SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Deferred Charges and Other Assets, Net) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($)
Finite-Lived Intangible Assets [Line Items]
Accelerated Amortization, Deferred Turnaround Costs	$ 56.2
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Refinery turnaround amortization period	3 years
Amortization over life of loan	1 year
Intangible assets estimated useful lives	1 year
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Refinery turnaround amortization period	6 years
Amortization over life of loan	8 years
Intangible assets estimated useful lives	10 years