ACCRUED EXPENSES (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Accrued Expenses:
Inventory-related accruals	$ 536.4	$ 1,103.2
Inventory intermediation agreements	228.7	278.1
Renewable energy credit and emissions obligations	203.1	17.7
Excise and sales tax payable	120.9	98.4
Accrued transportation costs	80.8	88.7
Accrued refinery maintenance and support costs	48.0	16.9
Accrued interest	40.8	6.8
Accrued utilities	39.1	40.1
Accrued salaries and benefits	32.0	77.4
Environmental liabilities	13.2	12.3
Current finance lease liabilities	12.8	6.5
Accrued capital expenditures	10.6	31.0
Customer deposits	8.0	1.8
Other	51.9	12.5
Total accrued expenses	1,426.3	$ 1,791.4
Severance Costs	$ 12.9