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Supplemental Financial Statement Information - Schedule of Other Income, Net (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Other Income and Expenses [Abstract]        
Rent and royalty income $ 1.4 $ 0.6 $ 2.8 $ 2.3
Gains from disposal of property, plant and equipment, net 62.3 0.1 90.6 0.5
Net equity (loss) gain on joint ventures (See Note 6) (2.4) 0.2 (8.7) 2.5
Net gain (loss) from sale of businesses (See Note 5) 5.8 0.0 (1.9) 0.0
Gain on joint venture deconsolidation (See Note 6) 0.0 0.0 0.0 15.9
Other 0.1 (0.1) 0.1 1.2
Total other income, net $ 67.2 $ 0.8 $ 82.9 $ 22.4