Goodwill And Other Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Goodwill [Line Items]
Weighted average amortization period	14 years
Amortization expense of intangible assets	$ 28	$ 12
Amortization Expense, Next Five Years	115
General Partner And EnLink [Member]
Goodwill [Line Items]
Goodwill impairments	873
Crude And Condensate [Member] \| General Partner And EnLink [Member]
Goodwill [Line Items]
Goodwill impairments	93
Texas [Member] \| General Partner And EnLink [Member]
Goodwill [Line Items]
Goodwill impairments	473
General Partner [Member] \| General Partner And EnLink [Member]
Goodwill [Line Items]
Goodwill impairments	$ 307

Amortization Expense, Next Five Years

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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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