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Segment and Geographic Area Information (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Business Segments [Abstract]
Number of operating segments									4
Schedule of Segment Reporting Information, by Segment [Line Items]
Net sales	$ 809,910,000	$ 747,641,000	$ 724,872,000	$ 711,066,000	$ 739,204,000	$ 712,705,000	$ 699,871,000	$ 645,309,000	$ 2,993,489,000	$ 2,797,089,000	$ 2,386,112,000
Operating profit	225,242,000	183,257,000	178,784,000	170,304,000	187,354,000	167,215,000	163,970,000	142,000,000	757,587,000	660,539,000	514,294,000
Assets:
Operating assets	933,615,000				848,143,000				933,615,000	848,143,000	790,500,000
Intangible assets, net	5,567,724,000				3,960,568,000				5,567,724,000	3,960,568,000	3,832,293,000
Other	569,765,000				510,706,000				569,765,000	510,706,000	446,731,000
Total	7,071,104,000				5,319,417,000				7,071,104,000	5,319,417,000	5,069,524,000
Capital expenditures									38,405,000	40,702,000	28,591,000
Depreciation and other amortization									154,748,000	140,143,000	123,021,000
Schedule of Entity Wide Information About Geographic Areas [Line Items]
Sales to unaffiliated customers									2,993,489,000	2,797,089,000	2,386,112,000
Sales between geographic areas									0	0	0
Net sales	809,910,000	747,641,000	724,872,000	711,066,000	739,204,000	712,705,000	699,871,000	645,309,000	2,993,489,000	2,797,089,000	2,386,112,000
Long Lived Assets	160,717,000				171,128,000				160,717,000	171,128,000	133,981,000
Export sales [Abstract]
Export sales from the United States									459,000,000	410,000,000	358,000,000
Geographic Areas, Revenues from External Customers [Abstract]
Minimum percent of total sales generated in Canada									500.00%
Revenue from External Customers outside the U.S.									1,214,410,000	1,164,354,000	943,503,000
United States[Member]
Schedule of Entity Wide Information About Geographic Areas [Line Items]
Long Lived Assets	125,015,000				135,399,000				125,015,000	135,399,000	104,147,000
United States[Member] | Sales [Member]
Schedule of Segment Reporting Information, by Segment [Line Items]
Net sales									2,315,307,000	2,138,877,000	1,883,999,000
Schedule of Entity Wide Information About Geographic Areas [Line Items]
Sales to unaffiliated customers									2,174,443,000	1,985,756,000	1,758,797,000
Sales between geographic areas									140,864,000	153,121,000	125,202,000
Net sales									2,315,307,000	2,138,877,000	1,883,999,000
Canada [Member]
Export sales [Abstract]
Export sales from the United States (in hundredths)									16.00%
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									202,550,000	166,174,000	122,614,000
Non-U.S. [Member]
Schedule of Segment Reporting Information, by Segment [Line Items]
Net sales									930,859,000	1,040,916,000	801,580,000
Schedule of Entity Wide Information About Geographic Areas [Line Items]
Sales to unaffiliated customers									819,046,000	811,333,000	627,315,000
Sales between geographic areas									111,813,000	229,583,000	174,265,000
Net sales									930,859,000	1,040,916,000	801,580,000
Long Lived Assets	35,702,000				35,729,000				35,702,000	35,729,000	29,834,000
Europe [Member]
Export sales [Abstract]
Export sales from the United States (in hundredths)									21.00%
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									478,032,000	510,889,000	417,555,000
Eliminations [Member]
Schedule of Segment Reporting Information, by Segment [Line Items]
Net sales									(252,677,000)	(382,704,000)	(299,467,000)
Schedule of Entity Wide Information About Geographic Areas [Line Items]
Sales to unaffiliated customers									0	0	0
Sales between geographic areas									(252,677,000)	(382,704,000)	(299,467,000)
Net sales									(252,677,000)	(382,704,000)	(299,467,000)
Long Lived Assets
Asia [Member]
Export sales [Abstract]
Export sales from the United States (in hundredths)									35.00%
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									315,217,000	281,298,000	234,058,000
Middle East [Member]
Export sales [Abstract]
Export sales from the United States (in hundredths)									13.00%
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									86,450,000	82,224,000	65,957,000
Rest of the World [Member]
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									132,161,000	123,769,000	103,319,000
South America [Member]
Export sales [Abstract]
Export sales from the United States (in hundredths)									6.00%
Other Geographical Area [Member]
Export sales [Abstract]
Export sales from the United States (in hundredths)									9.00%
Industrial Technology [Member]
Schedule of Segment Reporting Information, by Segment [Line Items]
Net sales									795,240,000	737,356,000	607,564,000
Operating profit									244,691,000	208,188,000	162,009,000
Assets:
Operating assets	225,620,000				219,180,000				225,620,000	219,180,000	179,458,000
Intangible assets, net	590,175,000				597,769,000				590,175,000	597,769,000	610,542,000
Other	100,102,000				32,054,000				100,102,000	32,054,000	54,822,000
Capital expenditures									14,030,000	11,153,000	8,849,000
Depreciation and other amortization									21,754,000	23,119,000	23,660,000
Schedule of Entity Wide Information About Geographic Areas [Line Items]
Net sales									795,240,000	737,356,000	607,564,000
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									311,190,000	280,298,000	210,858,000
Industrial Technology [Member] | Canada [Member]
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									94,035,000	64,864,000	44,678,000
Industrial Technology [Member] | Europe [Member]
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									104,105,000	110,656,000	91,815,000
Industrial Technology [Member] | Asia [Member]
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									75,113,000	67,093,000	49,232,000
Industrial Technology [Member] | Middle East [Member]
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									3,846,000	3,964,000	2,805,000
Industrial Technology [Member] | Rest of the World [Member]
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									34,091,000	33,721,000	22,328,000
Energy Systems And Controls [Member]
Schedule of Segment Reporting Information, by Segment [Line Items]
Net sales									646,116,000	597,802,000	503,897,000
Operating profit									179,824,000	157,960,000	120,427,000
Assets:
Operating assets	199,016,000				194,527,000				199,016,000	194,527,000	166,554,000
Intangible assets, net	555,667,000				535,606,000				555,667,000	535,606,000	518,849,000
Other	80,230,000				64,753,000				80,230,000	64,753,000	62,637,000
Capital expenditures									5,532,000	6,889,000	3,466,000
Depreciation and other amortization									19,671,000	18,177,000	18,472,000
Schedule of Entity Wide Information About Geographic Areas [Line Items]
Net sales									646,116,000	597,802,000	503,897,000
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									426,334,000	414,735,000	352,665,000
Energy Systems And Controls [Member] | Canada [Member]
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									39,836,000	39,547,000	27,360,000
Energy Systems And Controls [Member] | Europe [Member]
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									148,360,000	148,767,000	135,019,000
Energy Systems And Controls [Member] | Asia [Member]
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									121,997,000	118,565,000	100,094,000
Energy Systems And Controls [Member] | Middle East [Member]
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									47,866,000	44,792,000	34,912,000
Energy Systems And Controls [Member] | Rest of the World [Member]
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									68,275,000	63,064,000	55,280,000
Medical and Scientific Imaging [Member]
Schedule of Segment Reporting Information, by Segment [Line Items]
Net sales									703,835,000	610,617,000	548,718,000
Operating profit									187,246,000	148,376,000	130,558,000
Assets:
Operating assets	232,527,000				176,893,000				232,527,000	176,893,000	170,955,000
Intangible assets, net	2,631,085,000				971,584,000				2,631,085,000	971,584,000	791,611,000
Other	114,834,000				49,599,000				114,834,000	49,599,000	59,375,000
Capital expenditures									8,253,000	12,498,000	7,269,000
Depreciation and other amortization									50,309,000	34,224,000	27,991,000
Schedule of Entity Wide Information About Geographic Areas [Line Items]
Net sales									703,835,000	610,617,000	548,718,000
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									319,140,000	292,915,000	241,787,000
Medical and Scientific Imaging [Member] | Canada [Member]
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									21,308,000	21,127,000	15,306,000
Medical and Scientific Imaging [Member] | Europe [Member]
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									161,075,000	162,725,000	126,116,000
Medical and Scientific Imaging [Member] | Asia [Member]
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									111,642,000	86,807,000	79,343,000
Medical and Scientific Imaging [Member] | Middle East [Member]
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									4,613,000	5,062,000	5,853,000
Medical and Scientific Imaging [Member] | Rest of the World [Member]
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									20,500,000	17,194,000	15,169,000
RF Technology [Member]
Schedule of Segment Reporting Information, by Segment [Line Items]
Net sales									848,298,000	851,314,000	725,933,000
Operating profit									223,335,000	202,877,000	150,711,000
Assets:
Operating assets	251,721,000				237,719,000				251,721,000	237,719,000	256,016,000
Intangible assets, net	1,790,797,000				1,855,609,000				1,790,797,000	1,855,609,000	1,911,291,000
Other	51,044,000				31,911,000				51,044,000	31,911,000	40,913,000
Capital expenditures									9,765,000	9,634,000	8,976,000
Depreciation and other amortization									62,629,000	64,329,000	52,709,000
Schedule of Entity Wide Information About Geographic Areas [Line Items]
Net sales									848,298,000	851,314,000	725,933,000
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									157,746,000	176,406,000	138,193,000
RF Technology [Member] | Canada [Member]
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									47,371,000	40,636,000	35,270,000
RF Technology [Member] | Europe [Member]
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									64,492,000	88,741,000	64,605,000
RF Technology [Member] | Asia [Member]
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									6,465,000	8,833,000	5,389,000
RF Technology [Member] | Middle East [Member]
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									30,125,000	28,406,000	22,387,000
RF Technology [Member] | Rest of the World [Member]
Geographic Areas, Revenues from External Customers [Abstract]
Revenue from External Customers outside the U.S.									9,293,000	9,790,000	10,542,000
Corporate [Member]
Schedule of Segment Reporting Information, by Segment [Line Items]
Net sales									0	0	0
Operating profit									(77,509,000)	(56,862,000)	(49,411,000)
Assets:
Operating assets	24,731,000				19,824,000				24,731,000	19,824,000	17,517,000
Intangible assets, net	0				0				0	0	0
Other	223,555,000				332,389,000				223,555,000	332,389,000	228,984,000
Capital expenditures									825,000	528,000	31,000
Depreciation and other amortization									385,000	294,000	189,000
Schedule of Entity Wide Information About Geographic Areas [Line Items]
Net sales									$ 0	$ 0	$ 0

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