REVENUES (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Revenues	$ 7,173.3	$ 3,649.2	$ 18,969.7	$ 11,408.3
Deferred revenue	39.6		39.6		$ 45.1
Gasoline And Distillate [Member]
Revenues	6,143.4	3,121.8	16,364.1	9,728.1
Asphalt and Residual Oil [Member]
Revenues	329.2	206.5	843.0	577.6
Feedstocks and other [Member]
Revenues	380.3	196.4	883.2	723.0
Chemicals [Member]
Revenues	240.7	81.7	665.8	240.0
Lubricants [Member]
Revenues	$ 79.7	$ 42.8	$ 213.6	$ 139.6