Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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- Definition

Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Definition

Amount before accumulated amortization of intangible assets, excluding goodwill.

+ References

No definition available.

+ Details

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph ((a)(1),(b))
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

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- References

No definition available.

+ Details

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Intangible Assets and Goodwill, Significant Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Identifiable intangible assets [Abstract]
Gross Value	$ 5,343.5	$ 5,255.1
Accumulated Amortization	(1,735.1)	(1,564.8)
Carrying Value	3,608.4	$ 3,690.3	$ 3,864.1
Customer relationship intangibles [Member]
Identifiable intangible assets [Abstract]
Carrying Value	3,320.0
Customer relationship intangibles [Member] \| EFS Midstream [Member]
Identifiable intangible assets [Abstract]
Gross Value	1,409.8
Accumulated Amortization	(117.0)
Carrying Value	$ 1,292.8
Weighted Average Remaining Amortization Period	23 years 4 months 24 days
Customer relationship intangibles [Member] \| State Line and Fairplay [Member]
Identifiable intangible assets [Abstract]
Gross Value	$ 895.0
Accumulated Amortization	(183.2)
Carrying Value	$ 711.8
Weighted Average Remaining Amortization Period	28 years 2 months 12 days
Customer relationship intangibles [Member] \| San Juan Gathering [Member]
Identifiable intangible assets [Abstract]
Gross Value	$ 331.3
Accumulated Amortization	(227.7)
Carrying Value	$ 103.6
Weighted Average Remaining Amortization Period	20 years 9 months 18 days
Customer relationship intangibles [Member] \| Encinal [Member]
Identifiable intangible assets [Abstract]
Gross Value	$ 132.9
Accumulated Amortization	(103.5)
Carrying Value	$ 29.4
Weighted Average Remaining Amortization Period	8 years
Customer relationship intangibles [Member] \| Oiltanking Partners L.P. [Member]
Identifiable intangible assets [Abstract]
Gross Value	$ 1,192.5
Accumulated Amortization	(86.1)
Carrying Value	$ 1,106.4
Weighted Average Remaining Amortization Period	25 years
Contract-based intangibles [Member]
Identifiable intangible assets [Abstract]
Carrying Value	$ 291.5
Contract-based intangibles [Member] \| Oiltanking Partners L.P. [Member]
Identifiable intangible assets [Abstract]
Gross Value	293.3
Accumulated Amortization	(221.1)
Carrying Value	$ 72.2
Weighted Average Remaining Amortization Period	4 years
Contract-based intangibles [Member] \| Jonah Gas Gathering [Member]
Identifiable intangible assets [Abstract]
Gross Value	$ 224.4
Accumulated Amortization	(166.3)
Carrying Value	$ 58.1
Weighted Average Remaining Amortization Period	23 years
Contract-based intangibles [Member] \| Delaware Basin Gas Processing LLC [Member]
Identifiable intangible assets [Abstract]
Gross Value	$ 82.6
Accumulated Amortization	(6.4)
Carrying Value	$ 76.2
Weighted Average Remaining Amortization Period	8 years