Statement of Cash Flows [Abstract] Cash Flows from Operating Activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Deferred income taxes Deferred Income Tax Expense (Benefit) Equity in earnings of equity method affiliates, net of distributions Income (Loss) from Equity Method Investments, Net of Dividends or Distributions Equity based compensation Share-based Compensation Changes in other assets and liabilities: Increase (Decrease) in Other Operating Assets and Liabilities, Net [Abstract] Accounts receivable, net Increase (Decrease) in Accounts Receivable Accounts receivable—affiliated companies Increase (Decrease) in Accounts Receivable, Related Parties Inventory Increase (Decrease) in Inventories Gas imbalance assets Increase (Decrease) in Gas Balancing Receivable Income taxes receivable Increase (Decrease) in Income Taxes Receivable Other current assets Increase (Decrease) in Other Current Assets Other assets Increase (Decrease) in Other Operating Assets Accounts payable Increase (Decrease) in Accounts Payable Accounts payable—affiliated companies Increase (Decrease) in Accounts Payable, Related Parties Gas imbalance liabilities Increase (Decrease) in Gas Imbalance Liabilities Increase (Decrease) in Gas Imbalance Liabilities Other current liabilities Increase (Decrease) in Other Current Liabilities Other liabilities Increase (Decrease) in Other Operating Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash Flows from Investing Activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Capital expenditures Payments to Acquire Productive Assets Increase in notes receivable—affiliated companies Increase (Decrease) in Notes Receivable, Related Parties Return of investment in equity method affiliates Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital Other, net Payments for (Proceeds from) Other Investing Activities Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Cash Flows from Financing Activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Repayment of Term Loans Repayments of Medium-term Notes Proceeds from long term debt, net of issuance costs Proceeds from Issuance of Long-term Debt Proceeds from revolving credit facility Proceeds from Lines of Credit Repayment of revolving credit facility Repayments of Long-term Lines of Credit Decrease of notes payable—affiliated companies Repayments of Related Party Debt Repayment of advance with affiliated companies Payments for Advance to Affiliate Capital contributions from partners Proceeds from Partnership Contribution Distributions to partners Payments of Ordinary Dividends, Noncontrolling Interest Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Net Increase in Cash and Cash Equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and Cash Equivalents at Beginning of Period Cash and Cash Equivalents, at Carrying Value Cash and Cash Equivalents at End of Period Supplemental Disclosure of Cash Flow Information: Supplemental Cash Flow Information [Abstract] Interest, net of capitalized interest Interest Paid, Net Income taxes (refunds), net Income Taxes Paid, Net Accounts payable related to capital expenditures Capital Expenditures Incurred but Not yet Paid Issuance of common units upon interest acquisition of SESH (Note 7) Common Units Issued, Interest Acquisition Common Units Issued, Interest Acquisition Equity Method Investments and Joint Ventures [Abstract] Statement [Table] Statement [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Investments in Equity Method Affiliates Investments in Equity Method Affiliates [Member] Investments in Equity Method Affiliates [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Senior Notes Due August 2014 [Member] Senior Notes Due August 2014 [Member] Senior Notes Due August 2014 [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Senior Notes Senior Notes [Member] Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Domain] Investment, Name [Domain] SESH SESH [Member] SESH [Member] Legal Entity of Counterparty, Type [Axis] Legal Entity of Counterparty, Type [Axis] Legal Entity Type of Counterparty [Domain] Legal Entity Type of Counterparty [Domain] CenterPoint CenterPoint [Member] CenterPoint [Member] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Statement [Line Items] Statement [Line Items] Ownership percentage Equity Method Investment, Ownership Percentage Interstate natural gas pipeline length Interstate Natural Gas Pipeline Length Interstate Natural Gas Pipeline Length Distributed ownership percentage Equity Method Investment, Ownership Percentage, Distributed Equity Method Investment, Ownership Percentage, Distributed Limited partner ownership interest, exercisable as early as May 2014 Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest, Exercisable As Early As May 2014 Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest, Exercisable As Early As May 2014 Face amount Debt Instrument, Face Amount Equity Method Investment, Distributed Proceeds from Equity Method Investment, Dividends or Distributions Equity Method Investments Equity Method Investments Limited partner units that may be issued, exercisable as early as May 2014 Limited Partners' Capital Account, Units Issued, Exercisable As Early As May 2014 Limited Partners' Capital Account, Units Issued, Exercisable As Early As May 2014 Limited partner units that may be issued, exercisable as early as May 2015 Limited Partners' Capital Account, Units Issued, Exercisable As Early As May 2015 Limited Partners' Capital Account, Units Issued, Exercisable As Early As May 2015 Limited partner ownership interest, exercisable as early as May 2015 Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest, Exercisable As Early As May 2015 Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest, Exercisable As Early As May 2015 Distribution to limited partner in third quarter, ended September 30, 2014 Limited Patners' Capital Account, Distribution To Limited Partner Future Period Limited Patners' Capital Account, Distribution To Limited Partner Future Period Schedule of Investments Detail Schedule of Investments in and Advances to Affiliates, Schedule of Investments [Table Text Block] Investments in Equity Method Affiliates Equity Method Investments and Joint Ventures Disclosure [Text Block] Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Other Income (Expense) Other Income (Expense) [Member] Other Income (Expense) [Member] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Gathering and Processing Gathering and Processing [Member] Gathering and Processing [Member] Transportation and Storage Transportation and Storage [Member] Transportation and Storage [Member] Eliminations Intersegment Eliminations [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Revenues Natural Gas Midstream Revenue Cost of goods sold, excluding depreciation and amortization Natural Gas Midstream Costs Operation and maintenance Utilities Operating Expense, Maintenance and Operations Taxes other than income tax Taxes, Other Operating income Operating Income (Loss) Total assets Assets Capital expenditures Equity in earnings of equity method affiliates Income (Loss) from Equity Method Investments Investment in equity method affiliates Equity Method Investment, Ownership Interest, Contributed by Limited Partner, Percentage Equity Method Investment, Ownership Interest, Contributed by Limited Partner, Percentage Equity Method Investment, Ownership Interest, Contributed by Limited Partner, Percentage Earnings Per Share [Abstract] Schedule Of Earnings Per Unit For Common And Subordinated Limited Partner Units [Table Text Block] Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Business Combinations [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Limited Partners' Capital Account by Class [Axis] Limited Partners' Capital Account by Class [Axis] Limited Partners' Capital Account, Class [Domain] Limited Partners' Capital Account, Class [Domain] Common Units Common Unit [Member] Common Unit [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Weighted Average [Member] Weighted Average [Member] OGE Energy OGE Energy [Member] OGE Energy [Member] ArcLight ArcLight group [Member] ArcLight Group [Member] Partner Type [Axis] Partner Type [Axis] Partner Type of Partners' Capital Account, Name [Domain] Partner Type of Partners' Capital Account, Name [Domain] Partners’ Capital Limited Partner [Member] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Enogex Enogex LLC [Member] Enogex LLC [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Units outstanding Partners' Capital Account, Units, Acquisitions Percentage of interest acquired Business Acquisition, Percentage of Voting Interests Acquired Useful life of property, plant and equipment Property, Plant and Equipment, Useful Life Assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract] Current Assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets Property, plant and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Goodwill Goodwill Other intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Other assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets Total assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract] Current liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities Long-term debt Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt Other liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other Total liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities Less: Noncontrolling interest at fair value Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value Fair value of consideration transferred Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest Business Combination, Revenues And Net Income [Abstract] Business Combination, Revenues And Net Income [Abstract] Business Combination, Revenues And Net Income [Abstract] Net income attributable to Enable Midstream Partners, LP Net Income (Loss) Attributable to Parent Income Statement [Abstract] Subordinated Units Subordinated Unit [Member] Subordinated Units [Member] Revenues (including revenues from affiliates (Note 11)) Cost of Goods Sold, excluding depreciation and amortization (including expenses from affiliates (Note 11)) Operating Expenses: Operating Expenses [Abstract] Operation and maintenance (including expenses from affiliates (Note 11)) Operations And Maintenance Expense Operations And Maintenance Expense Taxes other than income taxes Total Operating Expenses Operating Expenses Operating Income Other Income (Expense): Other Income and Expenses [Abstract] Interest expense (including expenses from affiliates (Note 11)) Interest Expense Interest income—affiliated companies Interest Income, Related Party Other, net Other Nonoperating Income (Expense) Total Other Income (Expense) Nonoperating Income (Expense) Income Before Income Taxes Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Income tax expense (benefit) Income Tax Expense (Benefit) Net Income Less: Net income attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Net Income attributable to Enable Midstream Partners, LP Net Income (Loss) Allocated to Limited Partners Net Income (Loss) Allocated to Limited Partners Basic and diluted earnings per unit (Note 4) (in dollars per unit) Net Income (Loss), Per Outstanding Limited Partnership and General Partnership Unit, Basic and Diluted, Net of Tax Equity [Abstract] Distributions Made to Limited Partner [Table] Distributions Made to Limited Partner [Table] Maximum Maximum [Member] Distribution Subordination Period 1 Distribution Subordination Period 1 [Member] Distribution Subordination Period 1 [Member] Distribution Subordination Period 2 Distribution Subordination Period 2 [Member] Distribution Subordination Period 2 [Member] Distribution Made to Limited Partner [Line Items] Distribution Made to Limited Partner [Line Items] Limited partners' capital account, distribution amount Limited Partners' Capital Account, Distribution Amount Limited partners' capital account, required quarterly distribution period Limited Partners' Capital Account, Required Quarterly Distribution Period Limited Partners' Capital Account, Required Quarterly Distribution Period Limited partners' capital account, incentive distribution rights, percentage Partners' Capital Account, Incentive Distribution Rights, Percentage Partners' Capital Account, Incentive Distribution Rights, Percentage Minimum quarterly distribution per common unit Subordination Period, Minimum Quarterly Distribution per Common Unit Subordination Period, Minimum Quarterly Distribution per Common Unit Incentive distribution, distribution per unit Partners' Capital Account, Incentive Distribution Rights, Phase In Threshold Partners' Capital Account, Incentive Distribution Rights, Phase In Threshold Limited partners' capital account, minimum annualized quarterly distribution per unit Subordination Period, Minimum Annualized Quarterly Distribution per Unit Subordination Period, Minimum Annualized Quarterly Distribution per Unit Limited partners' capital account, maximum annualized quarterly distribution per unit Subordination Period, Maximum Annualized Quarterly Distribution per Unit Subordination Period, Maximum Annualized Quarterly Distribution per Unit Limited partners capital account, minimum quarterly distribution, annualized Subordination Period, Annualized Quarterly Distribution, Maximum Minimum Ratio Subordination Period, Annualized Quarterly Distribution, Maximum Minimum Ratio Schedule Of Equity Transactions With Limited Partner Distributions Made to Limited Partner, by Distribution [Table Text Block] Pro forma revenues Business Acquisition, Pro Forma Revenue Pro forma operating income Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax Pro forma net income Business Acquisition, Pro Forma Net Income (Loss) Pro forma net income attributable to Enable Midstream Partners, LP Business Acquisition, Pro Forma Net Income (Loss), Attributable to Parent Business Acquisition, Pro Forma Net Income (Loss), Attributable to Parent Derivative Instruments and Hedging Activities Disclosure [Abstract] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Energy [Axis] Energy [Axis] Energy [Domain] Energy [Domain] Natural gas Natural Gas [Member] Derivative, by Nature [Axis] Derivative, by Nature [Axis] Derivative, Name [Domain] Derivative, Name [Domain] Financial futures/swaps Financial Futures Swaps [Member] Financial Futures Swaps [Member] Physical purchases/sales Physical Sales Purchases [Member] Physical Sales Purchases [Member] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Other Current Assets Other Current Assets [Member] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Assets, Fair Value Derivative Asset Liabilities, Fair Value Derivative Liability Related Party Transactions [Abstract] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Related Party Transaction [Axis] Related Party Transaction [Axis] Related Party Transaction [Domain] Related Party Transaction [Domain] Gas Transportation and Storage Gas Transportation and Storage [Member] Gas Transportation and Storage [Member] Gas Sales Gas Sales [Member] Gas Sales [Member] Seconded Employee Costs Seconded Employee Costs [Member] Seconded Employee Costs [Member] Corporate Services Corporate Services [Member] Corporate Services [Member] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Revenues from affiliated companies Revenue from Related Parties Cost of goods sold from affiliate Related Parties Amount in Cost of Sales Charges to the Partnership by affiliates Related Party Transaction, Expenses from Transactions with Related Party Statement of Partners' Capital [Abstract] Partner Capital Components [Axis] Partner Capital Components [Axis] Partner Capital Components [Domain] Partner Capital Components [Domain] Parent Net Investment Parent [Member] Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Income (Loss) [Member] Total Enable Midstream Partners, LP Partners’ Capital Enable Midstream Partners [Member] Enable Midstream Partners [Member] Noncontrolling Interest Noncontrolling Interest [Member] Changes in Partners' Capital Increase (Decrease) in Partners' Capital [Roll Forward] Balance, beginning of period Partners' Capital, Including Portion Attributable to Noncontrolling Interest Balance, beginning of period, units Partners' Capital Account, Units Contributions from (Distributions to) CenterPoint Energy prior to formation (Note 5) Conversion to a limited partnership, units Partners' Capital Account, Units, Converted Conversion to a limited partnership Partners' Capital Account, Exchanges and Conversions Issuance of IPO common units, units Partners' Capital Account, Units, Sold in Public Offering Issuance of IPO common units Partners' Capital Account, Public Sale of Units Issuance of units upon acquisition, units Issuance of units upon acquisition Partners' Capital Account, Acquisitions Distributions to partners Partners' Capital Account, Distributions Equity based compensation, units Partners' Capital Account, Units, Unit-based Compensation Equity based compensation Partners' Capital Account, Unit-based Compensation Balance, end of period, units Balance, end of period Fair Value Disclosures [Abstract] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Carrying Amount Reported Value Measurement [Member] Fair Value Estimate of Fair Value Measurement [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 2 Fair Value, Inputs, Level 2 [Member] Long-term notes payable - affiliated companies (Level 2) Notes Payable, Other Payables [Member] Revolving Credit Facility (Level 2) Revolving Credit Facility [Member] Term Loan Facility (Level 2) Term Loan [Member] Term Loan Enable Oklahoma Term Loan (Level 2) Enable Oklahoma Term Loan [Member] Enable Oklahoma Term Loan [Member] Enable Oklahoma Senior Notes (Level 2) Enable Oklahoma Senior Notes [Member] Enable Oklahoma Senior Notes [Member] Enable Midstream Partners, LP 2019, 2024 and 2044 Notes (Level 2) Enable Midstream Partners 2019, 2024 and 2044 Notes [Member] Enable Midstream Partners 2019, 2024 and 2044 Notes [Member] Affiliated Companies Affiliated Entity [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Carrying Amount Long-term Debt Fair Value Long-term Debt, Fair Value Carrying value Commercial Paper, at Carrying Value Current portion of long-term debt Long-term Debt, Current Maturities Schedule of Derivative Instruments Schedule of Derivative Instruments [Table Text Block] Schedule of Derivative Assets at Fair Value Schedule of Derivative Assets at Fair Value [Table Text Block] Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Derivative Instruments, Gain (Loss) [Table Text Block] Schedule of Financial Data for Business Segments and Services Schedule of Segment Reporting Information, by Segment [Table Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] Long Term Incentive Plan Long Term Incentive Plan [Member] Long Term Incentive Plan [Member] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Performance units Performance Shares [Member] Restricted units Restricted Stock Units (RSUs) [Member] Phantom units Phantom Share Units (PSUs) [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Number of units that may be delivered pursuant to vested awards Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Total compensation expense Units granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Award cycle Share-based Compensation Arrangement by Share-based Payment Award, Award Cycle Share-based Compensation Arrangement by Share-based Payment Award, Award Cycle Average volatility period Share-based Compensation Arrangement by Share-based Payment Award, Average Volatility Period Share-based Compensation Arrangement by Share-based Payment Award, Average Volatility Period Fair value of units granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Expected price volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Expected life of units (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Organization, Consolidation and Presentation of Financial Statements [Abstract] Summary of Significant Accounting Policies Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Condensate Oil [Member] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Gain (Loss) on derivative, net Derivative, Gain (Loss) on Derivative, Net Cash collateral required if ratings are lowered Additional Collateral, Aggregate Fair Value Income Tax Disclosure [Abstract] Schedule of Components of Income Tax Expense (Benefit) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Title of Individual [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Relationship to Entity [Domain] Certain Partnership Employees Certain Partnership Employees [Member] Certain Partnership Employees [Member] Accounting Changes and Error Corrections [Abstract] New Accounting Pronouncements New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Enable Midstream Partners, LP Parent Net Equity and Partners' Capital Partners' Capital Notes Disclosure [Text Block] Chief Executive Officer Chief Executive Officer [Member] Executive Officer Executive Officer [Member] Chief Financial Officer Chief Financial Officer [Member] Vesting [Axis] Vesting [Axis] Vesting [Domain] Vesting [Domain] Percentage Based Vesting Percentage Based Vesting [Member] Percentage Based Vesting [Member] Equal Annual Based Vesting Equal Annual Based Vesting [Member] Equal Annual Based Vesting [Member] Vesting on February 1, 2016 Vesting on February 1, 2016 [Member] Vesting on February 1, 2016 [Member] Vesting on August 1, 2014 Vesting on August 1, 2014 [Member] Vesting on August 1, 2014 [Member] Vesting on February 1, 2015 Vesting on February 1, 2015 [Member] Vesting on February 1, 2015 [Member] Vesting on February 1, 2017 Vesting on February 1, 2017 [Member] Vesting on February 1, 2017 [Member] Vesting on March 1, 2015 Vesting on March 1, 2015 [Member] Vesting on March 1, 2015 [Member] Vesting on March 1, 2016 Vesting on March 1, 2016 [Member] Vesting on March 1, 2016 [Member] Vesting percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage CenterPoint and OGE Energy CenterPoint and OGE Energy [Member] CenterPoint and OGE Energy [Member] Certain Services and Support Functions Certain Services and Support Functions [Member] Certain Services and Support Functions [Member] 2.10% Note Payable 2.10 Percent Note Payable [Member] 2.10 Percent Note Payable [Member] 2.45% Note Payable 2.45 Percent Note Payable [Member] 2.45 Percent Note Payable [Member] Partnership's revenues from affiliated companies as a percent of total revenues Revenue From Related Party As Percent of Total Revenue Revenue From Related Party As Percent of Total Revenue Period notice of termination prior to commencement of succeeding annual period Period Notice of Termination Prior to Commencement of Succeeding Annual Period Period Notice of Termination Prior to Commencement of Succeeding Annual Period Period notice of termination for reimbursements for all employee costs Period Notice Of Termination For Reimbursements For All Employee Costs Period Notice Of Termination For Reimbursements For All Employee Costs Expense reimbursement annual caps Related Party Transactions, Expense Reimbursement Annual Caps Related Party Transactions, Expense Reimbursement Annual Caps Notes payable—affiliated companies Notes Payable, Related Parties, Noncurrent Fixed interest rate Debt Instrument, Interest Rate, Stated Percentage Affiliate interest expense Interest Expense, Related Party Earnings Per Limited Partner Unit Earnings Per Share [Text Block] Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Other Assets Other Assets [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Revolving Credit Facility Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] LIBOR London Interbank Offered Rate (LIBOR) [Member] 2.400% Senior Notes 2.400 Percent Senior Notes [Member] 2.400 Percent Senior Notes [Member] 3.900% Senior Notes 3.900 Percent Senior Notes [Member] 3.900 Percent Senior Notes [Member] 5.000% Senior Notes 5.000 Percent Senior Notes [Member] 5.000 Percent Senior Notes [Member] 6.875% Senior Notes 6.875% Senior Notes [Member] 6.875% Senior Notes [Member] 6.25% Senior Notes 6.25% Senior Notes [Member] 6.25% Senior Notes [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Proceeds from issuance of debt Proceeds from Issuance of Debt Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Letters of credit principal advances Letters of Credit, Principal Advances Letters of Credit, Principal Advances Letters of credit outstanding amount Letters of Credit Outstanding, Amount Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Unused capacity, commitment fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Commercial paper, authorized Commercial Paper, Authorized Commercial Paper, Authorized Unamortized debt expense Unamortized Debt Issuance Expense Unamortized premium Debt Instrument, Unamortized Premium Losses on extinguishment of debt Gains (Losses) on Extinguishment of Debt Accounting Policies [Abstract] Subsidiary, Sale of Stock [Axis] Subsidiary, Sale of Stock [Axis] Sale of Stock, Name of Transaction [Domain] Sale of Stock, Name of Transaction [Domain] IPO IPO [Member] Over-Allotment Option Over-Allotment Option [Member] Over-Allotment Option [Member] Atoka Atoka Midstream LLC [Member] Atoka Midstream LLC [Member] Limited partner ownership interest Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest Common units issued during period (in shares) Stock Issued During Period, Shares, New Issues Initial public offering price (in dollars per share) Sale of Stock, Price Per Share Units outstanding Limited Partners' Capital Account, Units Outstanding Minimum percentage of vote required by all unitholders Unitholders, Minimum Vote Required, Percentage Minimum percentage of vote by all unitholders required Percentage share of management rights Percentage Share of Management Rights Percentage Share of Management Rights Percentage share of incentive distribution rights Percent of Incentive Distribution Rights Percent of Incentive Distribution Rights Income tax benefit Conversion ratio Stockholders' Equity Note, Stock Split, Conversion Ratio Net proceeds from sale of common units, net of underwriting discounts, commissions, and other related expenses Proceeds From Issuance of Stock, Net of Costs And Discounts Proceeds From Issuance of Stock, Net of Costs And Discounts Conversion of stock, common units converted (in shares) Conversion of Stock, Shares Converted Cash Proceeds From Limited Partner, Cash Proceeds From Limited Partner, Cash Pension and postretirement plans Proceeds From Limited Partner, Pension And Postretirement Plans Proceeds From Limited Partner, Pension And Postretirement Plans Deferred financing cost Proceeds From Limited Partner, Deferred Financing Cost Proceeds From Limited Partner, Deferred Financing Cost Investment in 25.05% of SESH (see Note 7) Equity Method Investment, Distributed Equity Method Investment, Distributed Income tax obligations, net Proceeds From Limited Partner, Income Tax Obligations, Net Proceeds From Limited Partner, Income Tax Obligations, Net Net distributions to CenterPoint Energy prior to formation Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Number of Units Outstanding at 12/31/2013 Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Number of Units Outstanding at 06/30/2014 Aggregate Intrinsic Value, Units Outstanding at 6/30/2014 Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding Number of Units Fully Vested at 6/30/2014 Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested, Number, Ending Balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested, Number, Ending Balance Aggregate Intrinsic Value, Units Fully Vested at 06/30/2014 Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested Reportable Business Segments Segment Reporting Disclosure [Text Block] Equity Based Compensation Shareholders' Equity and Share-based Payments [Text Block] Acquisition of Enogex Business Combination Disclosure [Text Block] Income Tax Contingency [Table] Income Tax Contingency [Table] Income Tax Contingency [Line Items] Income Tax Contingency [Line Items] Provision (benefit) for current income taxes Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal Current Federal Tax Expense (Benefit) State Current State and Local Tax Expense (Benefit) Total provision (benefit) for current income taxes Current Income Tax Expense (Benefit) Provision (benefit) for deferred income taxes, net Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal Deferred Federal Income Tax Expense (Benefit) State Deferred State and Local Income Tax Expense (Benefit) Total provision (benefit) for deferred income taxes, net Total income tax expense (benefit) Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Customer Relationships Customer Relationships [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Intangible assets Finite-Lived Intangible Assets, Gross Weighted average useful life Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Amortization of intangible assets Amortization of Intangible Assets Related Party Transactions Related Party Transactions Disclosure [Text Block] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Commodity Contracts Commodity Contract [Member] Gas Imbalances Gas Imbalances [Member] Gas Imbalances [Member] Fair Value by Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Recurring Measurement Fair Value, Measurements, Recurring [Member] Level 1 Fair Value, Inputs, Level 1 [Member] Netting adjustments Netting [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Assets Assets, Fair Value Disclosure, Recurring Liabilities Liabilities, Fair Value Disclosure, Recurring Fuel Reserves for Under Retained Fuel Due From Shippers Fuel Reserves for Under Retained Fuel Due From Shippers Fuel Reserves for Under Retained Fuel Due From Shippers Fuel Reserves For Over Retained Fuel Due To Shippers Fuel Reserves For Over Retained Fuel Due To Shippers Fuel Reserves For Over Retained Fuel Due To Shippers Disclosure of Share-based Compensation Arrangements by Share-based Payment Award Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] Schedule of Valuation Assumptions Schedule of Share-Based Payment Award, Valuation Assumptions [Table Text Block] Schedule of Share-Based Payment Award, Valuation Assumptions [Table Text Block] Restricted Units, Grants in Period And Grant Date Fair Value Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Restricted Units, Grants in Period And Grant Date Fair Value [Table Text Block] Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Restricted Units, Grants in Period And Grant Date Fair Value [Table Text Block] Phantom Units, Grants in Period And Grant Date Fair Value [Table Text Block] Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Phantom Units, Grants in Period And Grant Date Fair Value [Table Text Block] Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Phantom Units, Grants in Period And Grant Date Fair Value [Table Text Block] Schedule of Share-based Compensation, Activity Schedule of Share-based Compensation, Activity [Table Text Block] Schedule of Unrecognized Compensation Cost, Nonvested Awards Schedule of Unrecognized Compensation Cost, Nonvested Awards [Table Text Block] Intangible Assets, Net Intangible Assets Disclosure [Text Block] Fair Value Measurements Fair Value Disclosures [Text Block] Unrecognized Compensation Cost (In millions) Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Weighted Average to be Recognized (In years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Shares available for issuance Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Investment in Equity Method Affiliates: Equity Method Investment, Summarized Financial Information, Assets [Abstract] Investments in and Advances to Affiliates, at Fair Value [Roll Forward] Investments in and Advances to Affiliates, at Fair Value [Roll Forward] Balance as of December 31, 2013 Interest acquisition of SESH Return of investment from SESH refinancing Distributions from unconsolidated affiliates Balance as of June 30, 2014 Equity in Earnings of Equity Method Affiliates: Equity Method Investment Summarized Financial Information, Equity [Abstract] Distributions from Equity Method Affiliates: Equity Method Investment, Financial Statement, Reported Amounts [Abstract] Distributions from unconsolidated affiliates Operating revenues Equity Method Investment, Summarized Financial Information, Revenue Operating income Equity Method Investment, Summarized Financial Information, Operating Income Equity Method Investment, Summarized Financial Information, Operating Income Net income Equity Method Investment, Summarized Financial Information, Net Income (Loss) Statement of Comprehensive Income [Abstract] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Other comprehensive income Other Comprehensive Income (Loss), Net of Tax Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Less: Comprehensive income attributable to noncontrolling interest Comprehensive (Income) Loss, Net of Tax, Attributable to Noncontrolling Interest Comprehensive income attributable to Enable Midstream Partners, LP Comprehensive Income (Loss), Net of Tax, Attributable to Parent Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of Fair Value and Carrying Amount of Financial Instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Schedule of Assets Acquired and Liabilities Assumed Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Pro Forma Information Business Acquisition, Pro Forma Information [Table Text Block] Subsequent Events [Abstract] Subsequent Events Subsequent Events [Text Block] Organization Consolidation, Policy [Policy Text Block] Basis of Presentation Basis of Accounting [Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Dilutive effect of unit-based awards (less than $0.01 per unit during the three and six months ended June 30, 2014) Antidilutive Securities Excluded from Computation of Net Income, Per Outstanding Unit, Amount Less general partner interest in net income Net Income (Loss) Allocated to General Partners Net income attributable to Enable Midstream Partners, LP Basic and diluted weighted average number of outstanding limited partner units Weighted Average Number Of Outstanding Limited Partner Units, Basic And Diluted [Abstract] Weighted Average Number Of Outstanding Limited Partner Units, Basic And Diluted [Abstract] Basic and diluted weighted average number of outstanding limited partner units (in units) Weighted Average Number of Limited Partnership and General Partnership Unit Outstanding, Basic and Diluted Basic and diluted earnings per limited partner unit Earnings Per Limited Partner Unit, Basic And Diluted [Abstract] Earnings Per Limited Partner Unit, Basic And Diluted [Abstract] Basic and diluted earnings per unit (in dollars per unit) Income Taxes Income Tax Disclosure [Text Block] Document and Entity Information [Abstract] Document and Entity Information [Abstract] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Entity Filer Category Entity Filer Category Current Fiscal Year End Date Current Fiscal Year End Date Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Derivative [Table] Derivative [Table] Natural gas liquids Natural Gas Liquids [Member] Physical Physical [Member] Physical [Member] Fixed futures/swaps Fixed Swaps Futures [Member] Fixed Swaps Futures [Member] Basis futures/swaps Basic Swaps Futures [Member] Basic Swaps Futures [Member] Futures/swaps Futures, Swaps [Member] Futures, Swaps [Member] Position [Axis] Position [Axis] Position [Domain] Position [Domain] Purchases Long [Member] Sales Short [Member] Derivative [Line Items] Derivative [Line Items] Derivative, gross notional volume (TBtu) Derivative, Nonmonetary Notional Amount, Energy Measure Derivative, gross notional volume (MMbl) Derivative, Nonmonetary Notional Amount, Volume Percent of contract with durations of one year or less Percent of Contract with Durations of One Year or Less Percent of Contract with Durations of One Year or Less Percent of contracts with durations of more than one year and less than two years Percent of Contracts With Durations of More Than One Year and Less Than Two Years Percent of Contracts Having Durations of More Than One Year and Less Than Two Years Percent of contracts having a duration of more than two years Percent of Contracts Having a Duration of More Than Two Years Percent of Contracts Having a Duration of More Than Two Years Debt Long-term Debt [Text Block] Schedule of Revenues from Related Parties Schedule of Revenues from Related Parties [Table Text Block] Schedule of Revenues from Related Parties [Table Text Block] Schedule of Natural Gas Purchased From Related Parties Schedule of Natural Gas Purchased From Related Parties [Table Text Block] Schedule of Natural Gas Purchased From Related Parties [Table Text Block] Schedule of Amounts Charged to Partnership by Related Parties Schedule of Amounts Charged to Partnership by Related Parties [Table Text Block] Schedule of Amounts Charged to Partnership by Related Parties [Table Text Block] Statement of Financial Position [Abstract] ASSETS Assets [Abstract] Current Assets: Assets, Current [Abstract] Cash and cash equivalents Accounts receivable Accounts Receivable, Net, Current Accounts receivable—affiliated companies Accounts Receivable, Related Parties, Current Inventory Inventory, Net Gas imbalances Gas Imbalance Asset The value of gas imbalance asset as of the end of the period. Other current assets Other Assets, Current Total current assets Assets, Current Property, Plant and Equipment: Property, Plant and Equipment, Net [Abstract] Property, plant and equipment Property, Plant and Equipment, Gross Less accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property, plant and equipment, net Property, Plant and Equipment, Net Other Assets: Other Assets, Noncurrent [Abstract] Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Other Other Assets, Miscellaneous, Noncurrent Total other assets Other Assets Total Assets LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity [Abstract] Current Liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Accounts payable—affiliated companies Accounts Payable, Related Parties, Current Taxes accrued Taxes Payable, Current Gas imbalances Gas Imbalance Liability The value of gas imbalance liability as of the end of the period. Other Other Liabilities, Current Total current liabilities Liabilities, Current Other Liabilities: Liabilities, Other than Long-term Debt, Noncurrent [Abstract] Accumulated deferred income taxes, net Deferred Tax Liabilities, Net, Noncurrent Regulatory liabilities Regulatory Liability, Noncurrent Other Other Liabilities, Noncurrent Total other liabilities Liabilities, Other than Long-term Debt, Noncurrent Long-Term Debt Commitments and Contingencies (Note 12) Commitments and Contingencies Partners’ Capital: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Enable Midstream Partners, LP Partners’ Capital Partners' Capital Noncontrolling interest Partners' Capital Attributable to Noncontrolling Interest Total Partners’ Capital Total Liabilities and Partners’ Capital Liabilities and Equity Subsequent Event [Table] Subsequent Event [Table] Subsequent Event [Line Items] Subsequent Event [Line Items] Repayments of senior notes Repayments of Long-term Debt Quarterly cash distribution declared (per common unit) Distribution Made to Limited Partner, Distributions Declared, Per Unit Distribution made to unitholders Distribution Made to Limited Partner, Cash Distributions Paid Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block]