Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 7

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(a)(3))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.13(2))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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Period Type:	instant

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Balance Type:	na
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- Definition

The effective interest rate during the reporting period.

+ References

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Data Type:	num:percentItemType
Balance Type:	na
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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
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- Definition

Indebtedness divided by net capital.

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No definition available.

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- Definition

Weighted average interest rate of short-term debt outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Debt (Narrative) (Details) (USD $)	3 Months Ended
Debt (Narrative) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Feb. 05, 2015	Feb. 04, 2015
Debt Instrument [Line Items]
Commercial Paper	$ 948,000,000us-gaap_CommercialPaper	$ 932,000,000us-gaap_CommercialPaper
Senior Credit Facility [Member]
Debt Instrument [Line Items]
Credit Facility, borrowing capacity	3,000,000,000
Outstanding Credit Facility borrowings	0
Debt-to-capitalization ratio	0.216
EnLink [Member]
Debt Instrument [Line Items]
Outstanding Credit Facility borrowings	709,000,000	237,000,000
EnLink [Member] \| Unsecured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit Facility, borrowing capacity			1,500,000,000	1,000,000,000
Outstanding Credit Facility borrowings	709,000,000
Line of credit facility expiration date	Mar. 06, 2020
Line of credit average interest rate during period	1.65%
Credit Facility, remaining borrowing capacity	788,000,000
EnLink [Member] \| Unsecured Letter Of Credit Subfacility [Member]
Debt Instrument [Line Items]
Outstanding Credit Facility borrowings	2,900,000
General Partner [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit Facility, borrowing capacity	250,000,000
Outstanding Credit Facility borrowings	$ 0
Maximum [Member] \| Senior Credit Facility [Member]
Debt Instrument [Line Items]
Debt-to-capitalization ratio	0.65
Commercial Paper [Member]
Debt Instrument [Line Items]
Average borrowing rate on commercial paper borrowings	0.60%