Other Assets and Liabilities - Other Non-Current Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Schedule of Other Assets and Liabilities [Line Items]
Total	$ 38.5	$ 62.9
Other Non-Current Liabilities
Schedule of Other Assets and Liabilities [Line Items]
Liability, Pension and Other Postretirement and Postemployment Benefits, Noncurrent	16.2	17.6
Tank Inspection Liabilities	9.9	9.9
Liability for unrecognized tax benefits	7.2	19.2
Long-term derivative liabilities (see Note 11)	3.8	1.0
Above Market Lease	0.0	9.2
Other	$ 1.4	$ 6.0