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Segment and Geographic Area Information - Narrative (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Jun. 30, 2019 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Sep. 30, 2018 USD ($) | Jun. 30, 2018 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2019 USD ($) segment | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of reportable segments | segment |  |  |  |  |  |  |  |  | 4 |  |
Export sales | $ 1,394.8 | $ 1,354.5 | $ 1,330.3 | $ 1,287.2 | $ 1,376.3 | $ 1,318.7 | $ 1,293.7 | $ 1,202.5 | $ 5,366.8 | $ 5,191.2 | $ 4,607.5
Exports |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Export sales |  |  |  |  |  |  |  |  | 531.8 | 578.0 | 512.5
Asia |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Export sales |  |  |  |  |  |  |  |  | 315.3 | 349.9 | 325.4
Europe |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Export sales |  |  |  |  |  |  |  |  | 646.5 | 680.0 | 596.2
Canada |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Export sales |  |  |  |  |  |  |  |  | 222.4 | 211.3 | 187.1
Middle East |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Export sales |  |  |  |  |  |  |  |  | $ 103.6 | $ 102.1 | $ 112.5
Revenue | Geographic Concentration Risk | Asia | Exports |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Concentration risk percentage |  |  |  |  |  |  |  |  | 33.00% |  |
Revenue | Geographic Concentration Risk | Europe | Exports |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Concentration risk percentage |  |  |  |  |  |  |  |  | 24.00% |  |
Revenue | Geographic Concentration Risk | Canada |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Concentration risk percentage |  |  |  |  |  |  |  |  | 4.00% | 4.00% | 4.00%
Revenue | Geographic Concentration Risk | Canada | Exports |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Concentration risk percentage |  |  |  |  |  |  |  |  | 18.00% |  |
Revenue | Geographic Concentration Risk | Middle East | Exports |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Concentration risk percentage |  |  |  |  |  |  |  |  | 13.00% |  |
Revenue | Geographic Concentration Risk | Other | Exports |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Concentration risk percentage |  |  |  |  |  |  |  |  | 12.00% |  |

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