REVENUES (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Product Information [Line Items]
Revenues	$ 27,202.0	$ 15,045.0	$ 24,468.9
Deferred revenue	40.3	45.1
Gasoline and Distillates [Member]
Product Information [Line Items]
Revenues	23,489.5	12,799.4	21,278.4
Feedstocks and other [Member]
Product Information [Line Items]
Revenues	1,310.1	935.5	806.9
Asphalt and blackoils [Member]
Product Information [Line Items]
Revenues	1,217.8	777.9	1,426.4
Chemicals [Member]
Product Information [Line Items]
Revenues	889.8	351.5	682.3
Lubricants [Member]
Product Information [Line Items]
Revenues	$ 294.8	$ 180.7	$ 274.9