Acquisitions and Divestitures - Narrative (Details) $ in Thousands, € in Millions								12 Months Ended
	Jul. 23, 2018 USD ($)	Dec. 08, 2017 USD ($)	Aug. 31, 2016 EUR (€)	Aug. 31, 2016 USD ($)	Jul. 01, 2016 EUR (€)	Jul. 01, 2016 USD ($)	Mar. 16, 2016 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Business Acquisition [Line Items]
Contingent consideration								$ 3,375
Goodwill								1,697,955	$ 1,704,158	$ 1,632,592
Intangible assets				$ 217,700
Acquisition related costs								3,000
Indefinite-lived Intangible assets acquired										28,800
Selling, general and administrative expenses
Business Acquisition [Line Items]
Acquisition related costs									$ 1,300	$ 4,700
Cost of goods sold
Business Acquisition [Line Items]
Fair value of inventory charges associated with acquisitions								$ 14,700
Finger Lakes Instrumentation (FLI)
Business Acquisition [Line Items]
Aggregate purchase price	$ 23,600
Business combination, cash consideration paid	20,200
Contingent consideration	$ 3,400
Contingent consideration arrangements, period	24 months
Goodwill	$ 12,400
Intangible assets	$ 7,900
thinXXS
Business Acquisition [Line Items]
Business combination, cash consideration paid		$ 38,200
Goodwill		25,200
Intangible assets		10,600
Debt assumed		$ 1,200
Akron Brass
Business Acquisition [Line Items]
Business combination, cash consideration paid							$ 221,400
Goodwill							124,643
Intangible assets							$ 90,400
AWG Fittings
Business Acquisition [Line Items]
Business combination, cash consideration paid					€ 42.8	$ 47,500
Goodwill						22,055
Intangible assets						$ 10,279
SFC-Koenig
Business Acquisition [Line Items]
Business combination, cash consideration paid			€ 215.9	241,100
Goodwill				141,298
Intangible assets				$ 116,998