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Revenue Recognition (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 USD ($) | Sep. 27, 2020 USD ($) | Jun. 28, 2020 USD ($) | Mar. 29, 2020 USD ($) | Dec. 31, 2019 USD ($) | Sep. 29, 2019 USD ($) | Jun. 30, 2019 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2020 | Dec. 31, 2020 USD ($) | Dec. 31, 2020 item | Dec. 31, 2020 segment | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of distribution channels | item |  |  |  |  |  |  |  |  |  |  | 4 |  |  |
Number of geographic segments |  |  |  |  |  |  |  |  |  |  | 3 | 3 |  |
Revenue | $ 403.4 | $ 383.9 | $ 338.7 | $ 382.6 | $ 400.3 | $ 394.7 | $ 416.8 | $ 388.7 |  | $ 1,508.6 |  |  | $ 1,600.5 | $ 1,564.9
Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Period of Business Operations |  |  |  |  |  |  |  |  | 140 years |  |  |  |  |
Wholesale |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 912.1 |  |  | 973.7 |
OEM |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 222.3 |  |  | 228.6 |
Specialty |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 290.6 |  |  | 331.1 |
DIY |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 83.6 |  |  | 67.1 |
Residential & Commercial Flow Control |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 786.5 |  |  | 827.5 |
HVAC & Gas Products |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 459.6 |  |  | 498.0 |
Drainage & Water Re-use Products |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 156.3 |  |  | 172.4 |
Water Quality Products |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 106.2 |  |  | 102.6 |
Americas |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 1,025.7 |  |  | 1,084.1 | 1,032.1
Americas | Wholesale |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 580.3 |  |  | 609.5 |
Americas | OEM |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 75.9 |  |  | 83.5 |
Americas | Specialty |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 288.5 |  |  | 326.8 |
Americas | DIY |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 81.0 |  |  | 64.3 |
Americas | Residential & Commercial Flow Control |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 584.6 |  |  | 610.5 |
Americas | HVAC & Gas Products |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 263.9 |  |  | 294.6 |
Americas | Drainage & Water Re-use Products |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 75.8 |  |  | 80.2 |
Americas | Water Quality Products |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 101.4 |  |  | 98.8 |
Europe |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 424.9 |  |  | 451.0 | 467.0
Europe | Wholesale |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 279.0 |  |  | 305.0 |
Europe | OEM |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 143.3 |  |  | 143.2 |
Europe | DIY |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 2.6 |  |  | 2.8 |
Europe | Residential & Commercial Flow Control |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 157.8 |  |  | 171.3 |
Europe | HVAC & Gas Products |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 184.0 |  |  | 188.2 |
Europe | Drainage & Water Re-use Products |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 79.4 |  |  | 88.8 |
Europe | Water Quality Products |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 3.7 |  |  | 2.7 |
APMEA |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 58.0 |  |  | 65.4 | $ 65.8
APMEA | Wholesale |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 52.8 |  |  | 59.2 |
APMEA | OEM |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 3.1 |  |  | 1.9 |
APMEA | Specialty |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 2.1 |  |  | 4.3 |
APMEA | Residential & Commercial Flow Control |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 44.1 |  |  | 45.7 |
APMEA | HVAC & Gas Products |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 11.7 |  |  | 15.2 |
APMEA | Drainage & Water Re-use Products |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | 1.1 |  |  | 3.4 |
APMEA | Water Quality Products |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | $ 1.1 |  |  | $ 1.1 |

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