Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Sep. 30, 2018	Nov. 01, 2018
Entity Information [Abstract]
Document Type	10-Q
Document Fiscal Period Focus	Q3
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2018
Amendment Flag	false
Entity Registrant Name	Enlink Midstream, LLC
Entity Central Index Key	0001592000
Entity Current Reporting Status	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		181,294,967

Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 64.8	$ 31.2
Accounts receivable:
Trade, net of allowance for bad debt of $0.3 and $0.3, respectively	198.0	50.1
Accrued revenue and other	817.2	576.6
Related party	0.7	102.8
Fair value of derivative assets	12.5	6.8
Natural gas and NGLs inventory, prepaid expenses, and other	155.1	41.2
Total current assets	1,248.3	808.7
Property and equipment, net of accumulated depreciation of $2,859.3 and $2,533.0, respectively	6,875.7	6,587.0
Intangible assets, net of accumulated amortization of $391.3 and $298.7, respectively	1,404.5	1,497.1
Goodwill	1,542.2	1,542.2
Investment in unconsolidated affiliates	84.5	89.4
Other assets, net	43.1	13.4
Total assets	11,198.3	10,537.8
Current liabilities:
Accounts payable and drafts payable	130.6	66.9
Accounts payable to related party	5.0	16.3
Accrued gas, NGLs, condensate, and crude oil purchases	656.9	476.1
Fair value of derivative liabilities	21.9	8.4
Installment payable, net of discount of $0.5 at December 31, 2017	0.0	249.5
Current maturities of long-term debt	500.9	0.0
Other current liabilities	261.4	222.9
Total current liabilities	1,576.7	1,040.1
Long-term debt	3,835.9	3,542.1
Asset retirement obligations	14.6	14.2
Other long-term liabilities	20.7	33.9
Deferred tax liability	361.8	346.2
Fair value of derivative liabilities	7.0	0.0
Redeemable non-controlling interest	6.2	4.6
Members’ equity:
Members’ equity (181,294,450 and 180,600,728 units issued and outstanding, respectively)	1,838.4	1,924.2
Accumulated other comprehensive loss	(2.0)	(2.0)
Non-controlling interest	3,539.0	3,634.5
Total members’ equity	5,375.4	5,556.7
Total liabilities and members’ equity	$ 11,198.3	$ 10,537.8

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
ASSETS
Allowance for bad debt	$ 0.3	$ 0.3
Property and equipment, accumulated depreciation	2,859.3	2,533.0
Intangible assets, accumulated amortization	391.3	298.7
Liabilities:
Current installment payable discount	$ 0.0	$ 0.5
Members’ equity:
Common units issued (in shares)	181,294,450	180,600,728
Common units outstanding (in shares)	181,294,450	180,600,728

Consolidated Statements of Operations - USD ($)
$ in Millions

3 Months Ended

9 Months Ended

Sep. 30, 2018

Sep. 30, 2017

Sep. 30, 2018

Sep. 30, 2017

Revenues:

Revenue from contracts with customers

$ 2,119.7

$ 5,660.8

Loss on derivative activity

(5.4)

$ (5.5)

(20.1)

$ (1.1)

Total revenues

2,114.3

1,397.9

5,640.7

3,983.4

Operating costs and expenses:

Cost of sales

^[1]

1,696.6

1,053.2

4,403.7

2,987.9

Operating expenses

114.7

102.1

337.3

308.8

General and administrative

41.9

31.3

99.8

98.5

Loss on disposition of assets

0.0

1.1

1.3

0.8

Depreciation and amortization

146.7

136.3

430.1

407.1

Impairments

24.6

1.8

24.6

8.8

Gain on litigation settlement

0.0

(26.0)

Total operating costs and expenses

2,024.5

1,325.8

5,296.8

3,785.9

Operating income

89.8

72.1

343.9

197.5

Other income (expense):

Interest expense, net of interest income

(45.2)

(49.6)

(134.3)

(142.2)

Gain on extinguishment of debt

0.0

9.0

Income from unconsolidated affiliates

4.3

4.4

11.7

5.0

Other income

0.1

0.3

0.5

Total other expense

(40.8)

(44.9)

(122.3)

(127.7)

Income before non-controlling interest and income taxes

49.0

27.2

221.6

69.8

Income tax provision

(4.0)

(3.1)

(17.3)

(9.3)

Net income

45.0

24.1

204.3

60.5

Net income attributable to non-controlling interest

37.3

17.9

156.2

50.3

Net income attributable to ENLC

$ 7.7

$ 6.2

$ 48.1

$ 10.2

Net income attributable to ENLC per unit:

Basic common unit (in dollars per share)

$ 0.04

$ 0.03

$ 0.27

$ 0.06

Diluted common unit (in dollars per share)

$ 0.04

$ 0.03

$ 0.26

$ 0.06

Product sales

Revenues:

Revenue from contracts with customers

$ 1,832.2

$ 1,056.7

$ 4,766.5

$ 2,973.9

Product sales—related parties

Revenues:

Revenue from contracts with customers

10.2

35.3

41.0

107.3

Midstream services

Revenues:

Revenue from contracts with customers

241.5

136.4

476.1

395.7

Midstream services-related parties

Revenues:

Revenue from contracts with customers

$ 35.8

$ 175.0

$ 377.2

$ 507.6

[1]	Includes related party cost of sales of $23.0 million and $47.3 million for the three months ended September 30, 2018 and 2017, respectively, and $103.8 million and $126.9 million for the nine months ended September 30, 2018 and 2017, respectively.

Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement [Abstract]
Related party cost of sales	$ 23.0	$ 47.3	$ 103.8	$ 126.9

Consolidated Statements of Comprehensive Income Statement - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 45.0	$ 24.1	$ 204.3	$ 60.5
Loss on designated cash flow hedge, net of tax benefit of $0.2 million for the nine months ended September 30, 2017	0.0	0.0	0.0	(2.0)
Comprehensive income	45.0	24.1	204.3	58.5
Comprehensive income attributable to non-controlling interest	37.3	17.9	156.2	48.7
Comprehensive income attributable to EnLink Midstream, LLC	$ 7.7	$ 6.2	$ 48.1	$ 9.8

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Loss on designated cash flow hedge, tax benefit	$ 0.0	$ 0.0	$ 0.0	$ 0.2

Consolidated Statement of Changes in Members' Equity - 9 months ended Sep. 30, 2018 - USD ($) $ in Millions	Total	Common Units	Accumulated Other Comprehensive Loss	Non-Controlling Interest	Redeemable Non-Controlling Interest (Temporary Equity)
Member equity, beginning balance at Dec. 31, 2017	$ 5,556.7	$ 1,924.2	$ (2.0)	$ 3,634.5
Units outstanding, beginning balance (in shares) at Dec. 31, 2017	180,600,728	180,600,000
Increase (Decrease) in Members' Equity
Issuance of common units by ENLK	$ 46.1			46.1
Conversion of restricted units for common units, net of units withheld for taxes	(5.7)	$ (5.7)
Conversion of restricted units for common units, net of units withheld for taxes (in shares)		700,000
Non-controlling interest’s impact of conversion of restricted units	(5.6)			(5.6)
Unit-based compensation	32.3	$ 15.9		16.4
Change in equity due to issuance of units by ENLK	(0.2)	1.2		(1.4)
Contributions from non-controlling interests	73.4			73.4
Distributions	(524.3)	(145.0)		(379.3)
Fair value adjustment related to redeemable non-controlling interest	(1.4)	(0.3)		(1.1)	$ 1.4
Net income	204.1	48.1		156.0	0.2
Member equity, end balance at Sep. 30, 2018	$ 5,375.4	$ 1,838.4	$ (2.0)	3,539.0
Units outstanding, end balance (in shares) at Sep. 30, 2018	181,294,450	181,300,000
Redeemable noncontrolling interest, beginning balance at Dec. 31, 2017					4.6
Increase (Decrease) in Temporary Equity
Fair value adjustment related to redeemable non-controlling interest	$ (1.4)	$ (0.3)		(1.1)	1.4
Net income	$ 204.1	$ 48.1		$ 156.0	0.2
Redeemable noncontrolling interest, ending balance at Sep. 30, 2018					$ 6.2

Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities:
Net income	$ 204.3	$ 60.5
Adjustments to reconcile net income to net cash provided by operating activities:
Impairments	24.6	8.8
Depreciation and amortization	430.1	407.1
Non-cash unit-based compensation	31.8	38.9
Loss on derivatives recognized in net income	20.1	1.1
Gain on extinguishment of debt	0.0	(9.0)
Cash settlements on derivatives	(4.3)	(5.9)
Amortization of debt issue costs, net discount (premium) of notes and installment payable	3.4	21.8
Distribution of earnings from unconsolidated affiliates	14.0	4.1
Income from unconsolidated affiliates	(11.7)	(5.0)
Non-cash revenue from contract restructuring	(45.5)	0.0
Other operating activities	15.0	9.3
Changes in assets and liabilities, net of assets acquired and liabilities assumed:
Accounts receivable, accrued revenue, and other	(292.2)	(56.7)
Natural gas and NGLs inventory, prepaid expenses, and other	(93.0)	(48.4)
Accounts payable, accrued gas and crude oil purchases, and other accrued liabilities	242.4	101.8
Net cash provided by operating activities	539.0	528.4
Cash flows from investing activities:
Additions to property and equipment	(639.4)	(662.5)
Proceeds from sale of unconsolidated affiliate investment	0.0	189.7
Investment in unconsolidated affiliates	(0.1)	(11.8)
Distribution from unconsolidated affiliates in excess of earnings	2.7	7.3
Other investing activities	3.8	2.0
Net cash used in investing activities	(633.0)	(475.3)
Cash flows from financing activities:
Proceeds from borrowings	2,011.8	2,213.4
Payments on borrowings	(1,220.0)	(1,955.6)
Payment of installment payable for EOGP acquisition	(250.0)	(250.0)
Debt financing costs	0.0	(5.5)
Conversion of restricted units, net of units withheld for taxes	(5.7)	(5.0)
Conversion of ENLK's restricted units, net of units withheld for taxes	(5.6)	(5.2)
Proceeds from issuance of ENLK common units	46.1	92.3
Distribution to members	(145.0)	(139.5)
Distributions to non-controlling interests	(379.3)	(306.9)
Proceeds from issuance of ENLK Series C Preferred Units	0.0	393.7
Contributions by non-controlling interests	73.4	46.2
Other financing activities	1.9	(0.8)
Net cash provided by financing activities	127.6	77.1
Net increase in cash and cash equivalents	33.6	130.2
Cash and cash equivalents, beginning of period	31.2	11.7
Cash and cash equivalents, end of period	64.8	141.9
Supplemental disclosures of cash flow information:
Cash paid for interest	108.8	94.7
Cash paid for income taxes	0.6	4.1
Non-cash investing activities:
Non-cash accrual of property and equipment	13.3	(26.2)
Discounted secured term loan receivable from contract restructuring	$ 47.7	$ 0.0

General

9 Months Ended

Sep. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

General

(1) General

In this report, the terms “Company” or “Registrant,” as well as the terms “ENLC,” “our,” “we,” “us,” or like terms, are sometimes used as abbreviated references to EnLink Midstream, LLC itself or EnLink Midstream, LLC together with its consolidated subsidiaries, including ENLK and its consolidated subsidiaries. References in this report to “EnLink Midstream Partners, LP,” the “Partnership,” “ENLK,” or like terms refer to EnLink Midstream Partners, LP itself or EnLink Midstream Partners, LP together with its consolidated subsidiaries, including the Operating Partnership and EOGP.

Please read the notes to the consolidated financial statements in conjunction with the Definitions page set forth in this report prior to Part I—Financial Information.


(a)	Organization of Business

EnLink Midstream, LLC is a publicly traded Delaware limited liability company formed in October 2013. The Company’s common units are traded on the New York Stock Exchange under the symbol “ENLC.”

Our assets consist of equity interests in ENLK and EOGP. ENLK is a publicly traded limited partnership formed on July 12, 2002 and is engaged in the gathering, transmission, processing, and marketing of natural gas, NGLs, condensate, and crude oil, as well as providing crude oil, condensate, and brine services to producers. EOGP is a partnership held by us and ENLK and is engaged in the gathering and processing of natural gas. As of September 30, 2018, our direct and indirect interests in ENLK and EOGP consisted of the following:


•	88,528,451 common units representing an aggregate 21.4% limited partner interest in ENLK;


•	100% ownership interest in the General Partner of ENLK, which owns a 0.4% general partner interest and all of the incentive distribution rights in ENLK; and


•	16.1% limited partner interest in EOGP

On July 18, 2018, subsidiaries of Devon closed a transaction to sell all of their equity interests in ENLK, ENLC, and the managing member of ENLC to GIP. As a result of the transaction:

•

GIP, through GIP Stetson I, L.P., acquired all of the equity interests held by subsidiaries of Devon in ENLK and the managing member of ENLC, which amount to 100% of the outstanding limited liability company interests in the managing member of ENLC and approximately 23.1% of the outstanding limited partner interests in ENLK at the closing date. Through this transaction, GIP acquired control of (i) the managing member of ENLC, (ii) ENLC, and (iii) ENLK, as a result of ENLC’s indirect ownership of ENLK’s general partner; and


•	GIP, through GIP Stetson II, L.P., acquired all of the equity interests held by subsidiaries of Devon in ENLC, which amount to approximately 63.8% of the outstanding limited liability company interests in ENLC at the closing date.

On October 21, 2018, ENLC, ENLK, the General Partner, the managing member of ENLC, and NOLA Merger Sub, LLC, a wholly-owned subsidiary of ENLC (“NOLA Merger Sub”), entered into a definitive agreement and plan of merger (the “Merger Agreement”) pursuant to which, subject to the satisfaction or waiver of certain conditions in the Merger Agreement, NOLA Merger Sub will merge with and into ENLK (the “Merger”), with ENLK continuing as the surviving entity and a subsidiary of ENLC. The Merger and the other transactions contemplated by the Merger Agreement and the preferred restructuring agreement entered into concurrently with the Merger Agreement (the “Merger Transactions”) are expected to close in the first quarter of 2019, subject to obtaining ENLK unitholder approval, customary regulatory approvals, and other customary closing conditions. See Note 15—Subsequent Event for more information regarding this transaction.


(b)	Nature of Business

We primarily focus on providing midstream energy services, including:


•	gathering, compressing, treating, processing, transporting, storing, and selling natural gas;


•	fractionating, transporting, storing, and selling NGLs; and


•	gathering, transporting, stabilizing, storing, trans-loading, and selling crude oil and condensate, in addition to brine disposal services.

Our natural gas business includes connecting the wells of producers in our market areas to our gathering systems. Our gathering systems consist of networks of pipelines that collect natural gas from points at or near producing wells and transport it to our processing plants or to larger pipelines for further transmission. We operate processing plants that remove NGLs from the natural gas stream that is transported to the processing plants by our own gathering systems or by third-party pipelines. In conjunction with our gathering and processing business, we may purchase natural gas and NGLs from producers and other supply sources and sell that natural gas or NGLs to utilities, industrial consumers, marketers, and pipelines. Our transmission pipelines 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.

Our fractionators separate NGLs into separate purity products, including ethane, propane, iso-butane, normal butane, and natural gasoline. Our fractionators receive NGLs primarily through our transmission lines that transport NGLs from East Texas and from our South Louisiana processing plants. Our fractionators also have the capability to receive NGLs by truck or rail terminals. We also have agreements pursuant to which third parties transport NGLs from our West Texas and Central Oklahoma operations to our NGL transmission lines that then transport the NGLs to our fractionators. In addition, we have NGL storage capacity to provide storage for customers.

Our crude oil and condensate business includes the gathering and transmission of crude oil and condensate via pipelines, barges, rail, and trucks, in addition to condensate stabilization and brine disposal. We also purchase crude oil and condensate from producers and other supply sources and sell that crude oil and condensate through our terminal facilities to various markets.

Across our businesses, we primarily earn our fees through various fee-based contractual arrangements, which include stated fee-only contract arrangements or arrangements with fee-based components where we purchase and resell commodities in connection with providing the related service and earn a net margin as our fee. We earn our net margin under our purchase and resell contract arrangements primarily as a result of stated service-related fees that are deducted from the price of the commodities purchased. While our transactions vary in form, the essential element of most of our transactions is the use of our assets to transport a product or provide a processed product to an end-user or marketer at the tailgate of the plant, pipeline, or barge, truck, or rail terminal.

Significant Accounting Policies

9 Months Ended

Sep. 30, 2018

Accounting Policies [Abstract]

Significant Accounting Policies

(2) Significant Accounting Policies


(a)	Basis of Presentation

The accompanying 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 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.


(b)	Revenue Recognition

We generate the majority of our revenues from midstream energy services, including gathering, transmission, processing, fractionation, storage, condensate stabilization, brine services, and marketing, through various contractual arrangements, which include fee-based contract arrangements or arrangements where we purchase and resell commodities in connection with providing the related service and earn a net margin for our fee. While our transactions vary in form, the essential element of most of our transactions is the use of our assets to transport a product or provide a processed product to an end-user or marketer at the tailgate of the plant, pipeline, or barge, truck, or rail terminal. Revenues from both “Product sales” and “Midstream services” represent revenues from contracts with customers and are reflected on the 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 our midstream services as outlined above.


•	Midstream services—Midstream services represent all other revenue generated as a result of performing our midstream services as outlined above.

Adoption of ASC 606

Effective January 1, 2018, we adopted ASC 606 using the modified retrospective method. ASC 606 replaces previous revenue recognition requirements in GAAP and requires entities to recognize revenue at an amount that reflects the consideration to which they expect to be entitled in exchange for transferring goods or services to a customer. ASC 606 also requires significantly expanded disclosures containing qualitative and quantitative information regarding the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers.

Evaluation of Our Contractual Performance Obligations

In adopting ASC 606, we evaluated our contracts with customers that are within the scope of ASC 606. In accordance with the new revenue recognition framework introduced by ASC 606, we identified our performance obligations under our contracts with customers. These performance obligations include:


•	promises to perform midstream services for our customers over a specified contractual term and/or for a specified volume of commodities; and


•	promises to sell a specified volume of commodities to our customers.

The identification of performance obligations under our contracts requires a contract-by-contract evaluation of when control, including the economic benefit, of commodities transfers to and from us (if at all). This evaluation of control changed the way we account for certain transactions effective January 1, 2018, specifically those contracts in which there is both a commodity purchase and a midstream service. For contracts where control of commodities transfers to us before we perform our services, we generally have no performance obligation for our services, and accordingly, we do not consider these revenue-generating contracts for purposes of ASC 606. Based on the control determination, all contractually-stated fees that are deducted from our payments to producers or other suppliers for commodities purchased are reflected as a reduction in the cost of such commodity purchases. Alternatively, for contracts where control of commodities transfers to us after we perform our services, we consider these contracts to contain performance obligations for our services. Accordingly, we consider the satisfaction of these performance obligations as revenue-generating and recognize the fees received for satisfying them as midstream services revenues over time as we satisfy our performance obligations. For contracts where control of commodities never transfers to us and we simply earn a fee for our services, we recognize these fees as midstream services revenues over time as we satisfy our performance obligations.

We also evaluate our contractual arrangements that contain a purchase and sale of commodities under the principal/agent provisions in ASC 606. For contracts where we possess control of the commodity and act as principal in the purchase and sale, we record product sales revenue at the price at which the commodities are sold, with a corresponding cost of sales equal to the cost of the commodities when purchased. For contracts in which we do not possess control of the commodity and are acting as an agent, our consolidated statements of operations only reflect midstream services revenues that we earn based on the fees contained in the applicable contract.

Based on our review of our performance obligations in our contracts with customers, we changed the consolidated statement of operations classification for certain transactions from revenue to cost of sales or from cost of sales to revenue. For the three and nine months ended September 30, 2018, the reclassification of revenues and cost of sales resulted in a net decrease in revenue of approximately $179 million and $480 million, respectively, or 8% and 8%, respectively, compared to total revenues based on accounting prior to the adoption of ASC 606, with an equivalent net decrease in cost of sales. The change in total revenues as a result of the adoption of ASC 606 is made up of the following revenue line item changes (in millions):



	Increase (Decrease) in Revenue Due to ASC 606 Adoption
	Three Months Ended September 30, 2018			Nine Months Ended September 30, 2018
Product sales	$	(71	)	$	(149	)
Product sales—related parties	(7		)	(53		)
Midstream services	(98		)	(251		)
Midstream services—related parties	(3		)	(27		)
Total	$	(179	)	$	(480	)

This change in accounting treatment had no impact on our operating income, net income, results of operations, financial condition, or cash flows.

Changes in Accounting Methodology for Certain Contracts

For NGL contracts in which we purchase raw mix NGLs and subsequently transport, fractionate, and market the NGLs, we accounted for these contracts prior to the adoption of ASC 606 as revenue-generating contracts in which the fees we earned for our services were recorded as midstream services revenue on the consolidated statements of operations. As a result of the adoption of ASC 606, we determined that the control, including the economic benefit, of commodities has passed to us once the raw mix NGLs have been purchased from the customer. Therefore, we now consider the contractually-stated fees to serve as pricing mechanisms that reduce the cost of such commodity purchased upon receipt of the raw mix NGLs, rather than being recorded as midstream services revenue. Upon sale of the NGLs to a third-party customer, we record product sales revenue at the price at which the commodities are sold, with a corresponding cost of sales equal to the cost of the commodities purchased.

For our crude oil and condensate service contracts in which we purchase the commodity, we utilize a similar approach under ASC 606 as outlined above for NGL contracts. This treatment is consistent with our accounting for crude oil and condensate service contracts prior to the adoption of ASC 606.

For our natural gas gathering and processing contracts in which we perform midstream services and also purchase the natural gas, we accounted for these contracts prior to the adoption of ASC 606 as revenue-generating contracts in which all contractually-stated fees earned for our gathering and processing services were recorded as midstream services revenue on the statements of operations. As a result of the adoption of ASC 606, we must determine if economic control of the commodities has passed from the producer to us before or after we perform our services (if at all). Control is assessed on a contract-by-contract basis by analyzing each contract’s provisions, which can include provisions for: the customer to take its residue gas and/or NGLs in-kind; fixed or actual NGL or keep-whole recovery; commodity purchase prices at weighted average sales price or market index-based pricing; and various other contract-specific considerations. Based on this control assessment, our gathering and processing contracts fall into two primary categories:

•

For gathering and processing contracts in which there is a commodity purchase and analysis of the contract provisions indicates that control, including the economic benefit, of the natural gas passes to us when the natural gas is brought into our system, we do not consider these contracts to contain performance obligations for our services. As control of the natural gas passes to us prior to performing our gathering and processing services, we are, in effect, performing our services for our own benefit. Based on this control determination, we consider the contractually-stated fees to serve as pricing mechanisms that reduce the cost of such commodity purchased upon receipt of the natural gas, rather than being recorded as midstream services revenue. Upon sale of the residue gas and/or NGLs to a third-party customer, we record product sales revenue at the price at which the commodities are sold, with a corresponding cost of sales equal to the cost of the commodities purchased.

•

For gathering and processing contracts in which there is a commodity purchase and analysis of the contract provisions indicates that control, including the economic benefit, of the natural gas does not pass to us until after the natural gas has been gathered and processed, we consider these contracts to contain performance obligations for our services. Accordingly, we consider the satisfaction of these performance obligations as revenue-generating, and we recognize the fees received for satisfying these performance obligations as midstream services revenues over time as we satisfy our performance obligations.

For midstream service contracts related to NGL, crude oil, or natural gas gathering and processing in which there is no commodity purchase or control of the commodity never passes to us and we simply earn a fee for our services, we consider these contracts to contain performance obligations for our services. Accordingly, we consider the satisfaction of these performance obligations as revenue-generating, and we recognize the fees received for satisfying these performance obligations as midstream services revenue over time as we satisfy our performance obligations. This treatment is consistent with our accounting for these contracts prior to the adoption of ASC 606.

For our natural gas transmission contracts, we determined that control of the natural gas never transfers to us and we simply earn a fee for our services. Therefore, we recognize these fees as midstream services revenue over time as we satisfy our performance obligations. This treatment is consistent with our accounting for natural gas transmission contracts prior to the adoption of ASC 606.

We also evaluate our commodity marketing contracts, under which we purchase and sell commodities in connection with our gas, NGL, and crude and condensate midstream services, pursuant to ASC 606, including the principal/agent provisions. For contracts in which we possess control of the commodity and act as principal in the purchase and sale of commodities, we record product sales revenue at the price at which the commodities are sold, with a corresponding cost of sales equal to the cost of the commodities when purchased. For contracts in which we do not possess control of the commodity and are acting as agent, our consolidated statements of operations only reflect midstream services revenues that we earn based on the fees contained in the applicable contract. This treatment is consistent with our accounting for our commodity marketing contracts prior to the adoption of ASC 606.

Satisfaction of Performance Obligations and Recognition of Revenue

While ASC 606 alters the line item on which certain amounts are recorded on the consolidated statements of operations, ASC 606 did not significantly affect the timing of income and expense recognition on the consolidated statements of operations. Specifically, for our commodity sales contracts, we satisfy our performance obligations at the point in time at which the commodity transfers from us to the customer. This transfer pattern aligns with our billing methodology. Therefore, we recognize product sales revenue at the time the commodity is delivered and in the amount to which we have the right to invoice the customer, which is consistent with our accounting prior to the adoption of ASC 606. For our midstream service contracts that contain revenue-generating performance obligations, we satisfy our performance obligations over time as we perform the midstream service and as the customer receives the benefit of these services over the term of the contract. As permitted by ASC 606, we are utilizing the practical expedient that allows an entity to recognize revenue in the amount to which the entity has a right to invoice, since we have a right to consideration from our customer in an amount that corresponds directly with the value to the customer of our performance completed to date. Accordingly, we continue to recognize revenue over time as our midstream services are performed. Therefore, ASC 606 does not significantly affect the timing of revenue and expense recognition on our consolidated statements of operations, and no cumulative effect adjustment was made to the balance of equity upon our adoption of ASC 606.

We generally accrue one month of sales and the related natural gas, NGL, condensate, and crude oil purchases and reverse these accruals when the sales and purchases are invoiced and recorded in the subsequent month. Actual results could differ from the accrual estimates. We typically receive payment for invoiced amounts within one month, depending on the terms of the contract. We account for taxes collected from customers attributable to revenue transactions and remitted to government authorities on a net basis (excluded from revenues).

Minimum Volume Commitments and Firm Transportation Contracts

Certain gathering and processing agreements in our Texas, Oklahoma, and Crude and Condensate segments provide for quarterly or annual MVCs, including MVCs from Devon from certain of our Barnett Shale assets in North Texas and our Cana gathering and processing assets in Oklahoma. Under these agreements, our customers or suppliers (as “customers” and “suppliers” are determined per application of ASC 606) agree to ship and/or process a minimum volume of product on our systems over an agreed time period. If a customer or supplier under such an agreement fails to meet its MVC for a specified period, the customer is obligated to pay a contractually-determined fee based upon the shortfall between actual product volumes and the MVC for that period. Some of these agreements also contain make-up right provisions that allow a customer or supplier to utilize gathering or processing fees in excess of the MVC in subsequent periods to offset shortfall amounts in previous periods. We record revenue under MVC contracts during periods of shortfall when it is known that the customer cannot, or will not, make up the deficiency in subsequent periods. Deficiency fee revenue is included in midstream services revenue.

For our firm transportation contracts, we transport commodities owned by others for a stated monthly fee for a specified monthly quantity with an additional fee based on actual volumes. We include transportation fees from firm transportation contracts in our midstream services revenue.

The following table summarizes the expected impact to our consolidated statements of operations, resulting from either revenue or reductions to cost of sales, from MVC and firm transportation contractual provisions. All amounts in the table below reflect the contractually-stated MVC or firm transportation volumes specified for each period multiplied by the relevant deficiency or reservation fee. Actual amounts could differ due to the timing of revenue recognition or reductions to cost of sales resulting from make-up right provisions included in our agreements, as well as due to nonpayment or nonperformance by our customers. In addition, amounts in the table below do not represent the shortfall amounts we expect to collect under our MVC contracts as we generally do not expect volume shortfalls to equal the full amount of the contractual MVCs during these periods.



2018 (remaining)	$	190.9
2019	237.1
2020	225.7
2021	82.3
2022	71.9
Thereafter	231.2
Total	$	1,039.1

In May 2018, we restructured one of our natural gas gathering and processing contracts that included MVCs that were in effect through 2023. Prior to the contract restructuring, we expected $135.1 million in guaranteed future gross operating margin under the contract, generated from either revenue or reductions to cost of sales resulting from both gathering and processing fees as well as shortfall revenue under the MVCs. As a result of the contract restructuring, all MVC provisions were removed from the contract, and we and the counterparty entered into additional agreements pursuant to which: (i) the counterparty made a $19.7 million payment to us on the date of the contract restructuring to satisfy MVC revenue earned up to the date of the contract restructuring; (ii) the counterparty entered into a second lien secured term loan under which the counterparty will pay us $58.0 million in principal payments in various installments ending in May 2023, with interest accruing on the loan balance at 8.0% per annum beginning in 2020; and (iii) the counterparty granted to us a 1.0% term overriding royalty interest through June 2034 in each well located on leasehold interests of the counterparty and connected to the gas gathering system that we operate. As a result of the contract restructuring and in accordance with ASC 606, we recognized $45.5 million of midstream services revenue, which primarily represents the discounted present value of the second lien secured term loan receivable, in the Oklahoma segment in the second quarter of 2018. Pursuant to the contract restructuring, the terms of the restructured contract, other than the MVCs, are the same as the original contract, and we expect to continue recognizing gathering and processing fees on volumes delivered by the customer.

Contributions in Aid of Construction

The adoption of ASC 606 also alters how we account for contributions in aid of construction (“CIAC”). CIAC payments are lump sum payments from third parties to reimburse us for capital expenditures related to the construction of our operating assets and, in most cases, the connection of these operating assets to the third party’s assets. CIAC payments can be paid to us prior to the commencement of construction activities, during construction, or after construction has been completed. Prior to adoption of ASC 606 and in accordance with ASC 980, Regulated Operations (“ASC 980”), and the FERC Uniform System of Accounts, we reduced the balance of the related property and equipment by the amount of CIAC payments received. In doing so, CIAC payments previously affected the consolidated statements of operations through reduced depreciation expense over the useful lives of the related property and equipment. Upon adoption of ASC 606, we initially recognize CIAC payments received from customers as deferred revenue, which will be subsequently amortized into revenue over the term of the underlying operational contract. For CIAC payments from noncustomers and for payments related to the construction of regulated operating assets, we continue to reduce the balance of the related property and equipment in accordance with ASC 980 and the FERC Uniform System of Accounts. This change in our CIAC accounting policy was not material to our financial statements for the three and nine months ended September 30, 2018.

Disaggregation of Revenue and Presentation of Prior Periods

Based on the disclosure requirements of ASC 606, we are presenting revenues disaggregated based on the type of good or service in order to more fully depict the nature of our revenues. See Note 13—Segment Information for the revenue disaggregation information included in the segment information table for the three and nine months ended September 30, 2018. As we adopted ASC 606 using the modified retrospective method, only the consolidated statement of operations and revenue disaggregation information for the three and nine months ended September 30, 2018 are presented to conform to ASC 606 accounting and disclosure requirements. Prior periods presented in the consolidated financial statements and accompanying notes were not restated in accordance with ASC 606.


(c)	Accounting Standards to be Adopted in Future Periods

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842)—Amendments to the FASB Accounting Standards Codification (“ASU 2016-02”), which establishes ASC Topic 842, Leases (“ASC 842”). Under ASC 842, lessees will need to recognize virtually all of their leases on the balance sheet by recording a right-of-use asset and lease liability. Lessor accounting is similar to the current model but updated to align with certain changes to the lessee model and the new revenue recognition standard. Existing sale-leaseback guidance is replaced with a new model applicable to both lessees and lessors. Additional revisions have been made to embedded leases, reassessment requirements, and lease term assessments including variable lease payment, discount rate, and lease incentives. ASC 842 is effective for annual reporting periods beginning after December 15, 2018, including interim periods within those annual periods. We will adopt ASC 842 effective January 1, 2019. We are currently assessing the impact of adopting ASC 842 and are in the process of implementing a lease accounting software tool. This assessment includes the evaluation of our current lease contracts and the analysis of contracts that may contain lease components. We are electing to apply certain practical expedients that are allowed in the adoption of ASC 842, including not reassessing existing contracts for lease arrangements, not reassessing existing lease classification, not recording a right-of-use asset or lease liability for leases of twelve months or less, and not separating lease and non-lease components of a lease arrangement. While we are still evaluating the complete population of lease contracts, we believe the adoption of ASC 842 will increase our asset and liability balances on the consolidated balance sheets by less than $100 million due to the required recognition of right-of-use assets and corresponding lease liabilities for all lease obligations that are currently classified as operating leases.

In January 2018, the FASB issued ASU 2018-01, Leases (Topic 842)—Land Easement Practical Expedient for Transition to Topic 842 (“ASU 2018-01”). ASU 2018-01 amends ASC 842 and provides an optional practical expedient to not evaluate under ASC 842 existing or expired land easements that were not previously accounted for as leases under the current leases guidance in ASC 840, Leases. Under ASU 2018-01, an entity that elects this practical expedient should evaluate new or modified land easements under ASC 842 beginning at the date that the entity adopts ASC 842. We plan to utilize the practical expedient provided in ASU 2018-01 in conjunction with our adoption of ASC 842.

In July 2018, the FASB issued ASU 2018-11, Leases (Topic 842)—Targeted Improvements (“ASU 2018-11”). ASU 2018-11 amends ASC 842 and allows entities to adopt the new leases standard using a modified retrospective approach. Under this new transition method, entities initially apply the new leases standard at the adoption date and recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. Additionally, an entity’s reporting for the comparative periods presented in the financial statements in which it adopts the new leases standard will continue to be in accordance with current GAAP. We plan to utilize the optional transition method provided in ASU 2018-11 in conjunction with our adoption of ASC 842 in January 2019.

(d) Property & Equipment

Impairment Review. In accordance with ASC 360, Property, Plant and Equipment, we evaluate long-lived assets of identifiable business activities for potential impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. The carrying amount of a long-lived asset is not recoverable when it exceeds the undiscounted sum of the future cash flows expected to result from the use and eventual disposition of the asset. Estimates of expected future cash flows represent management’s best estimate based on reasonable and supportable assumptions. When the carrying amount of a long-lived asset is not recoverable, an impairment loss is recognized equal to the excess of the asset’s carrying value over its fair value. For the three and nine months ended September 30, 2018, we recognized impairments of property and equipment of $24.6 million related to certain non-core pipeline assets, because the carrying values were no longer recoverable. For the three and nine months ended September 30, 2017, we recognized impairments of property and equipment of $1.8 million and $8.8 million, respectively, which related to the carrying values of rights-of-way that we are no longer using and an abandoned brine disposal well.

Intangible Assets

9 Months Ended

Sep. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

(3) 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 5 to 20 years.

The following table represents our change in carrying value of intangible assets (in millions):



	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Nine Months Ended September 30, 2018
Customer relationships, beginning of period	$	1,795.8	$	(298.7	)	$	1,497.1
Amortization expense	—		(92.6		)	(92.6		)
Customer relationships, end of period	$	1,795.8	$	(391.3	)	$	1,404.5

The weighted average amortization period is 15.0 years. Amortization expense was $30.9 million and $31.2 million for the three months ended September 30, 2018 and 2017, respectively, and $92.6 million and $96.2 million for the nine months ended September 30, 2018 and 2017, respectively.

The following table summarizes our estimated aggregate amortization expense for the next five years and thereafter (in millions):



2018 (remaining)	$	30.9
2019	123.7
2020	123.7
2021	123.7
2022	123.7
Thereafter	878.8
Total	$	1,404.5

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Related Party Transactions	9 Months Ended
Related Party Transactions	Sep. 30, 2018
Related Party Transactions [Abstract]
Related Party Transactions	(4) Related Party Transactions On July 18, 2018, subsidiaries of Devon sold all of their equity interests in ENLK, ENLC, and the managing member of ENLC to GIP. Accordingly, Devon is no longer an affiliate of ENLK or ENLC. The sale did not affect our commercial arrangements with Devon, except that Devon agreed to extend through 2029 certain existing fixed-fee gathering and processing contracts related to the Bridgeport plant in North Texas and the Cana plant in Oklahoma. See Note 1—General for additional information regarding the GIP Transaction. Prior to July 18, 2018, revenues from transactions with Devon are included in “Product sales—related parties” or “Midstream services—related parties” in the consolidated statement of operations. Revenues from transactions with Devon after July 18, 2018 are included in “Product sales” or “Midstream services” in the consolidated statement of operations. From July 1, 2018 to July 18, 2018 and January 1, 2018 to July 18, 2018, Devon accounted for 2.0% and 7.3% of our revenues, respectively, and for the three and nine months ended September 30, 2017, Devon accounted for 15.0% and 15.4% of our revenues, respectively. We had an accounts receivable balance related to transactions with Devon of $102.7 million at December 31, 2017. Additionally, we had an accounts payable balance related to transactions with Devon of $16.3 million at December 31, 2017. For the three and nine months ended September 30, 2018, we recorded cost of sales of $11.3 million and $33.8 million, respectively, and for the three and nine months ended September 30, 2017, we recorded cost of sales of $9.5 million and $15.0 million, respectively, related to our purchase of residue gas and NGLs from the Cedar Cove JV subsequent to processing at our Central Oklahoma processing facilities. We had an accounts receivable balance related to transactions with the Cedar Cove JV of $0.7 million at September 30, 2018. Additionally, we had an accounts payable balance related to transactions with the Cedar Cove JV of $5.0 million at September 30, 2018. The accounts receivable and payable balances related to transactions with the Cedar Cove JV were immaterial at December 31, 2017. Management believes these transactions are executed on terms that are fair and reasonable to us. The amounts related to related party transactions are specified in the accompanying consolidated financial statements.

Long-Term Debt

9 Months Ended

Sep. 30, 2018

Debt Disclosure [Abstract]

Long-Term Debt

(5) Long-Term Debt

As of September 30, 2018 and December 31, 2017, long-term debt consisted of the following (in millions):



	September 30, 2018								December 31, 2017
	Outstanding Principal		Premium (Discount)			Long-Term Debt			Outstanding Principal		Premium (Discount)			Long-Term Debt
ENLK credit facility due 2020 (1)	$	765.0	$	—		$	765.0		$	—	$	—		$	—
ENLC credit facility due 2019 (2)	101.4		—			101.4			74.6		—			74.6
ENLK’s 2.70% Senior unsecured notes due 2019	400.0		(0.1		)	399.9			400.0		(0.1		)	399.9
ENLK’s 4.40% Senior unsecured notes due 2024	550.0		1.9			551.9			550.0		2.2			552.2
ENLK’s 4.15% Senior unsecured notes due 2025	750.0		(0.9		)	749.1			750.0		(1.0		)	749.0
ENLK’s 4.85% Senior unsecured notes due 2026	500.0		(0.5		)	499.5			500.0		(0.6		)	499.4
ENLK’s 5.60% Senior unsecured notes due 2044	350.0		(0.2		)	349.8			350.0		(0.2		)	349.8
ENLK’s 5.05% Senior unsecured notes due 2045	450.0		(6.2		)	443.8			450.0		(6.5		)	443.5
ENLK's 5.45% Senior unsecured notes due 2047	500.0		(0.1		)	499.9			500.0		(0.1		)	499.9
Debt classified as long-term, including current maturities of long-term debt	$	4,366.4	$	(6.1	)	4,360.3			$	3,574.6	$	(6.3	)	3,568.3
Debt issuance cost (3)						(23.5		)						(26.2		)
Less: Current maturities of long-term debt (4)						(500.9		)						—
Long-term debt, net of unamortized issuance cost						$	3,835.9							$	3,542.1


(1)	Bears interest based on Prime and/or LIBOR plus an applicable margin. The effective interest rate was 4.1% at September 30, 2018.


(2)	Bears interest based on Prime and/or LIBOR plus an applicable margin. The effective interest rate was 4.1% and 3.2% at September 30, 2018 and December 31, 2017, respectively.


(3)	Net of amortization of $15.7 million and $12.9 million at September 30, 2018 and December 31, 2017, respectively.


(4)	The outstanding balance, net of debt issuance costs, of the ENLC Credit Facility and ENLK’s 2.70% senior unsecured notes as of September 30, 2018 are classified as “Current maturities of long-term debt” on the consolidated balance sheet as the ENLC Credit Facility matures on March 7, 2019, and ENLK’s 2.70% senior unsecured notes mature on April 1, 2019.

ENLC Credit Facility

The ENLC Credit Facility is a $250.0 million revolving credit facility that matures on March 7, 2019 and includes a $125.0 million letter of credit subfacility. Our obligations under the ENLC Credit Facility are guaranteed by two of our wholly-owned subsidiaries and secured by first priority liens on (i) 88,528,451 ENLK common units and the 100% membership interest in the General Partner indirectly held by us, (ii) the 100% equity interest in each of our wholly-owned subsidiaries held by us, and (iii) any additional equity interests subsequently pledged as collateral under the ENLC Credit Facility.

The ENLC Credit Facility contains certain financial, operational, and legal covenants. The financial covenants are tested on a quarterly basis, based on the rolling four-quarter period that ends on the last day of each fiscal quarter, and include (i) maintaining a maximum consolidated leverage ratio (as defined in the ENLC Credit Facility, but generally computed as the ratio of consolidated funded indebtedness to consolidated earnings before interest, taxes, depreciation, amortization, and certain other non-cash charges) of 4.00 to 1.00, provided that the maximum consolidated leverage ratio is 4.50 to 1.00 during an acquisition period (as defined in the ENLC Credit Facility) and (ii) maintaining a minimum consolidated interest coverage ratio (as defined in the ENLC Credit Facility, but generally computed as the ratio of consolidated earnings before interest, taxes, depreciation, amortization, and certain other non-cash charges to consolidated interest charges) of 2.50 to 1.00 unless an investment grade event (as defined in the ENLC Credit Facility) occurs.

Borrowings under the ENLC Credit Facility bear interest at our option at the Eurodollar Rate (the LIBOR Rate) plus an applicable margin (ranging from 1.75% to 2.50%) 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 (ranging from 0.75% to 1.50%). The applicable margins vary depending on our leverage ratio. Upon breach by us of certain covenants governing the ENLC Credit Facility, amounts outstanding under the ENLC Credit Facility, if any, may become due and payable immediately and the liens securing the ENLC Credit Facility could be foreclosed upon.

On June 20, 2018, we amended the change of control provisions of the ENLC Credit Facility to, among other things, designate GIP as Qualifying Owners (as defined in the ENLC Credit Facility). At September 30, 2018, ENLC was in compliance and expects to be in compliance with the covenants in the ENLC Credit Facility through its maturity date.

As of September 30, 2018, there were no outstanding letters of credit and $101.4 million in outstanding borrowings under the ENLC Credit Facility, leaving approximately $148.6 million available for future borrowing.

ENLK Credit Facility

The ENLK Credit Facility is a $1.5 billion unsecured revolving credit facility that matures on March 6, 2020 and includes a $500.0 million letter of credit subfacility. Under the ENLK Credit Facility, ENLK 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 ENLK Credit Facility by an additional amount not to exceed $500.0 million and (2) subject to certain conditions and the consent of the requisite lenders, on two separate occasions, extend the maturity date of the ENLK Credit Facility by one year on each occasion. The ENLK Credit Facility contains certain financial, operational, and legal covenants. Among other things, these covenants include maintaining a ratio of consolidated indebtedness to consolidated EBITDA (which is defined in the ENLK Credit Facility and includes projected EBITDA from certain capital expansion projects) of no more than 5.0 to 1.0. If ENLK consummates one or more acquisitions in which the aggregate purchase price is $50.0 million or more, ENLK can elect to increase the maximum allowed ratio of consolidated indebtedness to consolidated EBITDA to 5.5 to 1.0 for the quarter of the acquisition and the three following quarters.

Borrowings under the ENLK Credit Facility bear interest at ENLK’s option at the Eurodollar Rate (the LIBOR Rate) plus an applicable margin (ranging from 1.00% to 1.75%) 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 (ranging from 0.0% to 0.75%). The applicable margins vary depending on ENLK’s credit rating. If ENLK breaches certain covenants governing the ENLK Credit Facility, amounts outstanding under the ENLK Credit Facility, if any, may become due and payable immediately.

On June 20, 2018, ENLK amended the change of control provisions of the ENLK Credit Facility to, among other things, designate GIP as Qualifying Owners (as defined in the ENLK Credit Facility). At September 30, 2018, ENLK was in compliance and expects to be in compliance with the covenants in the ENLK Credit Facility for at least the next twelve months.

As of September 30, 2018, there were $9.3 million in outstanding letters of credit and $765.0 million outstanding borrowings under the ENLK Credit Facility, leaving approximately $725.7 million available for future borrowing.

All other material terms and conditions of the ENLC Credit Facility, the ENLK Credit Facility, and outstanding senior unsecured notes are described in Part II, “Item 8. Financial Statements and Supplementary Data—Note 6” in our Annual Report on Form 10-K for the year ended December 31, 2017.

Income Taxes

9 Months Ended

Sep. 30, 2018

Income Tax Disclosure [Abstract]

Income Taxes

(6) Income Taxes

Income taxes included on the consolidated financial statements were as follows for the periods presented (in millions):



	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Current income tax provision	$	1.0	$	0.9	$	1.9	$	1.3
Deferred income tax provision	3.0		2.2		$	15.4	$	8.0
Total income tax provision	$	4.0	$	3.1	$	17.3	$	9.3

The following schedule reconciles total income tax expense and the amount calculated by applying the statutory U.S. federal tax rate to income before income taxes (in millions):



	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
Expected income tax provision based on federal statutory rate (1)	$	2.4		$	3.3		$	13.7		$	6.8
State income taxes expense, net of federal tax benefit	0.3			0.2			1.6			0.5
Income tax expense (benefit) from ENLK	0.9			0.5			(0.2		)	0.7
Unit-based compensation	(0.9		)	—			0.6			2.3
Other	1.3			(0.9		)	1.6			(1.0		)
Total income tax provision	$	4.0		$	3.1		$	17.3		$	9.3


(1)	The statutory federal tax rate for corporations was 21% at September 30, 2018 and 35% at September 30, 2017.

Certain Provisions of the Partnership Agreement

9 Months Ended

Sep. 30, 2018

Partners' Capital [Abstract]

Certain Provisions of the Partnership Agreement

(7) Certain Provisions of the Partnership Agreement


(a)	Issuance of ENLK Common Units

In August 2017, ENLK entered into the 2017 EDA with UBS Securities LLC, Barclays Capital Inc., BMO Capital Markets Corp., Merrill Lynch, Pierce, Fenner & Smith Incorporated, Citigroup Global Markets Inc., Jefferies LLC, Mizuho Securities USA LLC, RBC Capital Markets, LLC, SunTrust Robinson Humphrey, Inc. and Wells Fargo Securities, LLC (collectively, the “Sales Agents”) to sell up to $600.0 million in aggregate gross sales of ENLK common units from time to time through an “at the market” equity offering program. ENLK 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. ENLK has no obligation to sell any of the common units under the 2017 EDA and may at any time suspend solicitation and offers under the 2017 EDA.

For the nine months ended September 30, 2018, ENLK sold an aggregate of approximately 2.6 million common units under the 2017 EDA, generating proceeds of approximately $46.1 million (net of approximately $0.5 million of commissions paid to the Sales Agents). ENLK used the net proceeds for general partnership purposes. As of September 30, 2018, approximately $518.8 million in aggregate gross proceeds remains available to be issued under the 2017 EDA.

(b) ENLK Series B Preferred Units

Beginning with the quarter ended September 30, 2017, Series B Preferred Unit distributions are payable quarterly in cash at an amount equal to $0.28125 per Series B Preferred Unit (the “Cash Distribution Component”) plus an in-kind distribution equal to the greater of (A) 0.0025 Series B Preferred Units per Series B Preferred Unit and (B) an amount equal to (i) the excess, if any, of the distribution that would have been payable had the Series B Preferred Units converted into common units over the Cash Distribution Component, divided by (ii) the issue price of $15.00.

A summary of the distribution activity relating to the Series B Preferred Units during the nine months ended September 30, 2018 and 2017 is provided below:



Declaration period	Distribution paid as additional Series B Preferred Units	Cash Distribution (in millions)		Date paid/payable
2018
Fourth Quarter of 2017	413,658	$	16.0	February 13, 2018
First Quarter of 2018	416,657	$	16.2	May 14, 2018
Second Quarter of 2018	419,678	$	16.3	August 13, 2018
Third Quarter of 2018	422,720	$	16.4	November 13, 2018

2017
Fourth Quarter of 2016	1,130,131	$	—	February 13, 2017
First Quarter of 2017	1,154,147	$	—	May 12, 2017
Second Quarter of 2017	1,178,672	$	—	August 11, 2017
Third Quarter of 2017	410,681	$	15.9	November 13, 2017


(c)	ENLK Series C Preferred Units

Distributions on the Series C Preferred Units accrue and are cumulative from the date of original issue and payable semi-annually in arrears on the 15^th day of June and December of each year through and including December 15, 2022 and, thereafter, quarterly in arrears on the 15^th day of March, June, September, and December of each year, in each case, if and when declared by the General Partner out of legally available funds for such purpose. The distribution rate for the Series C Preferred Units is 6.0% per annum, and ENLK distributed $12.0 million to holders of Series C Preferred Units during the nine months ended September 30, 2018.


(d)	ENLK Common Unit Distributions

Unless restricted by the terms of the ENLK Credit Facility and/or the indentures governing ENLK’s senior unsecured notes, ENLK must make distributions of 100% of available cash, as defined in its partnership agreement, within 45 days following the end of each quarter. Distributions of available cash 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 incentive distributions with respect to (i) distributions on the Series B Preferred Units until such units convert into common units or (ii) the Series C Preferred Units.

The General Partner owns the general partner interest in ENLK and all incentive distribution rights in ENLK. The General Partner is entitled to receive incentive distributions if the amount ENLK distributes with respect to any quarter exceeds levels specified in its partnership agreement. Under the quarterly incentive distribution provisions, the General Partner is entitled to 13.0% of amounts ENLK distributes in excess of $0.25 per unit, 23.0% of the amounts ENLK distributes in excess of $0.3125 per unit, and 48.0% of amounts ENLK distributes in excess of $0.375 per unit.

A summary of ENLK’s distribution activity relating to the common units during the nine months ended September 30, 2018 and 2017 is provided below:



Declaration period	Distribution/unit		Date paid/payable
2018
Fourth Quarter of 2017	$	0.39	February 13, 2018
First Quarter of 2018	$	0.39	May 14, 2018
Second Quarter of 2018	$	0.39	August 13, 2018
Third Quarter of 2018	$	0.39	November 13, 2018

2017
Fourth Quarter of 2016	$	0.39	February 13, 2017
First Quarter of 2017	$	0.39	May 12, 2017
Second Quarter of 2017	$	0.39	August 11, 2017
Third Quarter of 2017	$	0.39	November 13, 2017


(e)	Allocation of ENLK Income

Net income is allocated to the General Partner in an amount equal to its incentive distribution rights as described in section “(d) ENLK Common Unit Distributions” above. The General Partner’s share of net income consists of incentive distribution rights to the extent earned, a deduction for unit-based compensation attributable to ENLC’s restricted units, and the percentage interest of ENLK’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 (in millions):



	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
Income allocation for incentive distributions	$	15.0		$	14.8		$	44.6		$	44.1
Unit-based compensation attributable to ENLC’s restricted and performance units	(7.3		)	(4.2		)	(15.7		)	(16.9		)
General Partner share of net income	—			—			0.6			0.1
General Partner interest in net income	$	7.7		$	10.6		$	29.5		$	27.3

Members' Equity

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Members' Equity

(8) Members' Equity

(a) Earnings Per Unit and Dilution Computations

As required under ASC 260, Earnings Per Share, unvested share-based payments that entitle employees to receive non-forfeitable distributions are considered participating securities for earnings per unit calculations. The following table reflects the computation of basic and diluted earnings per unit for the periods presented (in millions, except per unit amounts):



	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
ENLC interest in net income	$	7.7		$	6.2		$	48.1		$	10.2
Distributed earnings allocated to:
Common units (1) (2)	$	49.1		$	46.0		$	145.0		$	138.0
Unvested restricted units (1) (2)	0.9			0.7			2.2			1.9
Total distributed earnings	$	50.0		$	46.7		$	147.2		$	139.9
Undistributed loss allocated to:
Common units	$	(41.5	)	$	(39.9	)	$	(97.6	)	$	(128.0	)
Unvested restricted units	(0.8		)	(0.6		)	(1.5		)	(1.7		)
Total undistributed loss	$	(42.3	)	$	(40.5	)	$	(99.1	)	$	(129.7	)
Net income allocated to:
Common units	$	7.6		$	6.1		$	47.4		$	10.0
Unvested restricted units	0.1			0.1			0.7			0.2
Total net income	$	7.7		$	6.2		$	48.1		$	10.2
Basic and diluted net income per unit:
Basic	$	0.04		$	0.03		$	0.27		$	0.06
Diluted	$	0.04		$	0.03		$	0.26		$	0.06


(1)	For the three months ended September 30, 2018 and 2017, distributed earnings represent a declared distribution of $0.271 per unit payable on November 14, 2018 and a distribution of $0.255 per unit paid on November 14, 2017, respectively.

(2)

For the nine months ended September 30, 2018, distributed earnings included a declared distribution of $0.271 per unit payable on November 14, 2018, $0.267 per unit paid on August 14, 2018, and $0.263 per unit paid on May 15, 2018. For the nine months ended September 30, 2017, distributed earnings included distributions of $0.255 per unit paid on November 14, 2017, $0.255 per unit paid on August 14, 2017, and $0.255 per unit paid on May 15, 2017.

The following are the unit amounts used to compute the basic and diluted earnings per unit for the periods presented (in millions):



	Three Months Ended September 30,		Nine Months Ended September 30,
	2018	2017	2018	2017
Basic weighted average units outstanding:
Weighted average common units outstanding	181.2	180.6	181.1	180.4

Diluted weighted average units outstanding:
Weighted average basic common units outstanding	181.2	180.6	181.1	180.4
Dilutive effect of non-vested restricted units	1.3	1.2	1.1	1.3
Total weighted average diluted common units outstanding	182.5	181.8	182.2	181.7

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.

(b) Distributions

A summary of our distribution activity relating to the ENLC common units for the nine months ended September 30, 2018 and 2017, respectively, is provided below:



Declaration period	Distribution/unit		Date paid/payable
2018
Fourth Quarter of 2017	$	0.259	February 14, 2018
First Quarter of 2018	$	0.263	May 15, 2018
Second Quarter 2018	$	0.267	August 14, 2018
Third Quarter 2018	$	0.271	November 14, 2018

2017
Fourth Quarter of 2016	$	0.255	February 14, 2017
First Quarter of 2017	$	0.255	May 15, 2017
Second Quarter 2017	$	0.255	August 14, 2017
Third Quarter 2017	$	0.255	November 14, 2017

Investment in Unconsolidated Affiliates

9 Months Ended

Sep. 30, 2018

Equity Method Investments and Joint Ventures [Abstract]

Investment in Unconsolidated Affiliates

(9) Investment in Unconsolidated Affiliates

As of September 30, 2018, our unconsolidated investments consisted of a 38.75% ownership in GCF and an approximate 30% ownership in the Cedar Cove JV.

The following table shows the activity related to our investment in unconsolidated affiliates for the periods indicated (in millions):



	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
GCF
Distributions	$	5.3		$	3.5		$	16.4		$	10.6
Equity in income	$	4.6		$	4.5		$	14.0		$	8.5

HEP
Equity in loss (1)	$	—		$	—		$	—		$	(3.4	)

Cedar Cove JV
Contributions	$	—		$	1.5		$	0.1		$	11.8
Distributions	$	—		$	0.5		$	0.3		$	0.8
Equity in loss	$	(0.3	)	$	(0.1	)	$	(2.3	)	$	(0.1	)

Total
Contributions	$	—		$	1.5		$	0.1		$	11.8
Distributions	$	5.3		$	4.0		$	16.7		$	11.4
Equity in income (1)	$	4.3		$	4.4		$	11.7		$	5.0


(1)	We sold our ownership interest in HEP during the first quarter of 2017, resulting in a loss of $3.4 million for the nine months ended September 30, 2017.

The following table shows the balances related to our investment in unconsolidated affiliates as of September 30, 2018 and December 31, 2017 (in millions):



	September 30, 2018		December 31, 2017
GCF	$	46.0	$	48.4
Cedar Cove JV	38.5		41.0
Total investment in unconsolidated affiliates	$	84.5	$	89.4

Employee Incentive Plans

9 Months Ended

Sep. 30, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Employee Incentive Plans

(10) Employee Incentive Plans


(a)	Long-Term Incentive Plans

ENLC and ENLK each have similar unit-based compensation payment plans for officers and employees. ENLC grants unit-based awards under the EnLink Midstream, LLC 2014 Long-Term Incentive Plan (the “2014 Plan”), and ENLK grants unit-based awards under the amended and restated EnLink Midstream GP, LLC Long-Term Incentive Plan (the “GP Plan”).

We account for unit-based compensation in accordance with ASC 718, Stock Compensation (“ASC 718”), which requires that compensation related to all unit-based awards be recognized in the consolidated financial statements. Unit-based compensation cost is valued at fair value at the date of grant, and that grant date fair value is recognized as expense over each award’s requisite service period with a corresponding increase to equity or liability based on the terms of each award and the appropriate accounting treatment under ASC 718. Unit-based compensation associated with ENLC’s unit-based compensation plan awarded to ENLC’s officers and employees is recorded by us since ENLC has no substantial or managed operating activities other than its interests in ENLK and EOGP.

Amounts recognized on the consolidated financial statements with respect to these plans are as follows (in millions):



	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Cost of unit-based compensation charged to operating expense	$	5.2	$	2.8	$	9.5	$	10.4
Cost of unit-based compensation charged to general and administrative expense	11.9		7.4		22.3		28.5
Total unit-based compensation expense	$	17.1	$	10.2	$	31.8	$	38.9
Non-controlling interest in unit-based compensation	$	6.6	$	3.9	$	12.1	$	14.6
Amount of related income tax benefit recognized in net income (1)	$	2.2	$	2.4	$	4.1	$	9.1

(1)

For the three and nine months ended September 30, 2018, the amount of related income tax benefit recognized in net income excluded $0.9 million of income tax benefit and $0.6 million of income tax expense, respectively, related to tax deficiencies recorded upon vesting of restricted units. For the nine months ended September 30, 2017, the amount of related income tax benefit recognized in net income excluded $2.3 million of income tax expense related to tax deficiencies recorded upon vesting of restricted units. There was no income tax expense or benefit related to tax deficiencies recorded upon vesting of restricted units for the three months ended September 30, 2017.


(b)	EnLink Midstream Partners, LP Restricted Incentive Units

ENLK restricted incentive units are valued at their fair value at the date of grant, which is equal to the market value of ENLK common units on such date. A summary of the restricted incentive unit activity for the nine months ended September 30, 2018 is provided below:



	Nine Months Ended September 30, 2018
EnLink Midstream Partners, LP Restricted Incentive Units:	Number of Units			Weighted Average Grant-Date Fair Value
Non-vested, beginning of period	1,980,224			$	15.81
Granted (1)	1,586,750			15.27
Vested (1)(2)	(813,290		)	19.78
Forfeited	(157,057		)	12.42
Non-vested, end of period	2,596,627			$	14.44
Aggregate intrinsic value, end of period (in millions)	$	48.4


(1)	Restricted incentive units typically vest at the end of three years. In March 2018, ENLK granted 200,753 restricted incentive units with a fair value of $3.0 million to officers and certain employees as bonus payments for 2017, and these restricted incentive units vested immediately and are included in the restricted incentive units granted and vested line items.


(2)	Vested units included 255,653 units withheld for payroll taxes paid on behalf of employees.

A summary of the restricted incentive units’ aggregate intrinsic value (market value at vesting date) and fair value of units vested (market value at date of grant) for the three and nine months ended September 30, 2018 and 2017 is provided below (in millions):



	Three Months Ended September 30,				Nine Months Ended September 30,
EnLink Midstream Partners, LP Restricted Incentive Units:	2018		2017		2018		2017
Aggregate intrinsic value of units vested	$	3.7	$	0.6	$	12.8	$	16.3
Fair value of units vested	$	2.8	$	1.1	$	16.1	$	22.1

As of September 30, 2018, there was $22.2 million of unrecognized compensation cost related to non-vested ENLK 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

The General Partner grants performance awards under the GP Plan. The performance award agreements provide that the vesting of performance units (i.e., performance-based 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 AMZ, excluding ENLC and ENLK, on the grant date for the Subject Award. The performance units will vest based on the percentile ranking of the average of ENLC’s and ENLK’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, if any, with respect to the number of performance units vested. The vesting of units ranges from zero to 200% of the units granted depending on the EnLink TSR as compared to the TSR of the Peer Companies 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 ENLK’s common units and the designated Peer Companies’ securities; (iii) an estimated ranking of ENLK among the designated Peer Companies; and (iv) the distribution yield. The fair value of the performance unit on the date of grant is expensed over a vesting period of approximately three years. The following table presents a summary of the grant-date fair value of performance units granted and the related assumptions by performance unit grant date:



EnLink Midstream Partners, LP Performance Units:	March 2018
Beginning TSR price	$	15.44
Risk-free interest rate	2.38		%
Volatility factor	43.85		%
Distribution yield	10.5		%

The following table presents a summary of the performance units:



	Nine Months Ended September 30, 2018
EnLink Midstream Partners, LP Performance Units:	Number of Units			Weighted Average Grant-Date Fair Value
Non-vested, beginning of period	585,285			$	20.52
Granted	256,345			19.24
Vested (1)	(313,610		)	24.43
Forfeited	(76,351		)	16.62
Non-vested, end of period	451,669			$	17.74
Aggregate intrinsic value, end of period (in millions)	$	8.4


(1)	Vested units included 112,101 units withheld for payroll taxes paid on behalf of employees and 120,250 units that vested as a result of the GIP Transaction, net of units withheld for payroll taxes.

A summary of the performance units’ aggregate intrinsic value (market value at vesting date) and fair value of units vested (market value at date of grant) for the nine months ended September 30, 2018 is provided below (in millions). No performance units vested for the three and nine months ended September 30, 2017.



EnLink Midstream Partners, LP Performance Units:	Three Months Ended September 30, 2018		Nine Months Ended September 30, 2018
Aggregate intrinsic value of units vested	$	3.0	$	5.0
Fair value of units vested	$	3.6	$	7.7

As of September 30, 2018, there was $6.2 million of unrecognized compensation cost that related to non-vested ENLK performance units. That cost is expected to be recognized over a weighted-average period of 1.8 years.

In connection with the GIP Transaction, certain outstanding performance unit agreements were modified to increase the minimum vesting of units from zero to 100% as described in our Current Report on Form 8-K filed with the Securities and Exchange Commission (the “Commission”) on July 23, 2018. The modified performance units retained the original vesting schedules. As a result of the modifications, we will recognize an additional $2.3 million compensation cost over the life of these ENLK performance units.


(d)	EnLink Midstream, LLC Restricted Incentive Units

ENLC restricted incentive units are valued at their fair value at the date of grant, which is equal to the market value of ENLC common units on such date. A summary of the restricted incentive unit activity for the nine months ended September 30, 2018 is provided below:



	Nine Months Ended September 30, 2018
EnLink Midstream, LLC Restricted Incentive Units:	Number of Units			Weighted Average Grant-Date Fair Value
Non-vested, beginning of period	1,889,310			$	16.33
Granted (1)	1,469,452			15.76
Vested (1)(2)	(749,164		)	21.53
Forfeited	(146,045		)	12.38
Non-vested, end of period	2,463,553			$	14.64
Aggregate intrinsic value, end of period (in millions)	$	40.5


(1)	Restricted incentive units typically vest at the end of three years. In March 2018, ENLC granted 194,185 restricted incentive units with a fair value of $3.0 million to officers and certain employees as bonus payments for 2017, and these restricted incentive units vested immediately and are included in the restricted incentive units granted and vested line items.


(2)	Vested units included 238,970 units withheld for payroll taxes paid on behalf of employees.

A summary of the restricted incentive units’ aggregate intrinsic value (market value at vesting date) and fair value of units vested (market value at date of grant) for the three and nine months ended September 30, 2018 and 2017 is provided below (in millions):



	Three Months Ended September 30,				Nine Months Ended September 30,
EnLink Midstream, LLC Restricted Incentive Units:	2018		2017		2018		2017
Aggregate intrinsic value of units vested	$	3.3	$	0.6	$	12.6	$	15.2
Fair value of units vested	$	2.6	$	1.1	$	16.1	$	21.9

As of September 30, 2018, there was $21.5 million of unrecognized compensation cost related to non-vested ENLC restricted incentive units. The cost is expected to be recognized over a weighted-average period of 2.0 years.


(e)	EnLink Midstream, LLC’s Performance Units

ENLC grants performance awards under the 2014 Plan. The performance award agreements provide that the vesting of performance units (i.e., performance-based restricted incentive units) granted thereunder is dependent on the achievement of certain TSR performance goals relative to the TSR achievement of the Peer Companies over the applicable performance period. At the end of the vesting period, recipients receive distribution equivalents, if any, with respect to the number of performance units vested. The vesting of units ranges from zero to 200% of the units granted depending on the EnLink TSR as compared to the TSR of the Peer Companies 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’s common units and the designated Peer Companies’ securities; (iii) an estimated ranking of ENLC among the designated Peer Companies, and (iv) the distribution yield. The fair value of the performance unit on the date of grant is expensed over a vesting period of approximately three years. The following table presents a summary of the grant-date fair value assumptions by performance unit grant date:



EnLink Midstream, LLC Performance Units:	March 2018
Beginning TSR price	$	16.55
Risk-free interest rate	2.38		%
Volatility factor	51.36		%
Distribution yield	6.7		%

The following table presents a summary of the performance units:



	Nine Months Ended September 30, 2018
EnLink Midstream, LLC Performance Units:	Number of Units			Weighted Average Grant-Date Fair Value
Non-vested, beginning of period	548,839			$	22.14
Granted	223,865			21.63
Vested (1)	(283,637		)	27.25
Forfeited	(70,918		)	17.75
Non-vested, end of period	418,149			$	19.15
Aggregate intrinsic value, end of period (in millions)	$	6.9


(1)	Vested units included 100,109 units withheld for payroll taxes paid on behalf of employees and 109,819 units that vested as a result of the GIP Transaction, net of units withheld for payroll taxes.

A summary of the performance units’ aggregate intrinsic value (market value at vesting date) and fair value of units vested (market value at date of grant) for the nine months ended September 30, 2018 is provided below (in millions). No performance units vested for the three and nine months ended September 30, 2017.



EnLink Midstream, LLC Performance Units:	Three Months Ended September 30, 2018		Nine Months Ended September 30, 2018
Aggregate intrinsic value of units vested	$	2.8	$	4.7
Fair value of units vested	$	3.5	$	7.7

As of September 30, 2018, there was $6.0 million of unrecognized compensation cost that related to non-vested ENLC performance units. That cost is expected to be recognized over a weighted-average period of 1.8 years.

In connection with the GIP Transaction, certain outstanding performance unit agreements were modified to increase the minimum vesting of units from zero to 100% as described in our Current Report on Form 8-K filed with the Commission on July 23, 2018. The modified performance units retained the original vesting schedules. As a result of the modifications, we will recognize an additional $2.1 million compensation cost over the life of these ENLC performance units.

Derivatives

9 Months Ended

Sep. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives

(11) Derivatives

Interest Rate Swaps

We periodically enter into interest rate swaps in connection with new debt issuances. During the debt issuance process, we are exposed to variability in future long-term debt interest payments that may result from changes in the benchmark interest rate (commonly the U.S. Treasury yield) prior to the debt being issued. In order to hedge this variability, we enter into interest rate swaps to effectively lock in the benchmark interest rate at the inception of the swap. Prior to 2017, we did not designate interest rate swaps as hedges and, therefore, included the associated settlement gains and losses as interest expense, net of interest income on the consolidated statements of operations.

In May 2017, we entered into an interest rate swap in connection with the issuance of ENLK’s 5.45% senior unsecured notes due 2047 (the “2047 Notes”). In accordance with ASC 815, we designated this swap as a cash flow hedge. Upon settlement of the interest rate swap in May 2017, we recorded the associated $2.2 million settlement loss in accumulated comprehensive loss on the consolidated balance sheets. We will amortize the settlement loss into interest expense on the consolidated statements of operations over the term of the 2047 Notes. There was no ineffectiveness related to the hedge. For the three and nine months ended September 30, 2018, we amortized an immaterial amount of the settlement loss into interest expense from accumulated other comprehensive income (loss). We expect to recognize $0.1 million of interest expense out of accumulated other comprehensive income (loss) over the next twelve months. We have no open interest rate swap position as of September 30, 2018.

Commodity Swaps

We manage our exposure to changes in commodity prices by hedging the impact of market fluctuations. Commodity swaps are used both to manage and hedge price and location risk related to these market exposures and to manage margins on offsetting fixed-price purchase or sale commitments for physical quantities of crude, condensate, natural gas, and NGLs. We do not designate commodity swaps as cash flow or fair value hedges for hedge accounting treatment under ASC 815. Therefore, changes in the fair value of our derivatives are recorded in revenue in the period incurred. In addition, our commodity risk management policy does not allow us to take speculative positions with our derivative contracts.

We commonly enter into index (float-for-float) or fixed-for-float swaps in order to mitigate our 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 oil, fixed-for-float swaps are used to protect cash flows against price fluctuations: (1) where we receive a percentage of liquids as a fee for processing third-party gas or where we receive 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 our business and (3) where we are mitigating the price risk for product held in inventory or storage.

Assets and liabilities related to our derivative contracts are included in the fair value of derivative assets and liabilities, and the change in fair value of these contracts is recorded net as a gain (loss) on derivative activity on the consolidated statements of operations. We estimate the fair value of all of our derivative contracts based upon actively-quoted prices of the underlying commodities.

The components of loss on derivative activity in the consolidated statements of operations related to commodity swaps are (in millions):



	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
Change in fair value of derivatives	$	(0.8	)	$	(3.3	)	$	(14.8	)	$	3.8
Realized loss on derivatives	(4.6		)	(2.2		)	(5.3		)	(4.9		)
Loss on derivative activity	$	(5.4	)	$	(5.5	)	$	(20.1	)	$	(1.1	)

The fair value of derivative assets and liabilities related to commodity swaps are as follows (in millions):



	September 30, 2018			December 31, 2017
Fair value of derivative assets—current	$	12.5		$	6.8
Fair value of derivative liabilities—current	(21.9		)	(8.4		)
Fair value of derivative liabilities—long-term	(7.0		)	—
Net fair value of derivatives	$	(16.4	)	$	(1.6	)

As of September 30, 2018 and December 31, 2017, there were no derivative assets classified as long-term on the consolidated balance sheets.

Set forth below are the summarized notional volumes and fair values of all instruments held for price risk management purposes and related physical offsets at September 30, 2018 (in millions). The remaining term of the contracts extend no later than December 2022.



		September 30, 2018
Commodity	Instruments	Unit	Volume		Fair Value
NGL (short contracts)	Swaps	Gallons	(58.4	)	$	(12.0	)
NGL (long contracts)	Swaps	Gallons	18.9		3.1
Natural Gas (short contracts)	Swaps	MMBtu	(9.0	)	0.4
Natural Gas (long contracts)	Swaps	MMBtu	10.9		(1.4		)
Crude and condensate (short contracts)	Swaps	MMbbls	(13.3	)	(13.2		)
Crude and condensate (long contracts)	Swaps	MMbbls	1.3		6.7
Total fair value of derivatives					$	(16.4	)

On all transactions where we are exposed to counterparty risk, we analyze the counterparty’s financial condition prior to entering into an agreement, establish limits, and monitor the appropriateness of these limits on an ongoing basis. We primarily deal with financial institutions when entering into financial derivatives on commodities. We have entered into Master ISDAs that allow for netting of swap contract receivables and payables in the event of default by either party. If our counterparties failed to perform under existing swap contracts, the maximum loss on our gross receivable position of $12.5 million as of September 30, 2018 would be reduced to $0.1 million due to the offsetting of gross fair value payables against gross fair value receivables as allowed by the ISDAs.

Fair Value Measurements

9 Months Ended

Sep. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements

(12) Fair Value Measurements

ASC 820, Fair Value Measurements and Disclosures (“ASC 820”), sets forth a framework for measuring fair value and required disclosures about fair value measurements of assets and liabilities. Fair value under 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.

ASC 820 established 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.

Our 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 assets (liabilities) measured at fair value on a recurring basis are summarized below (in millions):



	Level 2
	September 30, 2018			December 31, 2017
Commodity Swaps (1)	$	(16.4	)	$	(1.6	)


(1)	The fair values of derivative contracts included in assets or liabilities for risk management activities represent the amount at which the instruments could be exchanged in a current arms-length transaction adjusted for our credit risk and/or the counterparty credit risk as required under ASC 820.

Fair Value of Financial Instruments

The estimated fair value of our financial instruments has been determined 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 we could realize upon the sale or refinancing of such financial instruments (in millions):



	September 30, 2018				December 31, 2017
	Carrying Value		Fair Value		Carrying Value		Fair Value
Long-term debt, including current maturities of long-term debt (1)	$	4,336.8	$	4,119.0	$	3,542.1	$	3,650.2
Installment Payables	$	—	$	—	$	249.5	$	249.6
Obligations under capital lease	$	2.9	$	2.5	$	4.1	$	3.4
Secured term loan receivable	$	49.9	$	49.9	$	—	$	—


(1)	The carrying value of long-term debt, including current maturities of long-term debt, is reduced by debt issuance costs of $23.5 million and $26.2 million at September 30, 2018 and December 31, 2017, respectively. The respective fair values do not factor in debt issuance costs.

The carrying amounts of our cash and cash equivalents, accounts receivable, and accounts payable approximate fair value due to the short-term maturities of these assets and liabilities.

ENLK had $765.0 million of outstanding borrowings under the ENLK Credit Facility as of September 30, 2018 and no outstanding borrowings under the ENLK Credit Facility as of December 31, 2017. ENLC had $101.4 million and $74.6 million in outstanding borrowings under the ENLC Credit Facility as of September 30, 2018 and December 31, 2017, respectively. As borrowings under the ENLK Credit Facility and ENLC Credit Facility accrue interest under floating interest rate structures, the carrying value of such indebtedness approximates fair value for the amounts outstanding under the ENLK Credit Facility and the ENLC Credit Facility. As of September 30, 2018 and December 31, 2017, ENLK had total borrowings under senior unsecured notes of $3.5 billion maturing between 2019 and 2047 with fixed interest rates ranging from 2.7% to 5.6%. The fair values of all senior unsecured notes and installment payables as of September 30, 2018 and December 31, 2017 were based on Level 2 inputs from third-party market quotations. The fair values of obligations under capital leases and the secured term loan receivable were calculated using Level 2 inputs from third-party banks.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Segment Information

9 Months Ended

Sep. 30, 2018

Segment Reporting [Abstract]

Segment Information

(13) Segment Information

Identification of the majority of our operating segments is based principally upon geographic regions served and the nature of operating activity. Our reportable segments consist of the following: natural gas gathering, processing, transmission, and fractionation operations located in North Texas and the Permian Basin primarily in West Texas (“Texas”), natural gas pipelines, processing plants, storage facilities, NGL pipelines, and fractionation assets in 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, Oklahoma, and the Ohio River Valley (“Crude and Condensate”). Operating activity for intersegment eliminations is shown in the Corporate segment. Our sales are derived from external domestic customers. We evaluate the performance of our operating segments based on segment profits.

Corporate assets consist primarily of cash, property, and equipment, including software, for general corporate support, debt financing costs, and unconsolidated affiliate investments in GCF and the Cedar Cove JV.

Based on the disclosure requirements of ASC 606, we are presenting revenues disaggregated based on the type of good or service in order to more fully depict the nature of our revenues. As we adopted ASC 606 using the modified retrospective method, only the consolidated statement of operations and revenue disaggregation information for the three and nine months ended September 30, 2018 are presented to conform to ASC 606 accounting and disclosure requirements. Prior periods presented in the consolidated financial statements and accompanying notes were not restated in accordance with ASC 606.

Summarized financial information for our reportable segments is shown in the following tables (in millions):



	Texas			Louisiana			Oklahoma			Crude and Condensate			Corporate			Totals
Three Months Ended September 30, 2018
Natural gas sales	$	69.1		$	129.5		$	41.9		$	—		$	—		$	240.5
NGL sales	16.8			839.6			12.8			0.1			—			869.3
Crude oil and condensate sales	—			0.1			0.3			722.0			—			722.4
Product sales	85.9			969.2			55.0			722.1			—			1,832.2
Natural gas sales—related parties	—			—			0.1			—			—			0.1
NGL sales—related parties	153.8			10.9			192.5			—			(347.2		)	10.0
Crude oil and condensate sales—related parties	13.4			0.1			18.0			1.5			(32.9		)	0.1
Product sales—related parties	167.2			11.0			210.6			1.5			(380.1		)	10.2
Gathering and transportation	71.7			17.5			50.2			0.8			—			140.2
Processing	39.4			0.8			31.5			—			—			71.7
NGL services	—			11.9			—			—			—			11.9
Crude services	—			—			0.2			14.9			—			15.1
Other services	2.4			0.1			—			0.1			—			2.6
Midstream services	113.5			30.3			81.9			15.8			—			241.5
Gathering and transportation—related parties	8.7			—			7.2			—			—			15.9
Processing—related parties	10.2			—			3.2			—			—			13.4
Crude services—related parties	—			—			0.1			6.3			—			6.4
Other services—related parties	0.1			—			—			—			—			0.1
Midstream services—related parties	19.0			—			10.5			6.3			—			35.8
Revenue from contracts with customers	385.6			1,010.5			358.0			745.7			(380.1		)	2,119.7
Cost of sales	(222.0		)	(923.6		)	(228.5		)	(702.6		)	380.1			(1,696.6		)
Operating expenses	(44.7		)	(28.7		)	(22.5		)	(18.8		)	—			(114.7		)
Loss on derivative activity	—			—			—			—			(5.4		)	(5.4		)
Segment profit (loss)	$	118.9		$	58.2		$	107.0		$	24.3		$	(5.4	)	$	303.0
Depreciation and amortization	$	(54.0	)	$	(32.7	)	$	(44.7	)	$	(12.9	)	$	(2.4	)	$	(146.7	)
Impairments	$	—		$	(24.6	)	$	—		$	—		$	—		$	(24.6	)
Goodwill	$	232.0		$	—		$	190.3		$	—		$	1,119.9		$	1,542.2
Capital expenditures	$	90.0		$	13.0		$	109.3		$	39.9		$	1.1		$	253.3

Three Months Ended September 30, 2017
Product sales	$	80.8		$	642.3		$	42.5		$	291.1		$	—		$	1,056.7
Product sales—related parties	130.6			10.0			94.6			—			(199.9		)	35.3
Midstream services	29.1			50.3			44.3			12.7			—			136.4
Midstream services—related parties	106.7			35.9			63.0			4.8			(35.4		)	175.0
Cost of sales	(198.5		)	(662.7		)	(148.2		)	(279.1		)	235.3			(1,053.2		)
Operating expenses	(41.1		)	(24.8		)	(17.1		)	(19.1		)	—			(102.1		)
Loss on derivative activity	—			—			—			—			(5.5		)	(5.5		)
Segment profit (loss)	$	107.6		$	51.0		$	79.1		$	10.4		$	(5.5	)	$	242.6
Depreciation and amortization	$	(52.5	)	$	(29.3	)	$	(40.2	)	$	(11.7	)	$	(2.6	)	$	(136.3	)
Impairments	$	—		$	—		$	—		$	(1.8	)	$	—		$	(1.8	)
Goodwill	$	232.0		$	—		$	190.3		$	—		$	1,119.9		$	1,542.2
Capital expenditures	$	39.1		$	7.5		$	107.7		$	13.3		$	2.1		$	169.7



	Texas			Louisiana			Oklahoma			Crude and Condensate			Corporate			Totals

Nine Months Ended September 30, 2018
Natural gas sales	$	208.9		$	377.2		$	127.9		$	—		$	—		$	714.0
NGL sales	16.8			2,075.9			18.3			0.9			—			2,111.9
Crude oil and condensate sales	—			0.2			0.3			1,940.1			—			1,940.6
Product sales	225.7			2,453.3			146.5			1,941.0			—			4,766.5
Natural gas sales—related parties	—			—			2.5			—			—			2.5
NGL sales—related parties	381.1			45.4			433.0			—			(822.1		)	37.4
Crude oil and condensate sales—related parties	39.4			0.3			63.9			3.3			(105.8		)	1.1
Product sales—related parties	420.5			45.7			499.4			3.3			(927.9		)	41.0
Gathering and transportation	98.4			51.8			91.4			2.5			—			244.1
Processing	52.7			2.5			87.9			—			—			143.1
NGL services	—			38.8			—			—			—			38.8
Crude services	—			—			0.2			42.8			—			43.0
Other services	6.4			0.5			—			0.2			—			7.1
Midstream services	157.5			93.6			179.5			45.5			—			476.1
Gathering and transportation—related parties	122.7			—			80.6			—			—			203.3
Processing—related parties	108.6			—			48.4			—			—			157.0
Crude services—related parties	—			—			1.5			14.9			—			16.4
Other services—related parties	0.5			—			—			—			—			0.5
Midstream services—related parties	231.8			—			130.5			14.9			—			377.2
Revenue from contracts with customers	1,035.5			2,592.6			955.9			2,004.7			(927.9		)	5,660.8
Cost of sales	(562.2		)	(2,333.3		)	(537.8		)	(1,898.3		)	927.9			(4,403.7		)
Operating expenses	(134.7		)	(82.3		)	(64.0		)	(56.3		)	—			(337.3		)
Loss on derivative activity	—			—			—			—			(20.1		)	(20.1		)
Segment profit (loss)	$	338.6		$	177.0		$	354.1		$	50.1		$	(20.1	)	$	899.7
Depreciation and amortization	$	(159.9	)	$	(92.4	)	$	(133.2	)	$	(38.0	)	$	(6.6	)	$	(430.1	)
Impairments	$	—		$	(24.6	)	$	—		$	—		$	—		$	(24.6	)
Goodwill	$	232.0		$	—		$	190.3		$	—		$	1,119.9		$	1,542.2
Capital expenditures	$	200.0		$	36.4		$	328.8		$	84.1		$	3.4		$	652.7

Nine Months Ended September 30, 2017
Product sales	$	240.5		$	1,735.5		$	84.7		$	913.2		$	—		$	2,973.9
Product sales—related parties	352.6			25.6			221.4			0.8			(493.1		)	107.3
Midstream services	85.1			159.7			105.2			45.7			—			395.7
Midstream services—related parties	319.0			100.2			171.8			13.4			(96.8		)	507.6
Cost of sales	(554.7		)	(1,803.1		)	(335.9		)	(884.1		)	589.9			(2,987.9		)
Operating expenses	(127.9		)	(74.8		)	(45.9		)	(60.2		)	—			(308.8		)
Loss on derivative activity	—			—			—			—			(1.1		)	(1.1		)
Segment profit (loss)	$	314.6		$	143.1		$	201.3		$	28.8		$	(1.1	)	$	686.7
Depreciation and amortization	$	(161.9	)	$	(86.8	)	$	(115.3	)	$	(35.8	)	$	(7.3	)	$	(407.1	)
Impairments	$	—		$	—		$	—		$	(8.8	)	$	—		$	(8.8	)
Goodwill	$	232.0		$	—		$	190.3		$	—		$	1,119.9		$	1,542.2
Capital expenditures	$	107.1		$	55.8		$	383.4		$	64.4		$	25.6		$	636.3

The table below represents information about segment assets as of September 30, 2018 and December 31, 2017 (in millions):



Segment Identifiable Assets:	September 30, 2018		December 31, 2017
Texas	$	3,161.9	$	3,094.8
Louisiana	2,583.8		2,408.5
Oklahoma	3,074.1		2,836.7
Crude and Condensate	1,069.9		929.5
Corporate	1,308.6		1,268.3
Total identifiable assets	$	11,198.3	$	10,537.8

The following table reconciles the segment profits reported above to the operating income as reported on the consolidated statements of operations (in millions):



	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
Segment profit	$	303.0		$	242.6		$	899.7		$	686.7
General and administrative expenses	(41.9		)	(31.3		)	(99.8		)	(98.5		)
Loss on disposition of assets	—			(1.1		)	(1.3		)	(0.8		)
Depreciation and amortization	(146.7		)	(136.3		)	(430.1		)	(407.1		)
Impairments	(24.6		)	(1.8		)	(24.6		)	(8.8		)
Gain on litigation settlement	—			—			—			26.0
Operating income	$	89.8		$	72.1		$	343.9		$	197.5

Other Information

9 Months Ended

Sep. 30, 2018

Other Liabilities Disclosure [Abstract]

Other Information

(14) Other Information

The following tables present additional detail for other current assets and other current liabilities, which consists of the following (in millions):



Other Current Assets:	September 30, 2018		December 31, 2017
Natural gas and NGLs inventory	$	119.4	$	30.1
Secured term loan receivable from contract restructuring, net of discount of $1.1	18.4		—
Prepaid expenses and other	17.3		11.1
Natural gas and NGLs inventory, prepaid expenses, and other	$	155.1	$	41.2



Other Current Liabilities:	September 30, 2018		December 31, 2017
Accrued interest	$	64.8	$	35.6
Accrued wages and benefits, including taxes	24.8		30.4
Accrued ad valorem taxes	33.4		27.8
Capital expenditure accruals	57.9		48.8
Onerous performance obligations	13.5		15.2
Other	67.0		65.1
Other current liabilities	$	261.4	$	222.9

Subsequent Event

9 Months Ended

Sep. 30, 2018

Subsequent Events [Abstract]

Subsequent Event

(15) Subsequent Event

On October 21, 2018, we and ENLK entered into the Merger Agreement and the related preferred restructuring agreement, pursuant to which, subject to the satisfaction or waiver of certain conditions:


•	Each issued and outstanding ENLK common unit (except for ENLK common units held by ENLC and its subsidiaries) will be converted into the right to receive 1.15 ENLC common units;


•	The General Partner’s incentive distribution rights in ENLK will be eliminated;

•

The Series B Preferred Units will continue to be issued and outstanding following the Merger, except that certain terms of the Series B Preferred Units will be modified pursuant to an amended partnership agreement of ENLK, including exchangeability of the Series B Preferred Units, under certain circumstances, into ENLC common units instead of ENLK common units, subject to the election of ENLK to instead redeem for cash any such exchanged Series B Preferred Units;


•	ENLC will issue to Enfield Holdings, L.P. (“Enfield”), the current holder of the Series B Preferred Units, for no additional consideration, a new class of non-economic ENLC common units equal to the number of Series B Preferred Units held by Enfield immediately prior to the effective time of the Merger, in order to provide Enfield with certain voting rights with respect to ENLC;


•	The Series C Preferred Units will continue to be issued and outstanding following the Merger; and


•	All unit-based awards issued and outstanding immediately prior to the effective time of the Merger under the GP Plan will be converted into an award with respect to ENLC common units with substantially similar terms as were in effect immediately prior to the effective time, with certain adjustments to the performance-based vesting of terms of applicable awards related to the performance of ENLC.

The Merger Transactions are expected to close in the first quarter of 2019, subject to obtaining approval of ENLK’s unitholders, customary regulatory approvals, and other customary closing conditions.

Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2018

Accounting Policies [Abstract]

Basis of Presentation

The accompanying 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 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.

Revenue Recognition

We generate the majority of our revenues from midstream energy services, including gathering, transmission, processing, fractionation, storage, condensate stabilization, brine services, and marketing, through various contractual arrangements, which include fee-based contract arrangements or arrangements where we purchase and resell commodities in connection with providing the related service and earn a net margin for our fee. While our transactions vary in form, the essential element of most of our transactions is the use of our assets to transport a product or provide a processed product to an end-user or marketer at the tailgate of the plant, pipeline, or barge, truck, or rail terminal. Revenues from both “Product sales” and “Midstream services” represent revenues from contracts with customers and are reflected on the 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 our midstream services as outlined above.


•	Midstream services—Midstream services represent all other revenue generated as a result of performing our midstream services as outlined above.

Adoption of ASC 606

Effective January 1, 2018, we adopted ASC 606 using the modified retrospective method. ASC 606 replaces previous revenue recognition requirements in GAAP and requires entities to recognize revenue at an amount that reflects the consideration to which they expect to be entitled in exchange for transferring goods or services to a customer. ASC 606 also requires significantly expanded disclosures containing qualitative and quantitative information regarding the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers.

Evaluation of Our Contractual Performance Obligations

In adopting ASC 606, we evaluated our contracts with customers that are within the scope of ASC 606. In accordance with the new revenue recognition framework introduced by ASC 606, we identified our performance obligations under our contracts with customers. These performance obligations include:


•	promises to perform midstream services for our customers over a specified contractual term and/or for a specified volume of commodities; and


•	promises to sell a specified volume of commodities to our customers.

The identification of performance obligations under our contracts requires a contract-by-contract evaluation of when control, including the economic benefit, of commodities transfers to and from us (if at all). This evaluation of control changed the way we account for certain transactions effective January 1, 2018, specifically those contracts in which there is both a commodity purchase and a midstream service. For contracts where control of commodities transfers to us before we perform our services, we generally have no performance obligation for our services, and accordingly, we do not consider these revenue-generating contracts for purposes of ASC 606. Based on the control determination, all contractually-stated fees that are deducted from our payments to producers or other suppliers for commodities purchased are reflected as a reduction in the cost of such commodity purchases. Alternatively, for contracts where control of commodities transfers to us after we perform our services, we consider these contracts to contain performance obligations for our services. Accordingly, we consider the satisfaction of these performance obligations as revenue-generating and recognize the fees received for satisfying them as midstream services revenues over time as we satisfy our performance obligations. For contracts where control of commodities never transfers to us and we simply earn a fee for our services, we recognize these fees as midstream services revenues over time as we satisfy our performance obligations.

We also evaluate our contractual arrangements that contain a purchase and sale of commodities under the principal/agent provisions in ASC 606. For contracts where we possess control of the commodity and act as principal in the purchase and sale, we record product sales revenue at the price at which the commodities are sold, with a corresponding cost of sales equal to the cost of the commodities when purchased. For contracts in which we do not possess control of the commodity and are acting as an agent, our consolidated statements of operations only reflect midstream services revenues that we earn based on the fees contained in the applicable contract.

Based on our review of our performance obligations in our contracts with customers, we changed the consolidated statement of operations classification for certain transactions from revenue to cost of sales or from cost of sales to revenue. For the three and nine months ended September 30, 2018, the reclassification of revenues and cost of sales resulted in a net decrease in revenue of approximately $179 million and $480 million, respectively, or 8% and 8%, respectively, compared to total revenues based on accounting prior to the adoption of ASC 606, with an equivalent net decrease in cost of sales. The change in total revenues as a result of the adoption of ASC 606 is made up of the following revenue line item changes (in millions):



	Increase (Decrease) in Revenue Due to ASC 606 Adoption
	Three Months Ended September 30, 2018			Nine Months Ended September 30, 2018
Product sales	$	(71	)	$	(149	)
Product sales—related parties	(7		)	(53		)
Midstream services	(98		)	(251		)
Midstream services—related parties	(3		)	(27		)
Total	$	(179	)	$	(480	)