Segment and Geographic Area Information (Details) $ in Thousands	3 Months Ended									12 Months Ended
	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)		Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2015 USD ($) Segment	Dec. 31, 2014 USD ($)		Dec. 31, 2013 USD ($)
Business Segments [Abstract]
Number of operating segments | Segment										4
Schedule of Segment Reporting Information, by Segment [Line Items]
Net sales	$ 943,640	$ 883,933	$ 889,541	$ 865,281	$ 946,145		$ 884,122	$ 885,175	$ 834,052	$ 3,582,395	$ 3,549,494		$ 3,238,128
Operating profit	278,677	$ 250,371	$ 251,974	$ 246,896	283,749		$ 245,658	$ 246,666	$ 223,400	1,027,918	999,473		842,361
Assets:
Operating assets	945,046				949,239					945,046	949,239		966,463
Intangible assets, net	8,353,722				6,689,420					8,353,722	6,689,420		6,589,134
Other	869,597				761,526					869,597	761,526		613,523
Total	10,168,365				8,400,185					10,168,365	8,400,185		8,169,120
Capital expenditures										36,260	37,644		42,528
Depreciation and other amortization										204,261	197,284		189,190
Medical and Scientific Imaging [Member]
Schedule of Segment Reporting Information, by Segment [Line Items]
Net sales										1,215,318	1,080,309		902,281
Operating profit										441,931	375,867		268,172
Assets:
Operating assets	265,520				232,380					265,520	232,380		237,681
Intangible assets, net	4,451,028				3,842,180					4,451,028	3,842,180		3,682,465
Other	121,461				147,529					121,461	147,529		152,211
Capital expenditures										12,642	11,430		10,231
Depreciation and other amortization										105,928	93,683		85,177
RF Technology [Member]
Schedule of Segment Reporting Information, by Segment [Line Items]
Net sales										1,033,951	950,227		904,363
Operating profit										312,112	271,177		253,532
Assets:
Operating assets	293,004				270,458					293,004	270,458		266,026
Intangible assets, net	2,848,911				1,720,977					2,848,911	1,720,977		1,725,597
Other	117,596				65,636					117,596	65,636		62,576
Capital expenditures										10,758	10,521		10,190
Depreciation and other amortization										56,877	58,702		60,590
Industrial Technology [Member]
Schedule of Segment Reporting Information, by Segment [Line Items]
Net sales										745,381	827,145		779,564
Operating profit										214,538	247,596		223,053
Assets:
Operating assets	182,544				220,115					182,544	220,115		232,505
Intangible assets, net	513,155				557,593					513,155	557,593		583,822
Other	67,832				120,681					67,832	120,681		75,215
Capital expenditures										9,179	10,713		17,043
Depreciation and other amortization										19,912	21,135		21,551
Energy Systems And Controls [Member]
Schedule of Segment Reporting Information, by Segment [Line Items]
Net sales										587,745	691,813		651,920
Operating profit										162,128	203,021		183,679
Assets:
Operating assets	194,898				219,284					194,898	219,284		214,926
Intangible assets, net	540,628				568,670					540,628	568,670		597,250
Other	113,014				223,831					113,014	223,831		167,879
Capital expenditures										3,276	4,634		4,952
Depreciation and other amortization										21,254	23,281		21,353
Corporate [Member]
Schedule of Segment Reporting Information, by Segment [Line Items]
Net sales										0	0		0
Operating profit										(102,791)	(98,188)		(86,075)
Assets:
Operating assets	9,080				7,002					9,080	7,002		15,325
Intangible assets, net	0				0					0	0		0
Other	$ 449,694				$ 203,849	[1]				449,694	203,849	[1]	155,642	[1]
Capital expenditures										405	346		112
Depreciation and other amortization										$ 290	$ 483		$ 519

[1] Other assets have been adjusted due to the adoption of a recent ASU regarding presentation of debt issuance costs (see Note 1). These adjustments were $12,749 and $15,861 for the years ended December 31, 2014 and 2013, respectively.