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Inventories (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Inventory Disclosure [Abstract] |  |  |
Finished goods | $ 330,500,000 | $ 331,900,000 |
Work in process | 10,000,000 | 5,500,000 |
Raw materials and repair parts | 229,100,000 | 199,200,000 |
Total | 569,600,000 | 536,600,000 |
Excess of current cost over last-in, first-out cost | (59,800,000) | (52,400,000) |
Total inventories, net | 509,800,000 | 484,200,000 |
Pre-tax income (loss) from LIFO inventory liquidations | 0 | 0 | $ 200,000
Reserve balance obsolete and slow moving inventories | $ 16,500,000 | $ 20,100,000 |

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