EnLink Midstream Partners (ENLK) 10-Q 5 Aug 15 2015 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Jul. 24, 2015
Document Information [Line Items]
Document Type	10-Q
Document Fiscal Period Focus	Q2
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2,015
Amendment Flag	false
Entity Registrant Name	EnLink Midstream Partners, LP
Entity Central Index Key	1,179,060
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Well-known Seasoned Issuer	Yes
Entity Common Stock, Shares Outstanding		284,429,533
Common Class C [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		6,804,079
Class E Common Unit [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		36,629,888

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 8.1	$ 9.6
Accounts receivable:
Trade, net of allowance for bad debt of $0.4	67.4	139
Accrued revenue and other	379.6	253.3
Related party	110.9	121.6
Fair value of derivative assets	14	16.7
Natural gas and NGLs inventory, prepaid expenses and other	53.3	30.8
Total current assets	633.3	571
Property and equipment, net of accumulated depreciation of $1,585.7 and $1,426.3, respectively	5,550.5	5,042.8
Intangible assets, net of accumulated amortization of $66.3 and $36.5, respectively	840.5	533
Goodwill	2,304.2	2,257.8
Fair value of derivative assets	4.9	10
Investments in unconsolidated affiliates	261.2	270.8
Other assets, net	24.7	16.6
Total assets	9,619.3	8,702
Current liabilities:
Accounts payable and drafts payable	39.1	121.8
Accounts payable to related party	21.6	3
Accrued gas, NGLs, condensate and crude oil purchases	316.3	204.5
Fair value of derivative liabilities	3.5	3
Other current liabilities	164.3	149.8
Total current liabilities	544.8	482.1
Long-term debt	2,827.2	2,022.5
Fair value of derivative liabilities	0.8	2
Asset retirement obligation	12.6	12.4
Other long-term liabilities	75.2	84
Deferred tax liability	77.2	73.1
Redeemable non-controlling interest	6.9	0
Common unitholders (321,058,288 units issued and outstanding at June 30, 2015 and 245,421,549 units issued and outstanding at December 31, 2014)	5,666.8	5,833.3
Class C unitholders (6,804,079 units issued and outstanding at June 30, 2015)	180.8	0
General partner interest (1,594,974 equivalent units outstanding at June 30, 2015 and December 31, 2014)	219.8	180.3
Non controlling interest	7.2	12.3
Total partners' equity	$ 6,074.6	$ 6,025.9
Commitments and Contingencies
Total liabilities and partners’ equity	$ 9,619.3	$ 8,702

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Assets, Noncurrent [Abstract]
Allowance for bad debt	$ 0.4	$ 0
Property and equipment, accumulated depreciation	1,585.7	1,426.3
Intangible assets, accumulated amortization	$ 66.3	$ 36.5
Common Stock, Shares, Issued	321,058,288	245,421,549
General Partners' Capital Account, Units Issued	1,594,974	1,594,974
Other Ownership Interests, Units Outstanding	6,804,079	0

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues:
Product sales	$ 956.2	$ 687.9	$ 1,626.9	$ 901.3
Product sales - affiliates	31.7	0	47.9	436.4
Midstream services	135.9	67.1	238.3	86.2
Midstream services-affiliates	149.5	173.8	300.5	229.3
Gain (loss) on derivative activity	1.2	(1.6)	1.4	(2.9)
Total revenues	1,274.5	927.2	2,215	1,650.3
Operating costs and expenses:
Cost of sales (1)	968.2	661.9	1,625.6	1,200.8
Operating expenses (2)	109.1	73.9	207.6	120.6
General and administrative (3)	27	25.8	68.8	41.3
Depreciation and amortization	97.7	74.5	189	123
Total operating costs and expenses	1,202	836.1	2,091	1,485.7
Operating income	72.5	91.1	124	164.6
Other income (expense):
Interest expense, net of interest income	(22.4)	(13.2)	(41.3)	(18)
Equity in income of equity investment	5.9	4.5	9.7	8.7
Gain on extinguishment of debt	0	0.8	0	0.8
Other income (expense)	0.1	(0.1)	0.6	(0.8)
Total other expense	(16.4)	(8)	(31)	(9.3)
Income from continuing operations before non-controlling interest and income taxes	56.1	83.1	93	155.3
Income tax provision	(0.7)	(1.2)	(1.9)	(20.8)
Net income from continuing operations	55.4	81.9	91.1	134.5
Discontinued Operations:
Income from discontinued operations, net of tax	0	0	0	1
Discontinued operations, net of tax	0	0	0	1
Net income	55.4	81.9	91.1	135.5
Net income (loss) attributable to the non-controlling interest	(0.1)	0.1	0	0.1
Net income attributable to EnLink Midstream Partners, LP	55.5	81.8	91.1	135.4
Predecessor interest in net income (4)	0	0	0	35.5
General partner interest in net income	19.1	43.5	45.6	53.9
Limited partners’ interest in net income attributable to EnLink Midstream Partners, LP	35.7	38.3	44.7	46
Class C partners’ interest in net income attributable to EnLink Midstream Partners, LP	$ 0.7	$ 0	$ 0.8	$ 0
Net income attributable to EnLink Midstream Partners, LP per limited partners' unit:
Basic per common unit	$ 0.12	$ 0.17	$ 0.16	$ 0.20
Diluted per common unit	$ 0.12	$ 0.17	$ 0.16	$ 0.20

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Operations (parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Affiliate purchased gas, NGLs, condensate and crude	$ 968.2	$ 661.9	$ 1,625.6	$ 1,200.8
Affiliate general and administrative expense	27	25.8	68.8	41.3
Affiliated Entity [Member]
Affiliate purchased gas, NGLs, condensate and crude	32	0	39.9	325.8
Operating expenses - affiliates	0.2	0	0.2	5.9
Affiliate general and administrative expense	$ 0.1	$ 1.1	$ 0.1	$ 9.6

Consolidated Statements of Chan

Consolidated Statements of Changes in Partners' Equity - 6 months ended Jun. 30, 2015 - USD ($) shares in Millions, $ in Millions	Total	Common Units	General Partner Interest	Noncontrolling Interest [Member]	Common Class C [Member]
Balance at Dec. 31, 2014	$ 6,025.9	$ 5,833.3	$ 180.3	$ 12.3	$ 0
Balance (Shares) at Dec. 31, 2014		245.4	1.6		0
Increase (Decrease) in Partners' Capital
Issuance of common units	364.1	$ 184.1			$ 180
Issuance of common units for acquisition of Partnership, shares		75.5			6.7
Conversion of restricted units for common units, net of units withheld for taxes	(2.5)	$ (2.5)
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings		0.2
Unit-based compensation	21.4	$ 10.5	$ 10.9
Contribution from Devon	28.8	28.8
Distribution To Affiliate	(171)	(171)
Distributions	(211.6)	(194.6)	(17)
Dividends, Paid-in-kind					0.1
Noncontrolling Interest contributions	7.2			7.2
Distributions to non-controlling interest	(66.5)			(66.5)
Adjustment related to mandatory redemption of E2 non-controlling interest	(5.4)			(5.4)
Redeemable non-controlling interest	(6.9)			(6.9)
Partners' Capital, Other	0	(66.5)		66.5
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	91.1	44.7	45.6	0	$ 0.8
Balance at Jun. 30, 2015	6,074.6	$ 5,666.8	$ 219.8	$ 7.2	$ 180.8
Balance (Shares) at Jun. 30, 2015		321.1	1.6		6.8
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount at Dec. 31, 2014	0
Increase (Decrease) in Temporary Equity
Redeemable Noncontrolling Interest Reclassifications Between Permanen And Temporary Equity	6.9
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount at Jun. 30, 2015	$ 6.9

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Statement of Cash Flows [Abstract]
Net income from continuing operations	$ 91.1	$ 134.5
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	189	123
Accretion expense	0.3	0.3
Gain on extinguishment of debt	0	(0.8)
Deferred tax expense	0	20
Non-cash unit-based compensation	21.4	6.9
(Gain) loss on derivatives recognized in net income	(5)	2.9
Cash settlements on derivatives	11.3	(0.9)
Amortization of debt issue costs	1.4	0.4
Amortization of premium on notes	(1.5)	(1)
Redeemable non-controlling interest expense	(3.3)	0
Distribution of earnings from equity investment	10.3	0.7
Equity in income from equity investments	(9.7)	(8.7)
Changes in assets and liabilities:
Accounts receivable, accrued revenue and other	57.3	5
Natural gas and NGLs inventory, prepaid expenses and other	(18.3)	(15.1)
Accounts payable, accrued gas and crude oil purchases and other accrued liabilities	(52)	(45.8)
Net cash provided by operating activities	292.3	221.4
Cash flows from investing activities:
Additions to property and equipment	(349.2)	(336.7)
Acquisition of business, net of cash acquired	(324.8)	(93.9)
Proceeds from sale of property	0.1	0
Investment in limited liability company	0	(5.7)
Distribution from equity investment company in excess of earnings	8.9	5
Net cash used in investing activities	(665)	(431.3)
Cash flows from financing activities:
Proceeds from borrowings	2,327.4	1,613.7
Payments on borrowings	(1,521.2)	(1,391.5)
Payments on capital lease obligations	(1.6)	(1.2)
Increase (decrease) in drafts payable	(12.4)	8.6
Debt financing costs	(9.5)	(6.2)
Conversion of restricted units, net of units withheld for taxes	(2.5)	0
Proceeds from issuance of common units	4.1	19.9
Proceeds from exercise of unit options	0	0.3
Distributions to non-controlling partners	(66.5)	(51.8)
Contributions by non-controlling partners	7.2	1.2
Distributions to partners	(211.6)	(55.6)
Contributions from Devon	28.8	95.3
Distributions to Devon for net assets acquired (Note 3)	(171)	0
Distributions to Predecessor	0	(22.1)
Net cash provided by financing activities	371.2	210.6
Net cash provided by operating activities	0	5
Net cash used in investing activities	0	(0.6)
Net cash used in financing activities – net distributions to Devon and non-controlling interests	0	(4.4)
Net cash provided by discontinued operations	0	0
Net increase (decrease) in cash and cash equivalents	(1.5)	0.7
Cash and cash equivalents, beginning of period	9.6	0.1
Cash and cash equivalents, end of period	8.1	0.8
Cash paid for interest	44	17.3
Cash paid for income taxes	$ 0.1	$ 6.9

General

General	6 Months Ended
	Jun. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General	(1) General In this report, the term “Partnership,” as well as the terms “our,” “we,” “us” and “its,” are sometimes used as abbreviated references to EnLink Midstream Partners, LP itself or EnLink Midstream Partners, LP together with its consolidated subsidiaries, including the Operating Partnership (as defined below) and Midstream Holdings (as defined below) and their consolidated subsidiaries. The term “Midstream Holdings” is sometimes used to refer to EnLink Midstream Holdings, LP itself or to EnLink Midstream Holdings, LP together with EnLink Midstream Holdings GP, LLC and their subsidiaries. (a) Organization of Business EnLink Midstream Partners, LP is a publicly traded Delaware limited partnership formed in 2002. Our common units are traded on the New York Stock Exchange under the symbol “ENLK.” Our business activities are conducted through our subsidiary, EnLink Midstream Operating, LP, a Delaware limited partnership (the “Operating Partnership”), and the subsidiaries of the Operating Partnership. EnLink Midstream GP, LLC, a Delaware limited liability company, is our general partner (the “General Partner”). Our General Partner manages our operations and activities. Our General Partner is an indirect wholly-owned subsidiary of EnLink Midstream, LLC (“ENLC”). ENLC’s units are traded on the New York Stock Exchange under the symbol “ENLC.” Devon Energy Corporation ("Devon") owns ENLC's managing member and common units which represent approximately 70% of the outstanding limited liability company interests in ENLC. Effective as of March 7, 2014, the Operating Partnership acquired (the “Acquisition”) 50% of the outstanding equity interests in EnLink Midstream Holdings, LP (“Midstream Holdings”) and all of the outstanding equity interests in EnLink Midstream Holdings GP, LLC, the general partner of Midstream Holdings, in exchange for the issuance by the Partnership of 120,542,441 units representing limited partnership interests in the Partnership. At the same time, EnLink Midstream, Inc. (“EMI”), the entity that directly owns our General Partner, became a wholly-owned subsidiary of ENLC (together with the Acquisition, the “business combination”). At the conclusion of the business combination, another wholly-owned subsidiary of ENLC, Acacia Natural Gas Corp. I, Inc. (“Acacia”), owned the remaining 50% of the outstanding equity interests in Midstream Holdings. On February 17, 2015, Acacia contributed a 25% interest in Midstream Holdings (the "February Transferred Interests") to us in a drop down transaction (the "February EMH Drop Down") in exchange for 31,618,311 of our Class D Common Units. On May 27, 2015, Acacia contributed the remaining 25% limited partner interest in Midstream Holdings (the “May Transferred Interests”) to us in a drop down transaction (the "May EMH Drop Down" and together with the February EMH Drop Down, the "EMH Drop Downs") in exchange for 36,629,888 of our Class E Common Units. After giving effect to the EMH Drop-Downs, the Partnership owns 100% of Midstream Holdings. In addition, on April 1, 2015 the Partnership acquired the Victoria Express Pipeline and related truck terminal and storage assets from Devon (the "VEX Interests"). See Note (3) - Acquisitions for further discussion. (b) Nature of Business The Partnership primarily focuses on providing midstream energy services, including gathering, processing, transmission, fractionation, condensate stabilization, and brine services to producers of natural gas, natural gas liquids ("NGLs"), crude oil and condensate. Our gas gathering systems consist of networks of pipelines that collect natural gas from points near producing wells and transport it to larger pipelines for further transmission. Our transmission pipelines primarily receive natural gas from our gathering systems and from third party gathering and transmission systems and deliver natural gas to industrial end-users, utilities and other pipelines. We also have transmission lines that transport NGLs from east Texas and our south Louisiana processing plants to our fractionators in south Louisiana. We operate processing plants that process gas transported to the plants by major interstate pipelines or from our own gathering systems under a variety of arrangements. Our processing plants remove NGLs and CO 2 from a natural gas stream and our fractionators separate the NGLs into separate NGL products, including ethane, propane, iso-butane, normal butane and natural gasoline. We also provide a variety of crude oil and condensate services which include crude oil and condensate gathering and transmission via pipelines, barges, rail and trucking facilities as well as brine disposal services.

Significant Accounting Policies

Significant Accounting Policies	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]	(2) Significant Accounting Policies (a) Basis of Presentation The accompanying condensed consolidated financial statements are prepared in accordance with the instructions to Form 10-Q, are unaudited and do not include all the information and disclosures required by generally accepted accounting principles in the United States of America ("GAAP") for complete financial statements. All adjustments that, in the opinion of management, are necessary for a fair presentation of the results of operations for the interim periods have been made and are of a recurring nature unless otherwise disclosed herein. The results of operations for such interim periods are not necessarily indicative of results of operations for a full year. All significant intercompany balances and transactions have been eliminated in consolidation. Further, the unaudited condensed consolidated financial statements give effect to the business combination and related transactions discussed in Note 1(a) above under the acquisition method of accounting and are treated as a reverse acquisition. Under the acquisition method of accounting, Midstream Holdings was the accounting acquirer in the transactions because its parent company, Devon, obtained control of the Partnership through the indirect control of the General Partner as a result of the business combination. All financial results prior to March 7, 2014 reflect the historical operations of Midstream Holdings and are reflected as Predecessor income in the statement of operations. Additionally, the Partnership’s assets acquired and liabilities assumed by Midstream Holdings in the business combination were recorded at their fair values measured as of the acquisition date, March 7, 2014. The excess of the purchase price over the estimated fair values of the Partnership’s net assets acquired was recorded as goodwill. Financial results subsequent to March 7, 2014 reflect the combined operations of Midstream Holdings and the Partnership, which give effect to new contracts entered into with Devon and include the legacy Partnership assets. Certain assets were not contributed to Midstream Holdings from the Predecessor and the operations of such non contributed assets have been presented as discontinued operations. In conjunction with the business combination, Midstream Holdings became a non-taxable entity which was treated as a reorganization under common control with the removal of historical deferred taxes reflected through equity. During the fourth quarter of 2014 and the first half of 2015, the Partnership acquired assets from ENLC and Devon through drop down transactions. Due to ENLC's control of the Partnership through its ownership and control of the General Partner and Devon's control of the Partnership through its ownership of the managing member of ENLC, each acquisition from ENLC and Devon was considered a transfer of net assets between entities under common control. As such, the Partnership was required to recast its historical financial statements to include the activities of such assets from the date that these entities were under common control. The consolidated financial statements for periods prior to the Partnership’s acquisition of the assets from ENLC and Devon have been prepared from ENLC’s and Devon's historical cost-basis accounts for the acquired assets and may not necessarily be indicative of the actual results of operations that would have occurred if the Partnership had owned the acquired assets during the periods reported. Net income attributable to the assets acquired from ENLC and Devon for periods prior to the Partnership’s acquisition is allocated to the general partner. (b) Revenue Recognition The Partnership generates the majority of its revenues from midstream energy services, including gathering, processing, transmission, fractionation, condensate stabilization, and brine services through various contractual arrangements which include fee based contract arrangements or arrangements where it purchases and resells commodities in connection with providing the related service and earns a net margin for its fee. While the Partnership's transactions vary in form, the essential element of each transaction is the use of its assets to transport a product or provide a processed product to an end-user at the tailgate of the plant, barge terminal, or pipeline. The Partnership reflects revenue as Product sales and Midstream services revenue on the Condensed Consolidated Statements of Operations as follows: • Product sales - Product sales represent the sale of natural gas, NGLs, crude oil and condensate where the product is purchased and resold in connection with providing the Partnership's midstream services as outlined above. • Midstream services - Midstream services represents all other revenue generated as a result of performing the Partnership's midstream services outlined above. The Partnership recognizes revenue for sales or services at the time the natural gas, NGLs, crude oil or condensate are delivered or at the time the service is performed at a fixed or determinable price. The Partnership generally accrues one month of sales and the related natural gas, NGL, condensate and crude oil purchases and reverses these accruals when the sales and purchases are actually invoiced and recorded in the subsequent month. Actual results could differ from the accrual estimates. Except for fee based arrangements, the Partnership acts as the principal in these purchase and sale transactions, bearing the risk and reward of ownership as evidenced by title transfer, scheduling the transportation of products and assuming credit risk. The Partnership accounts for taxes collected from customers attributable to revenue transactions and remitted to government authorities on a net basis (excluded from revenues). (c) Redeemable Non-Controlling Interest Non-controlling interests that contain an option for the non-controlling interest holder to require the Partnership to buy out such interests for cash are considered to be redeemable non-controlling interests because the redemption feature is not deemed to be a freestanding financial instrument and because the redemption is not solely within the control of the Partnership. Redeemable non-controlling interest is not considered to be a component of partners' equity and is reported as temporary equity in the mezzanine section on the Condensed Consolidated Balance Sheets. The amount recorded as redeemable non-controlling interest at each balance sheet date is the greater of the redemption value and the carrying value of the redeemable non-controlling interest (the initial carrying value increased or decreased for the non-controlling interest holders' share of net income or loss and distributions). (d) Recent Accounting Pronouncements In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”). ASU 2014-09 will replace existing revenue recognition requirements in GAAP and will require entities to recognize revenue at an amount that reflects the consideration to which the Partnership expects to be entitled in exchange for transferring goods or services to a customer. The new standard will also require significantly expanded disclosures regarding the qualitative and quantitative information of the Partnership's nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period, and is to be applied retrospectively, with early application permitted for annual reporting periods beginning after December 15, 2016. We are currently evaluating the impact the pronouncement will have on our condensed consolidated financial statements and related disclosures. Subject to this evaluation, we have reviewed all recently issued accounting pronouncements that became effective during the six months ended June 30, 2015, and have determined that none would have a material impact on our Condensed Consolidated Financial Statements. In April 2015, the FASB issued ASU 2015-03, Interest – Imputation of Interest: Simplifying the Presentation of Debt Issuance Costs (Topic 835). The update requires debt issuance costs related to a recognized debt liability be presented on the balance sheet as a direct deduction from the carrying amount of that debt liability. The standard requires retrospective application and is effective for us beginning on January 1, 2016. In April 2015, the FASB issued ASU No. 2015-06, Effects on Historical Earnings per Unit of Master Limited Partnership Dropdown Transactions (a Consensus of the FASB Emerging Issues Task Force), which requires a master limited partnership (MLP) to allocate earnings (losses) of a transferred business entirely to the general partner when computing earnings per unit (EPU) for periods before the dropdown transaction occurred. The EPU that the limited partners previously reported would not change as a result of the dropdown transaction. The ASU also requires an MLP to disclose the effects of the dropdown transaction on EPU for the periods before and after the dropdown transaction occurred. ASU 2015-06 is effective for the fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. The ASU requires retrospective application and early adoption is permitted. In February 2015, the FASB issued ASU 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis . The update provides additional guidance to reporting entities in evaluating whether certain legal entities, such as limited partnerships, limited liability corporations and securitization structures, should be consolidated. The update is considered to be an improvement on current accounting requirements as it reduces the number of existing consolidation models. The update is effective for us beginning on January 1, 2016, and we are currently evaluating the impact this standard will have on our consolidated financial statements and related disclosures.

Acquisition

Acquisition	6 Months Ended
	Jun. 30, 2015
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract]
Mergers Acquisitions And Dispositions Disclosures	(3) Acquisitions Chevron Acquisition Effective November 1, 2014, the Partnership acquired, from affiliates of Chevron Corporation, Gulf Coast natural gas pipeline assets predominantly located in southern Louisiana, together with 100% of the equity interests (all of which were voting) in certain entities, for approximately $231.5 million in cash. The natural gas assets include natural gas pipelines spanning from Beaumont, Texas to the Mississippi River corridor and working natural gas storage capacity in southern Louisiana. The transaction was accounted for using the acquisition method, which requires, among other things, that assets acquired and liabilities assumed be recognized at their fair values as of the acquisition date. The following table presents the fair value of the identified assets received and liabilities assumed at the acquisition date. Purchase Price Allocation (in millions): Assets acquired: Property, plant and equipment $ 225.3 Intangibles 13.0 Liabilities assumed: Current liabilities (6.8 ) Total identifiable net assets $ 231.5 The Partnership recognized intangible assets related to customer relationships. The acquired intangible assets will be amortized on a straight-line basis over the estimated customer contract life of approximately 20 years. The purchase price allocation has been prepared on a preliminary basis pending receipt of a final valuation report and is subject to change. We incurred $0.4 million of direct transaction costs for the six months ended June 30, 2015. These costs are included in general and administrative costs in the accompanying Condensed Consolidated Statements of Operations. For the period from January 1, 2015 to June 30, 2015, the Partnership recognized $16.0 million of revenues and $0.1 million of net income related to the assets acquired. LPC Acquisition On January 31, 2015, the Partnership acquired 100% of the equity interests (all of which were voting) of LPC Crude Oil Marketing LLC (“LPC”), which has crude oil gathering, transportation and marketing operations in the Permian Basin, for approximately $100.0 million ( $78.9 million , net of cash acquired). The transaction was accounted for using the acquisition method. The following table presents the fair value of the identified assets received and liabilities assumed at the acquisition date. Purchase Price Allocation (in millions): Assets acquired: Current assets (including $21.1 million in cash) $ 107.4 Property, plant and equipment 29.8 Intangibles 43.2 Goodwill 29.6 Liabilities assumed: Current liabilities (106.0 ) Deferred tax liability (4.0 ) Total identifiable net assets $ 100.0 The Partnership recognized intangible assets related to customer relationships and trade name. The acquired intangible assets related to customer relationships will be amortized on a straight-line basis over the estimated customer contract life of approximately 10 years. The purchase price allocation has been prepared on a preliminary basis pending receipt of a final valuation report and is subject to change. Goodwill recognized from the acquisition primarily relates to the value created from additional growth opportunities and greater operating leverage in the Permian Basin. All such goodwill is allocated to our Crude and Condensate segment and is non-deductible for tax purposes. We incurred $0.2 million of direct transaction costs for the six months ended June 30, 2015. These costs are included in general and administrative costs in the accompanying Condensed Consolidated Statements of Operations. For the period from January 31, 2015 to June 30, 2015, the Partnership recognized $559.6 million of revenues and $1.6 million of net income related to the assets acquired. Coronado Acquisition On March 16, 2015, the Partnership acquired 100% of the equity interests (all of which were voting) in Coronado Midstream Holdings LLC (“Coronado”), which owns natural gas gathering and processing facilities in the Permian Basin, for approximately $602.1 million . The purchase price consisted of $242.1 million in cash ( $232.5 million, net of cash acquired), 6,704,285 common units and 6,704,285 Class C Common Units, both in the Partnership. The following table presents the fair value of the identified assets received and liabilities assumed at the acquisition date. The purchase price allocation has been prepared on a preliminary basis pending receipt of a final valuation report and is subject to change. Purchase Price Allocation (in millions): Assets acquired: Current assets (including $9.6 million in cash) $ 26.2 Property, plant and equipment 302.1 Intangibles 281.0 Goodwill 16.9 Liabilities assumed: Current liabilities (24.1 ) Total identifiable net assets $ 602.1 The Partnership recognized intangible assets related to customer relationships. The acquired intangible assets will be amortized on a straight-line basis over the estimated customer contract life of approximately 10 years. Goodwill recognized from the acquisition primarily relates to the value created from additional growth opportunities and greater operating leverage in the Permian Basin. All such goodwill is allocated to our Texas segment and is non-deductible for tax purposes. We incurred $3.0 million of direct transaction costs for the six months ended June 30, 2015. These costs are included in general and administrative costs in the accompanying Condensed Consolidated Statements of Operations. For the period from March 17, 2015 to June 30, 2015, the Partnership recognized $61.5 million of revenues and $4.1 million of net loss related to the assets acquired. EMH Drop Downs On February 17, 2015, the Partnership acquired an additional 25% limited partner interest in Midstream Holdings from Acacia in the February EMH Drop Down. As consideration for the February Transferred Interests, the Partnership issued 31.6 million Class D Common Units in the Partnership to Acacia with an implied value of $925.0 million. The Class D Common Units were substantially similar in all respects to the Partnership’s common units, except that they received only a pro rata distribution for the fiscal quarter ended March 31, 2015. The Class D Common Units converted into common units on a one-for-one basis on May 4, 2015. On May 27, 2015, the Partnership acquired the remaining 25% limited partner interest in Midstream Holdings from Acacia in the May EMH Drop Down in exchange for 36.6 million Class E Common Units in the Partnership with an implied value of $900.0 million. The Class E Common Units are substantially similar in all respects to the Partnership’s common units, except that they are only entitled to a pro rata distribution for the fiscal quarter ended June 30, 2015. The Class E Common Units converted into common units on a one-for-one basis on August 3, 2015, which was the first business day following the record date for distribution payments with respect to the distribution for the quarter ended June 30, 2015. After giving effect to the EMH Drop Downs, the Partnership owns 100% of Midstream Holdings. The period of common control for EMH began on March 7, 2014, the effective date of the business combination described under "Devon Transaction" below. The Partnership accounted for the acquisition of the EMH Drop Downs from Acacia as a transfer between entities under common control in accordance with ASC 805-50-30. As such, the February Transferred Interests and May Transferred Interests were recorded on the Partnership’s books at historical cost on the date of transfer, which was February 17, 2015 and May 27, 2015, respectively. The “Transfer of interest in Midstream Holdings” presented in the Consolidated Statement of Changes in Partners’ Equity represents the adjustment to equity due to the recast to offset distributions paid to ENLC for its related ownership during the period January 1, 2015 to May 27, 2015. VEX Pipeline Drop Down On April 1, 2015, the Partnership acquired the Victoria Express Pipeline and related truck terminal and storage assets located in the Eagle Ford shale in south Texas, together with 100% of the equity interests (all of which were voting) in certain entities, from Devon in a drop down transaction (the "VEX Drop Down"). The aggregate consideration paid by the Partnership consisted of $171.0 million in cash, 338,159 common units representing limited partner interests in the Partnership with an aggregate value of approximately $9.0 million and the Partnership’s assumption of up to $40.0 million in certain construction costs related to VEX. The VEX pipeline is a multi-grade crude oil pipeline located in the Eagle Ford Shale. Other VEX assets at the destination of the pipeline include a truck unloading terminal, above-ground storage and rights to barge loading docks. The acquisition has been accounted for as an acquisition under common control under ASC 805, resulting in the retrospective adjustment of our prior results. As such, the VEX Interests were recorded on the Partnership's books at historical cost on the date of transfer of $132.7 million. The difference between the historical cost of the net assets and consideration given was $38.3 million and is recognized as a distribution to Devon. The period of common control for VEX began on February 28, 2014, the effective date of the acquisition of the VEX Interests by Devon. E2 Drop Down On October 22, 2014, the Partnership acquired all remaining voting equity interests in E2 Appalachian Compression, LLC and E2 Energy Services, LLC (together “E2”) in a drop down transaction from EMI (the "E2 Drop Down"). The total consideration for the transaction was approximately $194.0 million, including a cash payment of $163.0 million and the issuance of approximately 1.0 million Partnership units (valued at approximately $31.2 million based on the October 22, 2014 closing price of the Partnership's units). This acquisition has been accounted for as an acquisition under common control under ASC 805. The period of common control for E2 began on March 7, 2014, the effective date of the business combination described in "Devon Transaction" below. The following tables present the collective impact of the E2 Drop Down, the VEX Drop Down and the EMH Drop Downs as presented in the Partnership's historical Condensed Consolidated Statements of Operations for the three and six months ended June 30, 2014 and the six months ended June 30, 2015: Six Months Ended June 30, 2015 Partnership Historical EMH VEX Combined (in millions) Revenues $ 2,210.8 $ — $ 4.2 $ 2,215.0 Net income (loss) $ 90.4 $ — $ 0.7 $ 91.1 Net income attributable to non-controlling interest $ 15.3 $ (15.3 ) $ — $ — Net income attributable to EnLink Midstream Partners, $ 75.1 $ 15.3 $ 0.7 $ 91.1 General partner interest in net income $ 29.6 $ 15.3 $ 0.7 $ 45.6 Three Months Ended June 30, 2014 Partnership Historical EMH E2 VEX Combined (in millions) Revenues $ 924.0 $ — $ 3.2 $ — $ 927.2 Net income (loss) $ 84.1 $ — $ (0.1 ) $ (2.1 ) $ 81.9 Net income attributable to non-controlling interest $ 42.7 $ (42.7 ) $ 0.1 $ — $ 0.1 Net income attributable to EnLink Midstream Partners, $ 41.4 $ 42.7 $ (0.2 ) $ (2.1 ) $ 81.8 General partner interest in net income $ 3.1 $ 42.7 $ (0.2 ) $ (2.1 ) $ 43.5 Six Months Ended June 30, 2014 Partnership Historical EMH** E2 VEX** Combined (in millions) Revenues $ 1,646.5 $ — $ 3.8 $ — $ 1,650.3 Net income (loss) $ 138.6 $ — $ (0.1 ) $ (3.0 ) $ 135.5 Net income attributable to non-controlling interest $ 53.1 $ (53.1 ) $ 0.1 $ — $ 0.1 Net income attributable to EnLink Midstream Partners, $ 85.5 $ 53.1 $ (0.2 ) $ (3.0 ) $ 135.4 General partner interest in net income $ 4.0 $ 53.1 $ (0.2 ) $ (3.0 ) $ 53.9 * * Represents the VEX Interests and Transferred Interests amounts for the period from March 7, 2014 through June 30, 2014. Devon Transaction As discussed in Note 1(a), on March 7, 2014, the Partnership acquired, through one of its wholly owned subsidiaries, 50% of the outstanding equity interests in Midstream Holdings and all of the outstanding equity interests in EnLink Midstream Holdings GP, LLC, the general partner of Midstream Holdings, in exchange for the issuance by the Partnership of 120.5 million units representing a new class of limited partnership interests in the Partnership (the “Class B Units”). Midstream Holdings owns midstream assets in the Barnett Shale in North Texas and the Cana-Woodford and Arkoma-Woodford Shales in Oklahoma, as well as a contractual right to the economic burdens and benefits of Devon’s 38.75% interest in Gulf Coast Fractionators (“GCF”) in Mt. Belvieu, Texas. Under the acquisition method of accounting, Midstream Holdings was the acquirer in the business combination because its parent company, Devon, obtained control of the Partnership through the indirect control of the General Partner. Consequently, Midstream Holdings’ assets and liabilities retained their carrying values and the Partnership’s assets acquired and liabilities assumed by Midstream Holdings as the Predecessor in the business combination have been recorded at their fair values measured as of the acquisition date. The excess of the purchase price over the estimated fair values of the Partnership’s net assets acquired has been recorded as goodwill. For the period from March 7, 2014 to June 30, 2014, the Partnership recognized $968.8 million of revenues and $3.2 million of net loss related to the assets acquired in the business combination. Pro Forma Information The following unaudited pro forma condensed financial information for the three and six months ended June 30, 2015 and 2014 gives effect to the business combination, Chevron acquisition, Coronado acquisition, LPC acquisition, EMH Drop Downs, VEX Drop Down and E2 Drop Down as if they had occurred on January 1, 2014. The unaudited pro forma condensed financial information has been included for comparative purposes only and is not necessarily indicative of the results that might have occurred had the transactions taken place on the dates indicated and is not intended to be a projection of future results. Pro forma financial information associated with the business combination and acquisitions is reflected below. Three Months Ended June 30, Six Months Ended June 30, 2014 2015 2014 (in millions) Pro forma total revenues (1) $ 1,453.4 $ 2,337.1 $ 2,833.2 Pro forma net income $ 71.8 $ 85.9 $ 105.6 Pro forma net income attributable to EnLink Midstream Partners, LP $ 71.7 $ 85.9 $ 105.5 Pro forma net income per common unit: Basic $ 0.11 $ 0.14 $ 0.11 Diluted $ 0.11 $ 0.14 $ 0.11 (1) On January 1, 2014, Midstream Holdings entered into gathering and processing agreements with Devon, which are described in Note 5.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	6 Months Ended
	Jun. 30, 2015
Goodwill [Line Items]
Goodwill Disclosure	(4) Goodwill and Intangible Assets Goodwill Goodwill is the cost of an acquisition less the fair value of the net identifiable assets of the acquired business. The Partnership evaluates goodwill for impairment annually as of October 31, and whenever events or changes in circumstances indicate it is more likely than not that the fair value of a reporting unit is less than its carrying amount. The Partnership first assesses qualitative factors to evaluate whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as the basis for determining whether it is necessary to perform the two-step goodwill impairment test. The Partnership may elect to perform the two-step goodwill impairment test without completing a qualitative assessment. If a two-step goodwill impairment test is elected or required, the first step involves comparing the fair value of the reporting unit with its carrying amount. If the carrying amount of a reporting unit exceeds its fair value, the second step of the process involves comparing the implied fair value to the goodwill for that reporting unit. If the carrying value of the goodwill of a reporting unit exceeds the implied fair value of that goodwill, the excess of the carrying value over the implied fair value is recognized as an impairment loss. The Partnership performed its annual impairment test of goodwill as of the fourth quarter of 2014. Based on these assessments, no impairment of goodwill was required. The table below provides a summary of the Partnership’s goodwill, by assigned reporting unit. June 30, 2015 December 31, 2014 (in millions) Texas $ 1,185.0 $ 1,168.2 Louisiana 786.8 786.8 Oklahoma 190.3 190.3 Crude and Condensate 142.1 112.5 Total $ 2,304.2 $ 2,257.8 The change in goodwill is related to an increase of $29.6 million attributable to the acquisition of LPC, which is included in the Crude and Condensate segment, and an increase of $16.9 million attributable to the acquisition of Coronado, which is included in the Texas segment. See Note 3-Acquisitions for further discussion. Intangible Assets Intangible assets associated with customer relationships are amortized on a straight-line basis over the expected period of benefits of the customer relationships, which range from five to twenty years. The following table represents the Partnership's total purchased intangible assets for the periods stated (in millions): Gross Carrying Amount Accumulated Amortization Net Carrying Amount June 30, 2015 Customer relationships $ 906.8 $ (66.3 ) $ 840.5 December 31, 2014 Customer relationships $ 569.5 $ (36.5 ) $ 533.0 The weighted average amortization period for intangible assets is 11.2 years. Amortization expense for intangibles was approximately $18.2 million and $11.3 million for the three months ended June 30, 2015 and 2014, respectively, and $29.7 million and $13.0 million for the six months ended June 30, 2015 and 2014, respectively. The following table summarizes the Partnership's estimated aggregate amortization expense for the next five years (in millions): 2015 (remaining) $ 33.2 2016 66.4 2017 66.4 2018 66.3 2019 65.5 Thereafter 542.7 Total $ 840.5

Affiliate Transactions

Affiliate Transactions	6 Months Ended
	Jun. 30, 2015
Related Party Transactions [Abstract]
Related Party Transactions Disclosure	(5) Affiliate Transactions The Partnership engages in various transactions with Devon and other affiliated entities. For the three and six months ended June 30, 2015 and 2014 , Devon was a significant customer to the Partnership. Devon accounted for 14.2% and 15.7% of the Partnership's revenues for the three and six months ended June 30, 2015, respectively, and 18.7% and 40.3% for the three and six months ended June 30, 2014, respectively. The Partnership had an accounts receivable balance related to transactions with Devon of $112.2 million as of June 30, 2015 and $121.6 million as of December 31, 2014. Additionally, the Partnership had an accounts payable balance related to transactions with Devon of $21.6 million as of June 30, 2015 and $3.0 million as of December 31, 2014. Management believes these transactions are executed on terms that are fair and reasonable and are consistent with terms for transactions with nonaffiliated third parties. The amounts related to affiliate transactions are specified in the accompanying financial statements. Gathering, Processing and Transportation Agreements with Devon As described in Note 1, Midstream Holdings was previously a wholly-owned subsidiary of Devon, and all of its assets were contributed to it by Devon. On January 1, 2014, in connection with the consummation of the business combination, EnLink Midstream Services, LLC, a wholly-owned subsidiary of Midstream Holdings ("EnLink Midstream Services"), entered into 10-year gathering and processing agreements with Devon pursuant to which EnLink Midstream Services provides gathering, treating, compression, dehydration, stabilization, processing and fractionation services, as applicable, for natural gas delivered by Devon Gas Services, L.P., a subsidiary of Devon ("Gas Services"), to Midstream Holdings’ gathering and processing systems in the Barnett, Cana-Woodford and Arkoma-Woodford Shales. On January 1, 2014, SWG Pipeline, L.L.C. (“SWG Pipeline”), another wholly-owned subsidiary of Midstream Holdings, entered into a 10-year gathering agreement with Devon pursuant to which SWG Pipeline provides gathering, treating, compression, dehydration and redelivery services, as applicable, for natural gas delivered by Gas Services to another of the Partnership's gathering systems in the Barnett Shale. These agreements provide Midstream Holdings with dedication of all of the natural gas owned or controlled by Devon and produced from or attributable to existing and future wells located on certain oil, natural gas and mineral leases covering land within the acreage dedications, excluding properties previously dedicated to other natural gas gathering systems not owned and operated by Devon. Pursuant to the gathering and processing agreements entered into on January 1, 2014, Devon has committed to deliver specified average minimum daily volumes of natural gas to Midstream Holdings’ gathering systems in the Barnett, Cana-Woodford and Arkoma-Woodford Shales during each calendar quarter for a five-year period following execution. Devon is entitled to firm service, meaning that if capacity on a system is curtailed or reduced, or capacity is otherwise insufficient, Midstream Holdings will take delivery of as much Devon natural gas as is permitted in accordance with applicable law. The gathering and processing agreements are fee-based, and Midstream Holdings is paid a specified fee per MMBtu for natural gas gathered on Midstream Holdings’ gathering systems and a specified fee per MMBtu for natural gas processed. The particular fees, all of which are subject to an automatic annual inflation escalator at the beginning of each year, differ from one system to another and do not contain a fee redetermination clause. In connection with the closing of the business combination, Midstream Holdings entered into an agreement with a wholly-owned subsidiary of Devon pursuant to which Midstream Holdings provides transportation services to Devon on its Acacia pipeline. Effective December 1, 2014, Gas Services assigned one of its 10-year gathering and processing agreements to Linn Exchange Properties, LLC (“Linn Energy”), which is a subsidiary of Linn Energy, LLC, in connection with Gas Services' divestiture of certain of its southeastern Oklahoma assets. Accordingly, beginning on December 1, 2014, Linn Energy began performing Gas Services' obligations under the applicable agreement, which relates to production dedicated to our Northridge assets in southeastern Oklahoma and remains in full force and effect. Other Commercial Relationships with Devon As noted above, the Partnership continues to maintain a customer relationship with Devon originally established prior to the business combination pursuant to which the Partnership provides gathering, transportation, processing and gas lift services to Devon in exchange for fee-based compensation under several agreements with Devon. The terms of these agreements vary, but the agreements expire between July 2015 and July 2021, renewing automatically for month-to-month or year-to-year periods unless canceled by Devon prior to expiration. In addition, the Partnership has agreements with Devon pursuant to which the Partnership purchases and sells NGLs, gas and crude oil and pays or receives, as applicable, a margin-based fee. These NGL, gas and crude oil purchase and sale agreements have month-to-month terms. VEX Transportation Agreement In connection with the VEX acquisition, the Operating Partnership became party to a five year transportation services agreement with Devon pursuant to which the Operating Partnership provides transportation services to Devon on the VEX pipeline. Transition Services Agreement In connection with the consummation of the business combination, the Partnership entered into a transition services agreement with Devon pursuant to which Devon provides certain services to the Partnership with respect to the business and operations of Midstream Holdings and the Partnership provides certain services to Devon. General and administrative expenses related to the transition service agreement were $0.1 million for the three and six months ended June 30, 2015 and $1.1 million and $1.3 million for the three and six months ended June 30, 2014, respectively. We received $0.2 million from Devon under the transition services agreement for the six months ended June 30, 2015. Substantially all services under the transition services agreement were completed during 2014. Drop Down Transactions During the fourth quarter of 2014 and the first half of 2015, the Partnership acquired assets from ENLC and Devon through drop down transactions. See Note (3) - Acquisitions for further discussion. Predecessor Affiliate Transactions Prior to March 7, 2014, affiliate transactions relate to Predecessor transactions consisting of sales to and from affiliates, services provided by affiliates, cost allocations from affiliates and centralized cash management activities performed by affiliates. The following presents financial information for the Predecessor's affiliate transactions and other transactions with Devon, all of which are settled through an adjustment to equity prior to March 7, 2014 (in millions): Six Months Ended June 30, 2014 Continuing Operations: Revenues - affiliates $ (436.4 ) Operating cost and expenses - affiliates 340.0 Net affiliate transactions (96.4 ) Capital expenditures 21.3 Other third-party transactions, net 53.0 Net third-party transactions 74.3 Net cash distributions to Devon - continuing operations (22.1 ) Non-cash distribution of net assets to Devon (23.2 ) Total net distributions per equity $ (45.3 ) Discontinued operations: Revenues - affiliates $ (10.4 ) Operating costs and expenses - affiliates 5.0 Net affiliate transactions (5.4 ) Capital expenditures 0.6 Other third-party transactions, net 0.4 Net third-party transactions 1.0 Net cash distributions to Devon and non-controlling interests - discontinued operations (4.4 ) Non-cash distribution of net assets to Devon (39.9 ) Total net distributions per equity $ (44.3 ) Total distributions- continuing and discontinued operations $ (89.6 ) Share-based compensation costs included in the management services fee charged to Midstream Holdings by Devon were approximately $2.8 million for the six months ended June 30, 2014 . Pension, postretirement and employee savings plan costs included in the management services fee charged to the Partnership by Devon were approximately $1.6 million for the six months ended June 30, 2014 . These amounts are included in general and administrative expenses in the accompanying statements of operations.

Long-Term Debt

Long-Term Debt	6 Months Ended
	Jun. 30, 2015
Debt Disclosure [Abstract]
Long-Term Debt	(6) Long-Term Debt As of June 30, 2015 and December 31, 2014, long-term debt consisted of the following (in millions): June 30, 2015 December 31, 2014 Partnership credit facility (due 2020), interest based on Prime and/or LIBOR plus an applicable margin, interest rate at June 30, 2015 and December 31, 2014 was 2.3% and 1.9%, respectively $ 150.0 $ 237.0 Senior unsecured notes (due 2019), net of discount of $0.4 million at June 30, 2015 and $0.5 million at December 31, 2014, which bear interest at the rate of 2.70% 399.6 399.5 Senior unsecured notes (due 2022), including a premium of $20.4 million at June 30, 2015 and $21.9 million at December 31, 2014, which bear interest at the rate of 7.125% 182.9 184.4 Senior unsecured notes (due 2024), net of premium of $3.0 million at June 30, 2015 and $3.2 million at December 31, 2014, which bear interest at the rate of 4.40% 553.0 553.2 Senior unsecured notes (due 2025), net of discount of $1.3 million at June 30, 2015, which bear interest at the rate of 4.15% 748.7 — Senior unsecured notes (due 2044), net of discount of $0.3 million at June 30, 2015 and December 31, 2014, which bear interest at the rate of 5.60% 349.7 349.7 Senior unsecured notes (due 2045), net of discount of $7.0 million at June 30, 2015 and $1.7 million at December 31, 2014, which bear interest at the rate of 5.05% 443.0 298.3 Other debt 0.3 0.4 Debt classified as long-term $ 2,827.2 $ 2,022.5 Credit Facility On February 20, 2014, the Partnership entered into a $1.0 billion unsecured revolving credit facility, which includes a $500.0 million letter of credit subfacility (the “Partnership credit facility”). On February 5, 2015, the Partnership exercised the accordion under the Partnership credit facility, increasing the size of the facility to $1.5 billion , and also exercised an option to extend the maturity date of the Partnership credit facility to March 6, 2020. The Partnership also entered into certain amendments to the Partnership credit facility pursuant to which the Partnership is permitted to (1) subject to certain conditions and the receipt of additional commitments by one or more lenders, increase the aggregate commitments under the Partnership credit facility by an additional amount not to exceed $500 million and (2) subject to certain conditions and the consent of the requisite lenders, on two separate occasions extend the maturity date of the Partnership credit facility by one year. The Partnership credit facility contains certain financial, operational and legal covenants. Among other things, these covenants include maintaining a ratio of consolidated indebtedness to consolidated EBITDA (as defined in the Partnership credit facility, which definition includes projected EBITDA from certain capital expansion projects) of no more than 5.0 to 1.0. If the Partnership consummates one or more acquisitions in which the aggregate purchase price is $50.0 million or more, the maximum allowed ratio of consolidated indebtedness to consolidated EBITDA may be increased to 5.5 to 1.0 for the quarter of the acquisition and the three following quarters. Borrowings under the Partnership credit facility bear interest at the Partnership’s option at the Eurodollar Rate (the LIBOR Rate) plus an applicable margin or the Base Rate (the highest of the Federal Funds Rate plus 0.50% , the 30-day Eurodollar Rate plus 1.0% or the administrative agent’s prime rate) plus an applicable margin. The applicable margins vary depending on the Partnership’s credit rating. Upon breach by the Partnership of certain covenants governing the Partnership credit facility, amounts outstanding under the Partnership credit facility, if any, may become due and payable immediately. As of June 30, 2015 , there were $2.9 million in outstanding letters of credit and $150.0 million in outstanding borrowings under the Partnership’s credit facility, leaving approximately $1.3 billion available for future borrowing based on the borrowing capacity of $1.5 billion . All other material terms of the Partnership credit facility are described in Part II, “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations — Indebtedness” in the Partnership’s Annual Report on Form 10-K for the year ended December 31, 2014, as recast by the Partnership's Current Report on Form 8-K dated May 28, 2015. The Partnership expects to be in compliance with all credit facility covenants for at least the next twelve months. On May 12, 2015, the Partnership issued $900.0 million aggregate principal amount of unsecured senior notes, consisting of $750.0 million aggregate principal amount of its 4.150% senior notes due 2025 (the “2025 Notes”) and $150.0 million aggregate principal amount of its 5.050% senior notes due 2045 (the “2045 Notes”) at prices to the public of 99.827% and 96.381% , respectively, of their face value. The 2025 Notes mature on June 1, 2025 and the 2045 Notes mature on April 1, 2045. Interest payments on the 2025 Notes are payable on June 1 and December 1 of each year, beginning December 1, 2015. Interest payments on the 2045 Notes are payable on April 1 and October 1 of each year, beginning October 1, 2015. Prior to March 1, 2025, the 2025 Notes are redeemable, at the option of the Partnership, at any time in whole, or from time to time in part, at a redemption price equal to the greater of: (i) 100% of the principal amount of the 2025 Notes to be redeemed; or (ii) the sum of the present values of the remaining scheduled payments of principal and interest on the 2025 Notes to be redeemed that would be due if the 2025 Notes matured on March 1, 2025 (exclusive of interest accrued to, but excluding, the redemption date) discounted to the redemption date on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the applicable Treasury Rate plus 30 basis points; plus, in either case, accrued and unpaid interest to, but excluding, the redemption date. At any time on or after March 1, 2025, the 2025 Notes are redeemable, at the option of the Partnership, in whole or in part, at a redemption price equal to 100% of the principal amount of the 2025 Notes to be redeemed plus accrued and unpaid interest to, but excluding, the redemption date. Prior to October 1, 2044, the Partnership may redeem all or a part of the 2045 Notes at a redemption price equal to the greater of: (i) 100% of the principal amount of the 2045 Notes to be redeemed; or (ii) the sum of the present values of the remaining scheduled payments of principal and interest on the 2045 Notes to be redeemed that would be due after the related redemption date but for such redemption (exclusive of interest accrued to, but excluding, the redemption date) discounted to the redemption date on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the applicable Treasury Rate plus 30 basis points; plus, in either case, accrued and unpaid interest to, but excluding, the redemption date. At any time on or after October 1, 2044, the Partnership may redeem all or a part of the 2045 Notes at a redemption price equal to 100% of the principal amount of the 2045 Notes to be redeemed plus accrued and unpaid interest to, but excluding, the redemption date. The indentures governing the Senior Notes contain covenants that, among other things, limit our ability to create or incur certain liens or consolidate, merge or transfer all or substantially all of our assets. Each of the following is an event of default under the indentures: • failure to pay any principal or interest when due; • failure to observe any other agreement, obligation or other covenant in the indenture, subject to the cure periods for certain failures; • our default under other indebtedness that exceeds a certain threshold amount; • failure by us to pay final judgments that exceed a certain threshold amount; and • bankruptcy or other insolvency events involving us. If an event of default relating to bankruptcy or other insolvency events occurs, the Senior Notes will immediately become due and payable. If any other event of default exists under the indenture, the trustee under the indenture or the holders of the Senior Notes may accelerate the maturity of the Senior Notes and exercise other rights and remedies.

Partners' Capital Partners Capi

Partners' Capital Partners Capital	6 Months Ended
	Jun. 30, 2015
Partners' Capital [Abstract]
Partners' Capital Disclosure	(7) Partners’ Capital (a) Issuance of Common Units In November 2014, the Partnership entered into an Equity Distribution Agreement (the “BMO EDA”) with BMO Capital Markets Corp., Merrill Lynch, Pierce, Fenner & Smith Incorporated, Citigroup Global Markets Inc., Jefferies LLC, Raymond James & Associates, Inc. and RBC Capital Markets, LLC (collectively, the “Sales Agents”) to sell up to $350.0 million in aggregate gross sales of the Partnership’s common units from time to time through an “at the market” equity offering program. The Partnership may also sell common units to any Sales Agent as principal for the Sales Agent’s own account at a price agreed upon at the time of sale. The Partnership has no obligation to sell any of the common units under the BMO EDA and may at any time suspend solicitation and offers under the BMO EDA. For the six months ended June 30, 2015, the Partnership sold an aggregate of 0.2 million common units under the BMO EDA, generating proceeds of approximately $4.1 million (net of less than $0.1 million of commissions). The Partnership used the net proceeds for general partnership purposes. As of June 30, 2015, approximately $337.6 million remains available to be issued under the agreement. (b) Class C Common Units In March 2015, the Partnership issued 6,704,285 Class C Common Units representing a new class of limited partner interests as partial consideration for the acquisition of Coronado. For further discussion see Note 3- Acquisitions. The Class C Common Units are substantially similar in all respects to the Partnership's common units, except that distributions paid on the Class C Common Units may be paid in cash or in additional Class C Common Units issued in kind, as determined by the General Partner in its sole discretion. The Class C Common Units will automatically convert into common units on a one-for-one basis on the earlier to occur of (i) the date on which the General Partner, in its sole discretion, determines to convert all of the outstanding Class C Common Units into common units and (ii) the first business day following the date of the distribution for the quarter ended March 31, 2016. Distributions on the Class C Common Units for the three months ended March 31, 2015 were paid-in-kind ("PIK") through the issuance of 99,794 Class C Common Units on May 14, 2015. A distribution on the Class C Common Units of $0.385 per unit was declared for the three months ended June 30, 2015, which will result in the issuance of 120,622 additional Class C Common Units on August 13, 2015. (c) Class D Common Units In February 2015, the Partnership issued 31,618,311 Class D Common Units to Acacia as consideration for a 25% interest in Midstream Holdings. For further discussion see Note 3 - Acquisitions. The Partnership’s Class D Common Units were substantially similar in all respects to the Partnership’s common units, except that they only received a pro rata distribution from the date of issuance for the fiscal quarter ended March 31, 2015. The Partnership’s Class D Common Units automatically converted into the Partnership’s common units on a one-for-one basis on May 4, 2015. (d) Class E Common Units In May 2015, the Partnership issued 36,629,888 Class E Common Units to Acacia as consideration for the remaining 25% interest in Midstream Holdings. For further discussion see Note 3 - Acquisitions. The Partnership’s Class E Common Units were substantially similar in all respects to the Partnership’s common units, except that they were only entitled to a pro rata distribution from the date of issuance for the fiscal quarter ended June 30, 2015. The Partnership’s Class E Common Units automatically converted into the Partnership’s common units on a one-for-one basis on August 3, 2015 and are included with common units outstanding as of June 30, 2015. (e) Distributions Unless restricted by the terms of the Partnership’s credit facility and/or the indentures governing the Partnership's senior unsecured notes, the Partnership must make distributions of 100% of available cash, as defined in the partnership agreement, within 45 days following the end of each quarter. Distributions are made to the General Partner in accordance with its current percentage interest with the remainder to the common unitholders, subject to the payment of incentive distributions as described below to the extent that certain target levels of cash distributions are achieved. The General Partner is not entitled to its general partner or incentive distributions with respect to the Class C Common Units issued in kind. Our General Partner owns the general partner interest in us and all of our incentive distribution rights. Our General Partner is entitled to receive incentive distributions if the amount we distribute with respect to any quarter exceeds levels specified in our partnership agreement. Under the quarterly incentive distribution provisions, generally our General Partner is entitled to 13.0% of amounts we distribute in excess of $0.25 per unit, 23% of the amounts we distribute in excess of $0.3125 per unit and 48.0% of amounts we distribute in excess of $0.375 per unit. A summary of the distribution activity relating to the common units for the six months ended June 30, 2015 is provided below: Declaration period Distribution/unit Date paid/payable Fourth Quarter of 2014 $ 0.375 February 12, 2015 First Quarter of 2015 (1) (2) $ 0.38 May 14, 2015 Second Quarter of 2015 (3) $ 0.385 August 13, 2015 (1) The Partnership declared a partial first quarter 2015 distribution on its Class D Common Units of $0.18 per unit paid on May 14, 2015. Distributions paid for the Class D Common Units represent a pro rata distribution for the number of days the Class D Common Units were issued and outstanding during the quarter. The Class D Common Units automatically converted into common units on a one-for-one basis on May 4, 2015. (2) The Partnership's first quarter distributions on its Class C Common Units of $0.38 per unit were PIK through the issuance of 99,794 Class C Common Units on May 14, 2015. (3) The Partnership declared a partial second quarter 2015 distribution on its Class E Common Units of $0.15 per unit to be paid on August 13, 2015. Distributions declared for the Class E Common Units represent a pro rata distribution for the number of days the Class E Common Units were issued and outstanding during the quarter. The Class E Common Units automatically converted into common units on a one-for-one basis on August 3, 2015. (f) Earnings per Unit and Dilution Computations As required under FASB ASC 260-10-45-61A, unvested share-based payments that entitle employees to receive non-forfeitable distributions are considered participating securities, as defined in FASB ASC 260-10-20, for earnings per unit calculations. Net income earned by the Predecessor prior to March 7, 2014 is not included for purposes of calculating earnings per unit as the Predecessor did not have any unitholders. The following table reflects the computation of basic and diluted earnings per limited partner unit for the period presented (in millions, except per unit amounts): Three Months Ended June 30, Six Months Ended 2015 2014 2015 2014* Limited partners’ interest in net income $ 35.7 $ 38.3 $ 44.7 $ 46.0 Distributed earnings allocated to: Common units (1) (2) (3) $ 117.6 $ 83.8 $ 214.4 $ 135.2 Unvested restricted units (1) 0.4 0.4 0.9 0.6 Total distributed earnings $ 118.0 $ 84.2 $ 215.3 $ 135.8 Undistributed loss allocated to: Common units (2) (3) $ (82.0 ) $ (45.7 ) $ (169.9 ) $ (89.5 ) Unvested restricted units (0.3 ) (0.2 ) (0.7 ) (0.3 ) Total undistributed loss $ (82.3 ) $ (45.9 ) $ (170.6 ) $ (89.8 ) Net income allocated to: 0 Common units (2) (3) $ 35.6 $ 38.1 $ 44.5 $ 45.7 Unvested restricted units 0.1 0.2 0.2 0.3 Total limited partners’ interest in net income $ 35.7 $ 38.3 $ 44.7 $ 46.0 Basic and diluted net income per unit: Basic $ 0.12 $ 0.17 $ 0.16 $ 0.20 Diluted $ 0.12 $ 0.17 $ 0.16 $ 0.20 * The six months ended June 30, 2014 amounts consist only of the period from March 7, 2014 through June 30, 2014. (1) Three months ended June 30, 2015 and 2014 represents a declared distribution of $0.385 per unit payable on August 13, 2015 and declared distribution of $0.365 per unit for common units paid on August 13, 2014, respectively. (2) Six months ended June 30, 2015 and 2014 represents distributions paid of $0.38 per unit on May 14, 2015 and a declared distribution of $0.385 per unit payable on August 13, 2015 and distributions paid of $0.36 per unit on May 14, 2014 and of $0.365 per unit on August 13, 2014. (3) Six months ended June 30, 2015 includes declared partial distribution of $0.15 per unit for Class E Common Units payable on August 13, 2015 and declared partial distribution of $0.18 per unit for Class D Common Units paid on May 14, 2015. The three and six months ended June 30, 2014 includes a declared partial distribution of $0.10 per unit for Class B Common Units paid on May 14, 2014. The following are the unit amounts used to compute the basic and diluted earnings per limited partner unit for the periods presented (in millions): Three Months Ended June 30, Six Months Ended June 30, Basic weighted average units outstanding: 2015 2014 2015 2014* Weighted average limited partner basic common units outstanding 284.3 229.8 273.1 229.7 Weighted average Class C Common Units outstanding 6.8 — 4.0 — Weighted average Class E Common Units outstanding 14.1 — 7.1 — Total weighted average limited partner common units outstanding 305.2 229.8 284.2 229.7 Diluted weighted average units outstanding: Weighted average limited partner basic common units outstanding 305.2 229.8 284.2 229.7 Dilutive effect of restricted units issued 0.4 0.3 0.4 0.3 Total weighted average limited partner diluted common units outstanding 305.6 230.1 284.6 230.0 * The six months ended June 30, 2014 amounts consist only of the period from March 7, 2014 through June 30, 2014. All outstanding units were included in the computation of diluted earnings per unit and weighted based on the number of days such units were outstanding during the periods presented. Net income is allocated to the General Partner in an amount equal to its incentive distributions as described in Note 7(e). The General Partner's share of net income consists of incentive distributions to the extent earned, a deduction for unit-based compensation attributable to ENLC’s restricted units and the percentage interest of the Partnership’s net income adjusted for ENLC's unit-based compensation specifically allocated to the General Partner. The net income allocated to the General Partner is as follows for the periods presented (in millions). Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014* Income allocation for incentive distributions $ 11.3 $ 5.9 $ 20.1 $ 7.3 Unit-based compensation attributable to ENLC’s restricted units (3.9 ) (3.1 ) (10.9 ) (3.7 ) General Partner interest in net income 0.2 0.3 0.3 0.4 General Partner interest in drop down transactions 11.5 40.4 36.1 49.9 General Partner share of net income $ 19.1 $ 43.5 $ 45.6 $ 53.9 * The six months ended June 30, 2014 amounts consist only of the period from March 7, 2014 through June 30, 2014.

Asset Retirement Obligation

Asset Retirement Obligation	6 Months Ended
	Jun. 30, 2015
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligation Disclosure	(8) Asset Retirement Obligations The schedule below summarizes the changes in the Partnership’s asset retirement obligation: June 30, 2015 June 30, 2014 (in millions) Beginning asset retirement obligation $ 20.6 $ 8.1 Revisions to existing liabilities (4.0 ) 3.4 Liabilities acquired — 0.5 Accretion 0.3 0.3 Liabilities settled (3.2 ) — Ending asset retirement obligation $ 13.7 $ 12.3 Asset retirement obligations of $1.1 million and $8.2 million as of June 30, 2015 and December 31, 2014, respectively are included in Other Current Liabilities.

Investment in Unconsolidated Af

Investment in Unconsolidated Affiliate	6 Months Ended
	Jun. 30, 2015
Equity Method Investments and Joint Ventures [Abstract]
Investment in unconsolidated affiliate	(9) Investment in Unconsolidated Affiliates The Partnership’s unconsolidated investments consisted of a contractual right to the economic benefits and burdens associated with Devon's 38.75% ownership interest in GCF at June 30, 2015 and 2014 and a 30.6% ownership interest in Howard Energy Partners ("HEP") at June 30, 2015 and 2014. The following table shows the activity related to the Partnership’s investment in unconsolidated affiliates for the periods indicated (in millions): Gulf Coast Fractionators Howard Energy Partners Total Three months ended June 30, 2015 Distributions $ 4.2 $ 8.2 $ 12.4 Equity in income $ 2.9 $ 3.0 $ 5.9 June 30, 2014 (1) Distributions $ — $ 3.0 $ 3.0 Equity in income $ 3.9 $ 0.6 $ 4.5 Six months ended June 30, 2015 Distributions $ 6.9 $ 12.3 $ 19.2 Equity in income $ 6.3 $ 3.4 $ 9.7 June 30, 2014 (1) Distributions $ — $ 5.7 $ 5.7 Equity in income $ 8.0 $ 0.7 $ 8.7 (1) Includes income and distributions for the period from March 7, 2014 through June 30, 2014 for HEP. The following table shows the balances related to the Partnership’s investment in unconsolidated affiliates for the periods indicated (in millions): June 30, 2015 December 31, 2014 Gulf Coast Fractionators $ 53.4 $ 54.1 Howard Energy Partners 207.8 216.7 Total investments in unconsolidated affiliates $ 261.2 $ 270.8

Employee Incentive Plans

Employee Incentive Plans	6 Months Ended
	Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Employee Incentive Plans	(10) Employee Incentive Plans (a) Long-Term Incentive Plans The Partnership accounts for unit-based compensation in accordance with FASB ASC 718, which requires that compensation related to all unit-based awards, including unit options, be recognized in the consolidated financial statements. The Partnership and ENLC each have similar unit-based compensation payment plans for officers and employees, which are described below. Unit-based compensation associated with ENLC's unit-based compensation plan awarded to officers and employees of the Partnership are recorded by the Partnership since ENLC has no substantial or managed operating activities other than its interests in the Partnership. Amounts recognized in the condensed consolidated financial statements with respect to these plans are as follows (in millions): Three Months Ended June 30, Six Months Ended 2015 2014 2015 2014 Cost of unit-based compensation allocated to Predecessor general and administrative expense (1) $ — $ — $ — $ 2.8 Cost of unit-based compensation charged to general and administrative expense 6.5 4.9 18.4 5.9 Cost of unit-based compensation charged to operating expense 1.1 0.8 3.0 1.0 Total amount charged to income $ 7.6 $ 5.7 $ 21.4 $ 9.7 (1) Unit-based compensation expense was treated as a contribution by the Predecessor in the Consolidated Statement of Changes in Partners' Equity in 2014. (b) EnLink Midstream Partners, LP Restricted Incentive Units The Partnership's restricted incentive units are valued at their fair value at the date of grant which is equal to the market value of common units on such date. A summary of the restricted incentive unit activity for the six months ended June 30, 2015 is provided below: Six Months Ended EnLink Midstream Partners, LP Restricted Incentive Units: Number of Units Weighted Average Grant-Date Fair Value Non-vested, beginning of period 1,022,191 $ 31.25 Granted 564,524 27.05 Vested* (261,409 ) 28.76 Forfeited (62,451 ) 31.09 Non-vested, end of period 1,262,855 $ 29.89 Aggregate intrinsic value, end of period (in millions) $ 27.7 * Vested units include 89,679 units withheld for payroll taxes paid on behalf of employees. The Partnership issued restricted incentive units in the first quarter of 2015 to officers and other employees. These restricted incentive units typically vest at the end of three years . In March 2015, the Partnership issued 128,675 restricted incentive units with a fair value of $3.4 million to officers and certain employees as bonus payments for 2014, which vested immediately and are included in the restricted units granted and vested line items above. A summary of the restricted incentive units’ aggregate intrinsic value (market value at vesting date) and fair value of units vested during the three and six months ended June 30, 2015 are provided below (in millions): Three Months Ended June 30, 2015 Six Months Ended June 30, 2015 EnLink Midstream Partners, LP Restricted Incentive Units: Aggregate intrinsic value of units vested $ 0.4 $ 7.2 Fair value of units vested $ 0.5 $ 7.5 As of June 30, 2015 , there was $24.3 million of unrecognized compensation cost related to non-vested restricted incentive units. That cost is expected to be recognized over a weighted-average period of 2.0 years . (c) EnLink Midstream Partners, LP Performance Units In March 2015, the Partnership and ENLC granted performance awards under the amended and restated EnLink Midstream GP, LLC Long-Term Incentive Plan (the "GP Plan") and the 2014 Long-Term Incentive Plan (the “LLC Plan”), respectively. The performance award agreements provide that the vesting of restricted incentive units granted thereunder is dependent on the achievement of certain total shareholder return (“TSR”) performance goals relative to the TSR achievement of a peer group of companies (the “Peer Companies”) over the applicable performance period. The performance award agreements contemplate that the Peer Companies for an individual performance award (the “Subject Award”) are the companies comprising the Alerian MLP Index for Master Limited Partnerships (“AMZ”), excluding the Partnership and ENLC (collectively, "EnLink"), on the grant date for the Subject Award. The performance units will vest based on the percentile ranking of the average of the Partnership’s and ENLC’s TSR achievement ("EnLink TSR") for the applicable performance period relative to the TSR achievement of the Peer Companies. At the end of the vesting period, recipients receive distribution equivalents with respect to the number of performance units vested. The vesting of units may be between zero and 200 percent of the units granted depending on EnLink’s TSR as compared to the peer group on the vesting date. The fair value of each performance unit is estimated as of the date of grant using a Monte Carlo simulation with the following assumptions used for all performance unit grants made under the plan: (i) a risk-free interest rate based on United States Treasury rates as of the grant date; (ii) a volatility assumption based on the historical realized price volatility of the Partnership and the designated peer group; (iii) an estimated ranking of the Partnership among the designated peer group and (iv) the distribution yield. The fair value of the unit on the date of grant is expensed over a vesting period of three years. The following table presents a summary of the grant-date fair values of performance units granted and the related assumptions. EnLink Midstream Partners, LP Performance Units: 2015 Beginning TSR Price $ 27.68 Risk-free interest rate 0.99 % Volatility factor 33.01 % Distribution yield 5.66 % The following table presents a summary of the Partnership's performance units. Six Months Ended EnLink Midstream Partners, LP Performance Units: Number of Weighted Non-Vested, beginning of period — $ — Granted 118,126 35.41 Vested — — Non-vested, end of period 118,126 $ 35.41 Aggregate intrinsic value, end of period (in millions) $ 2.6 As of June 30, 2015, there was $3.6 million of unrecognized compensation expense that related to non-vested Partnership performance units. That cost is expected to be recognized over a weighted-average period of 2.5 years . (d) EnLink Midstream, LLC’s Restricted Incentive Units ENLC’s restricted incentive units are valued at their fair value at the date of grant which is equal to the market value of the common units on such date. A summary of the restricted incentive units activity for the six months ended June 30, 2015 is provided below: Six Months Ended EnLink Midstream, LLC Restricted Incentive Units: Number of Weighted Average Grant-Date Fair Value Non-vested, beginning of period 986,472 $ 37.03 Granted 481,042 31.74 Vested* (258,094 ) 35.79 Forfeited (53,723 ) 36.15 Non-vested, end of period 1,155,697 $ 35.15 Aggregate intrinsic value, end of period (in millions) $ 35.9 * Vested units include 82,352 units withheld for payroll taxes paid on behalf of employees. ENLC issued restricted incentive units in the first quarter of 2015 to officers and other employees. These restricted incentive units typically vest at the end of three years and are included in restricted incentive units outstanding. In March 2015, ENLC issued 102,543 restricted incentive units with a fair value of $3.4 million to officers and certain employees as bonus payments for 2014, which vested immediately and are included in the restricted units granted and vested line items above. A summary of the restricted incentive units’ aggregate intrinsic value (market value at vesting date) and fair value of units vested during the three and six months ended June 30, 2015 are provided below (in millions): Three Months Ended June 30, Six Months Ended June 30, EnLink Midstream, LLC Restricted Incentive Units: 2015 2015 Aggregate intrinsic value of units vested $ 0.6 $ 8.9 Fair value of units vested $ 0.6 $ 9.2 As of June 30, 2015 , there was $24.1 million of unrecognized compensation costs related to non-vested ENLC restricted incentive units. The cost is expected to be recognized over a weighted-average period of 1.9 years . (e) EnLink Midstream, LLC's Performance Units In March 2015, ENLC granted performance awards under the LLC Plan discussed in Note (c) above. At the end of the vesting period, recipients receive distribution equivalents with respect to the number of performance units vested. The vesting of units may be between zero and 200 percent of the units granted depending on EnLink’s TSR as compared to the peer group on the vesting date. The fair value of each performance unit is estimated as of the date of grant using a Monte Carlo simulation with the following assumptions used for all performance unit grants made under the plan: (i) a risk-free interest rate based on United States Treasury rates as of the grant date; (ii) a volatility assumption based on the historical realized price volatility of ENLC and the designated peer group; (iii) an estimated ranking of ENLC among the designated peer group and (iv) the distribution yield. The fair value of the unit on the date of grant is expensed over a vesting period of three years. The following table presents a summary of the grant-date fair values of performance units granted and the related assumptions. EnLink Midstream, LLC Performance Units: 2015 Beginning TSR Price $ 34.24 Risk-free interest rate 0.99 % Volatility factor 33.02 % Distribution yield 2.98 % The following table presents a summary of the ENLC's performance units. Six Months Ended EnLink Midstream, LLC Performance Units: Number of Weighted Non-Vested, beginning of period — $ — Granted 105,080 40.5 Vested — — Non-vested, end of period 105,080 $ 40.5 Aggregate intrinsic value, end of period (in millions) $ 3.3 As of June 30, 2015, there was $3.7 million of unrecognized compensation expense that related to non-vested ENLC performance units. That cost is expected to be recognized over a weighted-average period of 2.5 years .

Derivatives

Derivatives	6 Months Ended
	Jun. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	(11) Derivatives Interest Rate Swaps The Partnership entered into interest rate swaps in April and May 2015 in connection with the issuance of the 2025 Notes in May 2015. The impact of the interest rate swaps on net income is included in other income (expense) in the Condensed Consolidated Statements of Operations as part of interest expense, net, as follows (in millions): Three Months Ended June 30, Six Months Ended June 30, 2015 2015 Settlement gains on derivatives $ 3.6 $ 3.6 Commodity Swaps The Partnership manages its exposure to fluctuation in commodity prices by hedging the impact of market fluctuations. Swaps are used to manage and hedge price and location risk related to these market exposures. Swaps are also used to manage margins on offsetting fixed-price purchase or sale commitments for physical quantities of natural gas and NGLs. The Partnership does not designate transactions as cash flow or fair value hedges for hedge accounting treatment under FASB ASC 815. Therefore, changes in the fair value of the Partnership's derivatives are recorded in revenue in the period incurred. In addition, the Partnership's risk management policy does not allow the Partnership to take speculative positions with its derivative contracts. The Partnership commonly enters into index (float-for-float) or fixed-for-float swaps in order to mitigate its cash flow exposure to fluctuations in the future prices of natural gas, NGLs and crude oil. For natural gas, index swaps are used to protect against the price exposure of daily priced gas versus first-of-month priced gas. They are also used to hedge the basis location price risk resulting from supply and markets being priced on different indices. For natural gas, NGLs, condensate and crude, fixed-for-float swaps are used to protect cash flows against price fluctuations: (1) where the Partnership receives a percentage of liquids as a fee for processing third-party gas or where the Partnership receives a portion of the proceeds of the sales of natural gas and liquids as a fee, (2) in the natural gas processing and fractionation components of its business and (3) where the Partnership is mitigating the price risk for product held in inventory or storage. The components of gain (loss) on derivative activity in the Condensed Consolidated Statements of Operations relating to commodity swaps are as follows for the three and six months ended June 30, 2015 and 2014 (in millions): Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014* Change in fair value of derivatives $ (2.5 ) $ (1.3 ) $ (6.3 ) $ (2.0 ) Realized gain (loss) on derivatives 3.7 (0.3 ) 7.7 (0.9 ) Gain (loss) on derivative activity $ 1.2 $ (1.6 ) $ 1.4 $ (2.9 ) * The six months ended June 30, 2014 amounts consist only of the period from March 7, 2014 through June 30, 2014. The fair value of derivative assets and liabilities relating to commodity swaps are as follows (in millions): June 30, 2015 December 31, 2014 Fair value of derivative assets — current $ 14.0 $ 16.7 Fair value of derivative assets — long term 4.9 10.0 Fair value of derivative liabilities — current (3.5 ) (3.0 ) Fair value of derivative liabilities — long term (0.8 ) (2.0 ) Net fair value of derivatives $ 14.6 $ 21.7 Set forth below is the summarized notional volumes and fair value of all instruments held for price risk management purposes and related physical offsets at June 30, 2015 . The remaining term of the contracts extend no later than December 2016. June 30, 2015 Commodity Instruments Unit Volume Fair Value (In millions) NGL (short contracts) Swaps Gallons (60.5 ) $ 18.1 NGL (long contracts) Swaps Gallons 35.8 (2.6 ) Natural Gas (short contracts) Swaps MMBtu (3.7 ) 2.6 Natural Gas (long contracts) Swaps MMBtu 2.7 (3.5 ) Total fair value of derivatives $ 14.6 On all transactions where the Partnership is exposed to counterparty risk, the Partnership analyzes the counterparty's financial condition prior to entering into an agreement, establishes limits and monitors the appropriateness of these limits on an ongoing basis. The Partnership primarily deals with two types of counterparties, financial institutions and other energy companies, when entering into financial derivatives on commodities. The Partnership has entered into Master International Swaps and Derivatives Association Agreements ("ISDAs") that allow for netting of swap contract receivables and payables in the event of default by either party. If the Partnership's counterparties failed to perform under existing swap contracts, the Partnership's maximum loss as of June 30, 2015 of $18.9 million would be reduced to $14.6 million due to the offsetting of gross fair value payables against gross fair value receivables as allowed by the ISDAs. Fair Value of Derivative Instruments Assets and liabilities related to the Partnership's derivative contracts are included in the fair value of derivative assets and liabilities and the profit and loss on the mark to market value of these contracts are recorded net as a loss on derivatives in the Condensed Consolidated Statement of Operations. The Partnership estimates the fair value of all of its derivative contracts using actively quoted prices. The estimated fair value of derivative contracts by maturity date was as follows (in millions): Maturity Periods Less than one year One to two years More than two years Total fair value June 30, 2015 $ 10.5 $ 4.1 $ — $ 14.6

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	(12) Fair Value Measurements FASB ASC 820 sets forth a framework for measuring fair value and required disclosures about fair value measurements of assets and liabilities. Fair value under FASB ASC 820 is defined as the price at which an asset could be exchanged in a current transaction between knowledgeable, willing parties. A liability’s fair value is defined as the amount that would be paid to transfer the liability to a new obligor, not the amount that would be paid to settle the liability with the creditor. Where available, fair value is based on observable market prices or parameters or derived from such prices or parameters. Where observable prices or inputs are not available, use of unobservable prices or inputs are used to estimate the current fair value, often using an internal valuation model. These valuation techniques involve some level of management estimation and judgment, the degree of which is dependent on the item being valued. FASB ASC 820 establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include: Level 1, defined as observable inputs such as quoted prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions. The Partnership’s derivative contracts primarily consist of commodity swap contracts which are not traded on a public exchange. The fair values of commodity swap contracts are determined using discounted cash flow techniques. The techniques incorporate Level 1 and Level 2 inputs for future commodity prices that are readily available in public markets or can be derived from information available in publicly quoted markets. These market inputs are utilized in the discounted cash flow calculation considering the instrument’s term, notional amount, discount rate and credit risk and are classified as Level 2 in hierarchy. Net liabilities measured at fair value on a recurring basis are summarized below (in millions): June 30, 2015 December 31, 2014 Level 2 Commodity Swaps* $ 14.6 $ 21.7 Total $ 14.6 $ 21.7 * The fair value of derivative contracts included in assets or liabilities for risk management activities represents the amount at which the instruments could be exchanged in a current arms-length transaction adjusted for credit risk of the Partnership and/or the counterparty as required under FASB ASC 820. Fair Value of Financial Instruments The estimated fair value of the Partnership’s financial instruments has been determined by the Partnership using available market information and valuation methodologies. Considerable judgment is required to develop the estimates of fair value; thus, the estimates provided below are not necessarily indicative of the amount the Partnership could realize upon the sale or refinancing of such financial instruments (in millions): June 30, 2015 December 31, 2014 Carrying Value Fair Value Carrying Fair Long-term debt $ 2,827.2 $ 2,757.1 $ 2,022.5 $ 2,026.1 Obligations under capital leases $ 18.7 $ 18.0 $ 20.3 $ 19.8 The carrying amounts of the Partnership’s cash and cash equivalents, accounts receivable and accounts payable approximate fair value due to the short-term maturities of these assets and liabilities. The Partnership had $150.0 million and $237.0 million in outstanding borrowings under its revolving credit facility as of June 30, 2015 and December 31, 2014 , respectively. As borrowings under the credit facility accrue interest under floating interest rate structures, the carrying value of such indebtedness approximates fair value for the amounts outstanding under the credit facility. As of June 30, 2015 , the Partnership had total borrowings of $ 2.7 billion under senior unsecured notes maturing between 2019 and 2045 with fixed interest rates ranging from 2.7% to 7.1% . As of December 31, 2014, the Partnership had total borrowings of $1.8 billion maturing between 2019 and 2045 with fixed interest rates ranging from 2.7% to 7.1% . The fair value of all senior unsecured notes as of June 30, 2015 and December 31, 2014 was based on Level 2 inputs from third-party market quotations. The fair value of obligations under capital leases was calculated using Level 2 inputs from third-party banks.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure	(13) Commitments and Contingencies (a) Severance and Change in Control Agreements Certain members of management of the Partnership are parties to severance and change of control agreements with the General Partner. The severance and change in control agreements provide those individuals with severance payments in certain circumstances and prohibit such an individual from, among other things, competing with the General Partner or its affiliates during his employment, and disclosing confidential information about, or interfering with a client or customer of, the General Partner or its affiliates during his employment and for a certain period of time following the termination of such person’s employment. (b) Environmental Issues The operation of pipelines, plants and other facilities for the gathering, processing, transmitting or disposing of natural gas, NGLs, crude oil, condensate, brine and other products is subject to stringent and complex laws and regulations pertaining to health, safety and the environment. As an owner or operator of these facilities, the Partnership must comply with United States laws and regulations at the federal, state and local levels that relate to air and water quality, hazardous and solid waste management and disposal, and other environmental matters. The cost of planning, designing, constructing and operating pipelines, plants, and other facilities must incorporate compliance with environmental laws and regulations and safety standards. Failure to comply with these laws and regulations may trigger a variety of administrative, civil and potentially criminal enforcement measures, including citizen suits, which can include the assessment of monetary penalties, the imposition of remedial requirements, and the issuance of injunctions or restrictions on operation. Management believes that, based on currently known information, compliance with these laws and regulations will not have a material adverse effect on the Partnership's results of operations, financial condition or cash flows. (c) Litigation Contingencies The Partnership is involved in various litigation and administrative proceedings arising in the normal course of business. In the opinion of management, any liabilities that may result from these claims would not individually or in the aggregate have a material adverse effect on its financial position, results of operations or cash flows. At times, the Partnership’s subsidiaries acquire pipeline easements and other property rights by exercising rights of eminent domain and common carrier. As a result, the Partnership (or its subsidiaries) is a party to a number of lawsuits under which a court will determine the value of pipeline easements or other property interests obtained by the Partnership’s subsidiaries by condemnation. Damage awards in these suits should reflect the value of the property interest acquired and the diminution in the value of the remaining property owned by the landowner. However, some landowners have alleged unique damage theories to inflate their damage claims or assert valuation methodologies that could result in damage awards in excess of the amounts anticipated. Although it is not possible to predict the ultimate outcomes of these matters, the Partnership does not expect that awards in these matters will have a material adverse impact on its consolidated results of operations, financial condition or cash flows. The Partnership (or its subsidiaries) is defending lawsuits filed by owners of property located near processing facilities or compression facilities constructed by the Partnership as part of its systems. The suits generally allege that the facilities create a private nuisance and have damaged the value of surrounding property. Claims of this nature have arisen as a result of the industrial development of natural gas gathering, processing and treating facilities in urban and occupied rural areas. In July 2013, the Board of Commissioners for the Southeast Louisiana Flood Protection Authority for New Orleans and surrounding areas filed a lawsuit against approximately 100 energy companies, seeking, among other relief, restoration of wetlands allegedly lost due to historic industry operations in those areas. The suit was filed in Louisiana state court in New Orleans, but was removed to the United States District Court for the Eastern District of Louisiana. The amount of damages is unspecified. The Partnership's subsidiary, EnLink LIG, LLC, is one of the named defendants as the owner of pipelines in the area. On February 13, 2015, the court granted defendants’ joint motion to dismiss and dismissed the plaintiff’s claims with prejudice. Plaintiffs have appealed the matter to the United States Court of Appeals for the Fifth Circuit. The Partnership intends to continue vigorously defending the case. The success of the plaintiffs' appeal as well as the Partnership's costs and legal exposure, if any, related to the lawsuit are not currently determinable. We own and operate a high-pressure pipeline and underground natural gas and NGL storage reservoirs and associated facilities near Bayou Corne, Louisiana. In August 2012, a large sinkhole formed in the vicinity of this pipeline and underground storage reservoirs. We are seeking to recover our losses from responsible parties. We have sued Texas Brine Company, LLC ("Texas Brine"), the operator of a failed cavern in the area and its insurers, seeking recovery for these losses. We have also sued Occidental Chemical Company and Legacy Vulcan Corp. f/k/a Vulcan Materials Company, two Chlor-Alkali plant operators that participated in Texas Brine’s operational decisions regarding the mining of the failed cavern. We also filed a claim with our insurers, which our insurers denied. We disputed the denial and sued our insurers, but we have agreed to stay the matter pending resolution of our claims against Texas Brine and its insurers. In August 2014, we received a partial settlement with respect to the Texas Brine claims in the amount of $6.1 million , but additional claims remain outstanding. We cannot give assurance that we will be able to fully recover our losses through insurance recovery or claims against responsible parties. In June 2014, a group of landowners in Assumption Parish, Louisiana added a subsidiary of the Partnership, EnLink Processing Services, LLC, as a defendant in a pending lawsuit they had filed against Texas Brine, Occidental Chemical Corporation, and Vulcan Materials Company relating to claims arising from the Bayou Corne sinkhole. The suit is pending in the 23 rd Judicial Court, Assumption Parish, Louisiana. Although plaintiffs’ claims against the other defendants have been pending since October 2012, plaintiffs are now alleging that EnLink Processing Services, LLC’s negligence also contributed to the formation of the sinkhole. The amount of damages is unspecified. The validity of the causes of action, as well as the Partnership's costs and legal exposure, if any, related to the lawsuit are not currently determinable. The Partnership intends to vigorously defend the case. The Partnership has also filed a claim for defense and indemnity with its insurers. In October 2014, Williams Olefins, L.L.C. filed a lawsuit against a subsidiary of the Partnership, EnLink NGL Marketing, LP, in the District Court of Tulsa County, Oklahoma. The plaintiff alleges breach of contract and negligent misrepresentation relating to an ethane output contract between the parties and the subsidiary’s termination of ethane production from one of its fractionation plants. The amount of damages is unspecified. The validity of the causes of action, as well as the Partnership’s costs and legal exposure, if any, related to the lawsuit are not currently determinable. The Partnership intends to vigorously defend the case.

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Segment Information	(14) Segment Information Identification of the majority of the Partnership's operating segments is based principally upon geographic regions served. The Partnership’s reportable segments consist of the following: natural gas gathering, processing, transmission and fractionation operations located in north Texas, south Texas and the Permian Basin in west Texas ("Texas"), the pipelines and processing plants located in Louisiana and NGL assets located in south Louisiana ("Louisiana"), natural gas gathering and processing operations located throughout Oklahoma ("Oklahoma") and crude rail, truck, pipeline, and barge facilities in west Texas, south Texas, Louisiana and Ohio River Valley ("Crude and Condensate"). The Partnership's Crude and Condensate segment, which is identified based upon the nature of services provided to customers of the segment, has historically been referred to as the Partnership's ORV segment. Due to the growth in this segment, including the acquisitions of LPC and VEX, the Partnership has renamed this segment to more accurately reflect the assets included therein. The Partnership has restated the prior period to include certain crude and condensate activity in the Crude and Condensate segment. Operating activity for intersegment eliminations is shown in the corporate segment. The Partnership’s sales are derived from external domestic customers. Corporate expenses include general partnership expenses associated with managing all reportable operating segments. Corporate assets consist primarily of cash, property and equipment, including software, for general corporate support, debt financing costs and investments in HEP and GCF. The Partnership evaluates the performance of its operating segments based on operating revenues and segment profits. Summarized financial information concerning the Partnership’s reportable segments is shown in the following tables: Texas Louisiana Oklahoma Crude and Condensate Corporate Totals (In millions) Three Months Ended June 30, 2015 Product sales $ 81.2 $ 401.2 $ 0.1 $ 473.7 $ — $ 956.2 Product sales-affiliates 35.0 17.0 1.7 14.0 (36.0 ) 31.7 Midstream services 36.0 63.2 9.8 26.9 — 135.9 Midstream services-affiliates 115.8 0.3 29.1 4.3 — 149.5 Cost of sales (118.4 ) (418.2 ) (2.0 ) (465.6 ) 36.0 (968.2 ) Operating expenses (45.5 ) (27.2 ) (9.1 ) (27.3 ) — (109.1 ) Gain on derivative activity — — — — 1.2 1.2 Segment profit $ 104.1 $ 36.3 $ 29.6 $ 26.0 $ 1.2 $ 197.2 Depreciation and amortization $ (42.8 ) $ (26.9 ) $ (11.8 ) $ (14.5 ) $ (1.7 ) $ (97.7 ) Goodwill $ 1,185.0 $ 786.8 $ 190.3 $ 142.1 $ — $ 2,304.2 Capital expenditures $ 80.9 $ 14.7 $ 12.3 $ 54.4 $ 2.5 $ 164.8 Three Months Ended June 30, 2014 Product sales $ 68.6 $ 514.2 $ — $ 105.1 $ — $ 687.9 Product sales-affiliates 19.3 1.7 — — (21.0 ) — Midstream services 14.6 37.9 — 14.6 — 67.1 Midstream services-affiliates 126.6 — 47.2 — — 173.8 Cost of sales (76.1 ) (508.1 ) — (98.7 ) 21.0 (661.9 ) Operating expenses (38.6 ) (16.5 ) (7.3 ) (11.5 ) — (73.9 ) Loss on derivative activity — — — — (1.6 ) (1.6 ) Segment profit $ 114.4 $ 29.2 $ 39.9 $ 9.5 $ (1.6 ) $ 191.4 Depreciation and amortization $ (32.8 ) $ (19.1 ) $ (11.6 ) $ (10.5 ) $ (0.5 ) $ (74.5 ) Goodwill $ 1,168.1 $ 786.7 $ 190.3 $ 112.5 $ — $ 2,257.6 Capital expenditures $ 75.4 $ 121.2 $ (2.2 ) $ 33.9 $ 3.2 $ 231.5 Six Months Ended June 30, 2015 Product sales $ 131.0 $ 773.4 $ 0.1 $ 722.4 $ — $ 1,626.9 Product sales-affiliates 60.9 24.1 5.4 14.0 (56.5 ) 47.9 Midstream services 55.6 121.1 20.5 41.1 — 238.3 Midstream services-affiliates 231.3 0.4 60.3 8.5 — 300.5 Cost of sales (185.6 ) (789.1 ) (7.1 ) (700.3 ) 56.5 (1,625.6 ) Operating expenses (92.6 ) (51.5 ) (16.1 ) (47.4 ) — (207.6 ) Gain on derivative activity — — — — 1.4 1.4 Segment profit $ 200.6 $ 78.4 $ 63.1 $ 38.3 $ 1.4 $ 381.8 Depreciation and amortization $ (79.2 ) $ (54.4 ) $ (25.3 ) $ (26.9 ) $ (3.2 ) $ (189.0 ) Goodwill $ 1,185.0 $ 786.8 $ 190.3 $ 142.1 $ — $ 2,304.2 Capital expenditures $ 154.4 $ 29.9 $ 17.5 $ 132.0 $ 6.7 $ 340.5 Six Months Ended June 30, 2014 Product sales $ 114.5 $ 649.1 $ 11.5 $ 126.2 $ — $ 901.3 Product sales-affiliates 311.9 2.3 147.9 — (25.7 ) 436.4 Midstream services 19.5 48.4 — 18.3 — 86.2 Midstream services-affiliates 167.0 — 62.3 — — 229.3 Cost of sales (333.4 ) (641.6 ) (133.9 ) (117.6 ) 25.7 (1,200.8 ) Operating expenses (70.3 ) (21.6 ) (14.0 ) (14.7 ) — (120.6 ) Loss on derivative activity — — — — (2.9 ) (2.9 ) Segment profit $ 209.2 $ 36.6 $ 73.8 $ 12.2 $ (2.9 ) $ 328.9 Depreciation and amortization $ (60.1 ) $ (24.3 ) $ (25.8 ) $ (12.2 ) $ (0.6 ) $ (123.0 ) Goodwill $ 1,168.1 $ 786.7 $ 190.3 $ 112.5 $ — $ 2,257.6 Capital expenditures $ 100.5 $ 143.3 $ 8.0 $ 45.0 $ 8.7 $ 305.5 The table below presents information about segment assets as of June 30, 2015 and December 31, 2014 : June 30, 2015 December 31, 2014 Segment Identifiable Assets: (In millions) Texas $ 4,011.7 $ 3,302.9 Louisiana 3,195.5 3,316.5 Oklahoma 885.5 892.8 Crude and Condensate 1,210.6 871.8 Corporate 316.0 318.0 Total identifiable assets $ 9,619.3 $ 8,702.0 The following table reconciles the segment profits reported above to the operating income as reported in the condensed consolidated statements of operations (in millions): Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 Segment profits $ 197.2 $ 191.4 $ 381.8 $ 328.9 General and administrative expenses (27.0 ) (25.8 ) (68.8 ) (41.3 ) Depreciation and amortization (97.7 ) (74.5 ) (189.0 ) (123.0 ) Operating income $ 72.5 $ 91.1 $ 124.0 $ 164.6

Discontinued Operations

Discontinued Operations	6 Months Ended
	Jun. 30, 2015
Discontinued Operations and Disposal Groups [Abstract]
Disposal Groups, Including Discontinued Operations, Disclosure	(15) Discontinued Operations The Predecessor’s historical assets comprised all of Devon’s U.S. midstream assets and operations. However, only its assets serving the Barnett, Cana-Woodford and Arkoma-Woodford Shales, as well as contractual rights to the economic benefits and burdens associated with Devon's 38.75% interest in GCF, were contributed to Midstream Holdings in connection with the business combination on March 7, 2014. All operations activity related to the non-contributed assets prior to March 7, 2014 are classified as discontinued operations. The following schedule summarizes net income from discontinued operations (in millions): Six Months Ended June 30, 2014 Revenues: Revenues $ 6.8 Revenues - affiliates 10.5 Total revenues 17.3 Operating costs and expenses: Operating expenses 15.7 Total operating costs and expenses 15.7 Income before income taxes 1.6 Income tax provision 0.6 Net income $ 1.0

Supplemental Cash Flow Informat

Supplemental Cash Flow Information (Notes)	6 Months Ended
	Jun. 30, 2015
Supplemental Cash Flow Elements [Abstract]
Cash Flow, Supplemental Disclosures	(16) Supplemental Cash Flow Information The following schedule summarizes non-cash financing activities for the period presented. Six Months Ended June 30, 2015 (In millions) Non-cash financing activities: Non-cash issuance of common units (1) $ 180.0 Non-cash issuance of Class C Common Units (1) $ 180.0 Non-cash adjustment of interest in Midstream Holdings (2) $ 66.5 (1) Non-cash common units and Class C Common Units were issued as partial consideration for the Coronado acquisition. See Note 3 - Acquisitions for further discussion. (2) Non-cash adjustment to reflect recast of Midstream Holdings' interests acquired on February 17, 2015 and May 27, 2015. See Note 3 - Acquisitions for further discussion. Also, see Note 5-Affiliate Transactions for non-cash activities related to Predecessor operations with Devon prior to March 7, 2014.

Significant Accounting Policy (

Significant Accounting Policy (Policies)	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	(a) Basis of Presentation The accompanying condensed consolidated financial statements are prepared in accordance with the instructions to Form 10-Q, are unaudited and do not include all the information and disclosures required by generally accepted accounting principles in the United States of America ("GAAP") for complete financial statements. All adjustments that, in the opinion of management, are necessary for a fair presentation of the results of operations for the interim periods have been made and are of a recurring nature unless otherwise disclosed herein. The results of operations for such interim periods are not necessarily indicative of results of operations for a full year. All significant intercompany balances and transactions have been eliminated in consolidation. Further, the unaudited condensed consolidated financial statements give effect to the business combination and related transactions discussed in Note 1(a) above under the acquisition method of accounting and are treated as a reverse acquisition. Under the acquisition method of accounting, Midstream Holdings was the accounting acquirer in the transactions because its parent company, Devon, obtained control of the Partnership through the indirect control of the General Partner as a result of the business combination. All financial results prior to March 7, 2014 reflect the historical operations of Midstream Holdings and are reflected as Predecessor income in the statement of operations. Additionally, the Partnership’s assets acquired and liabilities assumed by Midstream Holdings in the business combination were recorded at their fair values measured as of the acquisition date, March 7, 2014. The excess of the purchase price over the estimated fair values of the Partnership’s net assets acquired was recorded as goodwill. Financial results subsequent to March 7, 2014 reflect the combined operations of Midstream Holdings and the Partnership, which give effect to new contracts entered into with Devon and include the legacy Partnership assets. Certain assets were not contributed to Midstream Holdings from the Predecessor and the operations of such non contributed assets have been presented as discontinued operations. In conjunction with the business combination, Midstream Holdings became a non-taxable entity which was treated as a reorganization under common control with the removal of historical deferred taxes reflected through equity.
Revenue Recognition, Policy [Policy Text Block]	(b) Revenue Recognition The Partnership generates the majority of its revenues from midstream energy services, including gathering, processing, transmission, fractionation, condensate stabilization, and brine services through various contractual arrangements which include fee based contract arrangements or arrangements where it purchases and resells commodities in connection with providing the related service and earns a net margin for its fee. While the Partnership's transactions vary in form, the essential element of each transaction is the use of its assets to transport a product or provide a processed product to an end-user at the tailgate of the plant, barge terminal, or pipeline. The Partnership reflects revenue as Product sales and Midstream services revenue on the Condensed Consolidated Statements of Operations as follows: • Product sales - Product sales represent the sale of natural gas, NGLs, crude oil and condensate where the product is purchased and resold in connection with providing the Partnership's midstream services as outlined above. • Midstream services - Midstream services represents all other revenue generated as a result of performing the Partnership's midstream services outlined above. The Partnership recognizes revenue for sales or services at the time the natural gas, NGLs, crude oil or condensate are delivered or at the time the service is performed at a fixed or determinable price. The Partnership generally accrues one month of sales and the related natural gas, NGL, condensate and crude oil purchases and reverses these accruals when the sales and purchases are actually invoiced and recorded in the subsequent month. Actual results could differ from the accrual estimates. Except for fee based arrangements, the Partnership acts as the principal in these purchase and sale transactions, bearing the risk and reward of ownership as evidenced by title transfer, scheduling the transportation of products and assuming credit risk. The Partnership accounts for taxes collected from customers attributable to revenue transactions and remitted to government authorities on a net basis (excluded from revenues).
Redeemable Noncontrolling Interest [Policy Text Block]	(c) Redeemable Non-Controlling Interest Non-controlling interests that contain an option for the non-controlling interest holder to require the Partnership to buy out such interests for cash are considered to be redeemable non-controlling interests because the redemption feature is not deemed to be a freestanding financial instrument and because the redemption is not solely within the control of the Partnership. Redeemable non-controlling interest is not considered to be a component of partners' equity and is reported as temporary equity in the mezzanine section on the Condensed Consolidated Balance Sheets. The amount recorded as redeemable non-controlling interest at each balance sheet date is the greater of the redemption value and the carrying value of the redeemable non-controlling interest (the initial carrying value increased or decreased for the non-controlling interest holders' share of net income or loss and distributions).
New Accounting Pronouncements, Policy [Policy Text Block]	(d) Recent Accounting Pronouncements In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”). ASU 2014-09 will replace existing revenue recognition requirements in GAAP and will require entities to recognize revenue at an amount that reflects the consideration to which the Partnership expects to be entitled in exchange for transferring goods or services to a customer. The new standard will also require significantly expanded disclosures regarding the qualitative and quantitative information of the Partnership's nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period, and is to be applied retrospectively, with early application permitted for annual reporting periods beginning after December 15, 2016. We are currently evaluating the impact the pronouncement will have on our condensed consolidated financial statements and related disclosures. Subject to this evaluation, we have reviewed all recently issued accounting pronouncements that became effective during the six months ended June 30, 2015, and have determined that none would have a material impact on our Condensed Consolidated Financial Statements. In April 2015, the FASB issued ASU 2015-03, Interest – Imputation of Interest: Simplifying the Presentation of Debt Issuance Costs (Topic 835). The update requires debt issuance costs related to a recognized debt liability be presented on the balance sheet as a direct deduction from the carrying amount of that debt liability. The standard requires retrospective application and is effective for us beginning on January 1, 2016. In April 2015, the FASB issued ASU No. 2015-06, Effects on Historical Earnings per Unit of Master Limited Partnership Dropdown Transactions (a Consensus of the FASB Emerging Issues Task Force), which requires a master limited partnership (MLP) to allocate earnings (losses) of a transferred business entirely to the general partner when computing earnings per unit (EPU) for periods before the dropdown transaction occurred. The EPU that the limited partners previously reported would not change as a result of the dropdown transaction. The ASU also requires an MLP to disclose the effects of the dropdown transaction on EPU for the periods before and after the dropdown transaction occurred. ASU 2015-06 is effective for the fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. The ASU requires retrospective application and early adoption is permitted. In February 2015, the FASB issued ASU 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis . The update provides additional guidance to reporting entities in evaluating whether certain legal entities, such as limited partnerships, limited liability corporations and securitization structures, should be consolidated. The update is considered to be an improvement on current accounting requirements as it reduces the number of existing consolidation models. The update is effective for us beginning on January 1, 2016, and we are currently evaluating the impact this standard will have on our consolidated financial statements and related disclosures.

Acquisition (Table)

Acquisition (Table)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Business Acquisition [Line Items]
ScheduleOfPriorPeriodAdjustmentsRelatedToAssetDropDown [Table Text Block]	The following tables present the collective impact of the E2 Drop Down, the VEX Drop Down and the EMH Drop Downs as presented in the Partnership's historical Condensed Consolidated Statements of Operations for the three and six months ended June 30, 2014 and the six months ended June 30, 2015: Six Months Ended June 30, 2015 Partnership Historical EMH VEX Combined (in millions) Revenues $ 2,210.8 $ — $ 4.2 $ 2,215.0 Net income (loss) $ 90.4 $ — $ 0.7 $ 91.1 Net income attributable to non-controlling interest $ 15.3 $ (15.3 ) $ — $ — Net income attributable to EnLink Midstream Partners, $ 75.1 $ 15.3 $ 0.7 $ 91.1 General partner interest in net income $ 29.6 $ 15.3 $ 0.7 $ 45.6	Six Months Ended June 30, 2014 Partnership Historical EMH** E2 VEX** Combined (in millions) Revenues $ 1,646.5 $ — $ 3.8 $ — $ 1,650.3 Net income (loss) $ 138.6 $ — $ (0.1 ) $ (3.0 ) $ 135.5 Net income attributable to non-controlling interest $ 53.1 $ (53.1 ) $ 0.1 $ — $ 0.1 Net income attributable to EnLink Midstream Partners, $ 85.5 $ 53.1 $ (0.2 ) $ (3.0 ) $ 135.4 General partner interest in net income $ 4.0 $ 53.1 $ (0.2 ) $ (3.0 ) $ 53.9 * * Represents the VEX Interests and Transferred Interests amounts for the period from March 7, 2014 through June 30, 2014. Three Months Ended June 30, 2014 Partnership Historical EMH E2 VEX Combined (in millions) Revenues $ 924.0 $ — $ 3.2 $ — $ 927.2 Net income (loss) $ 84.1 $ — $ (0.1 ) $ (2.1 ) $ 81.9 Net income attributable to non-controlling interest $ 42.7 $ (42.7 ) $ 0.1 $ — $ 0.1 Net income attributable to EnLink Midstream Partners, $ 41.4 $ 42.7 $ (0.2 ) $ (2.1 ) $ 81.8 General partner interest in net income $ 3.1 $ 42.7 $ (0.2 ) $ (2.1 ) $ 43.5
BusinessAcquisitionProFormaInformation	The following unaudited pro forma condensed financial information for the three and six months ended June 30, 2015 and 2014 gives effect to the business combination, Chevron acquisition, Coronado acquisition, LPC acquisition, EMH Drop Downs, VEX Drop Down and E2 Drop Down as if they had occurred on January 1, 2014. The unaudited pro forma condensed financial information has been included for comparative purposes only and is not necessarily indicative of the results that might have occurred had the transactions taken place on the dates indicated and is not intended to be a projection of future results. Pro forma financial information associated with the business combination and acquisitions is reflected below. Three Months Ended June 30, Six Months Ended June 30, 2014 2015 2014 (in millions) Pro forma total revenues (1) $ 1,453.4 $ 2,337.1 $ 2,833.2 Pro forma net income $ 71.8 $ 85.9 $ 105.6 Pro forma net income attributable to EnLink Midstream Partners, LP $ 71.7 $ 85.9 $ 105.5 Pro forma net income per common unit: Basic $ 0.11 $ 0.14 $ 0.11 Diluted $ 0.11 $ 0.14 $ 0.11
Chevron Acquisition [Member]
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The following table presents the fair value of the identified assets received and liabilities assumed at the acquisition date. Purchase Price Allocation (in millions): Assets acquired: Property, plant and equipment $ 225.3 Intangibles 13.0 Liabilities assumed: Current liabilities (6.8 ) Total identifiable net assets $ 231.5
LPC [Member]
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The following table presents the fair value of the identified assets received and liabilities assumed at the acquisition date. Purchase Price Allocation (in millions): Assets acquired: Current assets (including $21.1 million in cash) $ 107.4 Property, plant and equipment 29.8 Intangibles 43.2 Goodwill 29.6 Liabilities assumed: Current liabilities (106.0 ) Deferred tax liability (4.0 ) Total identifiable net assets $ 100.0
Coronado [Member]
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The following table presents the fair value of the identified assets received and liabilities assumed at the acquisition date. The purchase price allocation has been prepared on a preliminary basis pending receipt of a final valuation report and is subject to change. Purchase Price Allocation (in millions): Assets acquired: Current assets (including $9.6 million in cash) $ 26.2 Property, plant and equipment 302.1 Intangibles 281.0 Goodwill 16.9 Liabilities assumed: Current liabilities (24.1 ) Total identifiable net assets $ 602.1

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2015
Goodwill [Line Items]
Schedule of Goodwill	The table below provides a summary of the Partnership’s goodwill, by assigned reporting unit. June 30, 2015 December 31, 2014 (in millions) Texas $ 1,185.0 $ 1,168.2 Louisiana 786.8 786.8 Oklahoma 190.3 190.3 Crude and Condensate 142.1 112.5 Total $ 2,304.2 $ 2,257.8
Schedule of Finite-Lived Intangible Assets	The following table represents the Partnership's total purchased intangible assets for the periods stated (in millions): Gross Carrying Amount Accumulated Amortization Net Carrying Amount June 30, 2015 Customer relationships $ 906.8 $ (66.3 ) $ 840.5 December 31, 2014 Customer relationships $ 569.5 $ (36.5 ) $ 533.0
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	The following table summarizes the Partnership's estimated aggregate amortization expense for the next five years (in millions): 2015 (remaining) $ 33.2 2016 66.4 2017 66.4 2018 66.3 2019 65.5 Thereafter 542.7 Total $ 840.5

Affiliate Transactions (Tables)

Affiliate Transactions (Tables)	6 Months Ended
	Jun. 30, 2015
Related Party Transactions [Abstract]
Schedule of Related Party Transactions [Table Text Block]	The following presents financial information for the Predecessor's affiliate transactions and other transactions with Devon, all of which are settled through an adjustment to equity prior to March 7, 2014 (in millions): Six Months Ended June 30, 2014 Continuing Operations: Revenues - affiliates $ (436.4 ) Operating cost and expenses - affiliates 340.0 Net affiliate transactions (96.4 ) Capital expenditures 21.3 Other third-party transactions, net 53.0 Net third-party transactions 74.3 Net cash distributions to Devon - continuing operations (22.1 ) Non-cash distribution of net assets to Devon (23.2 ) Total net distributions per equity $ (45.3 ) Discontinued operations: Revenues - affiliates $ (10.4 ) Operating costs and expenses - affiliates 5.0 Net affiliate transactions (5.4 ) Capital expenditures 0.6 Other third-party transactions, net 0.4 Net third-party transactions 1.0 Net cash distributions to Devon and non-controlling interests - discontinued operations (4.4 ) Non-cash distribution of net assets to Devon (39.9 ) Total net distributions per equity $ (44.3 ) Total distributions- continuing and discontinued operations $ (89.6 )

Long-Term Debt (Tables)

Long-Term Debt (Tables)	6 Months Ended
	Jun. 30, 2015
Debt Disclosure [Abstract]
Indebtedness Table	As of June 30, 2015 and December 31, 2014, long-term debt consisted of the following (in millions): June 30, 2015 December 31, 2014 Partnership credit facility (due 2020), interest based on Prime and/or LIBOR plus an applicable margin, interest rate at June 30, 2015 and December 31, 2014 was 2.3% and 1.9%, respectively $ 150.0 $ 237.0 Senior unsecured notes (due 2019), net of discount of $0.4 million at June 30, 2015 and $0.5 million at December 31, 2014, which bear interest at the rate of 2.70% 399.6 399.5 Senior unsecured notes (due 2022), including a premium of $20.4 million at June 30, 2015 and $21.9 million at December 31, 2014, which bear interest at the rate of 7.125% 182.9 184.4 Senior unsecured notes (due 2024), net of premium of $3.0 million at June 30, 2015 and $3.2 million at December 31, 2014, which bear interest at the rate of 4.40% 553.0 553.2 Senior unsecured notes (due 2025), net of discount of $1.3 million at June 30, 2015, which bear interest at the rate of 4.15% 748.7 — Senior unsecured notes (due 2044), net of discount of $0.3 million at June 30, 2015 and December 31, 2014, which bear interest at the rate of 5.60% 349.7 349.7 Senior unsecured notes (due 2045), net of discount of $7.0 million at June 30, 2015 and $1.7 million at December 31, 2014, which bear interest at the rate of 5.05% 443.0 298.3 Other debt 0.3 0.4 Debt classified as long-term $ 2,827.2 $ 2,022.5

Partners' Capital (Tables)

Partners' Capital (Tables)	6 Months Ended
	Jun. 30, 2015
Partners' Capital [Abstract]
Distributions Made to Limited Partner, by Distribution	A summary of the distribution activity relating to the common units for the six months ended June 30, 2015 is provided below: Declaration period Distribution/unit Date paid/payable Fourth Quarter of 2014 $ 0.375 February 12, 2015 First Quarter of 2015 (1) (2) $ 0.38 May 14, 2015 Second Quarter of 2015 (3) $ 0.385 August 13, 2015
Schedule of Earnings Per Share, Basic and Diluted	The following table reflects the computation of basic and diluted earnings per limited partner unit for the period presented (in millions, except per unit amounts): Three Months Ended June 30, Six Months Ended 2015 2014 2015 2014* Limited partners’ interest in net income $ 35.7 $ 38.3 $ 44.7 $ 46.0 Distributed earnings allocated to: Common units (1) (2) (3) $ 117.6 $ 83.8 $ 214.4 $ 135.2 Unvested restricted units (1) 0.4 0.4 0.9 0.6 Total distributed earnings $ 118.0 $ 84.2 $ 215.3 $ 135.8 Undistributed loss allocated to: Common units (2) (3) $ (82.0 ) $ (45.7 ) $ (169.9 ) $ (89.5 ) Unvested restricted units (0.3 ) (0.2 ) (0.7 ) (0.3 ) Total undistributed loss $ (82.3 ) $ (45.9 ) $ (170.6 ) $ (89.8 ) Net income allocated to: 0 Common units (2) (3) $ 35.6 $ 38.1 $ 44.5 $ 45.7 Unvested restricted units 0.1 0.2 0.2 0.3 Total limited partners’ interest in net income $ 35.7 $ 38.3 $ 44.7 $ 46.0 Basic and diluted net income per unit: Basic $ 0.12 $ 0.17 $ 0.16 $ 0.20 Diluted $ 0.12 $ 0.17 $ 0.16 $ 0.20 * The six months ended June 30, 2014 amounts consist only of the period from March 7, 2014 through June 30, 2014. (1) Three months ended June 30, 2015 and 2014 represents a declared distribution of $0.385 per unit payable on August 13, 2015 and declared distribution of $0.365 per unit for common units paid on August 13, 2014, respectively. (2) Six months ended June 30, 2015 and 2014 represents distributions paid of $0.38 per unit on May 14, 2015 and a declared distribution of $0.385 per unit payable on August 13, 2015 and distributions paid of $0.36 per unit on May 14, 2014 and of $0.365 per unit on August 13, 2014. (3) Six months ended June 30, 2015 includes declared partial distribution of $0.15 per unit for Class E Common Units payable on August 13, 2015 and declared partial distribution of $0.18 per unit for Class D Common Units paid on May 14, 2015. The three and six months ended June 30, 2014 includes a declared partial distribution of $0.10 per unit for Class B Common Units paid on May 14, 2014.
Schedule of Weighted Average Number of Shares	The following are the unit amounts used to compute the basic and diluted earnings per limited partner unit for the periods presented (in millions): Three Months Ended June 30, Six Months Ended June 30, Basic weighted average units outstanding: 2015 2014 2015 2014* Weighted average limited partner basic common units outstanding 284.3 229.8 273.1 229.7 Weighted average Class C Common Units outstanding 6.8 — 4.0 — Weighted average Class E Common Units outstanding 14.1 — 7.1 — Total weighted average limited partner common units outstanding 305.2 229.8 284.2 229.7 Diluted weighted average units outstanding: Weighted average limited partner basic common units outstanding 305.2 229.8 284.2 229.7 Dilutive effect of restricted units issued 0.4 0.3 0.4 0.3 Total weighted average limited partner diluted common units outstanding 305.6 230.1 284.6 230.0 * The six months ended June 30, 2014 amounts consist only of the period from March 7, 2014 through June 30, 2014.
Incentive Distributions	Net income is allocated to the General Partner in an amount equal to its incentive distributions as described in Note 7(e). The General Partner's share of net income consists of incentive distributions to the extent earned, a deduction for unit-based compensation attributable to ENLC’s restricted units and the percentage interest of the Partnership’s net income adjusted for ENLC's unit-based compensation specifically allocated to the General Partner. The net income allocated to the General Partner is as follows for the periods presented (in millions). Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014* Income allocation for incentive distributions $ 11.3 $ 5.9 $ 20.1 $ 7.3 Unit-based compensation attributable to ENLC’s restricted units (3.9 ) (3.1 ) (10.9 ) (3.7 ) General Partner interest in net income 0.2 0.3 0.3 0.4 General Partner interest in drop down transactions 11.5 40.4 36.1 49.9 General Partner share of net income $ 19.1 $ 43.5 $ 45.6 $ 53.9 * The six months ended June 30, 2014 amounts consist only of the period from March 7, 2014 through June 30, 2014.

Asset Retirement Obligation (Ta

Asset Retirement Obligation (Table)	6 Months Ended
	Jun. 30, 2015
Asset Retirement Obligation Disclosure [Abstract]
Schedule of Change in Asset Retirement Obligation	The schedule below summarizes the changes in the Partnership’s asset retirement obligation: June 30, 2015 June 30, 2014 (in millions) Beginning asset retirement obligation $ 20.6 $ 8.1 Revisions to existing liabilities (4.0 ) 3.4 Liabilities acquired — 0.5 Accretion 0.3 0.3 Liabilities settled (3.2 ) — Ending asset retirement obligation $ 13.7 $ 12.3

Investment in Unconsolidated 31

Investment in Unconsolidated Affiliate (Tables)	6 Months Ended
	Jun. 30, 2015
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments	The following table shows the activity related to the Partnership’s investment in unconsolidated affiliates for the periods indicated (in millions): Gulf Coast Fractionators Howard Energy Partners Total Three months ended June 30, 2015 Distributions $ 4.2 $ 8.2 $ 12.4 Equity in income $ 2.9 $ 3.0 $ 5.9 June 30, 2014 (1) Distributions $ — $ 3.0 $ 3.0 Equity in income $ 3.9 $ 0.6 $ 4.5 Six months ended June 30, 2015 Distributions $ 6.9 $ 12.3 $ 19.2 Equity in income $ 6.3 $ 3.4 $ 9.7 June 30, 2014 (1) Distributions $ — $ 5.7 $ 5.7 Equity in income $ 8.0 $ 0.7 $ 8.7 (1) Includes income and distributions for the period from March 7, 2014 through June 30, 2014 for HEP. The following table shows the balances related to the Partnership’s investment in unconsolidated affiliates for the periods indicated (in millions): June 30, 2015 December 31, 2014 Gulf Coast Fractionators $ 53.4 $ 54.1 Howard Energy Partners 207.8 216.7 Total investments in unconsolidated affiliates $ 261.2 $ 270.8

Employee Incentive Plan (Tables

Employee Incentive Plan (Tables)	6 Months Ended
	Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	The following table presents a summary of the grant-date fair values of performance units granted and the related assumptions. EnLink Midstream Partners, LP Performance Units: 2015 Beginning TSR Price $ 27.68 Risk-free interest rate 0.99 % Volatility factor 33.01 % Distribution yield 5.66 % The following table presents a summary of the grant-date fair values of performance units granted and the related assumptions. EnLink Midstream, LLC Performance Units: 2015 Beginning TSR Price $ 34.24 Risk-free interest rate 0.99 % Volatility factor 33.02 % Distribution yield 2.98 %
Schedule of Nonvested Performance-based Units Activity [Table Text Block]	The following table presents a summary of the ENLC's performance units. Six Months Ended EnLink Midstream, LLC Performance Units: Number of Weighted Non-Vested, beginning of period — $ — Granted 105,080 40.5 Vested — — Non-vested, end of period 105,080 $ 40.5 Aggregate intrinsic value, end of period (in millions) $ 3.3 The following table presents a summary of the Partnership's performance units. Six Months Ended EnLink Midstream Partners, LP Performance Units: Number of Weighted Non-Vested, beginning of period — $ — Granted 118,126 35.41 Vested — — Non-vested, end of period 118,126 $ 35.41 Aggregate intrinsic value, end of period (in millions) $ 2.6
ScheduleofShareBasedCompensationRestrictedStockandRestrictedStockUnitsVestedandFairValueVested	Three Months Ended June 30, Six Months Ended June 30, EnLink Midstream, LLC Restricted Incentive Units: 2015 2015 Aggregate intrinsic value of units vested $ 0.6 $ 8.9 Fair value of units vested $ 0.6 $ 9.2 A summary of the restricted incentive units’ aggregate intrinsic value (market value at vesting date) and fair value of units vested during the three and six months ended June 30, 2015 are provided below (in millions): Three Months Ended June 30, 2015 Six Months Ended June 30, 2015 EnLink Midstream Partners, LP Restricted Incentive Units: Aggregate intrinsic value of units vested $ 0.4 $ 7.2 Fair value of units vested $ 0.5 $ 7.5
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs	The Partnership and ENLC each have similar unit-based compensation payment plans for officers and employees, which are described below. Unit-based compensation associated with ENLC's unit-based compensation plan awarded to officers and employees of the Partnership are recorded by the Partnership since ENLC has no substantial or managed operating activities other than its interests in the Partnership. Amounts recognized in the condensed consolidated financial statements with respect to these plans are as follows (in millions): Three Months Ended June 30, Six Months Ended 2015 2014 2015 2014 Cost of unit-based compensation allocated to Predecessor general and administrative expense (1) $ — $ — $ — $ 2.8 Cost of unit-based compensation charged to general and administrative expense 6.5 4.9 18.4 5.9 Cost of unit-based compensation charged to operating expense 1.1 0.8 3.0 1.0 Total amount charged to income $ 7.6 $ 5.7 $ 21.4 $ 9.7 (1) Unit-based compensation expense was treated as a contribution by the Predecessor in the Consolidated Statement of Changes in Partners' Equity in 2014.
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity	A summary of the restricted incentive units activity for the six months ended June 30, 2015 is provided below: Six Months Ended EnLink Midstream, LLC Restricted Incentive Units: Number of Weighted Average Grant-Date Fair Value Non-vested, beginning of period 986,472 $ 37.03 Granted 481,042 31.74 Vested* (258,094 ) 35.79 Forfeited (53,723 ) 36.15 Non-vested, end of period 1,155,697 $ 35.15 Aggregate intrinsic value, end of period (in millions) $ 35.9 * Vested units include 82,352 units withheld for payroll taxes paid on behalf of employees. A summary of the restricted incentive unit activity for the six months ended June 30, 2015 is provided below: Six Months Ended EnLink Midstream Partners, LP Restricted Incentive Units: Number of Units Weighted Average Grant-Date Fair Value Non-vested, beginning of period 1,022,191 $ 31.25 Granted 564,524 27.05 Vested* (261,409 ) 28.76 Forfeited (62,451 ) 31.09 Non-vested, end of period 1,262,855 $ 29.89 Aggregate intrinsic value, end of period (in millions) $ 27.7 * Vested units include 89,679 units withheld for payroll taxes paid on behalf of employees.

Derivatives (Tables)

Derivatives (Tables)	6 Months Ended
	Jun. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Interest Rate Derivatives [Table Text Block]	The impact of the interest rate swaps on net income is included in other income (expense) in the Condensed Consolidated Statements of Operations as part of interest expense, net, as follows (in millions): Three Months Ended June 30, Six Months Ended June 30, 2015 2015 Settlement gains on derivatives $ 3.6 $ 3.6
Commodity Swap	The components of gain (loss) on derivative activity in the Condensed Consolidated Statements of Operations relating to commodity swaps are as follows for the three and six months ended June 30, 2015 and 2014 (in millions): Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014* Change in fair value of derivatives $ (2.5 ) $ (1.3 ) $ (6.3 ) $ (2.0 ) Realized gain (loss) on derivatives 3.7 (0.3 ) 7.7 (0.9 ) Gain (loss) on derivative activity $ 1.2 $ (1.6 ) $ 1.4 $ (2.9 ) * The six months ended June 30, 2014 amounts consist only of the period from March 7, 2014 through June 30, 2014.
Fair Value of Derivative Assets and Liabilities relating to commodity swaps	The fair value of derivative assets and liabilities relating to commodity swaps are as follows (in millions): June 30, 2015 December 31, 2014 Fair value of derivative assets — current $ 14.0 $ 16.7 Fair value of derivative assets — long term 4.9 10.0 Fair value of derivative liabilities — current (3.5 ) (3.0 ) Fair value of derivative liabilities — long term (0.8 ) (2.0 ) Net fair value of derivatives $ 14.6 $ 21.7
Notional Amount and Fair Value of Derivative Instruments	Set forth below is the summarized notional volumes and fair value of all instruments held for price risk management purposes and related physical offsets at June 30, 2015 . The remaining term of the contracts extend no later than December 2016. June 30, 2015 Commodity Instruments Unit Volume Fair Value (In millions) NGL (short contracts) Swaps Gallons (60.5 ) $ 18.1 NGL (long contracts) Swaps Gallons 35.8 (2.6 ) Natural Gas (short contracts) Swaps MMBtu (3.7 ) 2.6 Natural Gas (long contracts) Swaps MMBtu 2.7 (3.5 ) Total fair value of derivatives $ 14.6
Derivatives Other than Cash Flow Hedges	The estimated fair value of derivative contracts by maturity date was as follows (in millions): Maturity Periods Less than one year One to two years More than two years Total fair value June 30, 2015 $ 10.5 $ 4.1 $ — $ 14.6

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value Derivative Instrument	Net liabilities measured at fair value on a recurring basis are summarized below (in millions): June 30, 2015 December 31, 2014 Level 2 Commodity Swaps* $ 14.6 $ 21.7 Total $ 14.6 $ 21.7 * The fair value of derivative contracts included in assets or liabilities for risk management activities represents the amount at which the instruments could be exchanged in a current arms-length transaction adjusted for credit risk of the Partnership and/or the counterparty as required under FASB ASC 820.
Fair Value Financial Instrument	Considerable judgment is required to develop the estimates of fair value; thus, the estimates provided below are not necessarily indicative of the amount the Partnership could realize upon the sale or refinancing of such financial instruments (in millions): June 30, 2015 December 31, 2014 Carrying Value Fair Value Carrying Fair Long-term debt $ 2,827.2 $ 2,757.1 $ 2,022.5 $ 2,026.1 Obligations under capital leases $ 18.7 $ 18.0 $ 20.3 $ 19.8

Segement Information (Tables)

Segement Information (Tables)	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Partnership Reportable Segement	Summarized financial information concerning the Partnership’s reportable segments is shown in the following tables: Texas Louisiana Oklahoma Crude and Condensate Corporate Totals (In millions) Three Months Ended June 30, 2015 Product sales $ 81.2 $ 401.2 $ 0.1 $ 473.7 $ — $ 956.2 Product sales-affiliates 35.0 17.0 1.7 14.0 (36.0 ) 31.7 Midstream services 36.0 63.2 9.8 26.9 — 135.9 Midstream services-affiliates 115.8 0.3 29.1 4.3 — 149.5 Cost of sales (118.4 ) (418.2 ) (2.0 ) (465.6 ) 36.0 (968.2 ) Operating expenses (45.5 ) (27.2 ) (9.1 ) (27.3 ) — (109.1 ) Gain on derivative activity — — — — 1.2 1.2 Segment profit $ 104.1 $ 36.3 $ 29.6 $ 26.0 $ 1.2 $ 197.2 Depreciation and amortization $ (42.8 ) $ (26.9 ) $ (11.8 ) $ (14.5 ) $ (1.7 ) $ (97.7 ) Goodwill $ 1,185.0 $ 786.8 $ 190.3 $ 142.1 $ — $ 2,304.2 Capital expenditures $ 80.9 $ 14.7 $ 12.3 $ 54.4 $ 2.5 $ 164.8 Three Months Ended June 30, 2014 Product sales $ 68.6 $ 514.2 $ — $ 105.1 $ — $ 687.9 Product sales-affiliates 19.3 1.7 — — (21.0 ) — Midstream services 14.6 37.9 — 14.6 — 67.1 Midstream services-affiliates 126.6 — 47.2 — — 173.8 Cost of sales (76.1 ) (508.1 ) — (98.7 ) 21.0 (661.9 ) Operating expenses (38.6 ) (16.5 ) (7.3 ) (11.5 ) — (73.9 ) Loss on derivative activity — — — — (1.6 ) (1.6 ) Segment profit $ 114.4 $ 29.2 $ 39.9 $ 9.5 $ (1.6 ) $ 191.4 Depreciation and amortization $ (32.8 ) $ (19.1 ) $ (11.6 ) $ (10.5 ) $ (0.5 ) $ (74.5 ) Goodwill $ 1,168.1 $ 786.7 $ 190.3 $ 112.5 $ — $ 2,257.6 Capital expenditures $ 75.4 $ 121.2 $ (2.2 ) $ 33.9 $ 3.2 $ 231.5 Six Months Ended June 30, 2015 Product sales $ 131.0 $ 773.4 $ 0.1 $ 722.4 $ — $ 1,626.9 Product sales-affiliates 60.9 24.1 5.4 14.0 (56.5 ) 47.9 Midstream services 55.6 121.1 20.5 41.1 — 238.3 Midstream services-affiliates 231.3 0.4 60.3 8.5 — 300.5 Cost of sales (185.6 ) (789.1 ) (7.1 ) (700.3 ) 56.5 (1,625.6 ) Operating expenses (92.6 ) (51.5 ) (16.1 ) (47.4 ) — (207.6 ) Gain on derivative activity — — — — 1.4 1.4 Segment profit $ 200.6 $ 78.4 $ 63.1 $ 38.3 $ 1.4 $ 381.8 Depreciation and amortization $ (79.2 ) $ (54.4 ) $ (25.3 ) $ (26.9 ) $ (3.2 ) $ (189.0 ) Goodwill $ 1,185.0 $ 786.8 $ 190.3 $ 142.1 $ — $ 2,304.2 Capital expenditures $ 154.4 $ 29.9 $ 17.5 $ 132.0 $ 6.7 $ 340.5 Six Months Ended June 30, 2014 Product sales $ 114.5 $ 649.1 $ 11.5 $ 126.2 $ — $ 901.3 Product sales-affiliates 311.9 2.3 147.9 — (25.7 ) 436.4 Midstream services 19.5 48.4 — 18.3 — 86.2 Midstream services-affiliates 167.0 — 62.3 — — 229.3 Cost of sales (333.4 ) (641.6 ) (133.9 ) (117.6 ) 25.7 (1,200.8 ) Operating expenses (70.3 ) (21.6 ) (14.0 ) (14.7 ) — (120.6 ) Loss on derivative activity — — — — (2.9 ) (2.9 ) Segment profit $ 209.2 $ 36.6 $ 73.8 $ 12.2 $ (2.9 ) $ 328.9 Depreciation and amortization $ (60.1 ) $ (24.3 ) $ (25.8 ) $ (12.2 ) $ (0.6 ) $ (123.0 ) Goodwill $ 1,168.1 $ 786.7 $ 190.3 $ 112.5 $ — $ 2,257.6 Capital expenditures $ 100.5 $ 143.3 $ 8.0 $ 45.0 $ 8.7 $ 305.5
Segment Table reconciliation to Condensed Consolidated Financial Statement	The table below presents information about segment assets as of June 30, 2015 and December 31, 2014 : June 30, 2015 December 31, 2014 Segment Identifiable Assets: (In millions) Texas $ 4,011.7 $ 3,302.9 Louisiana 3,195.5 3,316.5 Oklahoma 885.5 892.8 Crude and Condensate 1,210.6 871.8 Corporate 316.0 318.0 Total identifiable assets $ 9,619.3 $ 8,702.0
Reconciliation of Operating Profit (Loss) from Segments to Consolidated	The following table reconciles the segment profits reported above to the operating income as reported in the condensed consolidated statements of operations (in millions): Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 Segment profits $ 197.2 $ 191.4 $ 381.8 $ 328.9 General and administrative expenses (27.0 ) (25.8 ) (68.8 ) (41.3 ) Depreciation and amortization (97.7 ) (74.5 ) (189.0 ) (123.0 ) Operating income $ 72.5 $ 91.1 $ 124.0 $ 164.6

Discontinued Operations (Tables

Discontinued Operations (Tables)	6 Months Ended
	Jun. 30, 2015
Discontinued Operations and Disposal Groups [Abstract]
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures	The following schedule summarizes net income from discontinued operations (in millions): Six Months Ended June 30, 2014 Revenues: Revenues $ 6.8 Revenues - affiliates 10.5 Total revenues 17.3 Operating costs and expenses: Operating expenses 15.7 Total operating costs and expenses 15.7 Income before income taxes 1.6 Income tax provision 0.6 Net income $ 1.0

Supplemental Cash Flow Inform37

Supplemental Cash Flow Information (Tables)	6 Months Ended
	Jun. 30, 2015
Supplemental Cash Flow Elements [Abstract]
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]	The following schedule summarizes non-cash financing activities for the period presented. Six Months Ended June 30, 2015 (In millions) Non-cash financing activities: Non-cash issuance of common units (1) $ 180.0 Non-cash issuance of Class C Common Units (1) $ 180.0 Non-cash adjustment of interest in Midstream Holdings (2) $ 66.5

General (Details)

General (Details) - shares	May. 27, 2015	Feb. 17, 2015	Mar. 08, 2014	Mar. 31, 2014	Jun. 30, 2015	Mar. 07, 2014
Business Acquisition [Line Items]
Noncash or Part Noncash Acquisition, Interest Acquired				50.00%		50.00%
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares			120,542,441	120,542,441
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest					70.00%
EMH Drop Down [Member] | Affiliated Entity [Member] | Midstream Holdings [Member] | EnLink Midstream LP [Member]
Business Acquisition [Line Items]
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions	100.00%
EMH Drop Down [Member] | Affiliated Entity [Member] | EnLink Midstream LP [Member] | Midstream Holdings [Member] | Acacia [Member] | EnLink Midstream Holdings, LP [Member]
Business Acquisition [Line Items]
Related Party Transaction, Ownership Interest Transferred	25.00%	25.00%
Class D Common Unit [Member] | EMH Drop Down [Member] | Affiliated Entity [Member] | EnLink Midstream LP [Member] | Midstream Holdings [Member] | Acacia [Member] | EnLink Midstream Holdings, LP [Member]
Business Acquisition [Line Items]
Related Party Transaction, Amounts of Transaction, Shares		31,618,311
Class E Common Unit [Member] [Member] | EMH Drop Down [Member] | Affiliated Entity [Member] | EnLink Midstream LP [Member] | Midstream Holdings [Member] | Acacia [Member] | EnLink Midstream Holdings, LP [Member]
Business Acquisition [Line Items]
Related Party Transaction, Amounts of Transaction, Shares	36,629,888

Acquisition (Details Textuals)

Acquisition (Details Textuals) - USD ($) $ in Millions	May. 27, 2015	Apr. 01, 2015	Mar. 16, 2015	Feb. 17, 2015	Jan. 31, 2015	Nov. 01, 2014	Oct. 22, 2014	Mar. 08, 2014	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Mar. 07, 2014
Business Acquisition [Line Items]
Revenues									$ 1,274.5	$ 927.2			$ 2,215	$ 1,650.3
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares								120,542,441			120,542,441
Business Acquisition, Percentage of Voting Interests Acquired											50.00%				50.00%
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest									55.4	81.9			91.1	135.5
Net Income (Loss) Attributable to Noncontrolling Interest									(0.1)	0.1			0	0.1
Net Income (Loss) Attributable to Parent									55.5	81.8			91.1	135.4
General partner interest in net income									19.1	43.5			45.6	53.9
Capitalized Costs, Support Equipment and Facilities		$ 40
Business Combination, Historical Cost of Entity Under Common Control		132.7
Payments of Distributions to Affiliates		0
Crosstex Energy L.P. [Domain]
Business Acquisition [Line Items]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual												$ 968.8
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual												$ 3.2
VEX Pipeline [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross		$ 171
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares		338,159
Business Acquisition, Percentage of Voting Interests Acquired		100.00%
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned		$ 9
VEX [Member]
Business Acquisition [Line Items]
Revenues										0			4.2	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest										(2.1)			0.7	(3)
Net Income (Loss) Attributable to Noncontrolling Interest										0			0	0
Net Income (Loss) Attributable to Parent										(2.1)			0.7	(3)
General partner interest in net income										(2.1)			0.7	(3)
ENLK Historical [Member]
Business Acquisition [Line Items]
Revenues										924			2,210.8	1,646.5
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest										84.1			90.4	138.6
Net Income (Loss) Attributable to Noncontrolling Interest										42.7			15.3	53.1
Net Income (Loss) Attributable to Parent										41.4			75.1	85.5
General partner interest in net income										3.1			29.6	4
Chevron Acquisition [Member]
Business Acquisition [Line Items]
Business Acquisition, Transaction Costs									0.4				0.4
Payments to Acquire Businesses, Gross						$ 231.5
Business Acquisition, Percentage of Voting Interests Acquired						100.00%
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual													16
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual													(0.1)
Finite-Lived Intangible Asset, Useful Life						20 years
LPC [Member]
Business Acquisition [Line Items]
Business Acquisition, Transaction Costs									0.2				0.2
Business Combination, Consideration Transferred					$ 100
Business Acquisition, Percentage of Voting Interests Acquired					100.00%
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual													559.6
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual													(1.6)
Finite-Lived Intangible Asset, Useful Life					10 years
Cash Acquired from Acquisition						$ 21.1
Business Combination, Consideration Transferred, Other					$ 78.9
Coronado [Member]
Business Acquisition [Line Items]
Business Acquisition, Transaction Costs									$ 3				3
Business Combination, Consideration Transferred			$ 602.1
Business Combination, Initial Cash Consideration			$ 242.1
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares			6,704,285
Business Acquisition, Percentage of Voting Interests Acquired			100.00%
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual													61.5
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual													4.1
Finite-Lived Intangible Asset, Useful Life			10 years
Cash Acquired from Acquisition						$ 9.6
Business Combination, Consideration Transferred, Other			$ 232.5
E2 [Member]
Business Acquisition [Line Items]
Revenues										3.2				3.8
Business Combination, Consideration Transferred							$ 194
Payments to Acquire Businesses, Gross							$ 163
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares							1,000,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable							$ 31.2
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest										(0.1)				(0.1)
Net Income (Loss) Attributable to Noncontrolling Interest										0.1				0.1
Net Income (Loss) Attributable to Parent										(0.2)				(0.2)
General partner interest in net income										(0.2)				(0.2)
Midstream Holdings [Member]
Business Acquisition [Line Items]
Revenues										0			0	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest										0			0	0
Net Income (Loss) Attributable to Noncontrolling Interest										(42.7)			(15.3)	(53.1)
Net Income (Loss) Attributable to Parent										42.7			15.3	53.1
General partner interest in net income										$ 42.7			$ 15.3	$ 53.1
EnLink Midstream Holdings, LP [Member]
Business Acquisition [Line Items]
Limited Liability Company (LLC) or Limited Partnership (LP), Predecessor Entity(ies) to Business Combination											Midstream Holdings
Gulf Coast Fractionators [Member]
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage									38.75%		38.75%		38.75%
Common Class C [Member]
Business Acquisition [Line Items]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest													$ 0.8
Common Class C [Member] | Coronado [Member]
Business Acquisition [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares			6,704,285
Midstream Holdings [Member] | Affiliated Entity [Member] | EMH Drop Down [Member] | Acacia [Member] | EnLink Midstream LP [Member] | EnLink Midstream Holdings, LP [Member]
Business Acquisition [Line Items]
Related Party Transaction, Ownership Interest Transferred	25.00%			25.00%
Related Party Transaction, Amounts of Transaction				$ 925
Midstream Holdings [Member] | Affiliated Entity [Member] | EMH Drop Down [Member] | EnLink Midstream LP [Member]
Business Acquisition [Line Items]
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions	100.00%
Class D Common Unit [Member] | Midstream Holdings [Member] | Affiliated Entity [Member] | EMH Drop Down [Member] | Acacia [Member] | EnLink Midstream LP [Member] | EnLink Midstream Holdings, LP [Member]
Business Acquisition [Line Items]
Related Party Transaction, Amounts of Transaction, Shares				31,618,311
Class E Common Unit [Member] [Member] | Midstream Holdings [Member] | Affiliated Entity [Member] | EMH Drop Down [Member] | Acacia [Member] | EnLink Midstream LP [Member] | EnLink Midstream Holdings, LP [Member]
Business Acquisition [Line Items]
Related Party Transaction, Amounts of Transaction, Shares	36,629,888
Related Party Transaction, Amounts of Transaction	$ 900

Acquisition (Details)

Acquisition (Details) - USD ($) $ in Millions	Jun. 30, 2015	Mar. 16, 2015	Jan. 31, 2015	Dec. 31, 2014	Nov. 01, 2014	Jun. 30, 2014
Assets acquired [Abstract]
Goodwill	$ 2,304.2			$ 2,257.8		$ 2,257.6
LPC [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets			$ 107.4
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment			29.8
Assets acquired [Abstract]
Goodwill			29.6
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			43.2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities			(106)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent			(4)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net			$ 100
Coronado [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets		$ 26.2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment		302.1
Assets acquired [Abstract]
Goodwill		16.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		281
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities		(24.1)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net		$ 602.1
Chevron Acquisition [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment					$ 225.3
Assets acquired [Abstract]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles					13
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities					(6.8)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net					$ 231.5

Acquisition (Proforma) (Details

Acquisition (Proforma) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Business Acquisition [Line Items]
Pro forma total revenues (1)	$ 1,453.4	$ 2,337.1	$ 2,833.2
Pro forma net income	71.8	85.9	105.6
Pro forma net income attributable to EnLink Midstream Partners, LP	$ 71.7	$ 85.9	$ 105.5
Pro forma net income per common unit: Basic (usd per unit)	$ 0.11	$ 0.14	$ 0.11
Pro forma net income per common unit: Diluted (usd per unit)	$ 0.11	$ 0.14	$ 0.11

Acquisition (Recast) (Details)

Acquisition (Recast) (Details) - Class of Stock [Domain] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Business Acquisition [Line Items]
Revenues	$ 1,274.5	$ 927.2	$ 2,215	$ 1,650.3
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	55.4	81.9	91.1	135.5
Net Income (Loss) Attributable to Noncontrolling Interest	(0.1)	0.1	0	0.1
Net Income (Loss) Attributable to Parent	55.5	81.8	91.1	135.4
Net Income (Loss) Allocated to General Partners	$ 19.1	43.5	45.6	53.9
ENLK Historical [Member]
Business Acquisition [Line Items]
Revenues		924	2,210.8	1,646.5
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		84.1	90.4	138.6
Net Income (Loss) Attributable to Noncontrolling Interest		42.7	15.3	53.1
Net Income (Loss) Attributable to Parent		41.4	75.1	85.5
Net Income (Loss) Allocated to General Partners		3.1	29.6	4
Midstream Holdings [Member]
Business Acquisition [Line Items]
Revenues		0	0	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		0	0	0
Net Income (Loss) Attributable to Noncontrolling Interest		(42.7)	(15.3)	(53.1)
Net Income (Loss) Attributable to Parent		42.7	15.3	53.1
Net Income (Loss) Allocated to General Partners		42.7	15.3	53.1
E2 [Member]
Business Acquisition [Line Items]
Revenues		3.2		3.8
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		(0.1)		(0.1)
Net Income (Loss) Attributable to Noncontrolling Interest		0.1		0.1
Net Income (Loss) Attributable to Parent		(0.2)		(0.2)
Net Income (Loss) Allocated to General Partners		(0.2)		(0.2)
VEX [Member]
Business Acquisition [Line Items]
Revenues		0	4.2	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		(2.1)	0.7	(3)
Net Income (Loss) Attributable to Noncontrolling Interest		0	0	0
Net Income (Loss) Attributable to Parent		(2.1)	0.7	(3)
Net Income (Loss) Allocated to General Partners		$ (2.1)	$ 0.7	$ (3)

Acquisition (Phantom) (Details)

Acquisition (Phantom) (Details) - USD ($) $ in Millions	Mar. 16, 2015	Jan. 31, 2015	Nov. 01, 2014
Coronado [Member]
Business Acquisition [Line Items]
Cash Acquired from Acquisition			$ 9.6
Business Combination, Consideration Transferred, Other	$ 232.5
LPC [Member]
Business Acquisition [Line Items]
Cash Acquired from Acquisition			$ 21.1
Business Combination, Consideration Transferred, Other		$ 78.9

Goodwill and Intangible Asset44

Goodwill and Intangible Assets (Details) - USD ($) $ in Millions	Mar. 16, 2015	Jan. 31, 2015	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Goodwill [Line Items]
Goodwill			$ 2,304.2	$ 2,257.8	$ 2,257.6
Crude And Condensate Segment [Member]
Goodwill [Line Items]
Goodwill			142.1	112.5	112.5
Texas Operating Segment [Member]
Goodwill [Line Items]
Goodwill			1,185	1,168.2	1,168.1
Louisiana Operating Segment [Member]
Goodwill [Line Items]
Goodwill			786.8	786.8	786.7
Oklahoma Operating Segment [Member]
Goodwill [Line Items]
Goodwill			190.3	$ 190.3	$ 190.3
LPC [Member]
Goodwill [Line Items]
Goodwill		$ 29.6
Increase in the Partnership's goodwill			29.6
Finite-Lived Intangible Asset, Useful Life		10 years
Coronado [Member]
Goodwill [Line Items]
Goodwill	$ 16.9
Increase in the Partnership's goodwill			$ 16.9
Finite-Lived Intangible Asset, Useful Life	10 years
Minimum [Member]
Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life			05 years
Maximum [Member]
Goodwill [Line Items]
Finite-Lived Intangible Asset, Useful Life			20 years

Goodwill and Intangible Asset45

Goodwill and Intangible Assets (Intangible Asset by Major Class) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 906.8		$ 906.8		$ 569.5
Finite-Lived Intangible Assets, Accumulated Amortization	(66.3)		(66.3)		(36.5)
Finite-Lived Intangible Assets, Net	840.5		$ 840.5		$ 533
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			11 years 2 months
Amortization of Intangible Assets	$ 18.2	$ 11.3	$ 29.7	$ 13

Goodwill and Intangible Asset46

Goodwill and Intangible Assets (Amortization Expense Table) (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Finite-Lived Intangibles Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2,015	$ 33.2
2,016	66.4
2,017	66.4
2,018	66.3
2,019	65.5
Thereafter	542.7
Total	$ 840.5	$ 533

Affiliate Transactions (Textual

Affiliate Transactions (Textual) (Details) - Business Acquisition, Acquiree [Domain] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Mar. 31, 2014	Mar. 07, 2014
Related Party Transaction [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired						50.00%	50.00%
Due from Affiliate, Current	$ 112.2		$ 112.2		$ 121.6
Segment profit	197.2	$ 191.4	381.8	$ 328.9
Accounts payable to related party	21.6		21.6		$ 3
Affiliate general and administrative expense	27	25.8	68.8	41.3
Allocated Share-based Compensation Expense	7.6	5.7	21.4	9.7
Affiliated Entity [Member]
Related Party Transaction [Line Items]
Operating expenses - affiliates	0.2	0	0.2	5.9
Affiliate general and administrative expense	$ 0.1	$ 1.1	$ 0.1	9.6
Devon Energy Corporation [Member]
Related Party Transaction [Line Items]
Allocated Share-based Compensation Expense				2.8
Pension and Other Postretirement Benefit Expense				$ 1.6
Gulf Coast Fractionators [Member]
Related Party Transaction [Line Items]
Equity Method Investment, Ownership Percentage	38.75%		38.75%			38.75%
Sales Revenue, Net [Member] | Devon Energy Corporation [Member]
Related Party Transaction [Line Items]
Concentration Risk, Percentage	14.20%	18.70%	15.70%	40.30%
Transmission Service Agreement [Member] | Affiliated Entity [Member]
Related Party Transaction [Line Items]
Other Income			$ 0.2
Affiliate general and administrative expense		$ 1.1	$ 0.1	$ 1.3

Affiliate Transactions (Predece

Affiliate Transactions (Predecessor's Affiliate Transactions) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Related Party Transaction [Line Items]
Affiliate general and administrative expense	$ 27	$ 25.8	$ 68.8	$ 41.3
Capital expenditures	164.8	231.5	340.5	305.5
Net distributions from (to) related party				(89.6)
Affiliated Entity [Member]
Related Party Transaction [Line Items]
Affiliate general and administrative expense	0.1	1.1	0.1	9.6
Operating expenses - affiliates	$ 0.2	0	0.2	5.9
Transmission Service Agreement [Member] | Affiliated Entity [Member]
Related Party Transaction [Line Items]
Affiliate general and administrative expense		$ 1.1	$ 0.1	1.3
Continuing Operations [Member] | Affiliated Entity [Member]
Related Party Transaction [Line Items]
Operating revenues - affiliates				(436.4)
Operating expenses - affiliates				340
Net Related Party transactions				(96.4)
Capital expenditures				21.3
Other Expenses				53
Total Third-Party Transactions				74.3
Net distributions from (to) related party				(45.3)
Net distributions from (to) related party, non-cash				(23.2)
Continuing Operations [Member] | Devon Energy Corporation [Member]
Related Party Transaction [Line Items]
Net distributions from (to) related party				(22.1)
Discontinued Operations [Member]
Related Party Transaction [Line Items]
Net distributions from (to) related party				(4.4)
Discontinued Operations [Member] | Affiliated Entity [Member]
Related Party Transaction [Line Items]
Operating revenues - affiliates				(10.4)
Operating expenses - affiliates				5
Net Related Party transactions				(5.4)
Capital expenditures				0.6
Other Expenses				0.4
Total Third-Party Transactions				1
Net distributions from (to) related party				(44.3)
Discontinued Operations [Member] | Devon Energy Corporation [Member]
Related Party Transaction [Line Items]
Net distributions from (to) related party, non-cash				$ (39.9)

Long-Term Debt (Indebtedness Ta

Long-Term Debt (Indebtedness Table) (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding	$ 150	$ 237
Other Long-term Debt	0.3	0.4
Long-term Debt	2,827.2	2,022.5
2.7% Senior Notes due 2019 [Member]
Debt Instrument [Line Items]
Senior Notes	399.6	399.5
7.125% Senior Notes due 2022 [Member]
Debt Instrument [Line Items]
Senior Notes	182.9	184.4
4.4% Senior Notes due 2024 [Member]
Debt Instrument [Line Items]
Senior Notes	553	553.2
4.15% Senior Notes due 2025 [Member] [Member]
Debt Instrument [Line Items]
Senior Notes	748.7	0
5.6% Senior Notes due 2044 [Member]
Debt Instrument [Line Items]
Senior Notes	349.7	349.7
5.05% Senior Notes due 2045 [Member]
Debt Instrument [Line Items]
Senior Notes	$ 443	$ 298.3

Long-Term Debt (Narrative) (Det

Long-Term Debt (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	May. 12, 2015	Feb. 05, 2015	Dec. 31, 2014	Feb. 20, 2014
Debt Instrument [Line Items]
Other Long-term Debt	$ 0.3			$ 0.4
Line of Credit Facility, Maximum Borrowing Capacity	1,500
Line Of Credit Facility, Additional Borrowing Limit	500
Letters of Credit Outstanding, Amount	2.9
Long-term Debt	2,827.2			2,022.5
Line of Credit Facility, Amount Outstanding	150			$ 237
Line of Credit Facility, Remaining Borrowing Capacity	$ 1,340
Letter of Credit [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity					$ 500
4.15% Senior Notes due 2025 [Member] [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.15%	4.15%		4.15%
Senior Notes	$ 748.7			$ 0
Debt Instrument, Unamortized Discount (Premium), Net	$ (1.3)			$ 0
Debt Instrument, Face Amount		$ 750
Selling Priceof Debt Instrument		99.827%
4.15% Senior Notes due 2025 [Member] [Member] | Debt Instrument, Redemption, Period One [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	100.00%
4.15% Senior Notes due 2025 [Member] [Member] | Debt Instrument, Redemption, Period Two [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	100.00%
4.4% Senior Notes due 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.40%			4.40%
Senior Notes	$ 553			$ 553.2
Debt Instrument, Unamortized Discount (Premium), Net	$ 3			$ 3.2
5.6% Senior Notes due 2044 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.60%			5.60%
Senior Notes	$ 349.7			$ 349.7
Debt Instrument, Unamortized Discount (Premium), Net	$ (0.3)			$ (0.3)
5.05% Senior Notes due 2045 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.05%	5.05%		5.05%
Senior Notes	$ 443			$ 298.3
Debt Instrument, Unamortized Discount (Premium), Net	$ (7)			$ (1.7)
Debt Instrument, Face Amount		$ 150
Selling Priceof Debt Instrument		96.381%
5.05% Senior Notes due 2045 [Member] | Debt Instrument, Redemption, Period One [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	100.00%
5.05% Senior Notes due 2045 [Member] | Debt Instrument, Redemption, Period Two [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	100.00%
Unsecured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 900
Maximum [Member]
Debt Instrument [Line Items]
Leverage ratios	5
Conditional acquisition purchase price	$ 50
Revolving Credit Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Leverage ratios	5.5
Pre Amendment [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity					$ 1,000
Post Amendment [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity			$ 1,500

Long-Term Debt (Percentages Per

Long-Term Debt (Percentages Per Annum) (Details)	6 Months Ended
	Jun. 30, 2015
Base Rate [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Interest Rate During Period	0.50%
Eurodollar [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Interest Rate During Period	1.00%

Long-Term Debt (Details)

Long-Term Debt (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014	May. 12, 2015
Line of Credit [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate During Period	2.30%	1.90%
2.7% Senior Notes due 2019 [Member]
Debt Instrument [Line Items]
Senior notes fixed interest rate	2.70%	2.70%
Debt Instrument, Unamortized Discount (Premium), Net	$ (0.4)	$ (0.5)
7.125% Senior Notes due 2022 [Member]
Debt Instrument [Line Items]
Senior notes fixed interest rate	7.125%	7.125%
Debt Instrument, Unamortized Discount (Premium), Net	$ 20.4	$ 21.9
4.4% Senior Notes due 2024 [Member]
Debt Instrument [Line Items]
Senior notes fixed interest rate	4.40%	4.40%
Debt Instrument, Unamortized Discount (Premium), Net	$ 3	$ 3.2
5.6% Senior Notes due 2044 [Member]
Debt Instrument [Line Items]
Senior notes fixed interest rate	5.60%	5.60%
Debt Instrument, Unamortized Discount (Premium), Net	$ (0.3)	$ (0.3)
5.05% Senior Notes due 2045 [Member]
Debt Instrument [Line Items]
Senior notes fixed interest rate	5.05%	5.05%	5.05%
Debt Instrument, Unamortized Discount (Premium), Net	$ (7)	$ (1.7)
4.15% Senior Notes due 2025 [Member] [Member]
Debt Instrument [Line Items]
Senior notes fixed interest rate	4.15%	4.15%	4.15%
Debt Instrument, Unamortized Discount (Premium), Net	$ (1.3)	$ 0

Partners' Capital (Details Text

Partners' Capital (Details Textuals) - USD ($) $ / shares in Units, $ in Millions	May. 27, 2015	Mar. 16, 2015	Feb. 17, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014	Nov. 30, 2014
Subsidiary Sale Of Stock [Line Items]
Percentage of avaliable cash to distribute				100.00%					100.00%
Number of days from end of quarter for distribution									45 days
Distribution Made to Limited Partner, Distribution Date				Aug. 13, 2015	May 14, 2015	Feb. 12, 2015
Distribution Made to Limited Partner, Distributions Declared, Per Unit				$ 0.385	$ 0.38	$ 0.375	$ 0.365	$ 0.36
Proceeds from issuance of common units									$ 4.1	$ 19.9
General Partner [Member] | Incentive Distribution Percentage, Level1 [Member]
Subsidiary Sale Of Stock [Line Items]
Incentive Distribution Percentage Levels									13.00%
Incentive Distribution, Distribution Per Unit									$ 0.25
General Partner [Member] | Incentive Distribution Percentage, Level2 [Member]
Subsidiary Sale Of Stock [Line Items]
Incentive Distribution Percentage Levels									23.00%
Incentive Distribution, Distribution Per Unit									$ 0.3125
General Partner [Member] | Incentive Distribution Percentage, Level3 [Member]
Subsidiary Sale Of Stock [Line Items]
Incentive Distribution Percentage Levels									48.00%
Incentive Distribution, Distribution Per Unit									$ 0.375
EDA [Member] | BMO Capital Markets Corp. [Member]
Subsidiary Sale Of Stock [Line Items]
AggregateAmountOfEquitySecuritiesAllowedUnderEquityDistributionAgreement											$ 350
Proceeds from issuance of common units									$ 4.1
Payments of Stock Issuance Costs									0.1
AggregateAmountOfEquitySecurityRemainingUnderEquityDistributionAgreement				$ 337.6					$ 337.6
EMH Drop Down [Member] | EnLink Midstream Holdings, LP [Member] | Midstream Holdings [Member] | Affiliated Entity [Member] | Acacia [Member] | EnLink Midstream LP [Member]
Subsidiary Sale Of Stock [Line Items]
Related Party Transaction, Ownership Interest Transferred	25.00%		25.00%
EMH Drop Down [Member] | EnLink Midstream Holdings, LP [Member] | Midstream Holdings [Member] | Affiliated Entity [Member] | Class E Common Unit [Member] [Member] | Acacia [Member] | EnLink Midstream LP [Member]
Subsidiary Sale Of Stock [Line Items]
Related Party Transaction, Amounts of Transaction, Shares	36,629,888
EMH Drop Down [Member] | EnLink Midstream Holdings, LP [Member] | Midstream Holdings [Member] | Affiliated Entity [Member] | Class D Common Unit [Member] | Acacia [Member] | EnLink Midstream LP [Member]
Subsidiary Sale Of Stock [Line Items]
Related Party Transaction, Amounts of Transaction, Shares			31,618,311
Class E Common Unit [Member]
Subsidiary Sale Of Stock [Line Items]
Distribution Made to Limited Partner, Distributions Declared, Per Unit				$ 0.15
Common Class C [Member]
Subsidiary Sale Of Stock [Line Items]
Distribution Made to Limited Partner, Distributions Declared, Per Unit					0.38
Class D Common Unit [Member]
Subsidiary Sale Of Stock [Line Items]
Distribution Made to Limited Partner, Distributions Declared, Per Unit					$ 0.18
Capital Unit, Class B [Member]
Subsidiary Sale Of Stock [Line Items]
Distribution Made to Limited Partner, Distributions Declared, Per Unit								$ 0.10
Common Class C [Member]
Subsidiary Sale Of Stock [Line Items]
Distribution Made to Limited Partner, Distributions Declared, Per Unit				$ 0.385
Stock Issued During Period, Shares, Acquisitions		6,704,285
Paid In Kind Dividends				120,622	99,794

Partners' Capital (EPU Computat

Partners' Capital (EPU Computation Schedule) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Capital Unit [Line Items]
Distributed Earnings	$ 118	$ 84.2	$ 215.3	$ 135.8
Limited partners' interest in net income attributable to EnLink Midstream Partners, LP	35.7	38.3	44.7	46
Undistributed Earnings, Basic	$ (82.3)	$ (45.9)	$ (170.6)	$ (89.8)
Earnings Per Share, Basic	$ 0.12	$ 0.17	$ 0.16	$ 0.20
Diluted per common unit	$ 0.12	$ 0.17	$ 0.16	$ 0.20
Common Unit [Member]
Capital Unit [Line Items]
Distributed Earnings	$ 117.6	$ 83.8	$ 214.4	$ 135.2
Limited partners' interest in net income attributable to EnLink Midstream Partners, LP	35.6	38.1	44.5	45.7
Undistributed Earnings, Basic	(82)	(45.7)	(169.9)	(89.5)
Restricted Stock Units (RSUs) [Member]
Capital Unit [Line Items]
Distributed Earnings	0.4	0.4	0.9	0.6
Limited partners' interest in net income attributable to EnLink Midstream Partners, LP	0.1	0.2	0.2	0.3
Undistributed Earnings, Basic	$ (0.3)	$ (0.2)	$ (0.7)	$ (0.3)

Partners' Capital (Weighted Ave

Partners' Capital (Weighted Average Schedule) (Details) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Class of Stock [Line Items]
Weighted Average Number of Shares Outstanding, Basic	305.2	229.8	284.2	229.7
Dilutive Securities, Effect on Basic Earnings Per Share, Dilutive Convertible Securities	0.4	0.3	0.4	0.3
Weighted Average Number of Shares Outstanding, Diluted	305.6	230.1	284.6	230
Common Class C [Member]
Class of Stock [Line Items]
Weighted Average Limited Partnership Units Outstanding, Basic	6.8	0	4	0
Common Units [Member]
Class of Stock [Line Items]
Weighted Average Limited Partnership Units Outstanding, Basic	284.3	229.8	273.1	229.7
Class E Common Unit [Member] [Member]
Class of Stock [Line Items]
Weighted Average Limited Partnership Units Outstanding, Basic	14.1	0	7.1	0

Partners' Capital (Allocated Ne

Partners' Capital (Allocated Net Income (loss) to the General Partner) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Incentive Distribution Made to Managing Member or General Partner [Line Items]
General Partner share of net income	$ 19.1	$ 43.5	$ 45.6	$ 53.9
General Partner [Member]
Incentive Distribution Made to Managing Member or General Partner [Line Items]
Income allocation for incentive distributions	11.3	5.9	20.1	7.3
Unit-based compensation attributable to ENLC’s restricted units	(3.9)	(3.1)	(10.9)	(3.7)
General Partner interest in net income	0.2	0.3	0.3	0.4
General Partner interest in asset drop	$ 11.5	$ 40.4	$ 36.1	$ 49.9

Partners Capital (Issuance of C

Partners Capital (Issuance of Common Units) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Nov. 30, 2014
Class of Stock [Line Items]
Issuance of common units	$ 364.1
Proceeds from issuance of common units	4.1	$ 19.9
EDA [Member] | BMO Capital Markets Corp. [Member]
Class of Stock [Line Items]
AggregateAmountOfEquitySecuritiesAllowedUnderEquityDistributionAgreement			$ 350
Proceeds from issuance of common units	4.1
Payments of Stock Issuance Costs	0.1
AggregateAmountOfEquitySecurityRemainingUnderEquityDistributionAgreement	337.6
EDA [Member] | BMO Capital Markets Corp, Merrilly Lynch, Pierce, Fenner & Smith Incorporated, Citigroup Global Markets Inc, Jeffries LLC, Raymond James and Associates, Inc and RBC Capital Markets LLC [Member]
Class of Stock [Line Items]
Issuance of common units	0.2
Common Class C [Member]
Class of Stock [Line Items]
Issuance of common units	$ 180

Asset Retirement Obligation (De

Asset Retirement Obligation (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligation	$ 13.7	$ 12.3	$ 20.6	$ 8.1
Asset Retirement Obligation, Revision of Estimate	(4)	3.4
Asset Retirement Obligation, Liabilities Incurred	0	0.5
Asset Retirement Obligation, Accretion Expense	0.3	0.3
Asset Retirement Obligation, Liabilities Settled	(3.2)	$ 0
Asset Retirement Obligation, Current	$ 1.1		$ 8.2

Investment in Unconsolidated 59

Investment in Unconsolidated Affiliate (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014		Jun. 30, 2015	Jun. 30, 2014		Dec. 31, 2014
Schedule of Equity Method Investments [Line Items]
Cash Dividends Paid to Parent Company by Unconsolidated Subsidiaries	$ 12.4	$ 3	[1]	$ 19.2	$ 5.7	[1]
Income (Loss) from Equity Method Investments	5.9	4.5		9.7	8.7
Income (Loss) from Equity Method Investments	261.2			261.2			$ 270.8
Gulf Coast Fractionators [Member]
Schedule of Equity Method Investments [Line Items]
Cash Dividends Paid to Parent Company by Unconsolidated Subsidiaries	4.2	0		6.9	0
Income (Loss) from Equity Method Investments	2.9	3.9		6.3	8
Income (Loss) from Equity Method Investments	$ 53.4			$ 53.4			54.1
Equity Method Investment, Ownership Percentage	38.75%			38.75%
Howard Energy Partners [Member]
Schedule of Equity Method Investments [Line Items]
Cash Dividends Paid to Parent Company by Unconsolidated Subsidiaries	$ 8.2	3	[1]	$ 12.3	5.7	[1]
Income (Loss) from Equity Method Investments	3	$ 0.6		3.4	$ 0.7
Income (Loss) from Equity Method Investments	$ 207.8			$ 207.8			$ 216.7
Equity Method Investment, Ownership Percentage	30.60%			30.60%
[1]	Includes income and distributions for the period from March 7, 2014 through June 30, 2014 for HEP.

Employee Incentive Plan (Textua

Employee Incentive Plan (Textuals) (Details) - Jun. 30, 2015 - USD ($) $ in Millions	Total	Total
ENLK Restricted Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period		3 years
ENLC Restricted Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period		3 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 0.6	$ 9.2
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period		258,094
Restricted Stock Units (RSUs) [Member] | ENLK Restricted Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	0.5	$ 7.5
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period		261,409
Restricted Stock Units (RSUs) [Member] | ENLK Restricted Unit March Vest [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value		$ 3.4
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period		128,675
Restricted Stock Units (RSUs) [Member] | ENLC Restricted Units March Vest [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value		$ 3.4
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period		102,543
Restricted Stock [Member] | ENLC Restricted Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to non-vested restricted incentive units	24.1	$ 24.1
Unrecognized compensation costs, weighted average period for recognition		1 year 11 months
Enlink midstream, LLC [Member] | Performance Based Restricted Unit [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to non-vested restricted incentive units	3.7	$ 3.7
Unrecognized compensation costs, weighted average period for recognition		2 years 6 months
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period		0
EnLink Midstream Partners, LP [Member] | Performance Based Restricted Unit [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to non-vested restricted incentive units	3.6	$ 3.6
Unrecognized compensation costs, weighted average period for recognition		2 years 6 months
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period		0
EnLink Midstream Partners, LP [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to non-vested restricted incentive units	$ 24.3	$ 24.3
Unrecognized compensation costs, weighted average period for recognition		2 years
Minimum [Member] | EnLink Midstream Partners, LP [Member] | Performance Based Restricted Unit [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		0.00%
Minimum [Member] | Enlink midstream, LLC [Member] | Performance Based Restricted Unit [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		0.00%
Maximum [Member] | EnLink Midstream Partners, LP [Member] | Performance Based Restricted Unit [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		200.00%
Maximum [Member] | Enlink midstream, LLC [Member] | Performance Based Restricted Unit [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		200.00%

Employee Incentive Plan (Expens

Employee Incentive Plan (Expense Schedule) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	$ 7.6	$ 5.7	$ 21.4	$ 9.7
General and Administrative Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	6.5	4.9	18.4	5.9
Operating Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	1.1	0.8	3	1
Predecessor [Member] | General and Administrative Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	$ 0	$ 0	$ 0	$ 2.8

Employee Incentive Plan (Compen

Employee Incentive Plan (Compensation Schedule) (Details) - Jun. 30, 2015 - USD ($) $ / shares in Units, $ in Millions	Total
ENLK Restricted Units [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Paid for Tax Withholding for Share Based Compensation	89,679
Number of Units
Non-vested, beginning of period (Units)	1,022,191
Granted	564,524
Vested	(261,409)
Forfeited	(62,451)
Non-vested, end of period (Units)	1,262,855
Weighted Average Grant-Date Fair Value
Non-vested, beginning of period	$ 31.25
Granted	27.05
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	28.76
Forfeited	31.09
Non-vested, end of period	$ 29.89
Aggregate intrinsic value, end of period (in thousands)	$ 27.7
ENLC Restricted Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Paid for Tax Withholding for Share Based Compensation	82,352
Number of Units
Non-vested, beginning of period (Units)	986,472
Granted	481,042
Vested	(258,094)
Forfeited	(53,723)
Non-vested, end of period (Units)	1,155,697
Weighted Average Grant-Date Fair Value
Non-vested, beginning of period	$ 37.03
Granted	31.74
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	35.79
Forfeited	36.15
Non-vested, end of period	$ 35.15
Aggregate intrinsic value, end of period (in thousands)	$ 35.9
Enlink midstream, LLC [Member] | Performance Based Restricted Unit [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement Grant Date Fair Value	$ 34.24
Number of Units
Non-vested, beginning of period (Units)	0
Granted	105,080
Vested	0
Non-vested, end of period (Units)	105,080
Weighted Average Grant-Date Fair Value
Non-vested, beginning of period	$ 0
Granted	40.50
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	0
Non-vested, end of period	$ 40.50
Aggregate intrinsic value, end of period (in thousands)	$ 3.3
Fair Value Assumptions, Risk Free Interest Rate	0.99%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	33.02%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate	2.98%
EnLink Midstream Partners, LP [Member] | Performance Based Restricted Unit [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement Grant Date Fair Value	$ 27.68
Number of Units
Non-vested, beginning of period (Units)	0
Granted	118,126
Vested	0
Non-vested, end of period (Units)	118,126
Weighted Average Grant-Date Fair Value
Non-vested, beginning of period	$ 0
Granted	35.41
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	0
Non-vested, end of period	$ 35.41
Aggregate intrinsic value, end of period (in thousands)	$ 2.6
Fair Value Assumptions, Risk Free Interest Rate	0.99%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	33.01%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate	5.66%

Employee Incentive Plan (Intrin

Employee Incentive Plan (Intrinsic and Fair Value of Units Vested) (Details) - Jun. 30, 2015 - USD ($) $ in Millions	Total	Total
ENLC Restricted Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodIntrinsicValue1	$ 0.6	$ 8.9
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	0.6	9.2
ENLK Restricted Units [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodIntrinsicValue1	0.4	7.2
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 0.5	$ 7.5

Employee Incentive Plans Total

Employee Incentive Plans Total Shareholder Return Unit Summary (Details) - 6 months ended Jun. 30, 2015 - Performance Based Restricted Unit [Member] - $ / shares	Total
EnLink Midstream Partners, LP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement Grant Date Fair Value	$ 27.68
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate	5.66%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	33.01%
Fair Value Assumptions, Risk Free Interest Rate	0.99%
Enlink midstream, LLC [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement Grant Date Fair Value	$ 34.24
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate	2.98%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	33.02%
Fair Value Assumptions, Risk Free Interest Rate	0.99%

Derivatives (Summary of Derivat

Derivatives (Summary of Derivative Income Expense) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative activity	$ 1.2	$ (1.6)	$ 1.4	$ (2.9)
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Change in fair value of derivatives	3.6		3.6
Commodity Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(2.5)	(1.3)	(6.3)	(2)
Change in fair value of derivatives	$ 3.7	$ (0.3)	$ 7.7	$ (0.9)

Derivatives (Schedule of Deriva

Derivatives (Schedule of Derivative Assets Liabilities) (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Derivatives, Fair Value [Line Items]
Fair value of derivative assets — current	$ 14	$ 16.7
Fair value of derivative assets — long term	4.9	10
Fair value of derivative liabilities — current	(3.5)	(3)
Fair value of derivative liabilities — long term	(0.8)	(2)
Net fair value of derivatives	14.6	$ 21.7
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Net fair value of derivatives	$ 14.6

Derivatives (Derivatives Outsta

Derivatives (Derivatives Outstanding) (Details) gal in Millions, MMBTU in Millions, $ in Millions	Jun. 30, 2015USD ($)galMMBTU	Dec. 31, 2014USD ($)
Derivative [Line Items]
Total mark to market derivatives	$ 14.6	$ 21.7
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Total mark to market derivatives	$ 14.6
Liquids [Member] | Short Contracts [Member]
Derivative [Line Items]
Derivative Nonmonetary Notional Amount | gal	(60.5)
Total mark to market derivatives	$ 18.1
Liquids [Member] | Long Contracts [Member]
Derivative [Line Items]
Derivative Nonmonetary Notional Amount | gal	(35.8)
Total mark to market derivatives	$ (2.6)
Gas [Member] | Short Contracts [Member]
Derivative [Line Items]
Derivative Nonmonetary Notional Amount | MMBTU	(3.7)
Total mark to market derivatives	$ 2.6
Gas [Member] | Long Contracts [Member]
Derivative [Line Items]
Derivative Nonmonetary Notional Amount | MMBTU	(2.7)
Total mark to market derivatives	$ (3.5)

Derivatives (Details Textuals)

Derivatives (Details Textuals) $ in Millions	Jun. 30, 2015USD ($)
Derivative [Line Items]
Maximum counterparty loss	$ (18.9)
Maximum counterparty loss with netting feature	$ (14.6)

Derivatives (Derivatives Other

Derivatives (Derivatives Other Than Cash Flow Hedges Table) (Details) $ in Millions	Jun. 30, 2015USD ($)
Derivative [Line Items]
Derivative Instruments at fair value	$ 14.6
Market Approach Valuation Technique [Member] | Less than on year
Derivative [Line Items]
Derivative Instruments at fair value	10.5
Market Approach Valuation Technique [Member] | One to two years
Derivative [Line Items]
Derivative Instruments at fair value	4.1
Market Approach Valuation Technique [Member] | More than two years
Derivative [Line Items]
Derivative Instruments at fair value	$ 0

Fair Value Measurement (Fair Me

Fair Value Measurement (Fair Measurement on a Recurring Nonrecurring Basis) (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Fair Value, Inputs, Level 2 [Member] | Commodity Swap [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net Fair value of derivatives	$ 14.6	$ 21.7

Fair Value Measurement (Fair Va

Fair Value Measurement (Fair Value of Financial Instrument) (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Obligations under capital lease	$ 18.7	$ 20.3
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt, Fair Value	2,757.1	2,026.1
Obligations under capital lease	$ 18	$ 19.8

Fair Value Measurement (Details

Fair Value Measurement (Details Textuals) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding	$ 150	$ 237
Long-term Debt	2,827.2	2,022.5
Unsecured Debt	$ 2,676.9	$ 1,785.1
Debt Instrument, Interest Rate, Effective Percentage Rate Range, Minimum	2.70%	2.70%
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum	7.10%	7.10%

Commitments and Contingencies (

Commitments and Contingencies (Details) $ in Millions	1 Months Ended
	Aug. 31, 2014USD ($)
Gain Contingencies [Line Items]
Gain on Litigation Settlement	$ 6.1

Segment Information (Details)

Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Product sales	$ 956.2	$ 687.9	$ 1,626.9	$ 901.3
Product sales - affiliates	31.7	0	47.9	436.4
Midstream services	135.9	67.1	238.3	86.2
Midstream services-affiliates	149.5	173.8	300.5	229.3
Cost of sales	(968.2)	(661.9)	(1,625.6)	(1,200.8)
Operating expenses	(109.1)	(73.9)	(207.6)	(120.6)
Gain (loss) on derivative activity	1.2	(1.6)	1.4	(2.9)
Segment profit	197.2	191.4	381.8	328.9
Depreciation and amortization	(97.7)	(74.5)	(189)	(123)
Goodwill	2,304.2	2,257.6	2,304.2	2,257.6	$ 2,257.8
Capital expenditures	164.8	231.5	340.5	305.5
Identifiable assets	9,619.3		9,619.3		8,702
Texas Operating Segment [Member]
Segment Reporting Information [Line Items]
Product sales	81.2	68.6	131	114.5
Product sales - affiliates	35	19.3	60.9	311.9
Midstream services	36	14.6	55.6	19.5
Midstream services-affiliates	115.8	126.6	231.3	167
Cost of sales	(118.4)	(76.1)	(185.6)	(333.4)
Operating expenses	(45.5)	(38.6)	(92.6)	(70.3)
Gain (loss) on derivative activity	0	0	0	0
Segment profit	104.1	114.4	200.6	209.2
Depreciation and amortization	(42.8)	(32.8)	(79.2)	(60.1)
Goodwill	1,185	1,168.1	1,185	1,168.1	1,168.2
Capital expenditures	80.9	75.4	154.4	100.5
Identifiable assets	4,011.7		4,011.7		3,302.9
Louisiana Operating Segment [Member]
Segment Reporting Information [Line Items]
Product sales	401.2	514.2	773.4	649.1
Product sales - affiliates	17	1.7	24.1	2.3
Midstream services	63.2	37.9	121.1	48.4
Midstream services-affiliates	0.3	0	0.4	0
Cost of sales	(418.2)	(508.1)	(789.1)	(641.6)
Operating expenses	(27.2)	(16.5)	(51.5)	(21.6)
Gain (loss) on derivative activity	0	0	0	0
Segment profit	36.3	29.2	78.4	36.6
Depreciation and amortization	(26.9)	(19.1)	(54.4)	(24.3)
Goodwill	786.8	786.7	786.8	786.7	786.8
Capital expenditures	14.7	121.2	29.9	143.3
Identifiable assets	3,195.5		3,195.5		3,316.5
Oklahoma Operating Segment [Member]
Segment Reporting Information [Line Items]
Product sales	0.1	0	0.1	11.5
Product sales - affiliates	1.7	0	5.4	147.9
Midstream services	9.8	0	20.5	0
Midstream services-affiliates	29.1	47.2	60.3	62.3
Cost of sales	(2)	0	(7.1)	(133.9)
Operating expenses	(9.1)	(7.3)	(16.1)	(14)
Gain (loss) on derivative activity	0	0	0	0
Segment profit	29.6	39.9	63.1	73.8
Depreciation and amortization	(11.8)	(11.6)	(25.3)	(25.8)
Goodwill	190.3	190.3	190.3	190.3	190.3
Capital expenditures	12.3	(2.2)	17.5	8
Identifiable assets	885.5		885.5		892.8
Crude And Condensate Segment [Member]
Segment Reporting Information [Line Items]
Product sales	473.7	105.1	722.4	126.2
Product sales - affiliates	14	0	14	0
Midstream services	26.9	14.6	41.1	18.3
Midstream services-affiliates	4.3	0	8.5	0
Cost of sales	(465.6)	(98.7)	(700.3)	(117.6)
Operating expenses	(27.3)	(11.5)	(47.4)	(14.7)
Gain (loss) on derivative activity	0	0	0	0
Segment profit	26	9.5	38.3	12.2
Depreciation and amortization	(14.5)	(10.5)	(26.9)	(12.2)
Goodwill	142.1	112.5	142.1	112.5	112.5
Capital expenditures	54.4	33.9	132	45
Identifiable assets	1,210.6		1,210.6		871.8
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Product sales	0	0	0	0
Product sales - affiliates	(36)	(21)	(56.5)	(25.7)
Midstream services	0	0	0	0
Midstream services-affiliates	0	0	0	0
Cost of sales	36	21	56.5	25.7
Operating expenses	0	0	0	0
Gain (loss) on derivative activity	1.2	(1.6)	1.4	(2.9)
Segment profit	1.2	(1.6)	1.4	(2.9)
Depreciation and amortization	(1.7)	(0.5)	(3.2)	(0.6)
Goodwill	0	0	0	0
Capital expenditures	2.5	$ 3.2	6.7	$ 8.7
Identifiable assets	$ 316		$ 316		$ 318

Segment Information (Reconcilia

Segment Information (Reconciliation of Segment Profit to Operating Income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting [Abstract]
Segment profit	$ 197.2	$ 191.4	$ 381.8	$ 328.9
General and administrative	(27)	(25.8)	(68.8)	(41.3)
Depreciation and amortization	(97.7)	(74.5)	(189)	(123)
Operating income	$ 72.5	$ 91.1	$ 124	$ 164.6

Discontinued Operations (Detail

Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Revenue, External				$ 6.8
Disposal Group, Including Discontinued Operation, Revenue, Related Party				10.5
Operating revenues				17.3
Operating expenses				15.7
Disposal Group, Including Discontinued Operation, Total				15.7
Income before income taxes				1.6
Income tax expense				0.6
Net income	$ 0	$ 0	$ 0	1
Net income including non-controlling interest	$ 0	$ 0	$ 0	$ 1
Gulf Coast Fractionators [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Equity Method Investment, Ownership Percentage	38.75%		38.75%		38.75%

Supplemental Cash Flow Inform77

Supplemental Cash Flow Information (Details) $ in Millions	6 Months Ended
	Jun. 30, 2015USD ($)
Other Significant Noncash Transactions [Line Items]
Other Significant Noncash Transaction, Value of Consideration Given	$ 180
Common Class C [Member]
Other Significant Noncash Transactions [Line Items]
Other Significant Noncash Transaction, Value of Consideration Given	180
Midstream Holdings [Member]
Other Significant Noncash Transactions [Line Items]
Other Significant Noncash Transaction, Value of Consideration Given	$ 66.5