Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2022

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

Depreciation is computed using the straight-line method over management's estimated useful lives of the related assets, which are as follows:

	Years
Building and building improvements	15-40
Refinery machinery and equipment	5-40
Pipelines and terminals	15-40
Retail store equipment and site improvements	7-40
Refinery turnaround costs	4-6
Automobiles	3-5
Computer equipment and software	3-10
Furniture and fixtures	5-15
Asset retirement obligation assets	15-50

Property, plant and equipment, at cost, consist of the following (in millions):

	December 31,
	2022		2021
Land	$	60.0	$	57.5
Building and building improvements	110.4		113.6
Refinery machinery and equipment	2,095.4		2,006.1
Pipelines and terminals	1,103.9		637.2
Retail store equipment and site improvements	77.8		61.3
Refinery turnaround costs	485.3		351.2
Other equipment	169.4		152.3
Construction in progress	246.8		266.2
	$	4,349.0	$	3,645.4
Less: accumulated depreciation	(1,572.6)		(1,338.1)
	$	2,776.4	$	2,307.3