Fair Value Measurements - Financial Instruments (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Fair Value
Debt issuance costs	$ 24,500,000	$ 26,200,000
Amount outstanding	4,461,400,000	3,574,600,000
Senior unsecured debt	3,500,000,000	3,500,000,000
ENLK credit facility due 2020
Fair Value
Outstanding borrowings	0	0
Carrying Value
Fair Value
Secured term loan receivable	51,100,000	0
Fair Value
Fair Value
Secured term loan receivable	$ 51,100,000	$ 0
EnLink Midstream Partners, LP \| Minimum
Fair Value
Stated interest rate	2.70%	2.70%
EnLink Midstream Partners, LP \| Maximum
Fair Value
Stated interest rate	5.60%	5.60%
EnLink Midstream Partners, LP \| Carrying Value
Fair Value
Long-term debt, including current maturities of long-term debt	$ 4,430,800,000	$ 3,542,100,000
Installment Payables	0	249,500,000
Obligations under capital lease	2,500,000	4,100,000
EnLink Midstream Partners, LP \| Fair Value
Fair Value
Long-term debt, including current maturities of long-term debt	4,065,000,000	3,650,200,000
Installment Payables	0	249,600,000
Obligations under capital lease	2,200,000	3,400,000
ENLC credit facility due 2019
Fair Value
Outstanding borrowings	111,400,000	74,600,000
Amount outstanding	$ 111,400,000	$ 74,600,000

Fair value portion of capital lease obligation.

No definition available.

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- Definition

Fair value portion of installment payable.

+ References

No definition available.

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- Definition

Secured Term Loan Receivable, Fair Value

+ References

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ 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(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-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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-Publisher FASB
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-Section S99
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-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

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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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- 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

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
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