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Revenue Recognition (Disaggregation of revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Sales	$ 924,965	$ 990,084	$ 1,819,422	$ 1,880,135
Original Equipment
Disaggregation of Revenue [Line Items]
Sales	462,776	492,552	915,071	912,402
Aftermarket
Disaggregation of Revenue [Line Items]
Sales	462,189	497,532	904,351	967,733
FPD
Disaggregation of Revenue [Line Items]
Sales	673,554	673,966	1,308,679	1,282,725
FPD | Original Equipment
Disaggregation of Revenue [Line Items]
Sales	271,465	243,625	524,197	449,429
FPD | Aftermarket
Disaggregation of Revenue [Line Items]
Sales	402,089	430,341	784,482	833,296
FCD
Disaggregation of Revenue [Line Items]
Sales	251,411	316,118	510,743	597,410
FCD | Original Equipment
Disaggregation of Revenue [Line Items]
Sales	191,311	248,927	390,874	462,973
FCD | Aftermarket
Disaggregation of Revenue [Line Items]
Sales	60,100	67,191	119,869	134,437
North America
Disaggregation of Revenue [Line Items]
Sales	376,347	404,452	766,997	787,380
North America | FPD
Disaggregation of Revenue [Line Items]
Sales	269,610	269,737	537,135	517,506
North America | FCD
Disaggregation of Revenue [Line Items]
Sales	106,737	134,715	229,862	269,874
Latin America
Disaggregation of Revenue [Line Items]
Sales	53,814	55,864	101,511	99,266
Latin America | FPD
Disaggregation of Revenue [Line Items]
Sales	46,909	45,771	89,096	83,373
Latin America | FCD
Disaggregation of Revenue [Line Items]
Sales	6,905	10,093	12,415	15,893
Middle East And Africa
Disaggregation of Revenue [Line Items]
Sales	118,427	110,219	242,260	207,473
Middle East And Africa | FPD
Disaggregation of Revenue [Line Items]
Sales	96,740	87,344	193,908	161,710
Middle East And Africa | FCD
Disaggregation of Revenue [Line Items]
Sales	21,687	22,875	48,352	45,763
Asia Pacific
Disaggregation of Revenue [Line Items]
Sales	192,601	207,395	360,557	378,555
Asia Pacific | FPD
Disaggregation of Revenue [Line Items]
Sales	128,102	124,206	240,557	238,154
Asia Pacific | FCD
Disaggregation of Revenue [Line Items]
Sales	64,499	83,189	120,000	140,401
Europe
Disaggregation of Revenue [Line Items]
Sales	183,776	212,154	348,097	407,461
Europe | FPD
Disaggregation of Revenue [Line Items]
Sales	132,193	146,908	247,983	281,982
Europe | FCD
Disaggregation of Revenue [Line Items]
Sales	$ 51,583	$ 65,246	$ 100,114	$ 125,479

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+ References

No definition available.

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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