Exercise of ECP Warrants Proceeds from Warrant Exercises Extinguishment of Debt [Line Items] Extinguishment of Debt [Line Items] Supplemental cash flow information: Supplemental Cash Flow Information [Abstract] Customer Customer [Domain] Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Fair Value Hierarchy and NAV Fair Value Hierarchy and NAV [Domain] Net income (loss) attributable to Summit Midstream Partners, LP Net Income (Loss) Attributable to Parent Noncurrent accrued environmental remediation Accrued Environmental Loss Contingencies, Noncurrent Consolidated Entities Consolidated Entities [Axis] Common units, issued (in shares) Common Unit, Issued Operating Operating Lease, Right-of-Use Asset Common units issued for SMLP LTIP, net (in shares) Partners' Capital Account, Unit-based Payment Arrangement, Number of Units 2022 Senior Notes Senior Notes Due August Twenty Twenty Two [Member] Senior notes due August twenty twenty two. Double E Double E Company L L C [Member] Double E company. Debt Instrument, Covenant, Excess Cash Flow Offer To Purchase, Basis Point Increase, Period Two Debt Instrument, Covenant, Excess Cash Flow Offer To Purchase, Basis Point Increase, Period Two Debt Instrument, Covenant, Excess Cash Flow Offer To Purchase, Basis Point Increase, Period Two Income Statement Location Income Statement Location [Axis] Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Statistical Measurement Statistical Measurement [Domain] Transaction costs Business Combination, Acquisition Related Costs Counterparty C - Barnett Shale Counterparty C Member Barnett Shale [Member] Counterparty C member barnett shale member Thereafter Finance Lease Liability Payments Due After Year Six Finance lease liability payments due after year six. Schedule of maturities of long-term debt Schedule of Maturities of Long-term Debt [Table Text Block] Environmental Matters Regulatory Environmental Costs, Policy [Policy Text Block] Security Exchange Name Security Exchange Name Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Natural gas, NGLs and condensate sales Oil and Condensate [Member] 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 Senior Secured Revolving Credit Facility Due May 2022 Senior Notes Due May Twenty Twenty Two [Member] Senior notes due may twenty twenty two. Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Rollforward of deferred revenue Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Restructuring Type Restructuring Type [Axis] Weighted-average remaining lease term (years) - operating leases Operating Lease, Weighted Average Remaining Lease Term Tax withholdings and associated payments on vested SMLP LTIP awards Partners Capital Account Tax Withholding For Unit Based Compensation Partners' capital account tax withholding for unit-based compensation. Lease liabilities, current Lease Liabilities Current [Abstract] Lease liabilities current abstract. Expected payment Accrual for Environmental Loss Contingencies, Expected Payment Accrual for Environmental Loss Contingencies, Expected Payment Other noncurrent assets Other Assets, Noncurrent Schedule of intrinsic values Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable [Table Text Block] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Investment, Name Investment, Name [Axis] Segments Segments [Axis] Proceeds from Issuance of Other Long-term Debt Proceeds from Issuance of Other Long-term Debt Units remaining available (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Other (in shares) Partners Capital Account Units Other Partners capital account units other. Net change in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Common units Common Units [Member] Common unit. Entity File Number Entity File Number Redemption price, expressed as percentage of principal amount Debt Instrument, Redemption Price, Percentage Debt Instrument, Covenant, Excess Cash Flow Offer To Purchase, Basis Point Increase, Period One Debt Instrument, Covenant, Excess Cash Flow Offer To Purchase, Basis Point Increase, Period One Debt Instrument, Covenant, Excess Cash Flow Offer To Purchase, Basis Point Increase, Period One 2023 Long-Term Debt, Maturity, Year Two Debt Instrument, Covenant, Excess Cash Flow Offer To Purchase, Period Three Debt Instrument, Covenant, Excess Cash Flow Offer To Purchase, Period Three Debt Instrument, Covenant, Excess Cash Flow Offer To Purchase, Period Three Gain on asset sales, net Gain on asset sales, net Gain (Loss) on Disposition of Assets Subsequent Event Type Subsequent Event Type [Domain] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Debt issuance costs Payments of Financing Costs Long-lived asset impairment Impairment of Long-Lived Assets to be Disposed of Weighted-average discount rate - operating leases (as a percent) Operating Lease, Weighted Average Discount Rate, Percent Nonvested anti-dilutive phantom units excluded from the calculation of diluted EPU (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Subsequent Events [Abstract] Subsequent Events [Abstract] Impairment loss Equity Method Investment, Other than Temporary Impairment Cash, Cash Equivalents and Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Reverse unit split ratio Stockholders' Equity Note, Stock Split, Conversion Ratio 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 Line of Credit Facility, Commitment Fee Percentage Line of Credit Facility, Commitment Fee Percentage Business Acquisition Business Acquisition [Axis] Net income (loss) attributable to limited partners Net income (loss) attributable to limited partners Net Income (Loss) Allocated to Limited Partners Loss contingency in period Loss Contingency, Loss in Period Summit Midstream Partners, LLC Summit Midstream Partners L L C [Member] Summit Midstream Partners, LLC. Extinguishment of debt, gain (loss) (in dollars per share) Extinguishment of Debt, Gain (Loss), Per Share, Net of Tax Accrued interest Increase (Decrease) in Interest Payable, Net Principal Owner Principal Owner [Member] Award Type Award Type [Domain] Share Repurchase Program Share Repurchase Program [Domain] Local Phone Number Local Phone Number 2027 Lessee Operating Lease Liability Payments Due Year Six Lessee operating lease liability payments due year six. Credit Facility Credit Facility [Domain] ASSETS Assets [Abstract] ECP NewCo Loan ECP NewCo Loan [Member] ECP NewCo Loan 2024 Long-Term Debt, Maturity, Year Three Deemed contribution to common unit holders Partners' Capital, Deemed Contribution To Common Unitholders Partners' Capital, Deemed Contribution To Common Unitholders Ohio Gathering Ohio Gathering Company L L C [Member] Ohio Gathering Company, L.L.C. ROU assets obtained in exchange for new finance lease liabilities Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Restructuring costs Restructuring Costs Units granted (in shares) Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Schedule of partner units activity Schedule Of Partner Units Activity Table [Table Text Block] Schedule of partner units activity. Concentration risk, percentage Concentration Risk, Percentage Property, Plant and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Repayment of ECP Loans Repayments of Commercial Paper Series A preferred per unit, price (in dollars per unit) Shares Issued, Price Per Share Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Debt Instrument Debt Instrument [Axis] COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] ROU assets Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization [Abstract] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Information about Contract Assets from Contracts with Customers Schedule Of Contract With Customer Asset Table [Table Text Block] Schedule of contract with customer, asset. Amortizing Intangibles Intangible Assets and Noncurrent Liabilities Policy, Policy [Policy Text Block] Intangible assets and noncurrent liabilities policy. Related Party Related Party [Axis] Rockies Rockies Segment [Member] Rockies Segment Distributions from equity method investees December cash distributions Proceeds from Equity Method Investment, Distribution Term Loan Secured Debt [Member] Accounts receivable Increase (Decrease) in Accounts Receivable Capital expenditures in trade accounts payable (period-end accruals) Capital Expenditures Incurred but Not yet Paid Schedule of accrued environmental remediation Schedule of Environmental Loss Contingencies by Site [Table Text Block] ROU assets obtained in exchange for new operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Cash consideration paid Debt Instrument, Repurchased Face Amount Extinguishment of Debt Extinguishment of Debt [Axis] Land and line fill Landand Line Fill [Member] Land and line fill. Schedule of right-of-use assets and lease liabilities Lease Assets And Liabilities Table [Table Text Block] Lease assets and liabilities. T L Restructuring T L Restructuring [Member] TL Restructuring. Open Market Repurchases Open Market Repurchases [Member] Open market repurchases [member]. Permian Transmission Credit Facility Permian Transmission Credit Facility [Member] Permian transmission credit facility. Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] 2026 Secured Notes Senior Notes Due Twenty Twenty Six [Member] Senior notes due twenty twenty five. Proceeds from issuance of Subsidiary Series A Preferred Units, net of issuance costs Proceeds from Issuance of Preferred Limited Partners Units Reconciliation of net income to adjusted EBITDA Reconciliation Of Net Income To Adjusted E B I T D A Table [Table Text Block] Reconciliation of net income to adjusted EBITDA. Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Financing cash outflows from finance leases Finance Lease, Principal Payments Unused portion under the facility Line of Credit Facility, Remaining Borrowing Capacity Lease expense Operating Lease, Expense 2024 Lessee, Operating Lease, Liability, to be Paid, Year Three REVENUE Revenue from Contract with Customer [Text Block] Thereafter Finite-Lived Intangible Asset, Expected Amortization, after Year Five Unit-based compensation SMLP LTIP unit-based compensation Partners' Capital Account, Unit-based Payment Arrangement, Amount Beginning balance (in shares) Ending balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 2022 Long-Term Debt, Maturity, Year One Commitments and Contingencies Commitments and Contingencies, Policy [Policy Text Block] Maximum period following end of quarter to distribute all available cash Distribution Of All Available Cash Maximum Period Following End Of Quarter Distribution of all available cash, maximum period following end of quarter. Schedule of Disaggregated Revenue by Geographic Area and Major Products and Services Reportable Segments Disaggregation of Revenue [Table Text Block] 2026 Long-Term Debt, Maturity, Year Five Barnett Barnett Shale Segment [Member] Barnett Shale segment. Net income (loss) Profit Loss Excluding Subsidiary Income Profit loss excluding subsidiary income. Units Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Fair Value Measurement Fair Value Measurement [Domain] Natural gas, NGLs and condensate sales Natural Gas N G L And Condensate Sales [Member] Natural gas, NGLs and condensate sales. Liability Management Transactions [Abstract] Liability Management Transactions [Abstract] Liability management transactions abstract. Revenue From Contract With Customer [Line Items] Revenue From Contract With Customer [Line Items] Revenue from contract with customer. Subsidiary Series A preferred unitholders, outstanding (in shares) Preferred Units, Outstanding Operating cash outflows from operating leases Operating Lease, Payments Percentage of operating lease incremental borrowing rate Incremental Borrowing Rate Incremental borrowing rate. Distribution rate (as a percent) Preferred Stock, Dividend Rate, Percentage Paid-in-kind Payment in Kind (PIK) Note [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Total long-term debt Long-term Debt, Gross Redemption period two Debt Instrument, Redemption, Period Two [Member] Entity Voluntary Filers Entity Voluntary Filers Borrowings under 2026 Secured Notes Proceeds from Issuance of Secured Debt Plan Name Plan Name [Axis] Finance Finance Lease, Right-of-Use Asset, after Accumulated Amortization Total long-term debt Total debt Long-term Debt Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Subsidiary Series A Preferred Units Subsidiary Series A Preferred Units [Member] Subsidiary Series A Preferred Units Organization And Business Operations [Table] Organization And Business Operations [Table] Disclosure pertaining to organization and business operations. Entity Small Business Entity Small Business Operating Lessee, Operating Lease, Liability, Payment, Due [Abstract] Beginning Balance (in shares) Ending Balance (in shares) Partners' Capital Capitalized interest paid Interest Paid, Capitalized, Investing Activities Cash paid to unit holders Distribution Made to Limited Partner, Cash Distributions Declared Change in Contract With Customer, Liability, Current [Roll Forward] Change in Contract With Customer, Liability, Current [Roll Forward] Change in Contract With Customer, Liability, Current Shares exchanged Conversion of Stock, Shares Converted Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Asset Retirement Obligations Asset Retirement Obligation [Policy Text Block] TOTAL LIABILITIES AND CAPITAL Liabilities and Equity Tax withholdings on Series A Preferred Unit Exchange Partners' Capital, Decrease From Tax Withholding From Preferred Stock Exchange Partners' Capital, Decrease From Tax Withholding From Preferred Stock Exchange 2015 Blacktail Release 2015 Blacktail Release [Member] 2015 Blacktail Release Gathering and processing systems and related equipment Gas Gathering and Processing Equipment [Member] Deferred revenue Beginning balance Ending balance Contract with Customer, Liability, Current 2026 Lessee, Operating Lease, Liability, to be Paid, Year Five Five Largest Customers Five Largest Customers [Member] Five largest customers. Less: reclassification to current deferred revenue Contract With Customer Liability Noncurrent Reclassification To Current Contract with customer liability noncurrent reclassification to current. Restricted cash Restricted Cash Total Finance And Operating Lease Right Of Use Asset Finance and operating lease right of use asset. GP Buy-In Transaction (in shares) General partner units converted (in shares) Partners' Capital Account, Units, Converted Supplemental Cash Flow Elements [Abstract] Supplemental Cash Flow Elements [Abstract] Common limited partner capital (7,169,834 and 6,110,092 units issued and outstanding at December 31, 2021 and December 31, 2020, respectively) Limited Partners' Capital Account CONCENTRATIONS OF RISK Concentration Risk [Line Items] LIABILITIES AND CAPITAL Liabilities and Equity [Abstract] Environmental Remediation Site Environmental Remediation Site [Axis] Interest Rate Swap Interest Rate Swap [Member] Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] 2026 Secured Notes Senior Secured Notes Due 2026 [Member] Senior Secured Notes Due 2026 Right-of-use assets relating to ASC Topic 842 Operating And Finance Lease, Right Of Use Asset Obtained In Exchange For Operating Lease Liability Operating And Finance Lease, Right Of Use Asset Obtained In Exchange For Operating Lease Liability Piceance Piceance Basin Segment [Member] Piceance Basin segment. EARNINGS PER UNIT Earnings Per Share [Text Block] Percentage of ownership interest Equity Method Investment, Ownership Percentage Entity Interactive Data Current Entity Interactive Data Current Thereafter Long-Term Debt, Maturity, after Year Five 2025 Finite-Lived Intangible Asset, Expected Amortization, Year Four Standby Letters of Credit Standby Letters of Credit [Member] Minimum Minimum [Member] Redemption amount Preferred Stock, Redemption Amount ORGANIZATION, BUSINESS OPERATIONS AND PRESENTATION AND CONSOLIDATION Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Schedule of assets by reportable segment Reconciliation of Assets from Segment to Consolidated [Table Text Block] Other, net Increase (Decrease) in Other Operating Assets and Liabilities, Net 2023 Lessee, Operating Lease, Liability, to be Paid, Year Two Line of credit facility, outstanding amount Long-term Line of Credit Common unit - diluted (in dollars per share) Net Income (Loss), Net of Tax, Per Outstanding Limited Partnership Unit, Diluted Income (loss) before income taxes and equity method investment income Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Less unamortized debt issuance costs Deferred issuance costs Debt Issuance Costs, Net Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Proceeds from asset sale Proceeds from Sale of Productive Assets Subsidiary Subsidiaries Subsidiaries [Member] Class of Warrant or Right Class of Warrant or Right [Domain] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Address, State or Province Entity Address, State or Province Common units - basic (in shares) Weighted-average common units outstanding – basic (in shares) Weighted Average Limited Partnership Units Outstanding, Basic Senior Notes Due 2023 Senior Notes Due Twenty Twenty Three [Member] Senior notes due twenty twenty two. Change in subsidiary Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table Text Block] Common limited partner capital, outstanding (in shares) Common limited partner capital (in shares) Limited Partners' Capital Account, Units Outstanding Accrued compensation and employee benefits Accrued Employee Benefits, Current New issuances Stock Issued During Period, Value, New Issues 2025 Long-Term Debt, Maturity, Year Four General and administrative General and Administrative Expense SUPPLEMENTAL CASH FLOW INFORMATION Cash Flow, Supplemental Disclosures [Text Block] Revision of Prior Period Revision of Prior Period [Axis] Restructuring Plan Restructuring Plan [Domain] DEBT Debt Disclosure [Text Block] Common stock held (in shares) Shares, Outstanding Other Other Restructuring [Member] UNIT-BASED AND NONCASH COMPENSATION Share-based Payment Arrangement [Text Block] Penalties and fines, payment period Environmental Loss Contingencies, Penalties and Fines, Payment Period Environmental Loss Contingencies, Penalties and Fines, Payment Period Summit Midstream Partners Holdings L L C Summit Midstream Partners Holdings L L C [Member] Summit Midstream Partners Holdings, LLC. Proceeds from issuance of common limited partners units Proceeds from Issuance of Common Limited Partners Units Accounting Policies [Abstract] Accounting Policies [Abstract] Derivative Instrument [Axis] Derivative Instrument [Axis] Issuance costs Payments of Stock Issuance Costs Partner Type of Partners' Capital Account, Name Partner Type of Partners' Capital Account, Name [Domain] Document Transition Report Document Transition Report Weighted-average discount rate - finance leases (as a percent) Finance Lease, Weighted Average Discount Rate, Percent Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Natural Resource Damages To Federal and State Governments Natural Resource Damages To Federal and State Governments [Member] Natural Resource Damages To Federal and State Governments Gain on Repurchases of Senior Notes and TL Restructuring Gain Loss On Face Value Of Senior Notes Gain loss on face value of senior notes. Weighted-average remaining vesting period Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Common unit issuance due to TL Restructuring Partners Capital Account Issuance Of Common Unit Due To Restructuring Partners capital account issuance of common unit due to restructuring. Beginning balance (in dollars per unit) Ending balance (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 Customer Concentration Risk Customer Concentration Risk [Member] Presentation and Consolidation Basis of Accounting, Policy [Policy Text Block] Commitments and contingencies (Note 10) Commitments and Contingencies Debt Long-term Debt, Fiscal Year Maturity [Abstract] Noncurrent assets Assets, Noncurrent Subsequent Event [Table] Subsequent Event [Table] LEASES Lessee, Operating Leases [Text Block] Repurchase of common units under GP Buy-In Transaction Partners Capital Account, Decrease From Repurchase of Common Units Partners Capital Account, Decrease From Repurchase of Common Units Debt Instrument, Covenant, Excess Cash Flow Offer To Purchase, Basis Point Increase, Period Three Debt Instrument, Covenant, Excess Cash Flow Offer To Purchase, Basis Point Increase, Period Three Debt Instrument, Covenant, Excess Cash Flow Offer To Purchase, Basis Point Increase, Period Three Entity Emerging Growth Company Entity Emerging Growth Company Amortization of ROU assets (included in depreciation and amortization) Finance Lease, Right-of-Use Asset, Amortization Partner Capital Components Partner Capital Components [Domain] Damages Payable To State Governments Over Six Years Damages Payable To State Governments Over Six Years [Member] Damages Payable To State Governments Over Six Years Statement of Partners' Capital [Abstract] Statement of Partners' Capital [Abstract] ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Borrowings under ECP Loans Proceeds from Issuance of Debt Schedule of activity Share-based Payment Arrangement, Activity [Table Text Block] Antidilutive Securities, Name Antidilutive Securities, Name [Domain] Legal Entity Legal Entity [Axis] Auditor Name Auditor Name Cover [Abstract] Cover [Abstract] Effect of nonvested phantom units (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Series A Preferred Unit Tender (in shares) Preferred Unit Tender Preferred unit tender. Total costs and expenses Costs and Expenses Class of Stock Class of Stock [Axis] Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Purchase price per share (in dollars per share) Purchase Price Per Share Purchase price per share. OCC Ohio Condensate Company [Member] Ohio Condensate Company. Common units retire (in shares) Treasury Stock, Shares ECP Warrant Exercise (in shares) Partners' Capital Account, Units, Issued For Warrant Exercises Partners' Capital Account, Units, Issued For Warrant Exercises Collaborative Arrangement and Arrangement Other than Collaborative Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Open Market Repurchases And Tender Offer Repurchase Open Market Repurchases And Tender Offer Repurchase [Member] Open Market Repurchases and Tender Offer Repurchase. Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract] Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract] Type of Cost, Good or Service [Extensible List] Cost, Product and Service [Extensible Enumeration] Debt Instrument, Covenant, Ownership Percentage of Principal Debt Instrument, Covenant, Ownership Percentage of Principal Debt Instrument, Covenant, Ownership Percentage of Principal SMLP Common Units SMLP Common Units [Member] SMLP Common Units Other Gas Gathering Contract Other Gas Gathering Contract [Member] Other gas gathering contract. Subsidiary Series A Preferred Units (91,439 and 85,308 units issued and outstanding at December 31, 2021 and December 31, 2020, respectively) Temporary Equity, Carrying Amount, Attributable to Parent Debt Instrument, Covenant, Repurchase Amount Of Principal Plus Accrued Interest Debt Instrument, Covenant, Repurchase Amount Of Principal Plus Accrued Interest Debt Instrument, Covenant, Repurchase Amount Of Principal Plus Accrued Interest Number of common units purchased (in shares) Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Entity Entity [Domain] Accrued expenses Accrued Liabilities, Current Total revenues Revenue from Contract with Customer, Excluding Assessed Tax Rights-of-way Rights Of Way [Member] Represents information pertaining to rights-of-way intangible assets. Number of shares purchased, value Stock Purchased During Period Value Stock purchased during period value. Equity [Abstract] Equity [Abstract] Fair Value Hierarchy and NAV Fair Value Hierarchy and NAV [Axis] Carrying Value (1) Reported Value Measurement [Member] Consolidation Items Consolidation Items [Domain] SMPH Term Loan Restructuring S M P H Term Loan Restructuring [Member] SMPH term loan restructuring. Cash Payments Payments for Restructuring (Gain) loss on ECP Warrants and other Fair Value Adjustment of Warrants Noncash lease expense Non Cash Lease Expense Non cash lease expense. 2026 Finance Lease, Liability, to be Paid, Year Five Common Units Common Stock [Member] Variable Rate Variable Rate [Axis] Conversion of Preferred Units Partners' Capital Account, Exchanges and Conversions Other Equity Method Investment, Other Equity Method Investment, Other SEGMENT INFORMATION Segment Reporting Disclosure [Text Block] Weighted-average remaining lease term (years) - finance leases Finance Lease, Weighted Average Remaining Lease Term Number of top customers Number Of Top Customers Number of top customers. Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Operating Operating Lease, Liability, Current SMLP common units pledged as collateral under the SMPH Term Loan (in shares) Common Units Pledged As Collateral Common units pledged as collateral. 2023 Finite-Lived Intangible Asset, Expected Amortization, Year Two Document Fiscal Year Focus Document Fiscal Year Focus Repurchases of Senior Notes Payments For Debt Instrument Repurchase Payments For Debt Instrument Repurchase. Warrant issuance for GP Buy-In Transaction Warrant Issuance For G P Buy In Transaction Warrant issuance for GP Buy-In Transaction. Gain (loss) on warrant exercise Gain (Loss) On Warrant Exercise Gain (Loss) On Warrant Exercise Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Unit-based and noncash compensation Share-based Payment Arrangement, Noncash Expense RESTRUCTURING Restructuring and Related Activities Disclosure [Text Block] Variable Rate Variable Rate [Domain] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Depreciation expense Depreciation Exercise of ECP Warrants Partners' Capital Account, Option Exercise Long-term Debt, Type Long-term Debt, Type [Domain] TL Restructuring Payments of Debt Restructuring Costs Distribution percentage of liquidation preference rate of undrawn commitment units Percentage Of Undrawn Commitment Units Percentage of undrawn commitment units. Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Effect of common issuances under  SMLP LTIP Partners' Capital Account, Sale of Units Liquidation preference per unit (in dollars per share) Preferred Stock, Liquidation Preference Per Share Equity Method Investment, Nonconsolidated Investee Equity Method Investment, Nonconsolidated Investee [Axis] Office Space Office Space [Member] Office space. Accrued expenses Increase (Decrease) in Accrued Liabilities Loss on ECP Warrants Gain (Loss) on Derivative Instruments, Net, Pretax Partners' Capital Partners Capital [Member] Partners capital. Collaborative Arrangement and Arrangement Other than Collaborative Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Equity Method Investments Equity Method Investments [Policy Text Block] Cash paid for taxes Income Taxes Paid Total Finance And Operating Lease Liability Current Finance and operating lease liability current. Adjustments related to capital reimbursement activity Adjustments Related To Capital Reimbursement Activity Adjustments related to capital reimbursement activity. Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Derivative instrument, notional amount Derivative, Notional Amount Environmental Remediation Site Environmental Remediation Site [Domain] Impairment of property, plant and equipment Impairment Of Property Plant And Equipment Impairment of property, plant and equipment. Term Loan Credit Facility Term Loan Credit Facility [Member] Term loan credit facility. Series A Preferred Units Series A Preferred Units [Member] Series A preferred units. Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed Other, net Payments for (Proceeds from) Other Investing Activities Add: Reconciliation Of Net Income To E B I T D A Additions [Abstract] Reconciliation of net Income to EBITDA, additions. Additional accruals Accrual for Environmental Loss Contingencies, Period Increase (Decrease) Other revenues Other Products And Services [Member] Other products and services. Capital expenditures Payments to Acquire Property, Plant, and Equipment Other current liabilities Other Liabilities, Current Fair value of interest rate swap Derivative, Fair Value, Net Summary of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Summary of significant accounting policies. Net cash distribution to SMLP unitholders Partners' Capital Account, Distributions PARTNERS' CAPITAL AND MEZZANINE CAPITAL Partners' Capital Notes Disclosure [Text Block] Maximum Maximum [Member] Share-based Payment Arrangement [Abstract] Share-based Payment Arrangement [Abstract] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Northeast Northeast Segment [Member] Northeast Segment Total liabilities Liabilities Debt Instrument, Covenant, Mandatory Redemption Period Debt Instrument, Covenant, Mandatory Redemption Period Debt Instrument, Covenant, Mandatory Redemption Period Preferred Tender Payment For Preferred Stock Tender Payment for preferred stock tender. Award Type Award Type [Axis] 2022 Finite-Lived Intangible Asset, Expected Amortization, Year One Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Depreciation and amortization Depreciation Depletion And Amortization Including Amortization Of Above And Below Market Leases Depreciation depletion and amortization including amortization of above and below market leases. SMLP LTIP Long Term Incentive Plan [Member] Long-term incentive plan. Consolidation Items Consolidation Items [Axis] Change in Contract With Customer, Liability, Noncurrent [Roll Forward] Change in Contract With Customer, Liability, Noncurrent [Roll Forward] Change in Contract With Customer, Liability, Noncurrent City Area Code City Area Code EQUITY METHOD INVESTMENTS Equity Method Investments and Joint Ventures Disclosure [Text Block] Schedule of supplemental cash flow information Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Partner Capital Components Partner Capital Components [Axis] Lease liabilities, noncurrent Lease Liabilities Noncurrent [Abstract] Lease liabilities noncurrent abstract. Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Energy Capital Partners Energy Capital Partners [Member] Energy Capital Partners. Entity Address, City or Town Entity Address, City or Town Term loan facility Debt Conversion, Converted Instrument, Amount Working Capital Credit Facility Working Capital Credit Facility [Member] Working Capital Credit Facility. Repayments on ABL Facility Repayments of Other Debt Repayment of 2022 Senior Notes Repayments of Senior Debt Gain (loss) on early extinguishment of debt Gain (loss) on debt extinguishment Gain on early extinguishment of debt Gain (Loss) on Extinguishment of Debt ECP Loan Repayment E C P Loan Repayment [Member] ECP loan repayment. AMORTIZING INTANGIBLE ASSETS Intangible Assets Disclosure [Text Block] Summit Midstream GP, LLC Summit Midstream G P L L C [Member] Summit Midstream GP, LLC Purchase of common units in GP Buy-In Transaction Payments for Repurchase of Common Stock Useful life Property, Plant and Equipment, Useful Life Noncash investing and financing activities: Noncash Investing and Financing Items [Abstract] Senior Notes repurchased Debt Instrument, Repurchase Amount 2020 Restructuring Plan Two Thousand Twenty Restructuring Activities [Member] 2020 restructuring activities member Operating Operating Lease, Liability, Noncurrent Redemption accretion Accretion of Subsidiary Series A Preferred Units Preferred Stock, Accretion of Redemption Discount Total future minimum lease payments Finance Lease, Liability, Payment, Due Debt instrument, amount Debt Instrument, Face Amount Interest expense Interest expense Interest Expense 2022 Finance Lease, Liability, to be Paid, Year One Debt Instrument, Interest Rate, Effective Percentage Debt Instrument, Interest Rate, Effective Percentage Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Transaction costs Debt Transaction Cost Debt transaction cost. Debt Instrument, Covenant, Excess Cash Flow Offer To Purchase, Period One Debt Instrument, Covenant, Excess Cash Flow Offer To Purchase, Period One Debt Instrument, Covenant, Excess Cash Flow Offer To Purchase, Period One Reportable Segments Operating Segments [Member] Operating leases, term of contract Lessee, Operating Lease, Term of Contract Litigation Case [Domain] Litigation Case [Domain] Costs And Expenses Costs And Expenses [Member] Costs and expenses. Ad valorem taxes payable Accrual for Taxes Other than Income Taxes, Current Revision of Prior Period Revision of Prior Period [Domain] Equity Method Investments Equity Method Investments [Table Text Block] Entity Filer Category Entity Filer Category Schedule of segment reporting information Reconciliation of Revenue from Segments to Consolidated [Table Text Block] Fair value of SMLP equity for TL Restructuring Fair Value Of Equity For T L Restructuring Fair value of equity for TL restructuring. Share Repurchase Program Share Repurchase Program [Axis] Income Statement [Abstract] Income Statement [Abstract] Investment in equity method investees Beginning balance Ending balance Equity Method Investments Concentration Risk [Table] Concentration Risk [Table] Revolving credit facility Secured Long-term Debt, Noncurrent Fair Value Estimate of Fair Value Measurement [Member] Entity Registrant Name Entity Registrant Name Partner Type Partner Type [Axis] Repayments on Revolving Credit Facility Repayments of Lines of Credit 2024 Finance Lease, Liability, to be Paid, Year Three 2025 Finance Lease, Liability, to be Paid, Year Four Unrealized loss on interest rate swaps Settlement Of Interest Rate Derivatives Settlement of interest rate derivatives. Summit Holdings and Finance Corporation Summit Holdings And Finance Corporation [Member] Summit Holdings and Finance Corporation. Senior notes Notes Payable, Fair Value Disclosure Common Units Limited Partner Common Units [Member] Limited partner common units. 2023 Finance Lease, Liability, to be Paid, Year Two Series A Preferred Unit Exchange Offer, net of shares withheld for taxes (in shares) Preferred Unit Exchange, Net Of Shares Withheld For Taxes Preferred Unit Exchange, Net Of Shares Withheld For Taxes Finite-Lived Intangible Assets by Major Class Finite-Lived Intangible Assets by Major Class Finite-Lived Intangible Assets by Major Class [Axis] Income tax benefit Income Tax Expense (Benefit) Accounts receivable Accounts Receivable, after Allowance for Credit Loss, Current Amendment Flag Amendment Flag Debt Instrument, Covenant, Excess Cash Flow Offer To Purchase, Period Two Debt Instrument, Covenant, Excess Cash Flow Offer To Purchase, Period Two Debt Instrument, Covenant, Excess Cash Flow Offer To Purchase, Period Two Entity Tax Identification Number Entity Tax Identification Number Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Antidilutive Securities Antidilutive Securities [Axis] Document Fiscal Period Focus Document Fiscal Period Focus Liability Management Transactions Liability Management Transactions [Member] Liability Management Transactions. Additions Contract With Customer Asset Additions Contract with customer asset, additions. Total current assets Current assets Assets, Current Shares issued (in shares) Conversion of Stock, Shares Issued Cash payments to ECP Partners' Capital Account, Cash Payments Partners' Capital Account, Cash Payments Total future minimum lease payments Lessee, Operating Lease, Liability, to be Paid Concentration Risk Type Concentration Risk Type [Domain] Accounts receivable Accounts Receivable [Member] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Capital stock issued Proceeds from Sale of Interest in Partnership Unit Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Equity Method Investment, Nonconsolidated Investee Equity Method Investment, Nonconsolidated Investee [Domain] Unit-Based Compensation Share-based Payment Arrangement [Policy Text Block] Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Repayments of accrued interest Repayments Of Accrued Interest Repayments Of Accrued Interest GP-Buy-In Transaction assumption of noncontrolling interest in SMLP Partners Capital Account, Increase From Assumption of Noncontrolling Interest Partners Capital Account, Increase From Assumption of Noncontrolling Interest Accrued environmental remediation Accrued Environmental Loss Contingencies, Current Product and Service Product and Service [Axis] Long-Lived Tangible Asset Long-Lived Tangible Asset [Domain] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Grant date fair value (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Weighted Average Grant Date Fair Value Restructuring Plan Restructuring Plan [Axis] Schedule of extinguishment of debt Schedule of Extinguishment of Debt [Table Text Block] Entity Public Float Entity Public Float Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Sales Revenue, Net Revenue Benchmark [Member] Redemption period three Debt Instrument, Redemption, Period Three [Member] Favorable gas gathering contracts Favorable Gas Gathering Contract [Member] Represents information pertaining to favorable gas gathering contract intangible assets. 2022 Lessee, Operating Lease, Liability, to be Paid, Year One 2027 Finance Lease Liability Payments Due Year Six Finance lease liability payments due year six. Common units issued (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period Rollforwards of the number of partner units Increase (Decrease) in Partners' Capital [Roll Forward] GP Buy-In GP Buy-In [Member] GP Buy-In Extinguishment of Debt, Type Extinguishment of Debt, Type [Domain] Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Capital expenditures Payments for (Proceeds from) Productive Assets Statement [Line Items] Statement [Line Items] Litigation Case [Axis] Litigation Case [Axis] Limited Partners' Capital Account, Class Limited Partners' Capital Account, Class [Domain] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Deferred revenue, net Increase (Decrease) in Contract with Customer, Liability Less: revenue recognized Contract With Customer Liability Current Revenue Recognized Contract with customer liability current revenue recognized. Revenue, remaining performance obligation Revenue, Remaining Performance Obligation, Amount Additions Contract With Customer Liability Current Additions Contract with customer liability current additions. Charges Incurred Restructuring and Related Cost, Incurred Cost ABR A B R [Member] ABR member Summary of the estimated fair value of debt instruments Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Conversion of Stock, Name Conversion of Stock, Name [Domain] 2025 Lessee, Operating Lease, Liability, to be Paid, Year Four Debt Disclosure [Abstract] Debt Disclosure [Abstract] Finance Finance Lease, Liability, Current Estimated fair value (Level 2) Fair Value, Inputs, Level 2 [Member] Cash payment on the deferred purchase price obligation Cash Payment On Deferred Purchase Price Obligation Cash payment on Deferred Purchase Price Obligation. Other Other Capitalized Property Plant and Equipment [Member] Long-Lived Tangible Asset Long-Lived Tangible Asset [Axis] Noncurrent deferred revenue Beginning balance Ending balance Contract with Customer, Liability, Noncurrent Auditor Location Auditor Location Total partners capital Beginning balance Ending balance Partners' Capital, Including Portion Attributable to Noncontrolling Interest Corporate and Other Corporate, Non-Segment [Member] Equity Method Investment [Roll Forward] Equity Method Investment Roll Forward Equity method investment. Segment Reporting [Abstract] Segment Reporting [Abstract] Type of Restructuring Type of Restructuring [Domain] Unsecured notes Unsecured Long-term Debt, Noncurrent Finance leases, term of contract Lessee, Finance Lease, Term of Contract Useful lives (In years) Finite-Lived Intangible Asset, Useful Life Customer Customer [Axis] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Interest on lease liabilities (included in interest expense) Finance Lease, Interest Expense Per-unit annual distributions to unitholders (in dollars per unit) Distribution Made to Limited Partner, Distributions Declared, Per Unit Mezzanine Capital Temporary Equity [Abstract] Adjusted EBITDA Total of reportable segments' measures of profit Adjusted Earnings Before Interest Taxes Depreciation And Amortization Adjusted earnings before interest, taxes, depreciation, and amortization. Trade accounts payable Increase (Decrease) in Accounts Payable, Trade Schedule of earnings per limited partner unit Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Document Annual Report Document Annual Report Finance Finance Lease, Liability, Payment, Due [Abstract] Schedule of unit-based compensation recognized in general and administrative expense Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] TL Restructuring (in shares) Partners Capital Units Term Loan Restructuring Partners Capital Units Term Loan Restructuring. Title of 12(b) Security Title of 12(b) Security Common units - diluted (shares) Weighted-average common units outstanding – diluted (in shares) Weighted Average Limited Partnership Units Outstanding, Diluted ECP Holdings Loan ECP Holdings Loan [Member] ECP Holdings Loan Basis difference Equity Method Investment Amortizationof Difference Between Carrying Amountand Underlying Equity Equity method investment, amortization of difference between carrying amount and underlying equity. TOTAL ASSETS Assets Assets Investment, Name Investment, Name [Domain] Plan Name Plan Name [Domain] Net cash distributions to noncontrolling interest SMLP unitholders Payments to Noncontrolling Interests Cash interest paid Interest Paid, Excluding Capitalized Interest, Operating Activities Repayments of debt Repayments of Secured Debt Document Type Document Type Other Partners' Capital, Other 2019 Restructuring Plan Two Thousand Nineteen Restructuring Activities [Member] 2019 restructuring activities member Noncontrolling Interest Noncontrolling Interest [Member] Product and Service Product and Service [Domain] Reverse Unit Split Reverse Unit Split [Member] Reverse unit split member. Summit Investments Summit Investments [Member] Summit investments. Additions Contract With Customer Liability Noncurrent Additions Contract with customer liability noncurrent additions. Stated interest rate (as a percent) Debt Instrument, Interest Rate, Stated Percentage Derivative Contract [Domain] Derivative Contract [Domain] Common Noncontrolling Interest Common Noncontrolling Interests [Member] Common noncontrolling interests. Net loss attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Noncurrent liabilities Liabilities, Noncurrent Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Revolving credit facility Revolving Credit Facility [Member] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] Revenue, remaining performance obligation, expected timing of satisfaction, Period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Equity Method Investment, Nonconsolidated Investee or Group of Investees Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities All Other Segments Other Segments [Member] Subsidiary Series A preferred unitholders, issued (in shares) Preferred units issued (in shares) Preferred Units, Issued Schedule of lease cost and other information Lease, Cost [Table Text Block] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Number of shares purchased Stock Purchased During Period Shares Stock purchased during period shares. Subsequent Event [Line Items] Subsequent Event [Line Items] Schedule of depreciation expense and capitalized interest costs Schedule Of Depreciation Expense And Capitalized Interest Costs Table [Table Text Block] Tabular disclosure of depreciation expense related to the property, plant and equipment and capitalized interest costs. Stock Conversion Description Stock Conversion Description [Axis] Segments Segments [Domain] Counterparty C - Utica Shale Counterparty C [Member] Counterparty C. Fair value issuance of warrants Partners' Capital Account, Fair Value Issuance of Warrants Partners' Capital Account, Fair Value Issuance of Warrants Transaction costs Transaction Costs Transaction costs. Meadowlark Midstream Gathering System Meadowlark Midstream Gathering System [Member] Meadowlark Midstream gathering system. Audit Information [Abstract] Audit Information [Abstract] SUBSEQUENT EVENTS Subsequent Events [Text Block] Debt Instrument, Unused Borrowing Capacity, Amount Debt Instrument, Unused Borrowing Capacity, Amount Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Lease cost Lease, Cost [Abstract] Receivables with customers Unbilled Contracts Receivable Employee-related costs Employee Severance [Member] Total operating expenses Cost of Revenue Asset Backed Lending Facility Asset Backed Lending Facility [Member] Asset Backed Lending Facility Counterparty C - Permian Basin Counterparty C Member Permian Basin [Member] Counterparty C member permian basin member Net cash used in (provided by) financing activities Net Cash Provided by (Used in) Financing Activities Debt Instrument, Covenant, Interest Coverage Ratio Debt Instrument, Covenant, Interest Coverage Ratio Debt Instrument, Covenant, Interest Coverage Ratio Weighted-average limited partner units outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Net income (loss) per limited partner unit: Net Income (Loss), Per Outstanding Limited Partnership Unit, Basic, Net of Tax [Abstract] Income from equity method investees Income from equity method investees Income (Loss) from Equity Method Investments Debt Instrument, Covenant, First Lien Net Leverage Ratio Debt Instrument, Covenant, First Lien Net Leverage Ratio Debt Instrument, Covenant, First Lien Net Leverage Ratio Business Acquisition, Acquiree Business Acquisition, Acquiree [Domain] Distribution percentage of subsidiary unit Percentage Of Subsidiary Units Percentage of subsidiary units. FINANCIAL INSTRUMENTS Fair Value Disclosures [Text Block] Total Severance and Other Restructuring Charges Other information Income and Expenses, Lessee [Abstract] Trade accounts payable Accounts Payable, Current Concentration Risk Type Concentration Risk Type [Axis] Depreciation and amortization Depreciation, Depletion and Amortization 2024 Finite-Lived Intangible Asset, Expected Amortization, Year Three Proceeds under credit facilities Proceeds from Long-term Lines of Credit Preferred Stock Exchange Offer Preferred Stock Exchange Offer [Member] Preferred stock exchange offer. Accrued settlement payable Estimated Litigation Liability, Current Restructuring and Related Costs Restructuring and Related Costs [Table Text Block] PIK distributions Distribution Made to Limited Partner, Value, Unit Distribution Distribution Made to Limited Partner, Value, Unit Distribution Contract assets, beginning of period Contract assets, end of period Contract assets included in accounts receivable Contract with Customer, Asset, after Allowance for Credit Loss Dividends payable Dividends Payable Partners Capital [Line Items] Partners Capital [Line Items] Partners' capital. Other income (expense), net Other Operating Income (Expense), Net Liability Management Transactions Liability Management Transactions [Text Block] Liability management transactions. Cost of natural gas and NGLs Cost of Goods and Services Sold Revenues: Revenues [Abstract] (Gain) loss on extinguishment of debt Non Cash Portion Of Gain On Early Extinguishment Of Debt Non cash portion of gain on early extinguishment of debt. Restructuring and Related Activities [Abstract] Restructuring and Related Activities [Abstract] Document Period End Date Document Period End Date Other Revenue Other Revenue [Member] Other revenue. Add: deemed capital contribution Contributed Capital From Preferred Units Exchange Contributed Capital From Preferred Units Exchange Advisory fees and other direct costs Partners' Capital Account, Advisory Fees And Other Direct Costs Partners' Capital Account, Advisory Fees And Other Direct Costs Entity Central Index Key Entity Central Index Key Concentration Risk Benchmark Concentration Risk Benchmark [Domain] Permian Term Loan Facility Permian Term Loan Facility [Member] Permian Term Loan Facility Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Schedule of Estimated Revenue Expected to be Recognized and MVC Shortfall Payments Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] Organization And Business Operations [Line Items] Organization And Business Operations [Line Items] Organization and business operations. Other revenues Product and Service, Other [Member] Consolidated Entities Consolidated Entities [Domain] Unpaid penalties and fines, fixed rate (as a percent) Accrual for Environmental Loss Contingencies, Discount Rate Total lease cost Lease, Cost Schedule of property, plant, and equipment, net Property, Plant and Equipment [Table Text Block] Debt Instrument, Covenant, Redemption, Percent of Initial Principal Amount Remaining Outstanding Debt Instrument, Covenant, Redemption, Percent of Initial Principal Amount Remaining Outstanding Debt Instrument, Covenant, Redemption, Percent of Initial Principal Amount Remaining Outstanding Capitalized interest Capitalized Interest Costs, Including Allowance for Funds Used During Construction Amortization period of debt instrument Debt Instrument, Term Income Statement Location Income Statement Location [Domain] Reserved for issuance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized Payments made Accrual for Environmental Loss Contingencies, Payments Tender offer Preferred Stock Tender Offer [Member] Preferred stock tender offer. Loss Contingencies [Line Items] Loss Contingencies [Line Items] Property, plant and equipment, net Property, plant and equipment, net Property, Plant and Equipment, Net PROPERTY, PLANT, AND EQUIPMENT Property, Plant and Equipment Disclosure [Text Block] Total Finance And Operating Lease Liability Noncurrent Finance and operating lease liability noncurrent. Debt Instrument, Issued As A Percentage of Face Value Debt Instrument, Issued As A Percentage of Face Value Debt Instrument, Issued As A Percentage of Face Value Other noncurrent liabilities Other Liabilities, Noncurrent Permian Permian Basin Segment [Member] Permian Basin segment member. Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Summary of significant accounting policies. Schedule of debt and capital leases Schedule of Long-term Debt Instruments [Table Text Block] Estimated aggregate annual amortization expected to be recognized Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Debt Instrument [Line Items] Debt Instrument [Line Items] Trading Symbol Trading Symbol Earnings Per Share [Abstract] Earnings Per Share [Abstract] Repayments on SMPH Term Loan before TL Restructuring Repayments of Related Party Debt Counterparty A - Piceance Basin Counterparty A [Member] Counterparty A. Property, plant and equipment, gross Property, Plant and Equipment, Gross Result of operations Revenues Term Loan result in consensual debt discharge of full amount owed under Term Loan exchange Term Loan Result In Consensual Debt Discharge Of Full Amount Owed In Term Loan Exchange Term loan result in consensual debt discharge of full amount owed in term loan exchange. Gathering services and related fees Gathering Servicesand Related Fees [Member] Gathering services and related fees. Equipment Equipment [Member] Exercise price of warrants (in dollars per share) Class of Warrant or Right, Exercise Price of Warrants or Rights Preferred units issued during period (in shares) Preferred Units, Issued During Period Preferred Units, Issued During Period Borrowing base Line of Credit Facility, Current Borrowing Capacity Operation and maintenance Utilities Operating Expense, Maintenance and Operations Severance Charges Severance Costs Line of Credit Facility [Table] Line of Credit Facility [Table] Corporate and Other expense Corporate And Other Expenses Corporate and other expenses. 2025 Senior Notes Senior Notes Due 2025 [Member] Senior Notes due 2025 Loss contingency accrual Loss Contingency Accrual Partners Capital [Table] Partners Capital [Table] Partners' capital. Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Costs and expenses: Costs and Expenses [Abstract] 2026 Notes 2026 Notes [Member] 2026 Notes SMLP common units not pledged as collateral under the SMPH Term Loan (in shares) Common Units Not Pledged As Collateral Common units not pledged as collateral. Long-term debt, net Long-term Debt, Excluding Current Maturities Preferred Unit Exchange Offer (in shares) Preferred Unit Exchange Offer Preferred Unit Exchange Offer Tender Offers Tender Offer Repurchase [Member] Tender offer repurchase. Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Entity Current Reporting Status Entity Current Reporting Status Weighted-average grant date fair value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Accrual for Environmental Loss Contingencies [Roll Forward] Accrual for Environmental Loss Contingencies [Roll Forward] Series A Preferred Units Series A Preferred Stock [Member] ABL Facility ABL Facility [Member] ABL Facility Net income (loss) Net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Amortization of debt issuance costs Amortization of Debt Issuance Costs Class of Warrant or Right Class of Warrant or Right [Axis] Construction in progress Construction in Progress [Member] Cash, cash equivalents and restricted cash, beginning of period Cash, cash equivalents and restricted cash, end of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Damages Payable To Federal Government over Five Years Damages Payable To Federal Government over Five Years [Member] Damages Payable To Federal Government over Five Years Limited Partners' Capital Account by Class Limited Partners' Capital Account by Class [Axis] Schedule of counterparties accounting for more than 10% of total revenues Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Other, net Proceeds from (Payments for) Other Financing Activities Redemption period one Debt Instrument, Redemption, Period One [Member] Gross carrying amount Finite-Lived Intangible Assets, Gross Leases [Abstract] Leases [Abstract] Schedule of Extinguishment of Debt [Table] Schedule of Extinguishment of Debt [Table] Beginning balance (in shares) Ending balance (in shares) Partners' Capital Account, Units Intangible assets and liabilities subject to amortization Schedule of Finite-Lived Intangible Assets [Table Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Common limited partner capital, issued (in shares) Limited Partners' Capital Account, Units Issued LIBOR London Interbank Offered Rate (LIBOR) [Member] Impairment of Long-Lived Assets Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Debt Instrument, Covenant, Maximum Amount Outstanding For Maturity Debt Instrument, Covenant, Maximum Amount Outstanding For Maturity Debt Instrument, Covenant, Maximum Amount Outstanding For Maturity Contract intangibles Contract Intangibles [Member] Represents information pertaining to intangible contract values of the gas gathering agreement. Entity Address, Postal Zip Code Entity Address, Postal Zip Code Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Intrinsic value of vested LTIP awards Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested Valuation of warrants Warrants and Rights Outstanding ECP Holdings Warrant E C P Holdings Warrant [Member] ECP holdings warrant. Amortization expense Amortization Accrued interest Interest Payable, Current Long-term Debt, Type Long-term Debt, Type [Axis] Related Party Related Party [Domain] Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Basis spread on variable rate (as a percent) Basis spread on variable rate (as a percent) Debt Instrument, Basis Spread on Variable Rate Measurement Basis Measurement Basis [Axis] 2026 Finite-Lived Intangible Asset, Expected Amortization, Year Five Number of directors Number Of Directors Number of directors. Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Auditor Firm ID Auditor Firm ID Accrued environmental remediation, net Increase (Decrease) in Regulatory Liabilities Investment in Double E equity method investee Payments to Acquire Equity Method Investments Other Restructuring Charges Other Restructuring Costs Class of Stock [Line Items] Class of Stock [Line Items] Credit Facility Credit Facility [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name Finite-Lived Intangible Assets, Major Class Name [Domain] Entity Address, Address Line One Entity Address, Address Line One Phantom Share Units And Associated Distribution Equivalent Rights Phantom Share Units And Associated Distribution Equivalent Rights [Member] Phantom Share Units And Associated Distribution Equivalent Rights Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Entity Address, Address Line Two Entity Address, Address Line Two Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Less accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Series A Preferred Units (143,447 and 162,109 units issued and outstanding at December 31, 2021 and December 31, 2020, respectively) Preferred Units, Preferred Partners' Capital Accounts Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] 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 Interest rate (as a percent) Debt Instrument, Interest Rate During Period General and administrative expense General and Administrative Expense [Member] Noncontrolling Interest and Mezzanine Capital Consolidation, Policy [Policy Text Block] Entity Shell Company Entity Shell Company Proportional adjusted EBITDA for equity method investees Adjusted Earnings Before Interest Taxes Depreciation And Amortization Proportional Equity Method Investment Adjustment Adjusted earnings before interest, taxes, depreciation, and amortization, proportional equity method investment adjustment. Total current liabilities Current liabilities Liabilities, Current Class of Stock Class of Stock [Domain] DEFERRED REVENUE Contract With Customer Liability Disclosure [Text Block] Contract with customer liability disclosure. Cash paid to Acquire investment Payments to Acquire Businesses, Gross Revenue From Contract With Customer [Table] Revenue From Contract With Customer [Table] Revenue from contract with customer. Operating cash outflows from finance leases Finance Lease, Interest Payment on Liability Borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Loss Contingencies [Table] Loss Contingencies [Table] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Common unit - basic (in dollars per share) Net Income (Loss), Per Outstanding Limited Partnership Unit, Basic, Net of Tax 2025 Senior Notes Senior Notes Due April Twenty Twenty Five [Member] Senior notes due April twenty twenty five. Current Fiscal Year End Date Current Fiscal Year End Date Transfers out Contract with Customer, Asset, Reclassified to Receivable Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Debt Instrument, Name Debt Instrument, Name [Domain] Statement [Table] Statement [Table] Other current assets Other Assets, Current Accrued environmental remediation, beginning balance Accrued environmental remediation, ending balance Accrual for Environmental Loss Contingencies Useful lives of Property, Plant and Equipment Schedule Of Property Plant And Equipment Useful Life Table [Table Text Block] Schedule of property plant and equipment useful life. Partners Capital Partners' Capital [Abstract] New Accounting Standards Implemented in this Annual Report New Accounting Pronouncements, Policy [Policy Text Block] Accrued, Beginning Balance Accrued, Ending Balance Restructuring and Related Cost, Cost Incurred to Date Thereafter Lessee Operating Lease Liability Payments Due After Year Six Lessee operating lease liability payments due after year six. Unrecognized unit-based compensation Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Debt Instrument, Redemption, Period Debt Instrument, Redemption, Period [Domain] Credit Agreement Credit Agreement [Member] Credit agreement. Statistical Measurement Statistical Measurement [Axis] Accounts Receivable Accounts Receivable [Policy Text Block] Subsequent Event Subsequent Event [Member] Finance Finance Lease, Liability, Noncurrent Future minimum lease payments due and future minimum rentals to be received under noncancelable leases and subleases Schedule Of Future Minimum Rental Payments For Finance And Operating Leases And Sublease Income Table [Table Text Block] Schedule of future minimum rental payments for finance and operating leases and sublease income. Proceeds from asset sale Proceeds From Sale Of Assets Proceeds from sale of assets. Intangible assets, net Net Finite-Lived Intangible Assets, Net Early extinguishment of debt Extinguishment of Debt, Amount Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Recognized amortization expense in other revenues and cost and expenses Schedule Of Recognized Amortization Income Expense Table [Table Text Block] Tabular disclosure of amortization income or expense recognized during the period on finite-lived intangible assets and noncurrent liability. Gathering services and related fees Natural Gas, Gathering, Transportation, Marketing and Processing [Member] 2022 Senior Notes Senior Notes Due 2022 [Member] Senior Notes due 2022 Secured Notes Indenture, 2026 Secured Notes Indenture, 2026 [Member] Secured Notes Indenture, 2026 Ad valorem taxes payable Increase (Decrease) in Property and Other Taxes Payable Debt issue costs Write off of Deferred Debt Issuance Cost Interest in partnership per unit (in dollars per share) Distribution Made to Limited Partner, Distributions Paid, Per Unit Adjustments to reconcile net income (loss) to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Subsequent Event Type Subsequent Event Type [Axis] Phantom Units Phantom Share Units (PSUs) [Member] Operating lease cost (included in general and administrative expense) Operating Lease, Cost 2025 Senior Notes Two Thousand Twenty Five Senior Notes [Member] Two thousand twenty five senior notes. Concentration Risk Benchmark Concentration Risk Benchmark [Axis] Debt Instrument, Redemption, Period Debt Instrument, Redemption, Period [Axis] Legal fines and other fees Accrual for Environmental Loss Contingencies, Charges to Expense for New Losses Increase in loss contingency accrual Loss Contingency Accrual, Period Increase (Decrease) Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Natural Gas Liquids [Member]