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Business Segment (Tables)

9 Months Ended

Sep. 30, 2018

Segment Reporting [Abstract]

Summary of Information by Business Segment

						Three Months Ended
						September 30, 2018								September 30, 2017
		Total Assets at				External				Income				External				Income
(Millions of dollars)		September 30,				Revenues				(Loss)				Revenues				(Loss)
Marketing		$	2,090.0			$	3,788.0			$	54.6			$	3,236.3			$	75.9
Corporate and other assets		235.6				—				(9.6		)		—				(8.0		)
Total		$	2,325.6			$	3,788.0			$	45.0			$	3,236.3			$	67.9

				Nine Months Ended
				September 30, 2018								September 30, 2017
				External				Income				External				Income
(Millions of dollars)				Revenues				(Loss)				Revenues				(Loss)
Marketing				$	10,860.7			$	126.1			$	9,446.8			$	140.1
Corporate and other assets				0.5				10.0				0.2				(19.7		)
Total				$	10,861.2			$	136.1			$	9,447.0			$	120.4

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- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 25
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8813-108599

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 21
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8906-108599

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- References

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