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Revenue Recognition (Disaggregation of revenue) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | $ 898,178 | $ 925,012 | $ 1,755,486 | $ 1,818,526
Original Equipment |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | 434,484 | 462,823 | 841,358 | 914,175
Aftermarket |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | 463,694 | 462,189 | 914,128 | 904,351
FPD |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | 617,434 | 673,554 | 1,219,600 | 1,308,680
FPD | Original Equipment |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | 220,387 | 271,465 | 434,541 | 524,198
FPD | Aftermarket |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | 397,047 | 402,089 | 785,059 | 784,482
FCD |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | 280,744 | 251,458 | 535,886 | 509,846
FCD | Original Equipment |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | 214,097 | 191,358 | 406,817 | 389,977
FCD | Aftermarket |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | 66,647 | 60,100 | 129,069 | 119,869
North America |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | 341,729 | 376,347 | 655,950 | 766,997
North America | FPD |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | 243,611 | 269,610 | 467,582 | 537,135
North America | FCD |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | 98,118 | 106,737 | 188,368 | 229,862
Latin America |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | 61,098 | 53,814 | 109,950 | 101,511
Latin America | FPD |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | 52,219 | 46,909 | 94,256 | 89,096
Latin America | FCD |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | 8,879 | 6,905 | 15,694 | 12,415
Middle East And Africa |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | 96,192 | 118,427 | 206,433 | 242,260
Middle East And Africa | FPD |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | 69,662 | 96,740 | 152,207 | 193,908
Middle East And Africa | FCD |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | 26,530 | 21,687 | 54,226 | 48,352
Asia Pacific |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | 208,319 | 192,648 | 411,627 | 359,660
Asia Pacific | FPD |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | 119,375 | 128,102 | 244,027 | 240,557
Asia Pacific | FCD |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | 88,944 | 64,546 | 167,600 | 119,103
Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | 190,840 | 183,776 | 371,526 | 348,098
Europe | FPD |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | 132,567 | 132,193 | 261,528 | 247,984
Europe | FCD |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales | $ 58,273 | $ 51,583 | $ 109,998 | $ 100,114

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