Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

A summary of our goodwill by segment is as follows (in millions):

		Refining		Logistics		Corporate, Other and Eliminations		Total
Gross goodwill balance		$	801.3	$	27.0	$	—	$	828.3
Accumulated impairment losses		(126.0)		—		—		(126.0)
Balance,	December 31, 2022	675.3		27.0		—		702.3
Goodwill Impairment		—		(14.8)		—		(14.8)
Gross goodwill balance		801.3		27.0		—		828.3
Accumulated impairment losses		(126.0)		(14.8)		—		(140.8)
Balance,	December 31, 2023	675.3		12.2		—		687.5
Goodwill Impairment		(212.2)		—		—		(212.2)
Gross goodwill balance		801.3		27.0		—		828.3
Accumulated impairment losses		(338.2)		(14.8)		—		(353.0)
Balance,	December 31, 2024	$	463.1	$	12.2	$	—	$	475.3

Schedule of Finite-Lived Intangible Assets

A summary of our identifiable intangible assets are as follows (in millions):

	As of December 31, 2024							As of December 31, 2023
	Useful Life	Gross		Accumulated Amortization		Net		Gross		Accumulated Amortization		Net
Intangible Assets subject to amortization:
Supply contract	5 years	$	4.8	$	(0.3)	$	4.5	$	—	$	—	$	—
Third-party fuel supply agreement	10 years	49.0		(36.7)		12.3		49.0		(31.8)		17.2
Rights-of-way	8 - 35 years	15.0		(1.9)		13.1		15.0		(1.1)		13.9
Customer relationships	11 - 13.4 years	234.2		(47.3)		186.9		210.0		(28.7)		181.3
Intangible assets not subject to amortization:
Rights-of-way	Indefinite	90.7				90.7		61.2				61.2
Line space history	Indefinite	12.0				12.0		12.0				12.0
Refinery permits	Indefinite	2.1				2.1		2.1				2.1
Total		$	407.8	$	(86.2)	$	321.6	$	349.3	$	(61.6)	$	287.7

Schedule of Indefinite-Lived Intangible Assets

A summary of our identifiable intangible assets are as follows (in millions):

	As of December 31, 2024							As of December 31, 2023
	Useful Life	Gross		Accumulated Amortization		Net		Gross		Accumulated Amortization		Net
Intangible Assets subject to amortization:
Supply contract	5 years	$	4.8	$	(0.3)	$	4.5	$	—	$	—	$	—
Third-party fuel supply agreement	10 years	49.0		(36.7)		12.3		49.0		(31.8)		17.2
Rights-of-way	8 - 35 years	15.0		(1.9)		13.1		15.0		(1.1)		13.9
Customer relationships	11 - 13.4 years	234.2		(47.3)		186.9		210.0		(28.7)		181.3
Intangible assets not subject to amortization:
Rights-of-way	Indefinite	90.7				90.7		61.2				61.2
Line space history	Indefinite	12.0				12.0		12.0				12.0
Refinery permits	Indefinite	2.1				2.1		2.1				2.1
Total		$	407.8	$	(86.2)	$	321.6	$	349.3	$	(61.6)	$	287.7

Schedule of Amortization Expense

Amortization expense for the next five years is estimated to be as follows (in millions):

2025	$	26.5
2026	$	26.5
2027	$	24.1
2028	$	21.6
2029	$	21.1