Nonmonetary Notional Amount of Price Risk Derivatives of Crude Oil
Notional quantity of crude oil contract (in bbl)
Aggregate notional amount of crude oil price risk derivatives for instruments with notional amounts expressed in nonmonetary units.
Represents the percentage of derivative positions used to manage future commodity price exposure of the entity that are direct product hedges.
Direct Product Hedges as Percentage of Derivative Positions Used to Manage Future Commodity Price Exposure
Direct product NGL derivative contracts as a percentage of derivative positions used to manage future commodity price exposure
Nonmonetary Notional Amount of Price Risk Derivatives of Natural Gas
Notional quantity of natural gas contract (in MMBtu)
Aggregate notional amount of natural gas price risk derivatives for instruments with notional amounts expressed in nonmonetary units.
Aggregate notional amount of natural gas liquids price risk derivatives for instruments with notional amounts expressed in nonmonetary units.
Nonmonetary Notional Amount of Price Risk Derivatives of Natural Gas Liquids
Natural Gas Liquids (gal)
Normal butane prices
Normal Butane Contract [Member]
Derivative instrument whose primary underlying risk is tied to normal Butane prices.
Northeast Segment
Northeast [Member]
This element represents the Northeast segment of the entity.
Marcellus Segment [Member]
Represents information pertaining to Marcellus, a reportable segment of the entity.
Marcellus
The number of periods a counterparty has the option to renew.
Number of renewal periods
Number of Renewal Periods
Operating Leases of Lessor Contingent Rentals Received
Contingent lease payments received
Represents the contingent lease payments received under the contingent rental provisions.
Other Asset Noncurrent, Condensed Supplemental
Other long-term assets
Aggregate carrying amount, as of the balance sheet date, of noncurrent assets including goodwill, deferred financing costs, net and deferred contract costs, net, which are not separately disclosed in the condensed supplemental balance sheet information. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer).
Amendment Description
Miscellaneous equipment and vehicles
Represents other tangible personal properties, nonconsumable in nature, with finite lives used to produce goods and services and long-lived, depreciable assets used primarily for road transportation.
Other Machinery and Equipment and Vehicles [Member]
Amendment Flag
This element represents details pertaining to the parent and its subsidiaries, which are collectively known as Partnership.
Partnership
Parent and Consolidating Subsidiaries [Member]
Represents the aggregate of earnings from participating securities and dividend equivalent rights expense.
Participating Securities, Distributed and Dividend Equivalent Rights Expense
Add: Income allocable to phantom units and DER expense
Common units
Represents the common units as a type of ownership interest in a general partnership.
Common Units
Partner Capital [Member]
Payment of premiums and third-party expenditures related to early extinguishment of debt.
Payment of Debt Premiums and Third Party Expenses
Payment of premiums and third-party expenses
The cash outflow for the payment of the long-term liability related to a financing.
Payment of Liability
Payments of SMR Liability
Payments of SMR liability
Payments of Distributions to Common Unitholders and Minority Interest
Payments of distributions
Represents dividends paid to minority interest and distributions to common unitholders.
Payments of Premiums on Redemption of Long Term Debt
Payments of premiums on redemption of long-term debt
Represents the cash outflow during the reporting period for payments of premiums on redemption of long-term debt.
Payments to Acquire Interest in Subsidiaries
Investment in unconsolidated affiliates
The cash outflow associated with acquisition of interest in subsidiaries.
Investment in unconsolidated affiliates
Percentage of Additional Capital Contribution Required to Develop Projects
Percentage of additional capital contribution to increase ownership percentage
Represents the percentage of additional capital funding that the reporting entity can elect to contribute to the VIE in order to increase its ownership percentage.
Percentage of Additional Capital Contribution Required to Maintain Ownership Interest
Percentage of capital contribution to maintain ownership percentage
Represents the percentage of additional capital funding of the VIE the non-controlling interest owners have the right, but not obligation, to make in order to maintain its ownership interest at the level specified in the agreement after the aggregate contributions from all members reach $2 billion.
Percentage of capital contribution after non-controlling interest minimum required contribution
Represents the percentage of capital funding to the VIE that the reporting entity must contribute after the non-controlling interest has contributed $500 million.
Percentage of Capital Contribution after Noncontrolling Interest Required Contribution
Area of land (in acres/square miles)
Area of Land
Represents the percentage of cash available for distribution that the Partnership will receive from the VIE for all periods prior to the earlier of December 31, 2016 and the date at which the reporting entity has contributed 60% of the aggregate capital contributions made to the VIE. After such date, the cash available for distribution will be distributed in accordance with each members ownership percentage.
Percentage of Cash Generation Received
Percentage of available cash to be received by the Partnership
Represents the percentage of capital funding to the VIE that the reporting entity can elect to contribute after the non-controlling interest contributes $750 million but before the non-controlling interest has contributed $950 million.
Percentage of Initial Required Capital Contribution
Percentage of initial capital funding of VIE
Percentage of ownership interest in joint venture maximum
Represents the maximum percentage to which the reporting entity can elect to increase its ownership interest in the VIE. The reporting entity's interest could increase above this percentage if the non-controlling interest owners elect not to maintain their ownership interest.
Percentage of Ownership Interest in Joint Venture, Maximum
Minimum Percentage of ownership interest held by non-controlling interest
Represents the maximum percentage of ownership interest in the VIE that will be held by non-controlling interest holders if the reporting entity elects to increase its ownership percentage by funding additional capital.
Percentage of Ownership Interest in Joint Venture Minimum
Represents the percentage of capital funding to the VIE that the reporting entity can elect to contribute after the non-controlling interest contributes $750 million but before the non-controlling interest has contributed $950 million.
Percentage of Required Capital Contribution by Noncontrolling Owners
Percentage of capital required by noncontrolling owners after initial contribution
Current Fiscal Year End Date
Award Type [Axis]
Percentage of Required Capital Contribution by Reporting Entity after NCI
Represents the percentage of capital funding required by the reporting entity after the non-controlling interest owner has contributed $950 million.
Percentage of capital required by reporting entity after non-controlling interest minimum contribution
Performance Units
Performance Units [Member]
This element represents the performance units under share-based compensation program.
Period for which cash reserves are created for distribution to unitholders and the general partner
Represents the maximum number of future fiscal quarters' distributions to unitholders for which cash reserves can be established when determining the cash available for distribution.
Period for which Cash Reserves are Created for Distribution to Members or Limited Partners
Period with No Maturities of Long Term Debt
Period with no maturities of long-term debt
Represents the period with no maturities of long-term debt.
Phantom units
Phantom Units [Member]
This element represents the phantom units under share-based compensation program.
Proceeds from Liability
Proceeds from SMR Transaction
The cash inflow from a financing transaction.
Proceeds from Payments for Advances to Affiliates Subsidiaries and Holding Companies
Payments related to intercompany financing, net
The cash inflow or (outflow) related to the proceeds from or (repayment of) borrowings under an intercompany note payable.
Proceeds (payments) related to intercompany financing, net
2014
Product Supply Agreement Future Minimum Payments Due, Current
Contractually required payments under the SMR product supply agreement, due within one year of the balance sheet date.
SMR Product Supply Agreement, Future Minimum Payments, Net Minimum Payments
Product Supply Agreement Future Minimum Payments Net Minimum Payments [Abstract]
The portion of the total contractually required payments under the SMR product supply agreement that relate to the fees for services provided by the operator of the SMR.
Less: Services element
Product Supply Agreement Future Minimum Payments Services Included in Payment
Less: Interest
Product Supply Agreements Future Minimum Payments Interest Included in Payments
The portion of the total contractually required payments under the SMR product supply agreement that relate to the interest expense.
Document Period End Date
Propane Contract [Member]
Derivative instrument whose primary underlying risk is tied to propane prices.
Propane prices
Represents the long-lived, physical assets, other than miscellaneous equipment and vehicles, that are used in the normal conduct of business to produce goods and services and are not intended for resale.
Property, Plant and Equipment, Other than Miscellaneous Equipment and Vehicles [Member]
Property, plant and equipment other than miscellaneous equipment and vehicles
Derivative (loss) gain related to purchased product costs
Purchased Product Costs [Member]
The amount reported in the statement of operations related to the change in fair value of price risk derivatives contracts used to economically hedge the cost of residue gas, natural gas liquids and condensate.
Realized (loss) gain
The element represents the decrease (increase) in the fair value of net assets, or increase (decrease) in fair value of net liabilities, arising from realized and unrealized losses (gains) from assets and liabilities measured at fair value on a recurring basis using unobservable inputs -Level 3.
Realized Gain (Loss) on Derivative Instruments Not Designated as Hedging Instruments
Receivables and other current assets
This element represents receivables and other current assets. Receivables include the total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value. Other current assets include the aggregate carrying amount, as of the balance sheet date, of current assets not separately disclosed in the balance sheet. Current assets are expected to be realized or consumed within one year (or the normal operating cycle, if longer).
Receivables and Other Assets, Current
Restricted Cash and Cash Equivalents, Noncurrent Threshold Period
Threshold period for project completion for which restricted cash is held to classify as long-term asset
Represents the minimum period for which the restriction on the cash balance must be in place for the balance to be classified a long-term asset.
Revenue and Expense Accruals
Disclosure of accounting policy for making accruals based on estimates for both revenues and expenses due to the timing of compiling billing information, receiving certain third party information and reconciling the Partnership's records with those of third parties.
Revenue and Expense Accrual [Policy Text Block]
SMR Transaction [Member]
SMR Transaction
Represents the information pertaining to steam methane reformer transaction.
Tabular disclosure of disposal that was accounted for as a financing due to the Company's continuing involvement in the underlying in-substance real estate. The disclosure includes the classification and carrying value of the assets and liabilities that remain on the consolidated balance sheet as a result of the financing treatment.
Schedule of assets and liabilities of SMR transaction included in accompanying consolidated balance sheets
Schedule of Disposals Treated as Financing Arrangement Disclosures [Text Block]
Entity [Domain]
Schedule of Finite Lived Intangible Assets by Segment [Table]
Schedule of finite-lived intangible assets and the changes during the year due to acquisition, sale, impairment or for other reasons in total and by segment.
Oklahoma
OKLAHOMA
Tabular disclosure of future minimum product supply agreement payments as of the date of the latest balance sheet presented, in aggregate and for each of the five years succeeding fiscal years, with separate deductions from the total for the amount representing service costs, including any profit thereon, included in the payments and for the amount of the imputed interest necessary to reduce the net minimum payments to present value.
Schedule of minimum amounts payable annually under the product supply agreement
Schedule of Future Minimum Payments for Product Supply Agreement [Table Text Block]
Schedule of Future Minimum Rental Payments Receivable for Operating Leases [Table Text Block]
Tabular disclosure of future minimum payments receivable in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year.
Schedule of minimum future rentals on non-cancellable operating leases
Pennsylvania
Schedule of other long-term liabilities
Tabular disclosure of the components of other long-term liabilities.
Schedule of Other Long Term Liabilities [Table Text Block]
Schedule of Partners Capital Account Public Equity Offerings [Table Text Block]
Schedule of public equity offerings
Tabular disclosure of units issued or sold and net proceeds received by the partnership in the equity offerings transaction.
Table of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.
Summary of property, plant and equipment
Schedule of Property Plant and Equipment [Table Text Block]
Reconciliation of segment revenue to total revenue and operating income before items not allocated to segments to income before provision for income tax
Disclosure of reconciliation of segment revenue to consolidated revenue and operating income before items not allocated to segments to consolidated income (loss) before provision for income tax.
Schedule of Reconciliation of Revenue from Segments to Consolidated Revenues and Operating Income before Items Not Allocated to Segments to Consolidated Income (Loss) before Provision for Income Tax [Table Text Block]
Entity Listings [Table]
Schedule of Valuation and Qualifying Accounts Disclosure [Table Text Block]
Summary of activity in valuation allowance and reserve accounts
Schedule of any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements.
Texas
TEXAS
Second Significant Customer [Member]
Second significant customer
Represents information pertaining to the second significant customer.
2023B Senior Notes, 4.5% interest, issued January 2013 and due July 2023
A contractual arrangement to borrow and repay an amount under senior notes at an interest rate of 4.50 percent, which are due in July 2023.
Senior Notes 4.50 Percent Due July 2023 [Member]
A contractual arrangement to borrow and repay an amount under senior notes at an interest rate of 5.5%, which were issued in August 2012 and are due in February 2023.
Senior Notes 5.5 Percent Issued August 2012 Due February 2023 [Member]
2023A Senior Notes, 5.5% interest, issued August 2012 and due February 2023
2022 Senior Notes, 6.25% interest, issued October 2011 and due June 2022
A contractual arrangement to borrow and repay an amount under senior notes at an interest rate of 6.5%. These notes were issued in October 2011 as a part of the public offering completed on October 2011 and are due in June 2022.
Senior Notes 6.25 Percent Issued October 2011 Due June 2022 [Member]
Senior Notes 6.5 Percent Issued February and March 2011 Due August 2021 [Member]
A contractual arrangement to borrow and repay an amount under senior notes at an interest rate of 6.5%. These notes were issued in February and March 2011 as part of the public offering completed on February 24, 2011 and are due in August 2021.
2021 Senior Notes, 6.5% interest, issued February and March 2011 and due August 2021
A contractual arrangement to borrow and repay an amount under senior notes at an interest rate of 6.75%, which were issued in November 2010 and are due in November 2020.
Senior Notes 6.75 Percent Issued November 2010 Due November 2020 [Member]
2020 Senior Notes, 6.75% interest, issued November 2010 and due November 2020
A contractual arrangement to borrow and repay an amount under senior notes at an interest rate of 6.875 percent, which were issued in October 2004 and are due in 2014.
Senior Notes 6.875 Percent Issued October 2004 Due 2014 [Member]
2014 Senior Notes
2016 Senior Notes
A contractual arrangement to borrow and repay an amount under senior notes at an interest rate of 8.5 percent, which were issued in October 2006 and are due in 2016.
Senior Notes 8.5 Percent Issued July and October 2006 Due 2016 [Member]
Senior Notes 8.75 Percent Issued April and May 2008 Due April 2018 [Member]
2018 Senior Notes, 8.75% interest, issued April and May 2008
A contractual arrangement to borrow and repay an amount under senior notes at an interest rate of 8.75 percent, which were issued in April and May 2008 and are due in April 2018.
2016 and 2018 Senior Notes
Senior Notes Due 2016 and 2018 [Member]
A contractual arrangement to borrow and repay an amount under senior notes due in 2016 and 2018.
Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options, Number of Units to Vest Based on Performance Related to Market Criteria
Number of units that vested based on actual performance with regards to the market criteria
This element represents the number of units that vested on the basis of entity's actual performance with regards to the market criteria.
Number of units that vested based on actual performance with regards to the market criteria and performance criteria
This element represents the number of units that vested on the basis of entity's actual performance with regards to the market criteria and performance criteria.
Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options, Number of Units to Vest Based on Performance Related to Market Criteria and Performance Criteria
Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options, Performance Period
Performance period used in computation of total unitholder return
This element represents the period of time used in the computation of total unitholder return to determine the number of TSR Units that would vest.
Share Based Compensation [Table Text Block]
Summary of share-based compensation plans
Tabular disclosure of details of share-based compensation plans.
Short Term Swingline Loan Capacity
Short-term swingline loan maximum borrowing capacity
The maximum amount of borrowing capacity under a swingline loan facility that is available as of the balance sheet date.
This element represents the Southwest segment of the entity.
Southwest [Member]
Southwest Segment
Aggregate carrying amount, as of the balance sheet date, of the liability associated with steam methane reformer (SMR).
Total SMR liability
Steam Methane Reformer Liability
Carrying value SMR liability
Represents the recorded value of the liability associated with the sale of steam methane reformer (SMR).
Total SMR liability
Steam Methane Reformer Liability Carrying Value
Steam Methane Reformer Liability Current
Aggregate carrying amount, as of the balance sheet date, of current steam methane reformer liability. Current liabilities are expected to be paid within one year (or the normal operating cycle, if longer).
Less: Current portion of SMR Liability
Fair value SMR liability
Represents the fair value of the liability associated with the sale of steam methane reformer (SMR).
Steam Methane Reformer Liability Fair Value
Long-term portion of SMR Liability
Aggregate carrying amount, as of the balance sheet date, of noncurrent steam methane reformer liability. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer).
Steam Methane Reformer Liability Noncurrent
SMR liability
TSR Performance Units [Member]
This element represents the TSR Performance Units under share-based compensation program.
TSR Performance Units
Represents the takeaway capacity of an FERC-regulated pipeline.
Takeaway Capacity of Pipeline
Takeaway capacity of Arkoma Connector Pipeline (in dekatherms per day)
Threshold relocation cost of tangible assets as percentage of fair value to be classified as real estate (as a percent)
Represents the minimum threshold for relocation costs of tangible assets, expressed as a percentage of the fair value of the asset, that will result in the asset being classified as "in-substance" real estate.
Threshold Relocation Cost of Assets as Percentage of Fair Value to be Classified as Real Estate
Transfers to the non-controlling interests:
Transfers to Noncontrolling Interest [Abstract]
Unrestricted units
Unrestricted Units [Member]
This element represents the unrestricted units under share-based compensation program.
Utica Segment [Member]
Utica Segment
Represents information pertaining to the Utica segment of the entity.
Represents the valuation allowance as a percentage of long-term deferred tax asset attributable to capital loss carryforwards.
Valuation Allowance as Percentage of Deferred Tax Assets, Capital Loss Carryforwards
Valuation allowance as a percentage of long-term deferred tax asset attributable to capital loss carryforwards or state tax credit
Variable Interest Entity
Variable Interest Entity
Variable Interest Entities Disclosure [Text Block]
Represents the disclosure of variable interest entities (VIE), but not limited to the nature, purpose, size, and activities of the VIE, the carrying amount and classification of consolidated assets that are collateral for the VIE's obligations, lack of recourse if creditors (or beneficial interest holders) of a consolidated VIE have no recourse to the general credit of the primary beneficiary.
Variable Interest Entities [Text Block]
Represents the entire disclosure of variable interest entities (VIE), including, but not limited to the nature, purpose, size, and activities of the VIE, the carrying amount and classification of consolidated assets that are collateral for the VIE's obligations, lack of recourse if creditors (or beneficial interest holders) of a consolidated VIE have no recourse to the general credit of the primary beneficiary. An enterprise that holds a significant variable interest in a VIE but is not the primary beneficiary may disclose the nature of its involvement with the VIE and when that involvement began, the nature, purpose, size, and activities of the VIE and the enterprise's maximum exposure to loss as a result of its involvement with the VIE.
Variable Interest Entities
Represents the special non-cash allocation of income to non-controlling interest during the period.
Noncontrolling Owners Accrual of Preference Amount
Accrual of preference amount to EMG Utica's investment balance during the period
Weighted Average Number of Outstanding Common Units [Abstract]
Weighted average number of outstanding common units:
Ownership of the Partnership in its guarantor subsidiaries (as a percent)
Ownership Percentage of Guarantor Subsidiaries
The parent entity's ownership interest in all subsidiaries that guaranty its debt, expressed as a percentage.
Temporary Capital Contributions by Reporting Entity Maximum
Maximum amount of capital funding obligation of the non-controlling interest temporarily funded by the Partnership, per an amendment to the original agreement.
Maximum temporary funding by reporting entity
Schedule of Earnings Per Share by Common Class [Table]
The table contains disclosure pertaining to the entity's earnings per share.
Entity Well-known Seasoned Issuer
Earnings (loss) per unit
Earnings (Loss) Per Common Unit
Earnings Per Share [Line Items]
Entity Voluntary Filers
Disclosure of information about derivatives, financial assets and liabilities that are subject to offsetting, including enforceable master netting arrangements.
Offsetting Assets and Liabilities [Table]
Entity Current Reporting Status
Redeemable Non-controlling Interest (Temporary Equity)
Represents the information pertaining to Redeemable Non-controlling Interest (Temporary Equity).
Redeemable Noncontrolling Interest [Member]
Entity Filer Category
Represents an increase (decrease) in equity and an offsetting increase (decrease) in temporary equity due to reclassifications recorded during the period. Amounts reclassified from permanent equity to temporary equity relate to an agreement that gives the non-controlling interest holder a contingent option to put a portion of its interest to the reporting entity. Amounts reclassified from temporary equity to permanent equity relate to the portion of the put option that lapses during the period thereby reducing the amount that may be put to the reporting entity.
Redeemable non-controlling interest classified as temporary equity
Reclassifications Between Permanent and Temporary Equity
Entity Public Float
Manager Fees in Connection with Issuances of Common Unit
Manager fees
Represents the amount of fees paid or payable to manager for acting as sales agent in connection with the issuances of common units under the continuous equity offering program.
Entity Registrant Name
Reconciliation of the recorded fair value of the embedded derivative in the natural gas processing agreement to the total fair value of the derivative. The difference between the recorded value and the full fair value is due to GAAP requirement to allocate the fair value of the embedded derivative at the inception of the hybrid contract to the host contract.
Schedule reconciling liability recorded for an embedded derivative
Schedule of Reconciliation of Embedded Derivative Fair Value of Embedded Derivative Liability [Table Text Block]
Entity Central Index Key
Debt Instrument Write Off of Deferred Financing Costs and Unamortized Debt Discounts
Represents the non-cash amount of write-off of the unamortized discount and deferred finance costs related to the early extinguishment of long-term debt.
Non-cash write-off of the unamortized discount and deferred finance costs
Chesapeake Energy Corporation [Member]
Chesapeake
Represents information pertaining to the Chesapeake Energy Corporation.
Divestiture
Represents information pertaining to Summit Midstream Partners, LP.
Summit Midstream Partners LP [Member]
Summit
Entity Common Stock, Shares Outstanding
Sherwood
Represents information pertaining to Sherwood member.
Sherwood [Member]
Represents the length of gas gathering pipelines included in the divestiture transaction.
Length of Gas Gathering Pipelines
Length of gas gathering pipelines (in miles)
Number of compressor stations
Represents the number of compressor stations included in divestiture transaction.
Disposal Group, Including Discontinued Operation, Number of Compressor Stations
Entity Listings, Instrument [Axis]
Accounting Changes and Error Corrections [Text Block]
Recent Accounting Pronouncements
Disposal Group, Including Discontinued Operation, Power of Compressor Stations
Power of compressor stations
Represents the total horsepower of combined compression for assets included in divestiture transaction.
Instrument [Domain]
Partners Units Conversion Basis
Conversion ratio
Represents the number of common units that each Class B unit will be converted to.
Partners Units Conversion Basis Installments Number
Number of installments
Represents the number of installments in which Class B units will get converted into units to common stock.
Class B Units Conversion from Date of Issuance
Number of anniversaries
Represents the number of anniversaries of July 1, 2015 on which Class B units will be converted into common units.
M and R MWE Liberty LLC [Member]
M & R
Represents information pertaining to M & R MWE Liberty, LLC.
Buffalo Creek Acquisition [Member]
Buffalo Creek Acquisition
Represents information pertaining to the natural gas gathering and processing assets that were acquired by the entity (collectively, the Buffalo Creek Acquisition).
Length of gas gathering pipeline (in miles)
Represents the length of natural gas gathering pipeline expressed in miles, acquired under the business combination entered into by the entity.
Business Acquisition, Length of Natural Gas Gathering Pipeline
Business Acquisition, Keep Whole Processing Agreement Extended Additional Term
Extended additional term of the keep-whole processing agreement
Represents the extended additional term of the keep-whole processing agreement.
Represents the length of rights-of-way associated with the future construction of a high-pressure trunk line expressed in miles, acquired under the business combination entered into by the entity.
Business Acquisition, Length of Rights of Way Associated with Future Construction of High Pressure Trunk Line
Length of rights-of-way associated with the future construction of a high-pressure trunk line (in miles)
This item represents an other than temporary decline in value, net of tax, that has been recognized against an investment accounted for under the equity method of accounting.
Equity Method Investment, Other than Temporary Impairment, Net of Tax
Impairment of investment, net of provision for income tax
Represents the carrying value of assets included in the divesture transaction.
Carrying value of assets
Carrying Value of Disposal Assets
Schedule of Restated Condensed Consolidated Statement of Cash Flows Information [Table Text Block]
Represents information pertaining to the impact of a restatement on affected statement of cash flows line items.
Schedule of misstatement impact on condensed consolidated statement of cash flows
Represents information pertaining to the impact of a restatement on affected statement of changes in equity line items.
Schedule of misstatement impact on condensed consolidated statement of changes in equity
Schedule of Restated Condensed Consolidated Statement of Changes in Equity Information [Table Text Block]
Schedule of Restated Condensed Consolidated Balance Sheet Information [Table Text Block]
Represents information pertaining to the impact of a restatement on affected balance sheet line items.
Schedule of misstatement impact on consolidated balance sheet
Document Fiscal Year Focus
Schedule of Restated Condensed Consolidated Statement of Operations Information [Table Text Block]
Represents information pertaining to the impact of a restatement on affected statement of operations line items.
Schedule of misstatement impact on condensed consolidated statement of operations
Document Fiscal Period Focus
Management Fee Revenues
Management fee revenues unconsolidated affiliates
Represents revenues from management fees.
Northeast Segment [Member]
Northeast Segment
Represents information pertaining to the Northeast segment of the entity.
Commodity Type [Axis]
Disclosure pertaining to different commodity types.
At the Market Offering Program [Member]
ATM
Represents the At the Market equity offering program entered into by the entity with a financial institution (the Manager).
Stock Issued by Type of Program [Axis]
A categorization of various plans or programs under which the entity's stock is issued.
Stock Issued by Type of Program [Domain]
A group of different programs or plans under which the entity's stock is issued.
November 2012 at the Market Offering Program [Member]
November 2012 ATM
Represents the At the Market equity offering program entered into by the entity with a financial institution (the Manager) during November 2012.
August 2013 at the Market Offering Program [Member]
August 2013 ATM
Represents the At the Market equity offering program entered into by the entity with a financial institution (the Manager) during August 2013.
Number of Segments into which Existing Operations Combined Due to Immateriality
Number of segments into which financial statements of Utica and Marcellus were combined due to the immateriality of Utica operations
Represents the segments into which financial statements of segments were combined due to the immateriality of operations.
Revenue Deferral Adjustment and Other
Revenue deferral adjustment
The difference between the revenue recognized on the consolidated financial statements and the recognized for segment purposes. Certain contracts in which more consideration is received in the initial years than in later years and GAAP requires the entity to recognize the revenue evenly over the term of the contract by deferring revenue in the initial years. The chief operating decision maker evaluates segment performance and makes decisions based on the actual consideration received and therefore the segment revenues do not reflect the revenue deferral. Also includes other miscellaneous items of revenue.
Contribution by the Partnership
Contributions to Consolidated Joint Venture
This item represents the aggregate net amount of contribution made to a joint venture during the period.
Legal Entity [Axis]
Percentage of Initial Required Capital Contribution Original Agreement
Represents the percentage of capital funding to the VIE that the reporting entity can elect to contribute after the non-controlling interest contributes $350 million but before the non-controlling interest has contributed $500 million.
Percentage of initial capital funding of VIE
Document Type
Noncontrolling interest owners actual contribution
This element represents the actual amount of the VIE's capital that the non-controlling interest owners have funded.
Actual Capital Contributed by Noncontrolling Owners
Summary of Significant Accounting Policies
SMR Transaction Disclosure [Text Block]
The entire disclosure for information pertaining to steam methane reformer transaction.
SMR Transaction
Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options, Vested in Period, Number of Units Redeemed
Number of phantom units redeemed for cash that were vested
This element represents the number of units redeemed that were vested.
Equity Method Investment Contribution
Contributions to unconsolidated affiliate
Represents the aggregate amount of contribution made to unconsolidated affiliates during the period.
Tax effects of share based compensation
Disclosure of accounting policy for income tax effects of share-based compensation.
Tax Effect of Share based Compensation [Policy Text Block]
Third significant customer
Represents information pertaining to the third significant customer.
Third Significant Customer [Member]
Deferred Tax Assets Federal Net Operating Loss Carryforwards Current
Federal net operating loss carryforward
Represents the tax effect, as of the balance sheet date, of net operating loss carryforward arising within one year, available to reduce future taxable income under federal tax laws.
Deferred Tax Assets Capital Loss Carryforward Current
Capital loss carryforward
Represents the tax effect, as of the balance sheet date, of capital loss carryforward arising within one year, available to reduce future taxable income under enacted tax laws.
Represents the tax effect, as of the balance sheet date, of net operating loss carryback arising within one year, available to reduce future taxable income under state tax laws.
Deferred Tax Assets State Net Operating Loss Carryback Current
State net operating loss carryback
Mark West Utica EMG Condensate [Member]
Utica Condensate
Represents information pertaining to MarkWest Utica EMG Condensate (or Utica Condensate).
Represents information pertaining to Ohio Gathering.
Ohio Gathering [Member]
Ohio Gathering
Ohio Condensate [Member]
Ohio Condensate
Represents information pertaining to Ohio Condensate.
Blackhawk Midstream LLC [Member]
Blackhawk
Represents information pertaining to Blackhawk Midstream LLC.
Summit [Member]
Summit
Represents information pertaining to Summit.
The Energy and Minerals Group [Member]
EMG
Represents information pertaining to The Energy and Minerals Group (EMG).
Variable Interest Entity Option Available to Acquire Percentage of Voting Interest
Option available to acquire voting interest (as a percent)
Represents the option available to acquire voting interest as a percentage of the variable interest entity.
Percentage of Required Capital Contribution by Reporting Entity
Percentage of capital required by the reporting entity
Represents the percentage of capital funding required by the reporting entity.
Accrued Liabilities and Other Long-Term Liabilities
Accounts Payable and Accrued Liabilities Disclosure [Text Block]
Aggregate Capital Contribution
Total capital contribution
Represents the amount of capital contributed during the period.
Ownership Percentage Determined under Required True Up Transaction
Ownership percentage determined under required true up transaction
Represents the ownership percentage determined under Required True Up Transaction.
Redeemable Noncontrolling Interest [Policy Text Block]
Redeemable non-controlling interest
Disclosure of accounting policy for redeemable noncontrolling interest (as defined) included in the statement of financial position as either a liability or temporary equity.
Number of Managers Consisted in Board Prior to Condensate Equalization Date
Number of managers consisted in board of managers prior to the condensate equalization date
Represents the number of managers consisted in board of managers prior to the condensate equalization date.
Receivables from Equity Investments for Sale of Assets
Receivables from unconsolidated affiliates
Represents the receivables from equity investments for sale of assets, as of the balance sheet date.
Operating Loss Carryforwards, Expiration Period
NOL carryforwards expiration period
Represents the expiration period of each operating loss carryforward included in operating loss carryforward.
Consolidation Error and Impairment [Member]
Consolidation error and impairment
Represents effect of the prior period adjustments on the net income of each prior period presented in the entity's annual report for the year in which the adjustments are made.
Deferred Tax Assets, Operating Loss Carryforwards, Noncurrent
Net operating loss carryforward
Represents the amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carry forwards arising after one year.
Class B Partner Capital [Member]
Represents information about issuance of class B units by the reporting entity.
Class B Units
March 2014 at the Market Offering Program [Member]
March 2014 ATM
Represents the At the Market equity offering program entered into by the entity with a financial institution (the Manager) during March 2014.
Accordion option from increase borrowing capacity under the Credit Facility
Line of Credit Facility Accordion Feature Minimum
The minimum amount of the uncommitted accordion feature related to the entity's line of credit facility.
All Reportable Segment [Member]
Total segments
Total
Represents information pertaining to the activities of all operating segments, excluding certain reconciling items.
Percentage of aggregate investment balances ownership target for the partnership
Targeted percentage of aggregate investment balances for the partnership necessary to receive 60% of the cash generated by a joint venture.
Percentage Investment Balance Target for Distribution of Available Cash
Offsetting Assets and Liabilities [Table Text Block]
Tabular disclosure of derivatives that are subject to offsetting, including master netting arrangements.
Schedule of impact on the balance sheet if Partnership had elected to net derivative positions subject to master netting arrangements
Natural Gas or Natural Gas Liquids in Storage
Line fill
Carrying amount as of the balance sheet date of natural gas or natural gas liquids in storage, which is ready for sale.
Represents information pertaining to the commodity contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, subject to a master netting arrangement.
Commodity Contracts Subject to Master Netting Arrangement [Member]
Commodity contracts subject to a master netting arrangement
Commodity Contract Not Subject to Master Netting Arrangement [Member]
Commodity contracts not subject to a master netting arrangement
Represents information pertaining to the commodity contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, not subject to a master netting arrangement.
Trade, net
Accounts receivable
Accounts Receivable, Net, Current
Current Assets [Member]
Current Assets
Represents the primary financial statement caption encompassing current assets.
Non Current Assets [Member]
Non-current Assets
Represents the primary financial statement caption encompassing non-current assets.
Long-term Assets
Current Liabilities [Member]
Current Liabilities
Represents the primary financial statement caption encompassing current liabilities.
Non Current Liabilities [Member]
Non-current Liabilities
Represents the primary financial statement caption encompassing non-current liabilities.
Long-term Liabilities
Offsetting Assets and Liabilities [Line Items]
Gross and net information about the assets and liabilities subject to master netting arrangements
Business Acquisition, Cryogenic Natural Gas Processing Plant Capacity
Capacity of cryogenic gas processing plant (in MMcf/d)
Represents the capacity of cryogenic natural gas processing plant expressed in million cubic feet of natural gas per day, acquired under the business combination entered into by the entity.
Cash Paid as Consideration for Extension of Term of Keep Whole Processing Agreement
Additional cash paid as consideration for extension term of the keep-whole processing agreement
Represents the additional cash paid contemporaneously with business combination entered into by the entity as consideration for extension in term of the keep-whole processing agreement.
Business Combination, Cash Paid Prior to Working Capital Adjustment
Cash paid prior to giving effect to the final working capital adjustment
Represents the amount of cash paid to acquire the entity, prior to giving effect to the final working capital adjustment in a business combination.
Southwest Segment
Southwest Segment [Member]
Represents information pertaining to the Southwest segment of the entity.
September 2013 at the Market Offering Program [Member]
September 2013 ATM
Represents the At the Market equity offering program entered by the entity with a financial institution (the Manager) during September 2013.
Business Acquisition, Number of Cryogenic Natural Gas Processing Plants Acquired
Represents the number of cryogenic natural gas processing plants acquired during the period.
Number of cryogenic natural gas processing plants acquired
Disclosure of accounting policy for change in ownership interest in subsidiaries that includes method of accounting used for different circumstances under which there is a change in ownership interest in subsidiaries.
Accounting for Changes in Ownership Interests in Subsidiaries [Policy Text Block]
Accounting for Changes in Ownership Interests in Subsidiaries
Product and operations
Carrying value as of the balance sheet date of obligations incurred through that date and payable for product and operations. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).
Accrued Product and Operations Current
Accrued property, plant and equipment
Carrying value as of the balance sheet date of obligations incurred through that date and payable for property, plant and equipment. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).
Accrued Property Plant and Equipment Current
Aggregate Required Capital Contributed by Noncontrolling Owners before Entity Option to Contribute
Noncontrolling interest owners initial funding commitment to VIE
The amount that the non-controlling interest owners are required to contribute to the VIE before the reporting entity has the option to contribute up to 60% of the subsequent capital required by the VIE.
Adjustment to Additional Paid in Capital, Deferred Income Tax Impact
Deferred income tax impact from changes in equity
This element represents deferred income tax impact from changes in equity during the accounting period.
Amortization of premium payments
The expenses charged against earnings for periodic recognition of premium payments.
Amortization of Premium Payments
Business Acquisition, Cost of Acquired Entity Receivables for Working Capital Adjustment
Receivables for working capital adjustment
Represents amount due to the company for the refund of a portion of the purchase price of the business acquired. Refund relates to the final working capital adjustment.
Represents the additional capacity of cryogenic natural gas processing plant installed, expressed in million cubic feet of natural gas per day, acquired under the business combination entered into by the entity.
Business Acquisition, Cryogenic Natural Gas Processing Plant Additional Capacity
Additional capacity of cryogenic natural gas processing plant installed (in MMcf/d)
Represents the capacity of refrigeration natural gas processing plant expressed in million cubic feet of natural gas per day, acquired under the business combination entered into by the entity.
Business Acquisition, Refrigeration Natural Gas Processing Plant Capacity
Capacity of refrigeration natural gas processing plant (in MMcf/d)
Temporary Capital Contributed by Partnership Actual
Temporary capital contributed by partnership
Represents the amount of the VIE's capital requirements that the reporting entity temporarily funded on behalf of the non-controlling interest owners.
Represents the amount of retained VIE's capital requirements that the partnership contributed under the joint venture agreement.
Capital Contribution by Partnership Retained
Capital contributed by partnership retained
Capital Loss Carryforwards
Capital loss carryforwards
The sum of capital loss carryforwards, before tax effects, available to reduce future taxable income under enacted tax laws.
Class B Partner [Member]
Class B Units
Represents information about issuance of class B units by the reporting entity.
Investment in intercompany notes, net
Collection of Payments to Acquire Intercompany Notes, Net
Represents net cash inflow (outflow) associated with the collection of and (investment in) intercompany notes.
Accounts payable ($26,094 and $82,007, respectively)
Accounts payable
Accounts Payable, Current
Commodity Type [Domain]
Represents the information pertaining to all types of commodity.
Consolidated Affiliate Dividends or Distributions
Represents dividends or other distributions received from consolidated subsidiaries. This element includes distributions that constitute a return of investment.
Distributions from consolidated affiliates
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Purchase of Interest by Parent, Income Tax Benefit
Tax benefit resulting from change in equity due to purchase of additional interest in consolidated subsidiary
Represents the tax expense (benefit) related to the change in total (consolidated) equity attributable to the parent resulting from the purchase of an additional interest in a consolidated subsidiary.
Decrease in common unit equity for transaction costs related to 2011 acquisition of equity interest in MarkWest Liberty Midstream
Represents the decrease in total (consolidated) equity attributable to the parent related to the transaction costs paid in conjunction with the purchase of an additional interest in a consolidated subsidiary. The purchase of the additional equity interest represented by this element increases the parent's controlling interest in the subsidiary and is accounted for as an equity transaction.
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest Changes, Purchase of Interest by Parent, Transaction Costs
The reference rate for loans with the reference rate determined based on the entity's adjusted consolidated EBITDA as defined in the agreement.
Alternate Base Rate Loans
Debt Instrument, Alternate Base Rate Loan [Member]
Accounts Receivable Related Parties Current
Receivable balance
Receivables from unconsolidated affiliates, net ($10,334 and $0, respectively)
Receivables from unconsolidated affiliate
Receivables from unconsolidated affiliates
Interest Coverage Ratio
Represents the interest coverage ratio required by financial covenants under the terms of the debt agreement.
Debt Instrument, Covenant Interest Coverage Ratio
Represents the maximum leverage ratio allowed under the debt covenants.
Debt Instrument, Covenant Total Leverage Ratio
Total Leverage Ratio
Debt Instrument, Covenant Total Leverage Ratio before Amendment
Total leverage ratio before amendment
Represents the maximum total leverage ratio allowed under the debt covenants before amendment.
Issue price as percentage of par value
Represents the issue price of the debt instrument as a percentage of its face value.
Debt Instrument, Issue Price as Percentage of Face Value
Debt Instrument, LIBOR Loan [Member]
LIBO Rate Loans
The reference rate for loans with the reference rate tied to the London Interbank Offered Rate (LIBOR).
Debt Instrument, Variable Rate Base Federal Funds [Member]
Federal Funds rate
The Federal Funds rate used to calculate the variable interest rate of the debt instrument.
Revenue deferral adjustment
Deferred Revenue Adjustment
The difference between the revenue recognized on the consolidated financial statements and the recognized for segment purposes. Certain contracts in which more consideration is received in the initial years than in later years and GAAP requires the entity to recognize the revenue evenly over the term of the contract by deferring revenue in the initial years. The chief operating decision maker evaluates segment performance and makes decisions based on the actual consideration received and therefore the segment revenues do not reflect the revenue deferral.
Revenue deferral adjustment and other
Derivative instruments
The tax effect as of the balance sheet date of the amount of the estimated future tax deductions within one year attributable to derivative instruments which can only be deducted for tax purposes when losses on such instruments are realized, and which can only be realized if sufficient tax-basis income is generated in future periods to enable the deduction to be taken.
Deferred Tax Assets, Derivative Instruments, Current
Deferred Tax Assets, Derivative Instruments, Noncurrent
Derivative instruments
The tax effect as of the balance sheet date of the amount of the estimated future tax deductions arising after one year attributable to derivative instruments which can only be deducted for tax purposes when losses on such instruments are realized, and which can only be realized if sufficient tax-basis income is generated in future periods to enable the deduction to be taken.
The tax effect as of the balance sheet date of the amount of the estimated future tax deductions arising within one year from all currently nondeductible expenses reflected in all reserves and accrued liabilities, which can only be deducted for tax purposes when relevant losses are realized or relevant obligations are actually incurred, and which can only be realized if sufficient tax-basis income is generated in future periods to enable the deduction to be taken.
Deferred Tax Assets, Tax Deferred Expense Reserves and Accruals, Current
Accruals and reserves
Accruals and reserves
The tax effect as of the balance sheet date of the amount of the estimated future tax deductions arising after one year from all currently nondeductible expenses reflected in all reserves and accrued liabilities, which can only be deducted for tax purposes when relevant losses are realized or relevant obligations are actually incurred, and which can only be realized if sufficient tax-basis income is generated in future periods to enable the deduction to be taken.
Deferred Tax Assets Tax, Deferred Expense Reserves and Accruals, Noncurrent
Expected settlement period of deferred tax balances to classify the balances as current
Represents the maximum expected settlement period of deferred tax balances for the balances to be classified as current.
Deferred Tax, Balance Settlement Period to be Classified as Current
The amount as of the balance sheet date of the estimated future tax effects attributable to a difference between the tax basis and the generally accepted accounting principles basis of a company's investment in its affiliated groups which will increase future taxable income when such basis difference reverses.
Investment in affiliated groups
Deferred Tax Liabilities Investment in Affiliated Groups Noncurrent
Deferred Tax Liabilities, Noncurrent [Abstract]
Long-term deferred tax liabilities:
Deferred Tax Liabilities, Property, Plant and Equipment and Intangibles
The amount as of the balance sheet date of the estimated future tax effects attributable to the difference between the tax basis of capital assets and intangible assets and the basis of capital assets and intangible assets computed in accordance with generally accepted accounting principles. The difference in basis, attributable to different capitalization of costs, depreciation, or amortization methodologies, will increase future taxable income when such basis difference is realized. Capital assets include but are not limited to assets such as land, real estate, leasehold improvements, machinery and equipment and furniture and fixtures. Intangible assets include, but are not limited to, assets such as patents, trademarks and customer lists.
Property, plant and equipment and intangibles
A right, granted in tandem with a specific phantom unit, to receive an amount in cash equal to, and at the same time as, the cash distributions made by the entity with respect to a unit during the period such phantom unit is outstanding. Payment of distribution equivalent rights associated with units that are expected to vest are recorded as capital distributions; however, payments associated with units that are not expected to vest are recorded as compensation expense.
Distribution equivalent rights
Distribution Equivalent Rights [Member]
Represents the period after the end of each quarter within which available cash is distributed to unitholders.
Distribution Made to Member or Limited Partner Payment Period
Period after the end of each quarter within which available cash is distributed to unitholders
Limited Partner Maximum Share Offering Limited Partner Units
Maximum number of common units representing limited partner interests that can be sold through the Manager
Represents the maximum number of common units representing limited partnership interests that may be sold under a continuous equity offering program.
Distribution received as reimbursement for temporary funding
Represents the distribution received as reimbursement for temporary funding under the joint venture agreement.
Distribution Received as Reimbursement for Temporary Funding
Document and Entity Information
Derivative instrument whose primary underlying risk is tied to the price of electricity.
Embedded derivative in electricity purchase contract
Electricity [Member]
Inception value for period from April 1, 2015 to December 31, 2022
Fair value (as of the inception of the agreements) of a natural gas purchasing contract that is embedded in a processing agreement. The natural gas purchase is considered an embedded derivative; however, in accordance with GAAP, the fair value of the embedded derivative at inception is deemed to be allocable to the host contract and is not separately recorded as an embedded derivative.
Embedded Derivative, Fair Value of Embedded Derivative, Liability Contract Related at Inception of Extended Period
Estimated fair value of embedded derivative contract liability including portion allocable to host processing agreement
Fair value as of the balance sheet date of a natural gas purchase agreement embedded in a gas processing agreement. The natural gas purchase agreement is an embedded derivative. This amount includes the value of the embedded purchase agreement at the inception of the arrangement. however, in accordance with GAAP, the fair value of the embedded derivative at inception is deemed to be allocable to the host contract and is not separately recorded as an embedded derivative.
Embedded Derivative Fair Value of Embedded Derivative Liability Including Inception Value Allocable to Host Contract
Represents the term for which the counterparty has the option to renew a purchase agreement related to an embedded derivative.
Embedded Derivative Renewal Term
Term of counterparty option to renew gas purchase agreement
Producer's option to extend successive years, number
Aggregate cash flow impact during the period related to equity instruments granted under equity-based payment arrangements. Amount includes the cash paid to cover an employee's income tax withholding obligation as part of a net-share settlement, net of reductions in the entity's income taxes that arise when compensation cost (from non-qualified share-based compensation) recognized on the entity's tax return exceeds compensation cost from equity-based compensation recognized in financial statements.
Share-based payment activity
Employee Service Share Based Compensation Cash Flow Effect
Purchase of non-controlling interest of MarkWest Liberty M&R, net of tax benefit
Equity Changes from Purchase of Noncontrolling Interest
Change in equity due to the purchase of the interests of noncontrolling shareholders. Increase or (decrease) in partner's equity equals the amount by which total fair value of the consideration, including transaction costs, is less than or (exceeds) the carrying value of the non-controlling interest on the date of acquisition. Decrease in non-controlling interest equals the carrying value of the non-controlling interest acquired.
Facility expenses
This element represents facility costs including the amount of gain (loss) recognized in earnings in the period from the increase (decrease) in the fair value of price risk derivatives related to facility expenses not designated as hedging instruments.
Facility Costs Including Gain (Loss) on Price Risk Derivative Instruments Not Designated as Hedging Instruments Related to Facility Expense
Facility Costs Labor and Related Expense
Compensation expense included in facility expenses not allocated to segments
The aggregate amount of expenditures for compensation included in facility costs related to gas and oil produced and sold during the reporting period that is not allocated to any operating segment.
The amount reported in the statement of operations related to the change in fair value of price risk derivative contracts utilized to economically hedge electricity costs for a facility.
Derivative loss related to facility expenses
Facility Expense [Member]
This element represents the facility expense adjustments to reconcile segment facility expenses to consolidated facility expenses.
Facility Expenses Adjustments
Facility expense adjustments
Unobservable inputs used in the valuation of Level 3 instruments of Assets and Liabilities
Fair Value Inputs Assets and Liabilities Quantitative Information [Line Items]
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Table]
Schedule of the inputs used in the fair value measurement of assets and liabilities. This disclosure may include, but is not limited to, the fair value of the asset and liabilities, valuation technique used to measure fair value, the inputs used to measure fair value, the ranges of the inputs, and the weighted averages of the inputs.
Represents the forward commodity price used as an input to measure fair value.
Fair Value Inputs Commodity Price
Forward price (in dollars per unit)
Percentage rate that is indicative of the expected degree of movement in the price of the crude option over time.
Fair Value Inputs Crude Option Volatilities
Crude option volatilities (as a percent)
Percentage rate that is indicative of the expected degree of movement in the price of the Propane option over time.
Fair Value Inputs Propane Option Volatilities
Propane option volatilities (as a percent)
Fair Value Inputs Price Per Mega Watt Hour
Forward ERCOT Pricing (per Megawatt Hour)
Represents the price per MegaWatt Hour of electricity, used as an input to measure fair value.
Represents the percentage of likelihood of renewal of the commodity contract with embedded derivative.
Fair Value Inputs Probability of Renewal
Probability of renewal (as a percent)
Fair Value Measurement with Unobservable Inputs Reconciliation, Recurring Basis Asset and Liabilities Net, Change in Unrealized Gain (Loss) Included in Earnings Contract Held
The amount of total losses for the period included in earnings attributable to the change in unrealized gains or losses relating to contracts still held at end of period
This element represents total unrealized gains or losses for the period, arising from assets and liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings. Such unrealized gains or losses relate to those contracts still held at the reporting date.
Revolving Credit Facility
Represents the information pertaining to first amendment to the amended and restated senior secured revolving credit facility.
First Amendment to Amended and Restated Line of Credit after Joinder Agreement [Member]
Represents information pertaining to the first significant customer.
First Significant Customer [Member]
First significant customer
Fractionation and storage facilities
Fractionation and Storage Facilities [Member]
Represents the long-lived depreciable assets for fractionation and storage facilities.
The threshold amount for capital expenditure, in excess of which, the Partnership is required to fund all capital expenditures.
Threshold above which entity is obligated to fund all capital expenditures
Funding of Capital Expenditure in Excess of Specified Threshold Limit
Gain (loss) on early settlement of commodity contracts
The realized gain or (loss) on the early settlement of derivative instruments not designated as hedging instruments.
Gain (Loss) on Early Settlement of Derivative Instruments Not Designated as Hedging Instruments
Derivative loss related to facility expenses
Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of price risk derivatives not designated as hedging instruments. Facility expense gains and losses relate to contracts utilized to economically hedge electricity costs for a facility.
Derivative gain (loss) related to facility expenses
Gain (Loss) on Price Risk Derivative Instruments Not Designated as Hedging Instruments Related to Facility Expense
Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of price risk derivatives not designated as hedging instruments. Purchased product costs gains and losses relate to contracts utilized to economically hedge costs.
Gain (Loss) on Price Risk Derivative Instruments Not Designated as Hedging Instruments Related to Product Cost
Derivative loss (gain) related to purchased product costs
Total derivative gain related to purchase product costs
Derivative (loss) gain not allocated to segments
Total revenue: derivative gain
Derivative (loss) gain
Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of price risk derivatives not designated as hedging instruments. Revenue gains and losses relate to contracts utilized to economically hedge the cash flow for the sale of a product.
Gain (Loss) on Price Risk Derivative Instruments Not Designated as Hedging Instruments Related to Revenue
Long-lived, depreciable assets related to natural gas gathering and NGL transportation pipelines and facilities.
Natural gas gathering and NGL transportation pipelines and facilities
Gas Gathering and Transmission Equipment and Facilities [Member]
Imputed Interest Rate on Liability
Imputed interest rate on SMR liability (as a percent)
Represents the imputed interest rate on SMR Liability, which is also the Partnership's incremental borrowing rate at the time of the transaction.
Income (Loss) from Affiliates Subsidiaries and Holding Company
Earnings from consolidated affiliates
Represents the income (loss) from affiliates, subsidiaries and the holding company.
Income Tax
Income Tax Expense (Benefit) Continuing Operations, Income Tax Reconciliation [Line Items]
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
Income Tax Reconciliation, Expense (Benefit) on Income from Class A Units
Provision on income from Class A units
This element represents the income tax expense (benefit) of a taxable wholly-owned subsidiary based on its share of the entity's income resulting from its ownership of Class A units.
Prior period adjustments and tax rate changes
The portion of the difference between total income tax expense or benefit as reported in the income statement for the current period and the expected income tax expense or benefit computed attributable to revisions of previously reported income tax expense and changes in the income tax rates under enacted tax laws during the period.
Income Tax Reconciliation Prior Period Adjustments and Change in Enacted Tax Rate
Income Tax Reconciliation [Table]
Schedule reflecting the reconciliation of provision for income tax.
Initial contribution requirements by non-controlling interest in exchange for a ownership interest
Initial Contributions Required from Noncontrolling Interests, Total
The initial amount of capital funding of the VIE required to be contributed by the noncontrolling interest owners.
Taxes (other than income tax)
Accrual for Taxes Other than Income Taxes, Current
This element represents the investment in consolidated affiliates.
Investment in Affiliates
Investment in consolidated affiliates
Derivative instrument whose primary underlying risk is tied to isobutane prices.
Isobutane prices
Isobutane Contract [Member]
Keystone Acquisition
Represents information pertaining to the natural gas gathering and processing assets from Keystone Midstream Services, LLC that were acquired by the entity (collectively, the Keystone Acquisition).
Keystone Midstream Services LLC Acquisition [Member]
2002 LTIP Plan
LTIP 2002 Plan [Member]
2002 LTIP
This element represents the 2002 LTIP Plan.
This element represents the 2008 LTIP Plan, 2006 Hydrocarbon Stock Incentive Plan.
LTIP 2008 Plan and Hydrocarbon Plan 2006 [Member]
2008 LTIP and 2006 Hydrocarbon Plan
This element represents the 2008 LTIP Plan, 2006 Hydrocarbon Stock Incentive Plan and 1996 Hydrocarbon Stock Incentive Plan.
LTIP 2008 Plan Hydrocarbon Plan 2006 and Hydrocarbon Plan 1996 [Member]
2008 LTIP, 2006 Hydrocarbon Plan and 1996 Hydrocarbon Plan
LTIP 2008 Plan [Member]
This element represents the 2008 LTIP Plan.
2008 LTIP
Land, Building, Office Equipment and Other [Member]
Represents real estate held for productive use, long-lived structures used in the conduct of business, including office, production, storage, building improvements and distribution facilities and includes long-lived, depreciable assets not directly used in the production process for inventories or facilities.
Land, building, office equipment and other
Represents information pertaining to the natural gas processing and NGL pipeline assets located near Langley, Kentucky that were acquired by the entity (collectively, the Langley Acquisition).
Langley Acquisition
Langley Acquisition [Member]
This element represents the length of regulated pipeline.
Length of Regulated Pipeline
Length of FERC-regulated pipeline (in miles)
Accrued liabilities
Accrued Liabilities, Current [Abstract]
Schedule of information about significant unobservable inputs used in the valuation of Level 3 instruments
Tabular disclosure of quantitative information about the inputs used in the fair value measurement of assets and liabilities classified as Level 3 measurements. This disclosure may include, but is not limited to, the fair value of the asset and liabilities, valuation technique used to measure fair value, the inputs used to measure fair value, the ranges of the inputs, and the weighted averages of the inputs.
Fair Value Inputs Assets and Liabilities Quantitative Information [Table Text Block]
Liberty Segment
Liberty [Member]
This element represents the Liberty segment of the entity.
Aggregate contributions to VIE threshold
Represents the aggregate amount of capital contributed to the VIE from all members that must be achieved before the non-controlling interest owners have the option to contribute additional capital. Prior to reaching this threshold (and after the non-controlling interest owners have contributed $950 million) the reporting entity is required to contribute 100% of the capital requirements of the VIE.
Aggregate Contributions to VIE Threshold
Limited Partner Maximum Value Offering Limited Partner Units
Offering under program
Represents the maximum value of common units representing limited partnership interests that may be sold under a continuous equity offering program.
Accordion option to increase borrowing capacity under the Credit Facility
The maximum amount of the uncommitted accordion feature related to the entity's line of credit facility.
Line of Credit Facility, Accordion Feature, Maximum
Letters of credit maximum borrowing capacity
The maximum amount of borrowing capacity under a credit facility that is available as of the balance sheet date for the issuance of letters of credit.
Line of Credit Facility, Capacity Available for Letters of Credit
Amount available for borrowing based on financial covenant requirements
Represents the amount available for borrowing on a long term basis based on financial covenant requirements under line of credit facility.
Line of Credit Facility Remaining Borrowing Capacity on Long Term Basis Based on Financial Covenants Requirements
This element represents details pertaining to MarkWest Hydrocarbon, Inc. (also referred as "Corporation"), a wholly-owned taxable subsidiary of the entity.
Corporation
Mark West Hydrocarbon [Member]
Mark West Liberty Midstream [Member]
MarkWest Liberty Midstream is one of the variable interest entities for which the Partnership has been determined to be the primary beneficiary and is categorized as a consolidated Variable Interest Entity.
MarkWest Liberty Midstream
The minimum capital contributions (since inception) required of the non-controlling interest in order for it to receive a quarterly special allocation of income. The special allocation of income will be based only on amounts contributed in excess of this threshold. The quarterly allocation of income will cease after the quarter ended December 31, 2016.
Noncontrolling Owners Preference Threshold
Noncontrolling interest owners capital contribution preference threshold
Noncontrolling interest owners total funding commitment
This element represents the amount of the VIE's capital requirements that the non-controlling interest owners are obligated to fund under the joint venture agreement.
Minimum Capital Contributed by Noncontrolling Owners
Represents the minimum percentage of the aggregate contributions to the VIE to be made by the Partnership. If the Partnership's contributions are below the minimum percentage as of December 31, 2016, the non-controlling interest may require the Partnership to purchase additional membership interests from the non-controlling interest until such point as the Partnership achieves the minimum percentage.
Minimum Variable Interest Entity Ownership Percentage
Minimum percentage of ownership interest held in joint venture
Portion of operating loss (income) attributable to non-controlling interests
Portion of operating income (loss) attributable to non-controlling interests
Amount of operating income or loss attributable to the reportable segments for the period that is attributable to the non-controlling partners of the entity's less than wholly-owned subsidiaries.
Portion of operating income attributable to non-controlling interests
Minority Interest in Operating Income (Loss) Limited Partnerships
Percentage of non-controlling interest acquired by the Partnership
The equity interest of noncontrolling shareholders, partners or other equity holders that was acquired by the Partnership.
Minority Interest Ownership Percentage Acquired by Partnership
Non-controlling interest purchase consideration, cash paid
The total cost of purchase consideration for acquiring non-controlling interests paid in cash.
Minority Interest Purchase Consideration Cash Paid
Miscellaneous Income Net [Member]
The caption reflecting miscellaneous income, net, not reported elsewhere.
Miscellaneous income, net
Natural Gas Contract [Member]
Derivative instrument whose primary underlying risk is tied to natural gas prices.
Natural gas prices
Derivative instrument whose primary underlying risk is tied to the price of natural gas.
Embedded derivative in natural gas processing and purchase contract
Natural Gas [Member]
Natural Gas Midstream Costs Including Gain (Loss) on Price Risk Derivative Instruments Not Designated as Hedging Instruments Related to Product Cost
Purchased product costs
This element represents purchased product costs including the amount of gain (loss) recognized in earnings in the period from the increase (decrease) in the fair value of price risk derivatives related to purchase product costs not designated as hedging instruments.
Natural gasoline prices
Natural Gasoline Contract [Member]
Derivative instrument whose primary underlying risk is tied to natural gasoline prices.
Represents the net operating margin which is defined as segment revenue, excluding any derivative gain (loss) and adjusted for the non-cash impact of revenue deferrals related to certain agreements, less purchased product costs, excluding any derivative gain (loss).
Net, Operating Margin
Net operating margin
Proceeds from noncontrolling interest owners investment in a joint venture, net of transaction costs.
Noncontrolling Interest Increase from Contribution
Contributions from non-controlling interest
Nonmonetary Notional Amount of Embedded Derivative in Commodity Contract
Notional amount for embedded derivative in commodity contract (in Dth per day)
Aggregate notional amount of natural gas price risk derivatives embedded in commodity contracts with notional amount expressed in dekatherms per day.
Represents the period of arrears for payment of management fee revenues.
Period of Arrears for Payment of Management Fee Revenues
Period of arrears for payment of management fee revenues
Accrued Salaries, Current
Employee compensation
Other Equity Interests
Other Equity Interests Disclosure [Text Block]
Other Equity Interests
Represents the disclosure of other equity interest of the reporting entity.
Schedule of Other Equity Interests [Table]
Information pertaining to other equity interests of the entity.
Other Equity Interests [Line Items]
Other Equity Interests
Equity interest acquired (as a percent)
Represents the percentage of equity interest acquired by the entity.
Percentage Equity Interest Acquired
Percentage of Additional Equity Interest Acquired
Additional equity interest acquired (as a percent)
Represents the percentage of additional equity interest acquired by the entity.
Distribution Received from Subsidiary
Distributions received from Ohio Gathering
Represents the distributions received from subsidiary.
Ownership Interest Sold, Percentage
Sale of interest (as a percent)
Represents the percentage of ownership interest sold.
Line of Credit Bearing Interest of 4.5 Percent [Member]
Credit facility bearing interest of 4.5%
Represents the information pertaining to line of credit bearing interest of 4.5%.
Line of Credit Bearing Interest of 2.4 Percent [Member]
Credit facility bearing interest of 2.4%
Represents the information pertaining to line of credit bearing interest of 2.4%.
Revenue Adjustment for Unconsolidated Affiliate
Revenue adjustment for unconsolidated affiliate
Represents the amount of revenue adjustment for unconsolidated affiliate.
Accrued Liabilities, Current
Accrued liabilities
Total accrued liabilities
Accrued liabilities ($33,482 and $112,029, respectively)
Facility Expense and Purchase Product Cost Adjustments for Unconsolidated affiliate
Facility expense and purchase product cost adjustments for unconsolidated affiliate
Represents the amount of facility expense and purchase product cost adjustments for unconsolidated affiliate.
Portion of Operating Income (Loss) Attributable to Noncontrolling Interests of Unconsolidated Affiliate
Portion of operating loss attributable to non-controlling interests of an unconsolidated affiliate
Represents the portion of operating income (loss) attributable to non-controlling interests of an unconsolidated affiliate.
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Less: accumulated depreciation ($35,192 and $33,583, respectively)
Accumulated depreciation
Less: accumulated depreciation
Accumulated Amortization of Other Deferred Costs
Accumulated amortization, deferred contract cost
Accumulated amortization, deferred financing costs
Accumulated Amortization, Deferred Finance Costs
Useful life of intangible assets acquired
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life
Adjustments for Error Correction [Domain]
Excess tax benefits related to share-based compensation
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation
Adjustments to reconcile net income to net cash provided by operating activities:
Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Adjustments to reconcile net loss to net cash provided by operating activities:
Total compensation expense
Allocated Share-based Compensation Expense
Allowance for Doubtful Accounts
Allowance for Doubtful Accounts [Member]
Amortization of intangible assets
Amortization of intangible assets
Amortization of Intangible Assets
Amortization of deferred financing costs and debt discount (a component of interest expense)
Amortization of deferred financing costs and debt discount
Amortization of Financing Costs and Discounts
Anti-dilutive units (in units)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Asset Retirement Obligations
Asset Retirement Obligation Disclosure [Text Block]
Assets legally restricted for purposes of settling asset retirement obligations
Asset Retirement Obligation, Legally Restricted Assets, Fair Value
Accretion of asset retirement obligations
Accretion of asset retirement obligations
Accretion expense
Asset Retirement Obligation, Accretion Expense
Asset Retirement Obligations
Asset Retirement Obligations, Policy [Policy Text Block]
Asset Retirement Obligations
Beginning asset retirement obligation
Ending asset retirement obligation
Asset retirement obligation
Asset Retirement Obligation
Reconciliation of the changes in the asset retirement obligation
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Disposals
Asset Retirement Obligation, Liabilities Settled
Assets under construction
Asset under Construction [Member]
Liabilities incurred
Asset Retirement Obligation, Liabilities Incurred
Total assets
Total assets
Assets
Current assets:
Assets, Current [Abstract]
ASSETS
Assets [Abstract]
Total current assets
Total current assets
Assets, Current
Assets
Assets [Member]
Balance Sheet Location [Axis]
Balance Sheet Location [Domain]
Accounts payable
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable
Accounts payable
Accounts receivable
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables
Business Acquisition [Axis]
Other long-term liabilities
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other
Cash
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents
Business Combination
Business Acquisition [Line Items]
Business Acquisition, Acquiree [Domain]
Business Combination
Assets:
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]
Other short-term liabilities
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other
Liabilities:
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Inventory
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory
Business Combination
Business Combination Disclosure [Text Block]
Business Combinations
Business Combinations Policy [Policy Text Block]
Property, plant and equipment
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment
Intangible asset
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles
Purchase price allocation
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Total
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net
Counterparty Name [Axis]
Accrued property, plant and equipment
Capital Expenditures Incurred but Not yet Paid
Restricted Cash
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]
Cash and cash equivalents ($225,020 and $4,114, respectively)
Cash and cash equivalents at beginning of year
Cash and cash equivalents at end of period
Cash and cash equivalents
Certain cash and cash equivalents
Cash and Cash Equivalents, at Carrying Value
Cash and Cash Equivalents
Cash and Cash Equivalents, Policy [Policy Text Block]
Supplemental schedule of non-cash investing and financing activities:
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Supplemental Cash Flow Information
Cash Flow, Supplemental Disclosures [Text Block]
Equity
Class of Stock [Line Items]
Class of Stock [Domain]
Variable Interest Entity MarkWest Utica EMG
MarkWest Utica EMG
Co-venturer [Member]
Collaborative Arrangements
Collaborative Arrangement, Accounting Policy [Policy Text Block]
Commitments and Contingencies
Commitments and contingencies (Note 11)
Commitments and Contingencies.
Commitments and Contingencies
Commitments and Contingencies Disclosure [Text Block]
Commodity Derivative Contracts (net)
Commodity contracts
Commodity Contract [Member]
Employee Benefit Plan
Provision for income tax expense (benefit):
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred tax assets and liabilities resulting from temporary book-tax differences
Components of Deferred Tax Assets and Liabilities [Abstract]
Concentration Risk Type [Domain]
Concentration Risk Benchmark [Domain]
Concentration Risk Type [Axis]
Significant Customers and Concentration of Credit Risk
Concentration Risk Disclosure [Text Block]
Concentration Risk Benchmark [Axis]
Percentage of revenues from a significant customer
Concentration Risk, Percentage
Supplemental Condensed Consolidating Financial Information
Condensed Financial Statements [Text Block]
Condensed Consolidating Balance Sheets
Condensed Balance Sheet Statements, Captions [Line Items]
Condensed Income Statement [Table]
Condensed Cash Flow Statement [Table]
Condensed Consolidating Statements of Cash Flows
Condensed Cash Flow Statements, Captions [Line Items]
Condensed Consolidating Statements of Operations
Condensed Income Statements, Captions [Line Items]
Condensed Balance Sheet Statement [Table]
Consolidation Items [Domain]
Consolidating Adjustments
Consolidation, Eliminations [Member]
Decrease in common unit equity for 2011 acquisition of equity interest in MarkWest Liberty Midstream, net of $51,321 income tax benefit
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Purchase of Interest by Parent
Net (loss) income attributable to the Partnership and transfers to the non-controlling interest
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Change Due to Net Income Attributable to Parent and Effects of Changes, Net
Net income (loss) attributable to the Partnership and transfers to the non-controlling interest
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table Text Block]
Consolidation Items [Axis]
Construction in progress
Construction in Progress [Member]
Corporate, Non-Segment [Member]
Unallocated Segment
Costs and Expenses [Abstract]
Operating expenses:
Total operating expenses
Costs and Expenses
Total operating expenses
Total operating expenses before items not allocated to segments
Current income tax (benefit) expense:
State
Current State and Local Tax Expense (Benefit)
Current income tax (benefit) expense:
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal
Current Federal Tax Expense (Benefit)
Current
Current tax benefit
Total current
Current Income Tax Expense (Benefit)
Customer concentration
Customer Concentration Risk [Member]
Prepaid deposits with customers
Customer Advances and Deposits, Current
Basis of variable interest rate
Debt Instrument, Description of Variable Rate Basis
Long-Term Debt
Debt Instrument [Line Items]
Schedule of Long-term Debt Instruments [Table]
Aggregate principal amount
Debt Instrument, Face Amount
Spread on variable rate basis (as a percent)
Debt Instrument, Basis Spread on Variable Rate
Long-Term Debt
Debt redeemed
Debt Instrument, Repurchased Face Amount
Long-Term Debt
Debt Disclosure [Text Block]
Debt Instrument, Term
Term of debt instrument
Long-term debt, discounts
Debt Instrument, Unamortized Discount
Deferred Financing Costs
Debt, Policy [Policy Text Block]
Debt instrument, stated interest rate percentage
Debt Instrument, Interest Rate, Stated Percentage
Aggregate principal amount of debt issued
Applicable interest rate (as a percent)
Debt Instrument, Interest Rate at Period End
Long-term deferred tax liabilities
Deferred Tax Liabilities, Gross, Noncurrent
Deferred Contract Costs
Deferred Charges, Policy [Policy Text Block]
State tax credit
Deferred Tax Assets, State Taxes
Deferred financing costs, net of accumulated amortization of $28,220 and $25,083, respectively
Deferred Finance Costs, Noncurrent, Net
Federal
Deferred Federal Income Tax Expense (Benefit)
Deferred income tax expense (benefit):
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred
Deferred income taxes
Deferred tax expense
Total deferred
Deferred Income Tax Expense (Benefit)
State
Deferred State and Local Income Tax Expense (Benefit)
Current deferred tax assets
Deferred Tax Assets, Gross, Current
Deferred revenue
Deferred Revenue
Current subtotal
Deferred income taxes
Deferred Tax Assets, Net, Current
Long-term deferred tax assets
Deferred Tax Assets, Gross, Noncurrent
Capital loss carryforward
Deferred Tax Assets, Capital Loss Carryforwards
Phantom unit compensation
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost
Deferred income taxes
Current deferred tax assets
Deferred Tax Assets, Net of Valuation Allowance, Current
Long-term deferred tax assets:
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent Classification [Abstract]
Deferred income taxes
Net long-term deferred tax assets
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent
Net operating loss carryforward
Deferred Tax Assets, Operating Loss Carryforwards
Current deferred tax assets:
Deferred Tax Assets, Net of Valuation Allowance, Current Classification [Abstract]
State net operating loss carryforward
Deferred Tax Assets, Operating Loss Carryforwards, State and Local
Valuation allowance
Deferred Tax Assets, Valuation Allowance, Current
Valuation allowance
Deferred Tax Assets, Valuation Allowance, Noncurrent
Long-term subtotal
Deferred Tax Liabilities, Net, Noncurrent
Deferred income taxes
Net deferred tax liability
Deferred Tax Liabilities, Net
Deferred income taxes
Deferred Tax Liabilities, Net, Current
Income taxes
Deferred Tax Liabilities, Gross [Abstract]
Employer matching contribution expense related to defined contribution benefit plan
Defined Contribution Plan, Cost Recognized
Depreciation
Depreciation
Depreciation
Depreciation and amortization
Depreciation, Depletion and Amortization, Nonproduction
Fair value of derivative instruments
Fair value of derivative liabilities - long-term liabilities
Derivative Liability, Noncurrent
Total carrying value of derivative liabilities in Condensed Consolidated Balance Sheet
Total derivative liabilities
Derivative Liability
Liabilities
Fair value of derivative instruments
Derivative Asset, Noncurrent
Gross Amounts Not Offset in the Consolidated Balance Sheet
Derivative Asset, Fair Value, Gross Liability
Derivative financial instruments
Derivative [Line Items]
Gross Amounts Not Offset in the Consolidated Balance Sheet
Derivative Liability, Fair Value, Gross Asset
Total (loss) gain
Unrealized gain (loss)
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net
Derivative Instrument [Axis]
Derivative [Table]
Derivative Financial Instruments
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Derivative Financial Instruments
Fair value of derivative instruments
Fair value of derivative instruments - current assets
Derivative Asset, Current
Total carrying value of derivative assets in Condensed Consolidated Balance Sheet
Fair value of derivatives
Total derivative assets
Derivative Asset
Assets
Fair value of derivative instruments
Fair value of derivative instruments - current liabilities
Derivative Liability, Current
Net Amount
Derivative Liability, Fair Value, Amount Not Offset Against Collateral
Gross Amounts of Assets in the Consolidated Balance Sheet
Derivative Asset, Fair Value, Gross Asset
Net Amount
Derivative Asset, Fair Value, Amount Not Offset Against Collateral
Gross Amounts of Liabilities in the Consolidated Balance Sheet
Derivative Liability, Fair Value, Gross Liability
Derivative (loss) gain not allocated to segments
Derivative, Gain (Loss) on Derivative, Net
Derivative contracts not designated as hedging instruments
Derivative, Fair Value, Net [Abstract]
Derivative Contract [Domain]
Impact of the Partnership's derivative instruments on Condensed Consolidated Statements of Operations
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) [Table]
Derivative Instruments
Derivatives, Policy [Policy Text Block]
Financial statement impact of derivative contracts
Derivatives, Fair Value [Line Items]
Incentive Compensation Plans
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
Supplemental Condensed Consolidating Financial Information
Incentive Compensation Plans
SMR Transaction
Disposal Groups, Including Discontinued Operations, Name [Domain]
Divestiture
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]
Distribution per common unit (in dollars per unit)
Distribution Made to Limited Partner, Distributions Declared, Per Unit
Record Date
Distribution Made to Limited Partner, Date of Record
Payment Date
Distribution Made to Limited Partner, Distribution Date
Declaration Date
Distribution Made to Limited Partner, Declaration Date
Distributions of Available Cash
Distributions Made to Members or Limited Partners [Abstract]
Cash distribution declared per common unit (in dollars per unit)
Distributions Per Limited Partnership Unit Outstanding, Basic
Schedule of distributions of available cash and range of unit prices
Distributions Made to Limited Partner, by Distribution [Table Text Block]
Long-term intercompany financing payable
Due to Affiliate, Noncurrent
Intercompany payables
Due to Affiliate, Current
Intercompany receivables
Due from Affiliate, Current
Intercompany notes receivable
Due from Affiliate, Noncurrent
Net income attributable to the Partnership's common unitholders per common unit:
Net (loss) income attributable to the Partnership's unitholders
Earnings Per Unit [Abstract]
Earnings Per Common Unit
Earnings Per Share [Text Block]
Earnings (Loss) Per Unit
Earnings Per Share, Policy [Policy Text Block]
Earnings Per Common Unit
Federal statutory income tax rate (as a percent)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Estimated fair value of embedded derivative contract asset
Embedded Derivative, Fair Value of Embedded Derivative Asset
Embedded Derivatives in Commodity Contracts (net)
Embedded Derivatives in Commodity contracts
Embedded Derivative Financial Instruments [Member]
Recorded value of embedded derivative contract liability
Embedded Derivative, Fair Value of Embedded Derivative Liability
Total compensation expense not yet recognized
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized
Unrecognized compensation costs on unvested awards, weighted average period of recognition
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition
NGLs
Energy Related Inventory, Natural Gas Liquids
Significant Customers and Concentration of Credit Risk
Revenue, Major Customer [Line Items]
Revenues from a significant customer
Entity-Wide Revenue, Major Customer, Amount (Deprecated 2013-01-31)
Equity
Investment in unconsolidated affiliates
Investment in unconsolidated affiliates ($558,603 and $0, respectively)
Equity Method Investments
Impairment of investment
Equity Method Investment, Other than Temporary Impairment
Gain on sale of unconsolidated affiliate
Earnings (loss) from unconsolidated affiliate
Gain on sale of unconsolidated affiliate
Distributions from unconsolidated affiliates
Proceeds from Equity Method Investment, Dividends or Distributions
Investment in Unconsolidated Affiliates
Equity Method Investments, Policy [Policy Text Block]
Adjustments for Error Corrections [Axis]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Quarterly Results of Operations (Unaudited)
Amount of tax deductions related to equity compensation in excess of compensation
Excess Tax Benefit from Share-based Compensation, Operating Activities
Excess tax benefits related to share-based compensation
Excess Tax Benefit from Share-based Compensation, Financing Activities
Amount of debt repurchased
Extinguishment of Debt, Amount
Facility expenses
Facility Costs
Measurement Frequency [Axis]
Settlements
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements
Fair value at beginning of period
Fair value at end of period
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs
Changes in Level 3 Fair Value Measurements
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value Measurements, Recurring and Nonrecurring [Table]
Derivative assets and liabilities classified by the Partnership within Level 3 of the valuation hierarchy
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Schedule of changes in Level 3 fair value measurements
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Fair Value, Hierarchy [Axis]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Recurring
Fair Value, Measurements, Recurring [Member]
Total gain (loss) (realized and unrealized) included in earnings
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings
Fair Value, Measurement Frequency [Domain]
Unobservable inputs used in the valuation of Level 3 instruments of Assets
Fair Value Inputs, Quantitative Information [Abstract]
Fair Value Measurement, Policy [Policy Text Block]
Fair Value Measurement
Derivative instruments carried at fair value in Condensed Consolidated Balance Sheet
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value
Fair Value Hierarchy [Domain]
Fair Value of Financial Instruments
Fair Value of Financial Instruments, Policy [Policy Text Block]
Fair Value
Fair Value Disclosures [Text Block]
Schedule of the carrying value and related fair value of financial instruments that are not recorded in the financial statements at fair value
Fair Value, by Balance Sheet Grouping [Table Text Block]
Significant unobservable inputs (Level 3)
Fair Value, Inputs, Level 3 [Member]
Significant other observable inputs (Level 2)
Fair Value, Inputs, Level 2 [Member]
Carrying value and related fair value of financial instruments.
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]
Financial Instrument [Axis]
Useful Life
Finite-Lived Intangible Asset, Useful Life
Finite-Lived Intangible Assets, Gross
Gross
2018
Finite-Lived Intangible Assets, Amortization Expense, Year Five
Intangible assets
Finite-Lived Intangible Assets [Line Items]
2016
Finite-Lived Intangible Assets, Amortization Expense, Year Three
Estimated amortization expense
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Accumulated amortization, intangibles
Accumulated Amortization
Finite-Lived Intangible Assets, Accumulated Amortization
Intangibles, net of accumulated amortization of $317,377 and $285,732, respectively
Total estimated amortization expense
Intangibles, net of accumulated amortization
Finite-Lived Intangible Assets, Net
Thereafter
Finite-Lived Intangible Assets, Amortization Expense, after Year Five
2014
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months
2017
Finite-Lived Intangible Assets, Amortization Expense, Year Four
2015
Finite-Lived Intangible Assets, Amortization Expense, Year Two
Loss (gain) on disposal of property, plant and equipment
Gain on disposal of property, plant and equipment
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property
(Gain) loss on disposal of property, plant and equipment
Derivative gain related to interest expense
Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments
Pre-tax loss on repurchase of debt
Gain (Loss) on Repurchase of Debt Instrument
Loss on redemption of debt
Loss on redemption of debt
Gains (Losses) on Extinguishment of Debt
Revenue
Segment revenue
Gas Gathering, Transportation, Marketing and Processing Revenue
Intangibles
Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block]
Goodwill
Goodwill
Balance at the end of the period
Goodwill.
Goodwill and Intangible Assets
Goodwill and Intangible Assets Disclosure [Text Block]
Goodwill
Goodwill [Line Items]
Cumulative impairment
Goodwill, Impaired, Accumulated Impairment Loss
Changes in goodwill
Goodwill [Roll Forward]
Gross goodwill end of the period
Gross goodwill beginning of the period
Goodwill, Gross
Goodwill and Intangible Assets
Acquisition
Goodwill, Acquired During Period
Goodwill
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]
Guarantor Subsidiaries
Guarantor Subsidiaries [Member]
Hedging Designation [Axis]
Hedging Designation [Domain]
Eliminations
Intersegment Eliminations [Member]
Elimination
Impairment of Long-Lived Assets
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]
Equity in loss (earnings) from unconsolidated affiliates
Equity in (loss) earnings from unconsolidated affiliates
Income (Loss) from Equity Method Investments
Equity in (loss) earnings from unconsolidated affiliates
Condensed Consolidated Statements of Operations
Income Statement Location [Axis]
Income Taxes
Income Tax Authority [Domain]
Disposal Group Name [Axis]
Divestiture
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net income (loss) attributable and transfers to the non-controlling interest
Summary of net income (loss) attributable to the entity and transfers to the non-controlling interest
Income (Loss), Including Portion Attributable to Noncontrolling Interest [Abstract]
Income Tax Authority [Axis]
Income Taxes
Income Tax Disclosure [Text Block]
Income Statement Location [Domain]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Table]
Components of the provision for income tax expense (benefit)
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Income Tax Expense (Benefit)
Total provision for income tax
Provision for income tax (benefit) expense
Current year change in valuation allowance
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount
Federal and state tax rate change
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount
Cash received for income taxes, net
Income Taxes Paid, Net
Permanent items
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount
Federal income tax at statutory rate
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount
Income Taxes
Income Tax, Policy [Policy Text Block]
State income taxes, net of federal benefit
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount
Other
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount
Redeemable Non-controlling Interest (Temporary Equity)
Increase (Decrease) in Temporary Equity [Roll Forward]
Other current assets
Increase (Decrease) in Other Current Assets
Receivables from unconsolidated affiliate
Increase (Decrease) in Accounts Receivable, Related Parties
Accounts payable and accrued liabilities
Increase (Decrease) in Accounts Payable and Accrued Liabilities
Increase (Decrease) in Equity
Increase (Decrease) in Partners' Capital [Roll Forward]
Intercompany advances, net
Increase (Decrease) in Due from Affiliates, Current
Other long-term liabilities
Increase (Decrease) in Other Operating Liabilities
Changes in operating assets and liabilities, net of deconsolidation:
Increase (Decrease) in Operating Capital [Abstract]
Inventories
Increase (Decrease) in Inventories
Other long-term assets
Increase (Decrease) in Other Operating Assets
Receivables
Increase (Decrease) in Receivables
Restricted cash
Increase (Decrease) in Restricted Cash
Net
Intangible Assets, Net (Excluding Goodwill)
Interest
Interest Payable, Current
Interest expense
Interest Expense
Interest capitalized on construction in progress
Interest Paid, Capitalized
Interest rate contracts
Interest Rate Derivatives [Abstract]
Cash paid for interest, net of amounts capitalized
Interest Paid, Net
Derivative gain related to interest expense
Interest Expense [Member]
Federal
Internal Revenue Service (IRS) [Member]
Inventories ($6,838 and $2,553, respectively)
Total inventories
Inventory, Net
Inventories
Inventories
Inventory Disclosure [Text Block]
Inventories
Inventory, Policy [Policy Text Block]
Inventories
Interest income
Interest income
Investment Income, Interest
Issuance of debt
London Interbank Offered Rate (LIBOR) [Member]
One month LIBOR
Letters of credit outstanding amount
Letters of Credit Outstanding, Amount
Long-term Debt, Type [Axis]
Long-term Debt, Type [Domain]
Lease Operations
Total current liabilities
Total current liabilities
Liabilities, Current
Total liabilities and equity
Total liabilities and equity
Liabilities and Equity
LIABILITIES
Liabilities [Abstract]
Current liabilities:
Liabilities, Current [Abstract]
Total liabilities
LIABILITIES AND EQUITY
Liabilities and Equity [Abstract]
Liability for Uncertain Tax Positions, Current
Liability for uncertain tax positions
Liabilities
Liability [Member]
Common units outstanding (in units)
Balance (in units)
Balance (in units)
Limited Partners' Capital Account, Units Outstanding
Limited partner
Limited Partner [Member]
Common units issued (in units)
Limited Partners' Capital Account, Units Issued
Common units or Class B units
Common Units
Limited Partners' Capital Account
Credit facility current lending capacity
Line of Credit Facility, Maximum Borrowing Capacity
Borrowings outstanding
Line of Credit Facility, Amount Outstanding
Credit Facility
Line of Credit [Member]
Credit facility remaining borrowing capacity
Line of Credit Facility, Remaining Borrowing Capacity
Receivables
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
Estimate aggregate fair value of debt
Fair value of long-term debt
Long-term Debt, Fair Value
2015
Long-term Debt, Maturities, Repayments of Principal in Year Two
2017
Long-term Debt, Maturities, Repayments of Principal in Year Four
2018
Long-term Debt, Maturities, Repayments of Principal in Year Five
2016
Long-term Debt, Maturities, Repayments of Principal in Year Three
Long-term Debt, Fiscal Year Maturity [Abstract]
Minimum principal payments during the next five years
Long-term debt, net of discounts of $6,563 and $6,929, respectively
Long-term debt, net of discounts
Carrying value of long-term debt
Long-term Debt, Excluding Current Maturities
2014
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months
Commitments and Contingencies
Major Property Class [Domain]
Major Property Class [Axis]
Customer [Axis]
Maximum
Maximum [Member]
Minimum
Minimum [Member]
Percentage of ownership interest held by the parent
Noncontrolling Interest, Ownership Percentage by Parent
Non-controlling interest in consolidated subsidiaries
Carrying value of non-controlling interest acquired
Stockholders' Equity Attributable to Noncontrolling Interest
Percentage of ownership interest held by non-controlling interest
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners
Activity in valuation and qualifying accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Customer [Domain]
Processing plants
Natural Gas Processing Plant [Member]
Natural gas processing facilities
Purchased product costs
Natural Gas Midstream Costs
Cash flows from financing activities:
Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract]
Cash flows from operating activities:
Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract]
Net increase in cash and cash equivalents
Net Cash Provided by (Used in) Continuing Operations
Net increase in cash and cash equivalents
Income (loss) available for common unitholders - basic
Net Income (Loss) Available to Common Stockholders, Basic
Net cash provided by operating activities
Net cash (used in) provided by operating activities
Net Cash Provided by (Used in) Operating Activities, Continuing Operations
Net (loss) income attributable to the Partnership's unitholders
Net Income (Loss) Allocated to Limited Partners
Income (loss) available for common unitholders - diluted
Net Income (Loss) Available to Common Stockholders, Diluted
Diluted (in dollars per unit)
Net Income (Loss), Net of Tax, Per Outstanding Limited Partnership Unit, Diluted
Net cash flows provided by financing activities
Net Cash Provided by (Used in) Financing Activities, Continuing Operations
Net cash flows used in investing activities
Net Cash Provided by (Used in) Investing Activities, Continuing Operations
Basic (in dollars per unit)
Net Income (Loss), Per Outstanding Limited Partnership Unit, Basic, Net of Tax
Cash flows from investing activities:
Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract]
Net income attributable to the Partnership's unitholders
Net income attributable to the Partnership's unitholders
Net Income (Loss) Attributable to Parent
Net loss attributable to the Partnership's unitholders
Net income attributable to non-controlling interest
Net Income (Loss) Attributable to Noncontrolling Interest
Net (income) loss attributable to non-controlling interest
Recent Accounting Pronouncements
Recent Accounting Pronouncements
New Accounting Pronouncements, Policy [Policy Text Block]
Non-Guarantor Subsidiaries
Non-Guarantor Subsidiaries [Member]
Noncash or Part Noncash Divestiture, Name [Domain]
Unique Name [Axis]
Divestitures
Noncash or Part Noncash Divestitures [Line Items]
Noncash or Part Noncash Divestitures [Table]
Other expense, net
Nonoperating Income (Expense)
Other income (expense):
Nonoperating Income (Expense) [Abstract]
Number of interest rate contracts outstanding
Number of Interest Rate Derivatives Held
Number of acquisitions made
Number of Businesses Acquired
Non-controlling Interest
Noncontrolling Interest [Member]
Elimination of non-controlling interest from deconsolidation of a subsidiary
Noncontrolling Interest, Decrease from Deconsolidation
Derivative instruments not designated as hedging instruments
Not Designated as Hedging Instrument [Member]
Liabilities
Offsetting Derivative Liabilities [Abstract]
Assets
Offsetting Derivative Assets [Abstract]
Open Tax Year
Oldest open tax year
2019 and thereafter
Operating Leases, Future Minimum Payments, Due Thereafter
Minimum future payments under non-cancellable operating lease agreements and long-term propane storage agreement
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2017
Operating Leases, Future Minimum Payments, Due in Four Years
Lease Operations
Operating Leases of Lessor Disclosure [Text Block]
Total
Operating Leases, Future Minimum Payments Receivable
2018
Operating Leases, Future Minimum Payments, Due in Five Years
Revenue from lease arrangements
Operating Leases, Income Statement, Lease Revenue
2017
Operating Leases, Future Minimum Payments Receivable, in Four Years
2016
Operating Leases, Future Minimum Payments, Due in Three Years
Annual expense under non-cancellable operating lease agreements and long-term propane storage agreement
Operating Leases, Rent Expense, Net
2014
Operating Leases, Future Minimum Payments Due, Next Twelve Months
2015
Operating Leases, Future Minimum Payments Receivable, in Two Years
2019 and thereafter
Operating Leases, Future Minimum Payments Receivable, Thereafter
Income from operations
Income from operations
(Loss) income from operations
Operating Income (Loss)
Operating Leases, Future Minimum Payments Receivable, Remainder of Fiscal Year
2014 (Remainder of the year)
2014
Operating Leases, Future Minimum Payments Receivable, Current
2018
Operating Leases, Future Minimum Payments Receivable, in Five Years
Minimum future rentals on the non-cancellable operating leases
Operating Leases, Future Minimum Payments Receivable [Abstract]
Total segments
Operating Segments [Member]
2015
Operating Leases, Future Minimum Payments, Due in Two Years
Total
Operating Leases, Future Minimum Payments Due
Net operating loss carryforwards
Operating Loss Carryforwards
2016
Operating Leases, Future Minimum Payments Receivable, in Three Years
Organization and Basis of Presentation
Organization and Basis of Presentation
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Other long-term assets ($5 and $658, respectively)
Other long-term assets
Other Assets, Noncurrent
Other
Other Noncash Income (Expense)
Other
Other Assets
Other
Other Sundry Liabilities, Noncurrent
Other current assets ($4,475 and $5,527, respectively)
Other current assets
Other Assets, Current
Issuance of Class B units for acquisition of non-controlling interest
Other Significant Noncash Transaction, Value of Consideration Given
Amortization of deferred contract cost
Amortization of Other Deferred Charges
Other long-term assets:
Other Assets, Noncurrent [Abstract]
Other operating expenses (income)
Other Cost and Expense, Operating
Deferred contract cost, ($0 and $6,591, respectively), net of accumulated amortization of $3,042 and $2,886 ($0), respectively
Other Deferred Costs, Net
Deferred contract cost
Spare parts, materials and supplies
Other Inventories, Spare Parts, Gross
Miscellaneous income, net
Other Nonoperating Income (Expense)
Other long-term liabilities ($79 and $73, respectively)
Other long-term liabilities
Total other long-term liabilities
Other Liabilities, Noncurrent
Other current liabilities
Other Liabilities, Current
Other long-term liabilities
Other Liabilities, Noncurrent [Abstract]
Other
Other Accrued Liabilities, Current
Other
Other Receivables
Prime rate
Prime Rate [Member]
Parent
Parent Company [Member]
Less: Income allocable to phantom units
Participating Securities, Distributed and Undistributed Earnings
Partner Type of Partners' Capital Account, Name [Domain]
Partner Capital Components [Axis]
Partner Type [Axis]
Partner Capital Components [Domain]
Equity Offerings
Partners' Capital Account, Units, Sale of Units [Abstract]
Issuance of Class B units
Non-controlling interest purchase consideration, value Class B units
Partners' Capital Account, Acquisitions
Other
Partners' Capital, Other
Conversion of Class B units to common units (in units)
Partners' Capital Account, Units, Converted
Share-based compensation activity (in units)
Partners' Capital Account, Units, Unit-based Compensation
Conversion of Class B units to common units
Partners' Capital Account, Exchanges and Conversions
Distributions paid
Partners' Capital Account, Distributions
Share-based compensation activity
Partners' Capital Account, Unit-based Compensation
Increase (Decrease) in Partners' Capital
Equity
Partners' Capital Notes Disclosure [Text Block]
Partners' Capital Account, Units, Period Increase (Decrease)
Issuance of Class B units (in units)
Issuance of Class B units for acquisition of non-controlling interest
Non-controlling interest purchase consideration, shares
Partners' Capital Account, Units, Acquisitions
Issuance of units in public offerings, net of offering costs (in units)
Partners' Capital Account, Units, Sold in Public Offering
Aggregate common units sold (in units)
Issuance of units in public offerings, net of offering costs
Partners' Capital Account, Sale of Units
Equity:
Partners' Capital, Including Portion Attributable to Noncontrolling Interest [Abstract]
Partnership interest
Partnership Interest [Member]
Accrued Liabilities and Other Long-Term Liabilities
Payments for debt issuance costs, deferred financing costs and registration costs
Deferred financing costs
Payments for debt issue costs and deferred financing costs
Payment of Financing and Stock Issuance Costs
Cash paid for taxes related to net settlement of share-based payment awards
Cash paid for taxes related to vesting of share-based payment awards related to tax withholding for share-based compensation
Payments Related to Tax Withholding for Share-based Compensation
Payment of distributions to non-controlling interest
Payments of Ordinary Dividends, Noncontrolling Interest
Equity investments in consolidated affiliates
Investment in unconsolidated affiliate
Payments to Acquire Equity Method Investments
Acquisition of business, net of cash acquired
Payments to Acquire Businesses, Net of Cash Acquired
Cash purchase price
Payments to Acquire Businesses, Gross
Payment of distributions to common unitholders
Payments of Ordinary Dividends, Common Stock
Acquisition of non-controlling interest, including transaction costs
Payments to Acquire Interest in Subsidiaries and Affiliates
Capital expenditures
Capital expenditures
Payments to Acquire Property, Plant, and Equipment
Employee Benefit Plan
Pension and Other Postretirement Benefits Disclosure [Text Block]
Crude oil pipelines
Pipelines [Member]
Plan Name [Domain]
Plan Name [Axis]
Proceeds from issuance of senior notes, net of underwriting fees and the other expenses of the offering
Proceeds from Debt, Net of Issuance Costs
Proceeds from issuance of phantom units
Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Excluding Stock Options
Contributions from Parent and affiliates
Proceeds from Contributions from Parent
Contributions from non-controlling interest
Proceeds from Noncontrolling Interests
Contribution from non-controlling interest
Proceeds from Credit facility
Proceeds from Lines of Credit
Proceeds from Credit Facility
Proceeds from public equity offerings, net
Proceeds from public equity offerings, net
Proceeds from Issuance of Common Limited Partners Units
Net proceeds from public offering after deducting underwriters fees and other third-party expenses
Cash investment received
Proceeds from Partnership Contribution
Proceeds from long-term debt
Proceeds from Issuance of Long-term Debt
Proceeds from divestiture
Proceeds from Divestiture of Businesses, Net of Cash Divested
Proceeds from disposal of property, plant and equipment
Proceeds from Sale of Property, Plant, and Equipment
Proceeds from sale of assets under construction
Proceeds from sale of equity interest in unconsolidated affiliate
Proceeds from Sale of Equity Method Investments
Net income
Net income
Net loss
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Estimated useful lives of assets
Property, Plant and Equipment, Useful Life
Property Subject to or Available for Operating Lease, by Major Property Class [Table]
Property, plant and equipment ($1,115,941 and $1,655,789, respectively)
Property, plant and equipment
Property, Plant and Equipment, Gross
Property, Plant and Equipment
Property, Plant and Equipment, Policy [Policy Text Block]
Total property, plant and equipment, net
Total property, plant and equipment, net
Property, plant and equipment, net of accumulated depreciation of $20,195 and $14,926, respectively
Property, Plant and Equipment, Net
Property, Plant and Equipment
Property, Plant and Equipment
Property, Plant and Equipment, Type [Domain]
Property, Plant and Equipment, Type [Axis]
Property, Plant and Equipment
Property, Plant and Equipment Disclosure [Text Block]
Investment in assets held for operating lease by major classes
Property Subject to or Available for Operating Lease [Line Items]
Property, plant and equipment
Property, Plant and Equipment [Line Items]
Less: accumulated depreciation
Property Subject to or Available for Operating Lease, Accumulated Depreciation
Property, plant and equipment
Property Subject to or Available for Operating Lease, Gross
Total property, plant and equipment, net
Property Subject to or Available for Operating Lease, Net
Quarterly Results of Operations (Unaudited)
Quarterly Financial Information [Text Block]
Quarterly Results of Operations (Unaudited)
Reportable legal entities
Reportable Legal Entities [Member]
Reportable entities
Range [Axis]
Range [Domain]
Receivables
Receivables, net ($6,678 and $5,346, respectively)
Total receivables
Receivables, net
Receivables, Net, Current
Reconciliation of Assets from Segment to Consolidated [Table]
Schedule of assets by segment
Reconciliation of Assets from Segment to Consolidated [Table Text Block]
Redeemable non-controlling interest (Note 3)
Redeemable Noncontrolling Interest, Equity, Carrying Amount
Balance
Balance
Redeemable non-controlling interest
Related Party [Axis]
Related Party [Domain]
Repurchase of debt
Payments of Credit Facility
Repayments of Lines of Credit
Payments Credit Facility
Payments of long-term debt
Repayments of Long-term Debt
Counterparty Name [Domain]
As restated
Restatement Adjustment [Member]
Restricted Cash
Restricted Cash and Investments [Abstract]
Restricted cash
Restricted cash
Restricted Cash and Cash Equivalents, Current
Restricted cash
Restricted Cash and Cash Equivalents, Noncurrent
Revenue Recognition
Revenue Recognition, Policy [Policy Text Block]
Revenue From Related Parties
Revenue from unconsolidated affiliates
Management Fees revenue
Total revenue
Total revenue
Revenues
Revenues
Revenue:
Revenues [Abstract]
Significant Customers and Concentration of Credit Risk
Total intrinsic value of phantom units vested during the period
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested
Schedule of estimated future amortization expense related to the intangible assets
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
Derivative revenue
Sales [Member]
Revenue: Derivative (loss) gain
Revenues
Sales Revenue, Goods, Net [Member]
As previously reported
Scenario, Previously Reported [Member]
Scenario, Unspecified [Domain]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]
Summary of preliminary purchase price allocation
Schedule of derivative instruments carried at fair value
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Schedule of reconciliation of the changes in the asset retirement obligation
Schedule of Change in Asset Retirement Obligation [Table Text Block]
Schedule of supplemental cash flow information
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]
Summary of components of the provision for income tax expense (benefit)
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Schedule of condensed consolidating balance sheets
Condensed Balance Sheet [Table Text Block]
Schedule of components of inventories
Schedule of Inventory, Current [Table Text Block]
Schedule of income tax rate reconciliation
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Schedule of deferred tax assets and liabilities resulting from temporary book-tax differences
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Schedule of notional amounts of derivative contracts
Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]
Schedule of accrued liabilities
Schedule of Accrued Liabilities [Table Text Block]
Phantom unit activity
Schedule of Share-based Compensation, Activity [Table Text Block]
Schedule of derivative contracts not designated as hedging instruments and their balance sheet location
Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]
Schedule of minimum future payments under the non-cancellable operating lease agreements and long-term propane storage agreement
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
Summary of quarterly results of operations
Schedule of Quarterly Financial Information [Table Text Block]
Schedule of computation of basic and diluted net income per common unit
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Schedule of condensed consolidating statements of operations
Condensed Income Statement [Table Text Block]
Schedule of condensed consolidating statements of cash flows
Condensed Cash Flow Statement [Table Text Block]
Schedule of intangible assets
Schedule of Finite-Lived Intangible Assets [Table Text Block]
Schedule of compensation expense recorded for share-based pay arrangements
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]
Schedule of Business Acquisitions, by Acquisition [Table]
Schedule of Long-term Debt Instruments [Table Text Block]
Schedule of long-term debt
Schedule of Revenue by Major Customers, by Reporting Segments [Table]
Schedule of Error Corrections and Prior Period Adjustment Restatement [Table]
Schedule of consolidation error and impairment to statement of operations
Schedule of Error Corrections and Prior Period Adjustments [Table Text Block]
Schedule of Fair Value, Off-balance Sheet Risks [Table]
Schedule of gross amount of goodwill acquired and the cumulative impairment loss recognized
Schedule of Goodwill [Table Text Block]
Schedule of acquired intangible assets
Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]
Schedule of Goodwill [Table]
Schedule of operating income and capital expenditures of reportable segments
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Schedule of Property Subject to or Available for Operating Lease [Table Text Block]
Schedule of Partnership investment in assets held for operating lease
Property, Plant and Equipment [Table]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Schedule of Segment Reporting Information, by Segment [Table]
Valuation and Qualifying Accounts
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]
Schedule of Stock by Class [Table]
Schedule of condensed consolidated balance sheet attributable to VIEs
Summary of receivables
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Schedule of Variable Interest Entities [Table]
Segment Assets
Segment Reporting, Asset Reconciling Item [Line Items]
Segment information
Segment Reporting Information [Line Items]
Segments [Domain]
Segment Information
Segment Information
Segment Reporting Disclosure [Text Block]
Geographical [Domain]
Selling, general and administrative expenses
Selling, general and administrative expenses
Selling, General and Administrative Expense
Senior Notes
Senior Notes [Member]
Acquisition
Weighted-average Grant-date Fair Value
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Unit activity
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Granted (in units)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period
Granted (in dollars per unit)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Unvested at the beginning of the period (in units)
Unvested at the end of the period (in units)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Vested (in units)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period
Phantom unit compensation expense
Share-based Compensation
Vesting period of share-based awards
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period
Incentive Compensation Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested at the beginning of the period (in dollars per unit)
Unvested at the end of the period (in dollars per unit)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Forfeited (in dollars per unit)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Forfeited (in units)
Common Unit Price (in dollars per share)
Share Price
Total fair value of phantom units vested during the period
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value
Vested (in dollars per unit)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Other Award Information
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Common units provided for issuance to employees and affiliates as share-based payment awards
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized
Incentive Compensation Plans
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]
Equity Award [Domain]
Significant Accounting Policies [Text Block]
Summary of Significant Accounting Policies
State and Local Jurisdiction [Member]
State
Scenario [Axis]
Statement [Table]
Statement
Statement [Line Items]
Supplemental Cash Flow Information
Condensed Consolidated Statements of Changes in Equity
Geographical [Axis]
Condensed Consolidated Statements of Cash Flows
Condensed Consolidated Balance Sheets
Segments [Axis]
Class of Stock [Axis]
Issuance of common units for vesting of share-based payment awards
Stock Issued
Total equity
Balance
Balance
Total equity
Total equity
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
Subsequent Events
Subsequent Events [Text Block]
Subsequent Events
Subsequent Event [Table]
Subsequent events
Subsequent Event [Line Items]
Subsequent events
Subsequent Event [Member]
Subsequent Event Type [Domain]
Subsequent Event Type [Axis]
Financial Statement Impact of Derivative Contracts
Summary of Derivative Instruments Impact on Results of Operations [Abstract]
Reconciliation of the Corporation's accrual for uncertain tax positions
Summary of Income Tax Contingencies [Table Text Block]
Supplemental disclosures of cash flow information:
Supplemental Cash Flow Information
Financial Instruments [Domain]
Unrealized loss (gain) on derivative instruments
Unrealized (loss) gain
Unrealized Gain (Loss) on Derivatives
Use of Estimates
Use of Estimates, Policy [Policy Text Block]
Valuation and Qualifying Accounts Disclosure [Table]
Valuation Allowances and Reserves [Domain]
Charged to costs and expenses
Valuation Allowances and Reserves, Charged to Cost and Expense
Balance at beginning of period
Balance at end of period
Valuation Allowances and Reserves, Balance
Deferred Tax Asset Valuation Allowance
Valuation Allowance of Deferred Tax Assets [Member]
Other charges
Valuation Allowances and Reserves, Charged to Other Accounts
Valuation and Qualifying Accounts
Valuation and qualifying accounts
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation Allowances and Reserves Type [Axis]
Variable Rate [Domain]
Variable Rate [Axis]
Total Variable Interest Entities
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entities
Balance sheet
Variable Interest Entity [Line Items]
Percentage of ownership interest held in joint venture
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage
Potential common shares (Class B and phantom units)
Weighted Average Number Diluted Shares Outstanding Adjustment
Diluted (in units)
Weighted average common units outstanding-diluted (in units)
Weighted Average Limited Partnership Units Outstanding, Diluted
Basic (in units)
Weighted average common units outstanding-basic (in units)
Weighted Average Limited Partnership Units Outstanding, Basic
Write off of deferred financing costs
Write off of Deferred Debt Issuance Cost