ACQUISITIONS (Assets and Liabilities Acquired) (Details) - Martinez Acquisition [Member] $ in Millions	Feb. 01, 2020 USD ($)
Business Acquisition [Line Items]
Inventories	$ 224.1
Prepaid and other current assets	5.4
Property, plant and equipment	987.9
Operating lease right of use assets	7.8
Financing lease right of use assets	63.5
Deferred charges and other assets, net	63.7
Accrued expenses	1.4
Current operating lease liabilities	1.9
Current financing lease liabilities (a)	6.0	[1]
Long-term operating lease liabilities	5.9
Long-term financing lease liabilities	57.5
Other long-term liabilities - Environmental obligation	(26.3)
Fair value of net assets acquired	$ 1,253.4

[1] Current financing lease liabilities are recorded in Accrued expenses within the Condensed Consolidated Balance Sheet.