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Goodwill and Other Intangible Assets - Intangible Assets and Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 2,256,138		$ 2,277,349
Accumulated amortization	1,312,871		1,290,419
Finite-Lived Intangible Assets, Net	943,267		986,930
Intangible Assets, Gross (Excluding Goodwill)	2,352,928		2,374,191
Intangible assets, net	1,040,057		1,083,772
Amortization expense	35,612	$ 34,197
Acquisition-related amortization expense	35,173	$ 33,817
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	0		0
Customer Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	1,545,214		1,559,771
Accumulated amortization	851,227		834,798
Finite-Lived Intangible Assets, Net	693,987		724,973
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	231,560		233,205
Accumulated amortization	107,093		103,907
Finite-Lived Intangible Assets, Net	124,467		129,298
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	162,185		163,299
Accumulated amortization	141,440		141,182
Finite-Lived Intangible Assets, Net	20,745		22,117
Unpatented Technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	179,039		180,947
Accumulated amortization	115,129		113,404
Finite-Lived Intangible Assets, Net	63,910		67,543
Distributor Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	86,108		87,028
Accumulated amortization	52,474		51,611
Finite-Lived Intangible Assets, Net	33,634		35,417
Drawings and Manuals [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	28,135		29,198
Accumulated amortization	25,851		26,193
Finite-Lived Intangible Assets, Net	2,284		3,005
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	23,897		23,901
Accumulated amortization	19,657		19,324
Finite-Lived Intangible Assets, Net	$ 4,240		$ 4,577

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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