Commitments and Contingencies, Changes in Environmental Contingencies (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Loss Contingency, Range of Possible Loss, Portion Not Accrued	$ 11.6
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning balance	16.6	$ 17.2	$ 18.6
Additional accruals	1.7	0.3	0.1
Less: expenditures	1.4	0.9	1.5
Ending balance	$ 16.9	$ 16.6	$ 17.2

Total costs accrued as of the balance sheet date for environmental loss contingencies.

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Amount of expense (reversal of expense) which increases (decreases) the accrual for environmental loss contingencies from revisions in estimates to existing obligations. Excludes changes related to business acquisitions, divestitures, or currency movement.

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Amount of cash outflow to settle environmental loss contingencies.

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The difference between the maximum amount of estimated loss and the amount recorded as of the balance sheet date.

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