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Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Summary of Property, Plant and Equipment

												December 31, 2020												December 31, 2019
(Millions of dollars)						Estimated Useful Life						Cost						Net						Cost						Net
Land												$	609.5					$	609.5					$	598.6					$	598.6
Pipeline and terminal facilities						16 to 25 years						79.8						43.5						77.5						43.7
Retail gasoline stations						3 to 50 years						2,179.7						1,123.2						2,034.4						1,073.6
Buildings						20 to 45 years						66.7						48.5						60.5						44.9
Other						3 to 20 years						123.3						42.9						115.5						46.5
												$	3,059.0					$	1,867.6					$	2,886.5					$	1,807.3

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- References

No definition available.

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- Definition

Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(13))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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