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Restructuring Activities - Narratives (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Restructuring Cost and Reserve |  |  |  |
Restructuring costs | $ 4.4 | $ 0.6 | $ 11.8 | $ 1.5
Property, plant and equipment impairment and disposals | (0.7) |  | (5.6) |
Operating Segments | Energy & Chemicals |  |  |  |
Restructuring Cost and Reserve |  |  |  |
Restructuring costs | (1.1) | 0.2 | 3.4 | 0.4
Property, plant and equipment impairment and disposals | 1.6 |  | (1.6) |
Expected restructuring charges | 0.4 |  | 0.4 |
Operating Segments | D&S East |  |  |  |
Restructuring Cost and Reserve |  |  |  |
Restructuring costs | 5.4 | $ 0.3 | 7.8 | $ 0.5
Property, plant and equipment impairment and disposals | (2.3) |  | (4.0) |
Expected restructuring charges | $ 0.4 |  | $ 0.4 |

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