Other Expense (Income) - Other General Expense, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other Income and Expenses [Abstract]
Provisions for environmental matters - net	$ 23.0	$ 176.3	$ 15.4
Loss on sale or disposition of assets	16.1	12.8	5.5
Total	$ 39.1	$ 189.1	$ 20.9