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Accounting Policies and Basis of Presentation - Narrative (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2019 USD ($) segment | Mar. 31, 2018 USD ($) | Dec. 31, 2018 USD ($)
Accounting Policies [Abstract] |  |  |
Period of providing high-quality, customer-focused products and support services | 116 years |  |
Net sales | $ | $ 418.0 | $ 386.1 | $ 1,800.0
Number of reportable segments | segment | 3 |  |

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