Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Net sales	$ 1,137,285	$ 1,143,979
Operating costs and expenses:
Cost of sales	682,459	696,888
Selling, general and administrative	211,554	209,197
Research and development	48,895	52,190
Amortization of purchased intangible assets	67,638	73,616
Restructuring costs, net	5,388	6,072
Asset impairments		15,293
Total operating costs and expenses	1,015,934	1,053,256
Operating income	121,351	90,723
Other income (expense), net	(16,736)	301
Interest expense	(69,554)	(72,562)
Interest income	874	2,579
Income before income taxes	35,935	21,041
Income tax expense	(2,373)	(8,461)
Net income	$ 33,562	$ 12,580
Earnings per share:
Basic	$ 0.17	$ 0.07
Diluted	$ 0.17	$ 0.06
Weighted average shares outstanding:
Basic	194,068	191,642
Diluted	199,140	195,456
Comprehensive income:
Net income	$ 33,562	$ 12,580
Other comprehensive income, net of tax:
Foreign currency translation gain	40,351	46,284
Pension and other postretirement benefit activity	(369)	(731)
Loss on net investment hedge	(355)
Available-for-sale securities	1,309	(723)
Total other comprehensive income, net of tax	40,936	44,830
Total comprehensive income	$ 74,498	$ 57,410