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PROPERTY, PLANT AND EQUIPMENT, NET (Details) $ in Millions		12 Months Ended
PROPERTY, PLANT AND EQUIPMENT, NET (Details) $ in Millions	Apr. 17, 2020 USD ($) hydrogenPlants	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		$ 5,067.4	$ 4,013.7
Less - Accumulated depreciation		(1,044.3)	(845.1)
Property, plant and equipment, net		4,023.1	3,168.6
Depreciation		179.4	140.7	$ 133.1
Impairment Expense		91.8	0.0	0.0
Number of Hydrogen Plants Sold \| hydrogenPlants	5
Sale Leaseback Transaction, Gross Proceeds, Investing Activities	$ 530.0
Gain (Loss) on Disposition of Property Plant Equipment		477.8	29.9	43.1
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property		477.8	29.9	43.1
Air Products and Chemical, Inc.
Property, Plant and Equipment [Line Items]
Sale Leaseback Transaction, Gross Proceeds, Investing Activities	$ 530.0
Gain (Loss) on Disposition of Property Plant Equipment		471.1
East Coast Refining
Property, Plant and Equipment [Line Items]
Impairment Expense		91.8
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		418.8	244.6
Process units, pipelines and equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		4,191.4	3,282.2
Building and leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		106.2	48.0
Computers furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		155.6	134.9
Construction in progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		195.4	304.0
Capitalized interest		11.9	17.6
Construction in progress [Member] \| East Coast Refining \| Idled Processing Units
Property, Plant and Equipment [Line Items]
Impairment Expense		11.9
Construction in progress [Member] \| East Coast Refining \| Capital Projects
Property, Plant and Equipment [Line Items]
Impairment Expense		79.9
Torrance Refinery [Member]
Property, Plant and Equipment [Line Items]
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property		$ (8.1)	$ (33.1)	$ (43.8)