DEFERRED CHARGES AND OTHER ASSETS, NET (Tables)

12 Months Ended

Dec. 31, 2024

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of Deferred Charges and Other Assets, Net

Deferred charges and other assets, net consisted of the following:  

(in millions)	December 31, 2024		December 31, 2023
Deferred turnaround costs, net	$	1,082.3	$	855.7
Catalyst, net (a)	190.8		180.1
Environmental credits	42.5		42.5
Linefill	27.4		27.4
Pension plan assets	19.4		18.8
Other	4.8		4.8
Total deferred charges and other assets, net	$	1,367.2	$	1,129.3

(a) Catalyst, net includes $115.0 million and $114.2 million of indefinite-lived precious metal catalysts as of December 31, 2024 and December 31, 2023, respectively.

Schedule of Intangible Assets, Net

Intangible assets, net, included in “Other” above, primarily consists of permits and emission credits. Our net balance as of December 31, 2024 and December 31, 2023 is shown below:

(in millions)	December 31, 2024		December 31, 2023
Intangible assets - gross	$	4.0	$	4.0
Accumulated amortization	(3.5)		(3.5)
Intangible assets - net	$	0.5	$	0.5