Acquisitions and Divestitures - Additional Information (Details) $ in Thousands, € in Millions													1 Months Ended		3 Months Ended								6 Months Ended	12 Months Ended
	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. 01, 2015 USD ($)	Jul. 01, 2015 USD ($)	Jun. 10, 2015 EUR (€)	Jun. 10, 2015 USD ($)	May 29, 2015 EUR (€)	May 29, 2015 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Jun. 30, 2016 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Business Acquisition [Line Items]
Goodwill			$ 287,996												$ 1,704,158				$ 1,632,592					$ 1,704,158	$ 1,632,592	$ 1,396,529
Intangible assets			217,677
Indefinite-lived Intangible assets acquired																									28,800
Contingent consideration for acquisition																								0	0	4,705
Revenues															$ 585,904	$ 574,490	$ 573,366	$ 553,552	$ 530,419	$ 530,356	$ 549,696	$ 502,572		2,287,312	2,113,043	2,020,668
Selling, general and administrative expenses
Business Acquisition [Line Items]
Acquisition related costs																								1,300	$ 4,700	2,600
Cost of goods sold
Business Acquisition [Line Items]
Fair value of inventory charges associated with acquisitions																								$ 14,700		$ 3,400
thinXXS
Business Acquisition [Line Items]
Business combination, cash consideration paid	$ 38,200
Debt assumed	1,200
Goodwill	23,900
Intangible assets	$ 11,800
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
Novotema
Business Acquisition [Line Items]
Business combination, cash consideration paid											€ 56.0	$ 61,100
Goodwill												34,316
Intangible assets												$ 20,011
Alfa Valvole
Business Acquisition [Line Items]
Business combination, cash consideration paid									€ 99.8	$ 112,600
Goodwill										69,568
Intangible assets										$ 32,058
CPS
Business Acquisition [Line Items]
Business combination, cash consideration paid								$ 19,500
Goodwill								9,739
Intangible assets								12,290
Aggregate purchase price								24,200
Business combination, range of outcomes, value, high								4,700
CPS | Minimum
Business Acquisition [Line Items]
Contingent consideration for acquisition								0
CPS | Maximum
Business Acquisition [Line Items]
Contingent consideration for acquisition								$ 5,500
CPS | Selling, general and administrative expenses
Business Acquisition [Line Items]
Change in amount of contingent consideration, liability													$ (1,000)	$ (3,700)									$ (4,700)
Complementary Product Line
Business Acquisition [Line Items]
Goodwill							$ 700
Aggregate purchase price							$ 1,900