Equity and Distributions, Noncontrolling Interests (Details) - Pascagoula Natural Gas Processing Facility [Member] $ in Millions	6 Months Ended
Jun. 30, 2019 USD ($)
Noncontrolling Interest
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	25.00%
Noncontrolling Interest, Increase from Sale of Parent Equity Interest	$ 36.0

Amount of increase in noncontrolling interest from sale of a portion of the parent's controlling interest.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569655-111683

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration