impairment	(74,400)	(4,900)	(36,200)
Accumulated impairment charges	(195,700)	(121,300)	(116,400)	$ (80,200)
Goodwill, net	2,690,636	1,451,887
Wireless [Member]
Goodwill [Line Items]
Goodwill, gross, Beginning balance	833,100	821,100	824,800
Acquisitions and adjustments to purchase price allocations		15,300
Preliminary purchase price allocations	20,200
Foreign exchange	(3,100)	(3,300)	(3,700)
Goodwill, gross, Ending balance	850,200	833,100	821,100
Impairment	(74,400)	(4,900)
Accumulated impairment charges	(159,500)	(85,100)	(80,200)	$ (80,200)
Goodwill, net	690,700
Enterprise [Member]
Goodwill [Line Items]
Goodwill, gross, Beginning balance	653,800	659,500	636,500
Acquisitions and adjustments to purchase price allocations		(5,700)
Preliminary purchase price allocations			23,000
Goodwill, gross, Ending balance	653,800	653,800	659,500
Goodwill, net	653,800
Broadband [Member]
Goodwill [Line Items]
Goodwill, gross, Beginning balance	86,300	86,300	92,800
Goodwill allocated to BiMetals sale			(6,500)
Goodwill, gross, Ending balance	86,300	86,300	86,300
Impairment			(36,200)
Accumulated impairment charges	(36,200)	$ (36,200)	$ (36,200)
Goodwill, net	50,100
BNS [Member]
Goodwill [Line Items]
Preliminary purchase price allocations	1,314,600
Foreign exchange	(18,600)
Goodwill, gross, Ending balance	1,296,000
Goodwill, net	$ 1,296,000