v3.20.1

Leases (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Leases [Abstract]
Operating Leases, Rent Expense, Net		$ 42.1	$ 34.8
Operating Leases, Income Statement, Contingent Revenue		$ 51.8	$ 24.9
Operating Lease, Variable Lease Income	$ 58.4
Processing Equipment [Member]
Property, Plant and Equipment [Line Items]
Operating lease, right-of-use asset, gross	231.2
Storage Tanks [Member]
Property, Plant and Equipment [Line Items]
Operating lease, right-of-use asset, gross	77.4
Pipelines [Member]
Property, Plant and Equipment [Line Items]
Operating lease, right-of-use asset, gross	49.8
Property, Plant and Equipment, Other Types [Member]
Property, Plant and Equipment [Line Items]
Operating lease, right-of-use asset, gross	$ 32.1

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- Definition

Operating Lease, Right-Of-Use Asset, Gross

+ References

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- Definition

Amount of operating lease income from variable lease payments paid and payable to lessor, excluding amount included in measurement of lease receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 50
-Paragraph 6A
-URI http://asc.fasb.org/extlink&oid=118952077&loc=SL77927221-108306

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 5
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919372-209981

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- Definition

Amount of contingent rental revenue recognized for the period under lease, based on the occurrences of an event or condition.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84164653&loc=d3e41551-112718

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- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

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