INVENTORIES (Tables)

6 Months Ended

12 Months Ended

Jun. 30, 2020

Dec. 31, 2019

Inventory Disclosure [Abstract]

Schedule of Inventory

Inventories consisted of the following:

June 30, 2020
(in millions)	Titled Inventory			Inventory Intermediation Agreements			Total
Crude oil and feedstocks	$	1,254.0		$	—		$	1,254.0
Refined products and blendstocks		1,056.3			277.2			1,333.5
Warehouse stock and other		135.7			—			135.7
	$	2,446.0		$	277.2		$	2,723.2
Lower of cost or market adjustment		(965.7	)		(137.3	)		(1,103.0	)
Total inventories	$	1,480.3		$	139.9		$	1,620.2

December 31, 2019
(in millions)	Titled Inventory			Inventory Intermediation Agreements			Total
Crude oil and feedstocks	$	1,071.4		$	2.7		$	1,074.1
Refined products and blendstocks		976.0			352.9			1,328.9
Warehouse stock and other		120.8			—			120.8
	$	2,168.2		$	355.6		$	2,523.8
Lower of cost or market adjustment		(324.8	)		(76.8	)		(401.6	)
Total inventories	$	1,843.4		$	278.8		$	2,122.2

Inventories consisted of the following:

December 31, 2019
(in millions)	Titled Inventory			Inventory Intermediation Agreements			Total
Crude oil and feedstocks	$	1,071.4		$	2.7		$	1,074.1
Refined products and blendstocks		976.0			352.9			1,328.9
Warehouse stock and other		120.8			—			120.8
	$	2,168.2		$	355.6		$	2,523.8
Lower of cost or market adjustment		(324.8	)		(76.8	)		(401.6	)
Total inventories	$	1,843.4		$	278.8		$	2,122.2

December 31, 2018
(in millions)	Titled Inventory			Inventory Intermediation Agreements			Total
Crude oil and feedstocks	$	1,044.8		$	—		$	1,044.8
Refined products and blendstocks		1,026.9			334.8			1,361.7
Warehouse stock and other		109.4			—			109.4
	$	2,181.1		$	334.8		$	2,515.9
Lower of cost or market adjustment		(557.2	)		(94.6	)		(651.8	)
Total inventories	$	1,623.9		$	240.2		$	1,864.1