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Revenue Recognition (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | $ 256.4 | $ 260.3 | $ 784.3 | $ 792.6
United States |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 131.9 | 131.7 | 400.9 | 394.3
Europe and the former Commonwealth of Independent States |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 51.1 | 61.0 | 163.8 | 205.1
Asia/Pacific (including China) |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 43.1 | 38.2 | 128.7 | 114.0
Latin America |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 13.0 | 13.1 | 39.9 | 40.8
Other foreign countries |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 17.3 | 16.3 | 51.0 | 38.4
Product revenues |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 238.7 | 242.1 | 728.4 | 725.5
Materials conversion revenues |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 15.2 | 15.8 | 47.8 | 60.4
Other revenues |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 2.5 | 2.4 | 8.1 | 6.7
AMS |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 126.1 | 120.8 | 373.3 | 360.1
AMS | United States |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 87.8 | 84.7 | 258.5 | 247.6
AMS | Europe and the former Commonwealth of Independent States |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 12.1 | 10.0 | 38.7 | 36.5
AMS | Asia/Pacific (including China) |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 20.7 | 20.3 | 58.4 | 56.9
AMS | Latin America |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 1.8 | 2.1 | 5.3 | 7.8
AMS | Other foreign countries |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 3.7 | 3.7 | 12.4 | 11.3
AMS | Product revenues |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 122.7 | 117.9 | 362.9 | 346.9
AMS | Materials conversion revenues |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 2.3 | 1.9 | 6.2 | 10.3
AMS | Other revenues |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 1.1 | 1.0 | 4.2 | 2.9
EP |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 130.3 | 139.5 | 411.0 | 432.5
EP | United States |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 44.1 | 47.0 | 142.4 | 146.7
EP | Europe and the former Commonwealth of Independent States |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 39.0 | 51.0 | 125.1 | 168.6
EP | Asia/Pacific (including China) |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 22.4 | 17.9 | 70.3 | 57.1
EP | Latin America |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 11.2 | 11.0 | 34.6 | 33.0
EP | Other foreign countries |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 13.6 | 12.6 | 38.6 | 27.1
EP | Product revenues |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 116.0 | 124.2 | 365.5 | 378.6
EP | Materials conversion revenues |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | 12.9 | 13.9 | 41.6 | 50.1
EP | Other revenues |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total revenues | $ 1.4 | $ 1.4 | $ 3.9 | $ 3.8

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