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Revenue Recognition (Disaggregation of revenue) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Sales	$ 857,308	$ 893,513
Original Equipment
Disaggregation of Revenue [Line Items]
Sales	406,884	451,351
Aftermarket
Disaggregation of Revenue [Line Items]
Sales	450,424	442,162
FPD
Disaggregation of Revenue [Line Items]
Sales	602,166	635,126
FPD | Original Equipment
Disaggregation of Revenue [Line Items]
Sales	214,164	252,732
FPD | Aftermarket
Disaggregation of Revenue [Line Items]
Sales	388,002	382,394
FCD
Disaggregation of Revenue [Line Items]
Sales	255,142	258,387
FCD | Original Equipment
Disaggregation of Revenue [Line Items]
Sales	192,720	198,619
FCD | Aftermarket
Disaggregation of Revenue [Line Items]
Sales	62,422	59,768
North America
Disaggregation of Revenue [Line Items]
Sales	314,222	390,642
North America | FPD
Disaggregation of Revenue [Line Items]
Sales	223,975	267,524
North America | FCD
Disaggregation of Revenue [Line Items]
Sales	90,247	123,118
Latin America
Disaggregation of Revenue [Line Items]
Sales	48,858	47,698
Latin America | FPD
Disaggregation of Revenue [Line Items]
Sales	42,040	42,187
Latin America | FCD
Disaggregation of Revenue [Line Items]
Sales	6,818	5,511
Middle East And Africa
Disaggregation of Revenue [Line Items]
Sales	110,228	123,831
Middle East And Africa | FPD
Disaggregation of Revenue [Line Items]
Sales	82,541	97,168
Middle East And Africa | FCD
Disaggregation of Revenue [Line Items]
Sales	27,687	26,663
Asia Pacific
Disaggregation of Revenue [Line Items]
Sales	203,309	167,018
Asia Pacific | FPD
Disaggregation of Revenue [Line Items]
Sales	124,648	112,455
Asia Pacific | FCD
Disaggregation of Revenue [Line Items]
Sales	78,661	54,563
Europe
Disaggregation of Revenue [Line Items]
Sales	180,691	164,324
Europe | FPD
Disaggregation of Revenue [Line Items]
Sales	128,962	115,792
Europe | FCD
Disaggregation of Revenue [Line Items]
Sales	$ 51,729	$ 48,532

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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