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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Deferred Charges and Other Assets, Net) (Details) $ in Millions | 12 Months Ended
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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

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