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Regulatory Matters, Commitments, Contingencies And Environmental Liabilities Commitments and Contingencies Disclosure [Text Block] Related Party [Axis] Related Party [Axis] Stock Issued During Period, Shares, Dividend Reinvestment Plan Stock Issued During Period, Shares, Dividend Reinvestment Plan Series D Preferred Units [Member] Series D Preferred Units [Member] Series D Preferred Units [Member] Segments [Axis] Segments [Axis] Crude sales Oil and Gas [Member] Actuarial gain related to pensions and other postretirement benefits Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax Statistical Measurement [Domain] Statistical Measurement [Domain] LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Distributions to noncontrolling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Derivative Assets And Liabilities Derivative Instruments and Hedging Activities Disclosure [Text Block] Security Exchange Name Security Exchange Name Energy [Axis] Energy [Axis] Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Schedule of Environmental Exit Cost [Table] Schedule of Environmental Exit Cost [Table] Call Option [Member] Call Option [Member] Proceeds from borrowings Proceeds from Issuance of Long-term Debt Proceeds from Issuance of Long-term Debt OPERATING INCOME Operating Income (Loss) Debt issuance costs Payments of Debt Issuance Costs Total current liabilities Liabilities, Current Capital contributions from noncontrolling interests Partners' Capital Account, Contributions Environmental Exit Costs, Name of Property [Domain] Environmental Exit Costs, Name of Property [Domain] Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Derivative Liability, Fair Value, Amount Not Offset Against Collateral Derivative Liability, Fair Value, Amount Not Offset Against Collateral Non-current Accrued Environmental Loss Contingencies, Noncurrent Cash and Cash Equivalents, Unrestricted Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash Equivalents, Unrestricted Cash and Cash Equivalents, Policy [Policy Text Block] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Commitments and contingencies Commitments and Contingencies ASSETS Assets [Abstract] Accounting Policies [Abstract] Accounting Policies [Abstract] Entity Address, State or Province Entity Address, State or Province Accounts payable to related companies Due to Related Parties, Current Accounts payable Accounts Payable, Current ETO Credit Facility due December 2022 [Member] Credit Facility due December 2022 [Member] Credit Facility due December 2022 [Member] Accumulated Other Comprehensive Income Comprehensive Income (Loss) Note [Text Block] Derivative assets Derivative Asset, Current Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Losses on extinguishments of debt Gain (Loss) on Extinguishment of Debt Payments for Legal Settlements Payments for Legal Settlements Options - Puts [Member] Options - Puts [Member] Options - Puts [Member] EQUITY: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Sunoco LP $1.5 billion Revolving Credit Facility due July 2023 [Member] Sunoco LP $1.5 billion Revolving Credit Facility due July 2023 [Member] Sunoco LP $1.5 billion Revolving Credit Facility due July 2023 [Member] Derivative, Nonmonetary Notional Amount Derivative, Nonmonetary Notional Amount Customer [Axis] Customer [Axis] Forward Physical Contracts [Member] Forward Physical Contracts [Member] Forward Physical Contracts [Member] NGL and refined products transportation and services [Member] NGL and refined products transportation and services [Member] NGL and refined products transportation and services [Member] punitive damages punitive damages [Member] punitive damages Dilutive effect of equity-based compensation of subsidiaries (1) Dilutive Securities, Effect on Basic Earnings Per Share Hedging Designation [Domain] Hedging Designation [Domain] Basic income (loss) per Limited Partner unit Income (Loss) from Continuing Operations, Per Outstanding Limited Partnership Unit, Basic, Net of Tax Other non-current liabilities Other Liabilities, Noncurrent Natural gas, NGLs, and refined products Energy Related Inventory, Natural Gas in Storage Other Payments for (Proceeds from) Other Investing Activities Noncontrolling interests Partners' Capital Attributable to Noncontrolling Interest Stock Issued During Period, Value, Dividend Reinvestment Plan Stock Issued During Period, Value, Dividend Reinvestment Plan Commodity Derivatives - Refined Products [Member] Commodity Derivatives - Refined Products [Member] Commodity Derivatives - Refined Products [Member] Document Information [Table] Document Information [Table] Payments on margin deposit Derivative Asset, Collateral, Obligation to Return Cash, Offset Inventories Inventory, Net Inventory, Net Non Trading [Member] Non Trading [Member] Non Trading [Member] Measurement Frequency [Domain] Measurement Frequency [Domain] Inventory [Line Items] Inventory [Line Items] Environmental Exit Cost by Property [Axis] Environmental Exit Cost by Property [Axis] Contributions in aid of construction costs Proceeds from Contribution in Aid of Construction Business Acquisition [Axis] Business Acquisition [Axis] Capitalized Contract Cost, Amortization Capitalized Contract Cost, Amortization Commodity Derivatives - Natural Gas [Member] Commodity Derivatives - Natural Gas [Member] Commodity Derivatives - Natural Gas [Member] Inventory [Axis] Inventory [Axis] Statement [Line Items] Statement [Line Items] Deferred income taxes Increase (Decrease) in Deferred Income Taxes Class of Stock [Domain] Class of Stock [Domain] General Discussion of Derivative Instruments and Hedging Activities [Abstract] General Discussion of Derivative Instruments and Hedging Activities [Abstract] Commodity Derivatives (Margin Deposits) [Member] Commodity Derivatives (Margin Deposits) [Member] Commodity Derivatives (Margin Deposits) [Member] Long [Member] Long [Member] Contract with Customer, Duration [Domain] Contract with Customer, Duration [Domain] Limited Partners’ interest in net income (loss) Net Income (Loss) Allocated to Limited Partners Statement [Table] Statement [Table] Statistical Measurement [Axis] Statistical Measurement [Axis] Debt obligations, fair value Debt Instrument, Fair Value Disclosure Derivative Liability, Collateral, Right to Reclaim Cash, Offset Derivative Liability, Collateral, Right to Reclaim Cash, Offset Right Of Way [Member] Right Of Way [Member] Right Of Way [Member] (Narrative) [Abstract] (Narrative) [Abstract] (Narrative) [Abstract] Non-current derivative liabilities Derivative Liability, Noncurrent Line of Credit Facility, Fair Value of Amount Outstanding Line of Credit Facility, Fair Value of Amount Outstanding Business Combinations [Abstract] Distribution Type [Axis] Distribution Type [Axis] Entity Small Business Entity Small Business Distribution Type [Domain] Distribution Type [Domain] ETprC ETprC [Member] ETprC Basic Net Income (Loss), Per Outstanding Limited Partnership Unit, Basic, Net of Tax Debt Obligations Debt Disclosure [Text Block] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Amendment Flag Amendment Flag Reconciliation Of Net Income And Weighted Average Units Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Related To Deductibles Related To Deductibles [Member] Related To Deductibles [Member] Preferred Units, Issued Preferred Units, Issued Long-term Line of Credit Long-term Line of Credit Fair Value Measurement, Policy [Policy Text Block] Fair Value Measurement, Policy [Policy Text Block] NON-CASH INVESTING AND FINANCING ACTIVITIES: NON-CASH INVESTING ACTIVITIES [Abstract] NON-CASH INVESTING ACTIVITIES [Abstract] Net Cash Provided by (Used in) Operating Activities, Continuing Operations Net Cash Provided by (Used in) Operating Activities Distributions to noncontrolling interests Payments of Ordinary Dividends, Noncontrolling Interest Limited Partners: Limited Partners' Capital Account [Abstract] Entity Central Index Key Entity Central Index Key Related Party [Domain] Related Party [Domain] Line of Credit Facility, Current Borrowing Capacity Line of Credit Facility, Current Borrowing Capacity Measurement Frequency [Axis] Measurement Frequency [Axis] Document and Entity Information [Abstract] Document and Entity Information [Abstract] Document and Entity Information [Abstract] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Derivative assets and liabilities, net Increase (Decrease) in Risk Management Assets and Liabilities Derivative Instrument [Axis] Derivative Instrument [Axis] Environmental Exit Cost [Line Items] Environmental Exit Cost [Line Items] Financial Instruments [Domain] Financial Instruments [Domain] Fair Value, by Balance Sheet Grouping [Table Text Block] Fair Value, by Balance Sheet Grouping [Table Text Block] Amount of Gain/(Loss) Recognized in Income on Derivatives Derivative, Gain (Loss) on Derivative, Net Derivatives, Offsetting Fair Value Amounts [Table Text Block] Offsetting Assets [Table Text Block] Distributions on unvested awards Distributions On Unvested Unit Awards Total distributions to holders of unit awards that have not vested. Civil Penalties [Member] Civil Penalties [Member] Civil Penalties [Member] Cash And Cash Equivalents Cash Flow, Supplemental Disclosures [Text Block] Statement of Partners' Capital [Abstract] Statement of Partners' Capital [Abstract] Derivatives, Policy [Policy Text Block] Derivatives, Policy [Policy Text Block] Accrued capital expenditures Capital Expenditures Incurred but Not yet Paid Income taxes receivable Income Taxes Receivable, Current Actual Damages Actual Damages [Member] Actual Damages Contract with Customer, Duration [Axis] Contract with Customer, Duration [Axis] Gains (losses) on interest rate derivatives Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments AOCI attributable to equity method investments AOCI attributable to equity method investments AOCI attributable to equity method investments Early Repayment of Senior Debt Early Repayment of Senior Debt Segments [Domain] Segments [Domain] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Description of Interest Rate Derivative Activities Description of Interest Rate Derivative Activities Sunoco [Member] Sunoco [Member] Sunoco Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Axis] Income Statement Location [Axis] Income Statement Location [Axis] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Income Statement Location [Domain] Income Statement Location [Domain] Future [Member] Future [Member] SemCAMS C$300 million senior secured construction loan facility [Member] SemCAMS C$300 million senior secured construction loan facility [Member] SemCAMS C$300 million senior secured construction loan facility [Member] FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] Selling, general and administrative Selling, General and Administrative Expense Derivative, Notional Amount Derivative, Notional Amount July 2021 [Member] July 2021 [Member] July 2021 [Member] Series E Preferred Units [Member] Series E Preferred Units [Member] Series E Preferred Units [Member] Other non-current assets, net Other Assets, Noncurrent Reportable Segments Segment Reporting Disclosure [Text Block] Weighted average limited partner units, assuming dilutive effect of unvested unit awards Weighted Average Limited Partnership Units Outstanding, Diluted Total assets Assets Assets Related Party Transactions Related Party Transactions Disclosure [Text Block] Series C Preferred Units [Member] Series C Preferred Units [Member] Series C Preferred Units [Member] Scenario [Axis] Scenario [Axis] FGT [Member] FGT [Member] FGT [Member] Derivative liabilities Derivative Liability, Current Title of 12(b) Security Title of 12(b) Security Distribution Made to Limited Partner, Distributions Paid, Per Unit Distribution Made to Limited Partner, Distributions Paid, Per Unit Trading Activity, by Type [Axis] Trading Activity [Axis] Put Option [Member] Put Option [Member] Schedule Of Partners Capital [Table] Schedule Of Partners Capital [Table] Schedule Of Partners Capital [Table] Other Assets, Fair Value Disclosure Other Assets, Fair Value Disclosure Concentration Risk, Credit Risk, Policy [Policy Text Block] Concentration Risk, Credit Risk, Policy [Policy Text Block] Class of Warrant or Right [Axis] Class of Warrant or Right [Axis] Interest expense, net of interest capitalized Interest expense, net Interest Expense Adjusted EBITDA related to unconsolidated affiliates Adjusted EBITDA attributable to unconsolidated affiliates Proportionate amount contributed by an equity method investee to the segment performance measure. Crude Oil Energy Related Inventory, Crude Oil, Products and Merchandise Proceeds from the sale of other assets Proceeds from Sale of Productive Assets Product and Service [Axis] Product and Service [Axis] Current Accrued Environmental Loss Contingencies, Current Canada, Dollars Canada, Dollars Lease, Right of Use Asset, Net Lease, Right of Use Asset, Net Combined amount of lessee's right of use assets under both operating and finance leases. Partner Capital Components [Axis] Partner Capital Components [Axis] Power [Member] Power [Member] Power [Member] Loss Contingency, Damages Sought, Value Loss Contingency, Damages Sought, Value Supplemental Cash Flow Elements [Abstract] Supplemental Cash Flow Elements [Abstract] Other Segments [Member] Other Segments [Member] OTC Contracts [Member] OTC Contracts [Member] OTC Contracts [Member] Natural gas sales Oil and Gas, Refining and Marketing [Member] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Interstate Transportation and Storage [Member] Interstate Transportation and Storage [Member] Interstate Transportation and Storage [Member] Position [Domain] Position [Domain] Revenue Recognized Contract with Customer, Liability, Revenue Recognized Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Level 1 Fair Value, Inputs, Level 1 [Member] Inventories Increase (Decrease) in Inventories General Partner’s interest in net income (loss) Less: General Partner’s interest in income (loss) Net Income (Loss) Allocated to General Partners Accounts payable Increase (Decrease) in Accounts Payable Preferred Units by Name [Axis] Preferred Units by Name [Axis] Unrealized gains (losses) on commodity risk management activities Unrealized Gain (Loss) on Derivatives Debt Instrument [Axis] Debt Instrument [Axis] July 2022 [Member] July 2022 [Member] July 2022 [Member] Fair Value Hedging [Member] Fair Value Hedging [Member] Credit Derivatives Contract Type [Domain] Credit Derivatives Contract Type [Domain] Partner Type [Axis] Partner Type [Axis] Class of Stock [Line Items] Class of Stock [Line Items] Accrued and other current liabilities Increase (Decrease) in Accrued Liabilities Net change in operating assets and liabilities, net of effects of acquisitions Net change in operating assets and liabilities, net of effects of acquisitions Increase (Decrease) in Operating Capital Other, net Partners' Capital, Other Debt Obligations [Abstract] Debt Obligations [Abstract] Debt Obligations [Abstract] Reconciliation of 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] Total partners’ capital Partners' Capital Litigation Case [Axis] Litigation Case [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Hedged Item - Inventory (MMBtu) [Member] Hedged Item - Inventory (MMBtu) [Member] Hedged Item - Inventory (MMBtu) [Member] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Other Other, net Includes the sum total other income and expense amounts, net not seperately disclosed on the income statement and amortization of regulatory assets. Account Category Type [Axis] Account Category Type [Axis] Account Category Type [Axis] Series A Preferred Units [Member] Series A Preferred Units [Member] Series A Preferred Units [Member] Regulatory Matters, Commitments, Contingencies And Environmental Liabilities [Abstract] Regulatory Matters, Commitments, Contingencies And Environmental Liabilities [Abstract] REGULATORY MATTERS, COMMITMENTS, CONTINGENCIES, AND ENVIRONMENTAL LIABILITIES [Abstract] Common Units Common Units [Member] Common Units INCOME (LOSS) BEFORE INCOME TAX EXPENSE INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAX EXPENSE Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Forward Physical Swaps [Member] Forward Physical Swaps [Member] Forward Physical Swaps [Member] Equity Partners' Capital Notes Disclosure [Text Block] Preferred Units, Liquidation Spread, Percent Preferred Units, Liquidation Spread, Percent The percent spread above 3-month LIBOR per annum for the liquidation preference for certain preferred units. Letters of Credit Outstanding, Amount Letters of Credit Outstanding, Amount Cline Class Action Cline Class Action [Member] Cline Class Action Dilutive effect of unvested unit awards (1) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Property, plant and equipment Property, Plant and Equipment, Gross Common Unitholders Limited Partners' Capital Account Noncontrolling Interest Noncontrolling Interests [Member] Noncontrolling Interests [Member] Revenue [Policy Text Block] Revenue [Policy Text Block] Financial Information By Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] SPLP and Mid-Valley Pipeline [Member] SPLP and Mid-Valley Pipeline [Member] SPLP and Mid-Valley Pipeline [Member] Total AOCI, net of tax AOCI Including Portion Attributable to Noncontrolling Interest, Tax Income Statement [Abstract] Income Statement [Abstract] Trading [Member] Trading [Member] Trading [Member] AOCI Attributable to Parent [Member] AOCI Attributable to Parent [Member] Distributions to partners Distribution Made to Limited Partner, Cash Distributions Paid Partners' Capital Account, Unit-based Payment Arrangement, Number of Units Partners' Capital Account, Unit-based Payment Arrangement, Number of Units Fair Value Measurements [Abstract] Fair Value Measurements [Abstract] Fair value measurements abstract. Non-current operating lease liabilities Operating Lease, Liability, Noncurrent Revenue [Abstract] Revenue [Abstract] Revenue [Abstract] Sunoco LP [Member] Sunoco LP [Member] Sunoco LP [Member] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Lease assets obtained in exchange for new lease liabilities Right-of-Use Assets Obtained in Exchange for Liabilities Total amount of increases in right-of-use assets obtained in exchange for both operating and lease liabilities. Use of Estimates, Policy [Policy Text Block] Use of Estimates, Policy [Policy Text Block] USAC [Member] USAC [Member] USAC [Member] Stock Repurchase Program, Remaining Authorized Repurchase Amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Change in Accounting Policy [Abstract] Change in Accounting Policy [Abstract] Change in Accounting Policy [Abstract] Consolidated Entities [Axis] Consolidated Entities [Axis] Subsegments [Domain] Subsegments [Domain] Comprehensive income (loss) attributable to partners Comprehensive Income (Loss), Net of Tax, Attributable to Parent 4.40% Senior Notes due April 2021 4.40% Senior Notes due April 2021 [Member] 4.40% Senior Notes due April 2021 SemCAMS [Member] SemCAMS [Member] SemCAMS [Member] Scenario [Domain] Scenario [Domain] Legal Entity [Axis] Legal Entity [Axis] City Area Code City Area Code Consolidation Items [Domain] Consolidation Items [Domain] ETO Term Loan [Member] Term Loan [Member] Term Loan [Member] Document Period End Date Document Period End Date Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] ETO 364-day Credit Facility due November 2019 [Member] 364-day Credit Facility due November 2021 [Member] 364-day Credit Facility due November 2021 [Member] Distributions to partners Partners' Capital Account, Distributions Accounts receivable from related companies Due from Related Parties, Current Loss Contingency Accrual, at Carrying Value Loss Contingency Accrual Preferred Stock, Redemption Price Per Share Preferred Stock, Redemption Price Per Share Equity in earnings (losses) of unconsolidated affiliates Equity in (earnings) losses of unconsolidated affiliates Income (Loss) from Equity Method Investments NET INCOME (LOSS) Net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Accounts receivable from related companies Accounts Receivable, Related Parties, Current Hedging Designation [Axis] Hedging Designation [Axis] Diluted Net Income (Loss), Net of Tax, Per Outstanding Limited Partnership Unit, Diluted Schedule Of Inventory Schedule of Inventory, Current [Table Text Block] Payments for Environmental Liabilities Payments for Environmental Liabilities Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Non-cash compensation expense Non-cash compensation expense Share-based Payment Arrangement, Noncash Expense Capital expenditures, excluding allowance for equity funds used during construction Payments to Acquire Productive Assets Nature of Expense [Axis] Nature of Expense [Axis] Entity [Domain] Entity [Domain] Capital contributions from noncontrolling interest Proceeds from Contributions from Affiliates Designated as Hedging Instrument [Member] Designated as Hedging Instrument [Member] Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest Revolution Pipeline [Member] Revolution Pipeline [Member] Revolution Pipeline [Member] Distributions from unconsolidated affiliates Proceeds from Equity Method Investment, Distribution Change in other comprehensive loss from unconsolidated affiliates Change in other comprehensive income from equity investments The entity's proportionate share for the period of the other comprehensive income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. Derivatives Not Designated as Hedging Instruments [Table Text Block] Derivatives Not Designated as Hedging Instruments [Table Text Block] Long-term Debt Long-term Debt Preferred Units [Member] Preferred Units [Member] Preferred Units [Member] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Limited Partners' Capital Account, Class [Domain] Limited Partners' Capital Account, Class [Domain] Subsegments Consolidation Items [Axis] Subsegments Consolidation Items [Axis] Crude Oil [Member] Crude Oil [Member] Other current assets Increase (Decrease) in Other Current Assets SemCAMS C$525 million senior secured revolving credit facility [Member] SemCAMS C$525 million senior secured revolving credit facility [Member] SemCAMS C$525 million senior secured revolving credit facility [Member] Cost of products sold Cost of Goods and Services Sold Total costs and expenses Costs and Expenses Equity Components [Axis] Equity Components [Axis] Loss Contingency, Pending Claims, Number Loss Contingency, Pending Claims, Number Partner Capital Components [Domain] Partner Capital Components [Domain] Mark-To-Market Derivatives [Member] Mark-To-Market Derivatives [Member] Mark-to-Market Derivatives [Member] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Entities [Domain] Entities [Domain] Entities [Domain] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Consolidated Entities [Domain] Consolidated Entities [Domain] Operating lease current liabilities Operating Lease, Liability, Current Schedule Of Non-Cash Investing and Non-Cash Financing Activities Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Sunoco, Inc. [Member] Sunoco, Inc. [Member] Sunoco, Inc. [Member] Redeemable noncontrolling interests Redeemable Noncontrolling Interest, Equity, Other, Carrying Amount Less: Net income (loss) attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Natural Gas Liquids [Member] Natural Gas Liquids [Member] Natural Gas Liquids [Member] Entity Interactive Data Current Entity Interactive Data Current Fair Value Of Derivative Instruments Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] REVENUES: Revenues [Abstract] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Year Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Year Fair Value Measurements Fair Value Disclosures [Text Block] OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities [Abstract] ROW Expense Contractual Right of Way, Expense The amount of expense during a period related to right of way contractual agreements. Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Customer [Domain] Customer [Domain] Preferred Stock, Liquidation Preference, Value Preferred Stock, Liquidation Preference, Value 4.65% Senior Notes due June 2021 4.65% Senior Notes due June 2021 [Member] 4.65% Senior Notes due June 2021 Entity Registrant Name Entity Registrant Name Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] Business Acquisition [Line Items] Business Acquisition [Line Items] Crude oil transportation and services [Member] Crude oil transportation and services [Member] Crude oil transportation and services [Member] Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net Impairment losses Impairment losses Asset Impairment Charges Intersegment Eliminations [Member] Intersegment Eliminations [Member] Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Consolidation Items [Axis] Consolidation Items [Axis] Swing Swaps IFERC [Member] Swing Swaps IFERC [Member] Swing Swaps I F E R C [Member] Not Designated as Hedging Instrument [Member] Not Designated as Hedging Instrument [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Depreciation, depletion and amortization Depreciation, depletion and amortization Depreciation, Depletion and Amortization, Nonproduction Series B Preferred Units [Member] Series B Preferred Units [Member] Series B Preferred Units [Member] Shares Issued, Price Per Share Shares Issued, Price Per Share Basis Swaps IFERC/NYMEX [Member] Basis Swaps IFERC NYMEX [Member] Basis Swaps IFERC NYMEX [Member] Available-for-sale securities AOCI, Debt Securities, Available-for-sale, Adjustment, after Tax ETprD ETprD [Member] ETprD Accounts receivable from contracts with customers Receivables from Customers Entity Address, Postal Zip Code Entity Address, Postal Zip Code Commodity Derivatives - Power [Member] Commodity Derivatives - Power [Member] Commodity Derivatives - Power [Member] Common Units Remaining Available to be Issued Under Distribution Reinvestment Plan Common Units Remaining Available to be Issued Under Distribution Reinvestment Plan Number of common units remaining available to be issued under the entity's current distribution reinvestment plan. A distribution reinvestment plan allows the unitholders to reinvest dividends paid to them by the entity on new issues of common units by the entity. Other Related Parties [Member] Other Related Parties [Member] Other Related Parties [Member] Spare parts and other Other Inventory, Supplies, Gross Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Goodwill Goodwill Document Transition Report Document Transition Report General Partner General Partner [Member] Total derivatives assets Derivative Asset, Fair Value, Gross Asset Derivative Asset, Fair Value, Gross Asset NET INCOME (LOSS) PER LIMITED PARTNER UNIT: Net Income (Loss), Per Outstanding Limited Partnership and General Partnership Unit, Basic and Diluted, Net of Tax [Abstract] Penalty Penalty [Member] Penalty OTHER INCOME (EXPENSE): Nonoperating Income (Expense) [Abstract] Level 2 Fair Value, Inputs, Level 2 [Member] Other non-current liabilities Increase (Decrease) in Other Deferred Liability Lessee, Operating Lease, Disclosure Lessee, Operating Lease, Disclosure [Table Text Block] Short [Member] Short [Member] Subsidiary equity offerings, net of issue costs Subsidiary equity offerings, net of issue costs The cash inflow from proceeds of subsidiaries' issuances of equity interests to noncontrolling interest holders. Other current assets Other Assets, Current Document Quarterly Report Document Quarterly Report Inventory, LIFO Reserve Inventory, LIFO Reserve Intersegment [Member] Intersegment [Member] Intersegment [Member] Redeemable Noncontrolling Interest [Text Block] Redeemable Noncontrolling Interest [Text Block] The entire disclosure for redeemable noncontrolling interest (as defined) included in the statement of financial position either as a liability or temporary equity Assets, Fair Value Disclosure Assets, Fair Value Disclosure Accordion feature [Member] Accordion feature [Member] Accordion feature [Member] Counterparty netting Derivative Asset, Fair Value, Amount Offset Against Collateral Preferred Units, Class [Domain] Preferred Units, Class [Domain] Derivative Contract [Domain] Derivative Contract [Domain] Litigation Case [Domain] Litigation Case [Domain] Revenue from Contract Liabilities [Abstract] Revenue from Contract Liabilities [Abstract] Revenue from Contract Liabilities [Abstract] Entity File Number Entity File Number Debt Disclosure [Abstract] Debt Disclosure [Abstract] Inventory, Current [Table] Inventory, Current [Table] Preferred Stock, Redemption Amount Preferred Stock, Redemption Amount Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Repayments of debt Repayments of Long-term Debt Repayments of Long-term Debt KAPS Facility [Member] KAPS Facility [Member] KAPS Facility [Member] Discussion of Interest Rate Derivative Risk Management Policy Discussion of Interest Rate Derivative Risk Management Policy Revenue, Remaining Performance Obligation, Amount Revenue, Remaining Performance Obligation, Amount Loss Contingency, Estimate of Possible Loss Loss Contingency, Range of Possible Loss, Portion Not Accrued Investment In Sunoco LP [Member] Investment In Sunoco LP [Member] Investment In Sunoco LP [Member] Preferred Units, Cumulative Cash Distributions Payments of Ordinary Dividends, Preferred Stock and Preference Stock Balance Sheet Location [Axis] Balance Sheet Location [Axis] Price Risk Derivative Liabilities, at Fair Value Price Risk Derivative Liabilities, at Fair Value Price Risk Derivative Liabilities, at Fair Value Document Fiscal Year Focus Document Fiscal Year Focus Proposed Environmental Penalty Environmental Penalty The amount of penalty by the EPA or another regulatory authority from alleged failure to comply with environmental regulations. Williams Litigation [Member] Williams [Member] Williams [Member] Current maturities of long-term debt Long-term Debt, Current Maturities Entity Current Reporting Status Entity Current Reporting Status Limited Partner [Member] Common unitholders [Member] Common unitholders [Member] Series G Preferred Units [Member] Series G Preferred Units [Member] Series G Preferred Units Position [Axis] Position [Axis] All Currencies [Domain] All Currencies [Domain] Commodity Derivatives [Member] Commodity Derivatives [Member] Commodity Derivatives [Member] Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Inventory, Net [Abstract] Inventory, Net [Abstract] ETO [Member] ETO [Member] ETO [Member] Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Trading Activity, by Type [Domain] Trading Activity, by Type [Domain] INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities [Abstract] Cash and cash equivalents Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Cash and Cash Equivalents, at Carrying Value All Other Segment All Other Segment [Member] All Other Segment Diluted income (loss) per Limited Partner unit Income (Loss) from Continuing Operations, Net of Tax, Per Outstanding Limited Partnership Unit, Diluted Long-term debt, less current maturities Long-term Debt, Excluding Current Maturities Segment Reporting [Abstract] Segment Reporting [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Debt Instrument [Line Items] Debt Instrument [Line Items] Interest Rate Derivatives [Member] Interest Rate Derivatives [Member] Interest Rate Derivatives [Member] Without offsetting agreements [Member] Without offsetting agreements [Member] Without offsetting agreements [Member] USAC Credit Facility, due 2023 [Member] USAC Credit Facility, due 2023 [Member] USAC Credit Facility, due 2023 [Member] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Business Combination, Consideration Transferred Business Combination, Consideration Transferred Enable Enable [Member] Enable Total liabilities and equity Liabilities and Equity Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Income Tax Disclosure [Text Block] Income Tax Disclosure [Text Block] Entity Address, City or Town Entity Address, City or Town Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Interest Rate Swaps Outstanding Schedule of Interest Rate Derivatives [Table Text Block] Hedging Relationship [Axis] Hedging Relationship [Axis] Financial Instrument [Axis] Financial Instrument [Axis] Series F Preferred Units [Member] Series F Preferred Units [Member] Series F Preferred Units [Member] Total equity Partners' Capital, Including Portion Attributable to Noncontrolling Interest Fixed Swaps/Futures [Member] Fixed Swaps Futures [Member] Fixed Swaps Futures [Member] Other non-cash Other Noncash Income (Expense) Equity Component [Domain] Equity Component [Domain] Midstream [Member] Midstream [Member] Midstream [Member] Change in value of available-for-sale securities OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Line of Credit Facility, Interest Rate at Period End Line of Credit Facility, Interest Rate at Period End Other non-current assets, net Increase (Decrease) in Other Noncurrent Assets Commodity Derivatives - NGLs [Member] Commodity Derivatives - NGLs [Member] Commodity Derivatives - NGLs [Member] Property, Plant and Equipment, Net Property, Plant and Equipment, Net Entity Tax Identification Number Entity Tax Identification Number Revenue Recognition, Deferred Revenue [Policy Text Block] Revenue from Contract with Customer [Policy Text Block] NET INCOME (LOSS) ATTRIBUTABLE TO PARTNERS Net Income (Loss) Attributable to Parent Accrued and other current liabilities Other Liabilities, Current SPLP [Member] SPLP [Member] SPLP [Member] Inventories Inventory Disclosure [Text Block] Other comprehensive income (loss), net of tax Other comprehensive income, net of tax Other Comprehensive Income (Loss), Net of Tax Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Total current assets Assets, Current Current Fiscal Year End Date Current Fiscal Year End Date Less: Comprehensive income (loss) attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Earnings Per Share [Abstract] Earnings Per Share [Abstract] Interest Rate Derivative Liabilities, at Fair Value Interest Rate Derivative Liabilities, at Fair Value Investment In USAC [Member] Investment In USAC [Member] Investment In USAC [Member] Subsidiary units issued Noncontrolling Interest, Increase from Subsidiary Equity Issuance Intrastate Transportation And Storage [Member] Intrastate Transportation And Storage [Member] Intrastate Transportation and Storage [Member] Document Fiscal Period Focus Document Fiscal Period Focus Cash Flow, Operating Capital [Table Text Block] Cash Flow, Operating Capital [Table Text Block] Commodity Derivatives - Trading [Member] Commodity Derivatives - Trading [Member] Commodity Derivatives-Trading[Member] Operations and Organization Presentation Disclosures [Table] Operations and Organization Presentation Disclosures [Table] Operations and Organization Presentation Disclosures [Table] Actuarial gain related to pension and other postretirement benefit plans Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax Parent Company [Member] Parent Company [Member] Credit Derivatives Contract Type [Axis] Credit Derivatives Contract Type [Axis] Net Income (Loss) Available to Common Stockholders, Diluted Net Income (Loss) Available to Common Stockholders, Diluted Accrued Environmental Liabilities [Abstract] Accrued Environmental Liabilities [Abstract] Accrued Environmental Liabilities [Abstract] Supplemental Cash Flow Information [Abstract] Supplemental Cash Flow Information [Abstract] Forwards Swaps [Member] Forwards Swaps [Member] Forwards/Swaps [Member] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Schedule of Capital Units [Table Text Block] Schedule of Capital Units [Table Text Block] Entity Filer Category Entity Filer Category Less: Net income attributable to redeemable noncontrolling interests Net Income (Loss) Attributable to Redeemable Noncontrolling Interest Product and Service [Domain] Product and Service [Domain] Long-Lived Tangible Asset [Domain] Long-Lived Tangible Asset [Domain] Price Risk Derivative Assets, at Fair Value Price Risk Derivative Assets, at Fair Value Distributions from unconsolidated affiliates in excess of cumulative earnings Proceeds from Equity Method Investment, Distribution, Return of Capital Inventory [Domain] Inventory [Domain] SemCAMS C$350 million senior secured term loan facility [Member] SemCAMS C$350 million senior secured term loan facility [Member] SemCAMS C$350 million senior secured term loan facility [Member] Preferred Stock, Dividend Rate, Percentage Preferred Stock, Dividend Rate, Percentage Line of Credit Facility, Remaining Borrowing Capacity Line of Credit Facility, Remaining Borrowing Capacity Phillips 66 Company [Member] Phillips 66 Company [Member] Phillips 66 Company [Member] Accounts receivable from related companies Increase (Decrease) in Due from Related Parties, Current Temporary Equity Disclosure [Abstract] Temporary Equity Disclosure [Abstract] Revision of Prior Period [Domain] Revision of Prior Period [Domain] Debt Instrument, Interest Rate, Stated Percentage Debt Instrument, Interest Rate, Stated Percentage Segment Adjusted EBITDA Segment Adjusted EBITDA Segment Adjusted EBITDA is the reporting entity's measure of segment profit, defined as earnings before interest, taxes, depreciation, depletion, amortization and other non-cash items, such as non-cash compensation expense, gains and losses on disposals of assets, the allowance for equity funds used during construction, unrealized gains and losses on commodity risk management activities, non-cash impairment charges, loss on extinguishment of debt, gain on deconsolidation and other non-operating income or expense items. Unrealized gains and losses on commodity risk management activities include unrealized gains and losses on commodity derivatives and inventory fair value adjustments (excluding lower of cost or market adjustments). Adjusted EBITDA reflects amounts for less than wholly owned subsidiaries based on 100% of the subsidiaries’ results of operations and for unconsolidated affiliates based on the Partnership’s proportionate ownership. Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Accumulated depreciation and depletion Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Schedule of Related Party Transactions [Table Text Block] Schedule of Related Party Transactions [Table Text Block] Currency [Axis] Currency [Axis] Diluted Income from Continuing Operations per Limited Partner Unit: Earnings Per Share, Diluted [Abstract] Other Product and Service, Other [Member] Gathering, transportation and other fees Natural Gas, Midstream [Member] Limited Partners' Capital Account, Units Outstanding Limited Partners' Capital Account, Units Outstanding Related Party Transactions [Abstract] Related Party Transactions [Abstract] Decrease in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Business Combination Disclosure Business Combination Disclosure [Text Block] NGL sales NGL sales [Member] NGL sales [Member] Refined product sales Refined Products [Member] Refined Products [Member] Hedging Relationship [Domain] Hedging Relationship [Domain] Partners' Capital Notes [Abstract] Partners' Capital Notes [Abstract] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Derivative Asset, Fair Value, Amount Not Offset Against Collateral Derivative Asset, Fair Value, Amount Not Offset Against Collateral Basis of Accounting, Policy [Policy Text Block] Basis of Accounting, Policy [Policy Text Block] Equity Dividends [Table] Equity Dividends [Table] Equity Dividends [Table] Distribution Made to Limited Partner, Distributions Declared, Per Unit Distribution Made to Limited Partner, Distributions Declared, Per Unit COSTS AND EXPENSES: Costs and Expenses [Abstract] Investments in unconsolidated affiliates Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Subsegments Consolidation Items [Domain] Subsegments Consolidation Items [Domain] Ownership [Axis] Ownership [Axis] Distributions Made to Limited Partner, by Distribution [Table Text Block] Distributions Made to Limited Partner, by Distribution [Table Text Block] Document Information [Line Items] Document Information [Line Items] Income from continuing operations, net of noncontrolling interest Income from continuing operations, net of noncontrolling interest Income from continuing operations, net of noncontrolling interest. Weighted average limited partner units Weighted Average Limited Partnership Units Outstanding, Basic Ownership [Domain] Ownership [Domain] Contributions to unconsolidated affiliate Payments for Advance to Affiliate Revenue from Contract with Customer [Text Block] Revenue from Contract with Customer [Text Block] Dividends Payable Dividends Payable Balance, Beginning of Period Balance, End of Period Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Partner Type of Partners' Capital Account, Name [Domain] Partner Type of Partners' Capital Account, Name [Domain] Operations And Organization Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Class B Units Class B Units [Member] Class B Units Total revenues Revenues Revenues Class of Stock [Axis] Class of Stock [Axis] Outstanding Commodity-Related Derivatives Schedule of Derivative Instruments [Table Text Block] Schedule of Fair Value, Off-balance Sheet Risks [Table] Schedule of Fair Value, Off-balance Sheet Risks [Table] Inventory, Policy [Policy Text Block] Inventory, Policy [Policy Text Block] Limited Partners' Capital Account by Class [Axis] Limited Partners' Capital Account by Class [Axis] Income tax expense Income tax (benefit) expense from continuing operations Income Tax Expense (Benefit) Financial and Nonfinancial Liabilities, Fair Value Disclosure Financial and Nonfinancial Liabilities, Fair Value Disclosure Operations And Organization [Abstract] Operations And Organization [Abstract] Operations And Organization [Abstract] External Customers [Member] External Customers [Member] External Customers [Member] Local Phone Number Local Phone Number Environmental Exit Costs by Cost Environmental Exit Costs by Cost [Table Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Accrual for Environmental Loss Contingencies Total environmental liabilities Accrual for Environmental Loss Contingencies Interim Period, Costs Not Allocable [Domain] Interim Period, Costs Not Allocable [Domain] Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Contract with Customer, Liability Contract with Customer, Liability Energy [Domain] Energy [Domain] Entity Emerging Growth Company Entity Emerging Growth Company Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Total derivatives liabilities Derivative Liability, Fair Value, Gross Liability Derivative Liability, Fair Value, Gross Liability Line of Credit Facility, Maximum Borrowing Capacity Line of Credit Facility, Maximum Borrowing Capacity Deferred income taxes Deferred Income Taxes and Other Tax Liabilities, Noncurrent Counterparty netting Derivative Liability, Fair Value, Amount Offset Against Collateral Natural Gas [Member] Natural Gas [Member] Natural Gas [Member] Operating expenses Operating Costs and Expenses Limited Partners' Capital Account, Units Issued Limited Partners' Capital Account, Units Issued Preferred Stock, Shares Outstanding Preferred Stock, Shares Outstanding Net Cash Provided by (Used in) Investing Activities, Continuing Operations Net Cash Provided by (Used in) Investing Activities Trading Activities, Gain and Losses, by Type, by Income Statement Location [Table] Trading Activities, Gain and Losses, by Type, by Income Statement Location [Table] Banking Regulation, Supplementary Leverage Ratio, Actual Banking Regulation, Supplementary Leverage Ratio, Actual Commodity Derivatives - Crude [Member] Commodity Derivatives - Crude [Member] Commodity Derivatives - Crude [Member] Trading Symbol Trading Symbol Revenue from Related Parties Revenue from Related Parties General Partner General Partners' Capital Account Additions Deferred Revenue, Additions Reportable Segments [Abstract] Reportable Segments [Abstract] Reportable Segments [Abstract] Accounts payable to related companies Increase (Decrease) in Due to Related Parties, Current Contract assets Contract with Customer, Asset, after Allowance for Credit Loss Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] USA Compression Partners, LP [Member] USA Compression Partners, LP [Member] USA Compression Partners, LP [Member] Site Contingency, Number of Sites Needing Remediation Site Contingency, Number of Sites Needing Remediation Site Contingency, Number of Sites Needing Remediation Net Income Per Limited Partner Unit Earnings Per Share [Text Block] Entity Shell Company Entity Shell Company Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Fair Value, Recurring [Member] Fair Value, Recurring [Member] Broker cleared derivative contracts [Member] Broker cleared derivative contracts [Member] Broker cleared derivative contracts [Member] Inventory valuation adjustments Inventory valuation adjustments Inventory, LIFO Reserve, Period Charge Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Basic Income from Continuing Operations per Limited Partner Unit: Earnings Per Share, Basic [Abstract] Subsegments [Axis] Subsegments [Axis] Additional Legal Entities [Axis] Additional Legal Entities [Axis] Additional legal entities associated with a report. Line of Credit Facility, Fair Value, Basis for Measurement Line of Credit Facility, Fair Value, Basis for Measurement