Acquisitions and Divestitures - Acquisitions (Details) - USD ($) $ in Thousands						1 Months Ended	12 Months Ended
	Nov. 23, 2020	Feb. 28, 2020	Sep. 03, 2019	Jul. 18, 2019	Jul. 23, 2018	Apr. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2020
Business Acquisition [Line Items]
Goodwill							$ 1,895,574	$ 1,779,745	$ 1,697,955
Acquisition-related transaction costs							4,300
Fair value inventory step-up charge associated with acquisition								3,300
Debt acquired with acquisition of business							0	51,130	0
Contingent consideration								3,375
Selling, general and administrative expenses
Business Acquisition [Line Items]
Acquisition-related transaction costs								$ 1,700	$ 3,000
Qualtek
Business Acquisition [Line Items]
Aggregate purchase price, cash paid	$ 1,900
Goodwill	1,100
Goodwill, expected tax deductible amount	$ 1,100
Fair value inventory step-up charge associated with acquisition							100
Flow MD
Business Acquisition [Line Items]
Aggregate purchase price, cash paid		$ 121,200
Goodwill		60,431
Goodwill, expected tax deductible amount		60,400
Intangible assets		$ 53,000
Fair value inventory step-up charge associated with acquisition							$ 4,100
Velcora Holding AB
Business Acquisition [Line Items]
Aggregate purchase price, cash paid					$ 87,200
Goodwill				$ 86,613
Intangible assets				48,183
Debt acquired with acquisition of business				$ 51,100
Loss on extinguishment of debt			$ 700
FLI
Business Acquisition [Line Items]
Aggregate purchase price, cash paid					20,200
Goodwill					12,400
Goodwill, expected tax deductible amount					12,400
Intangible assets					7,900
Consideration transferred					23,600
Contingent consideration					$ 3,400					$ 3,000
Contingent consideration arrangements, period					24 months
Contingent consideration paid						$ 3,000