Other Assets and Liabilities Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Accrued Expenses and Other Current Liabilities [Line Items]
Total	$ 307.7	$ 564.9
Other current liabilities
Accrued Expenses and Other Current Liabilities [Line Items]
Income and other taxes payable	126.0	154.1
Short-term derivative liabilities	16.2	54.4
Interest payable	10.2	13.0
Employee costs	46.5	46.6
Environmental liabilities	3.8	7.2
Product financing agreements	0.0	72.3
RINs Obligation Deficit	11.8	130.8
Accrued utilities	10.6	9.4
Tank inspection liabilities	7.0	10.7
Crude liabilities	42.3	34.5
Other	33.3	31.9
Total	$ 307.7	$ 564.9