8 forward starting interest rate swaps (30-year), 0.73% Eight Forward Starting Thirty Year Interest Rate Swaps 0.73 Percent [Member] Eight Forward Starting Thirty Year Interest Rate Swaps 0.73 Percent Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Related Party [Axis] Related Party [Axis] Contributions from noncontrolling interests (Note 12) Contributions from noncontrolling interests Proceeds from Contributions from Noncontrolling Interests Proceeds from Contributions from Noncontrolling Interests 3.55% senior notes due December 2029 Senior Notes Due In December 2029 At 3.55 Percent [Member] Senior Notes Due In December 2029 At 3.55 Percent Estimated amortization expense related to finite-lived intangible assets for the next five years Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Substantially all trade accounts receivable, net, maximum age of balances past their scheduled invoice date Trade Accounts Receivable Net Disclosure of Maximum Age of Balances Past Scheduled Invoice Date The maximum number of days past their scheduled invoice date for substantially all of the trade accounts receivable. Range [Domain] Statistical Measurement [Domain] LIABILITIES AND PARTNERS’ CAPITAL Liabilities and Equity [Abstract] 2025 Lessor, Operating Lease, Payment to be Received, Year Five Equity-Indexed Compensation Plans Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Risks and Uncertainties [Abstract] Risks and Uncertainties [Abstract] Distributions to noncontrolling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Security Exchange Name Security Exchange Name 5.15% senior notes due June 2042 Senior Notes Due In June2042 At5.15 Percent [Member] Represents the 5.15 percent senior notes, which are due in June 2042. Finance lease right-of-use assets, gross Finance Lease, Right-of-Use Asset, before Accumulated Amortization Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments [Abstract] Long-lived assets attributable to geographic areas Long-lived Assets by Geographic Areas [Table Text Block] Total current liabilities Current liabilities Liabilities, Current Trade Accounts Receivable and Other Receivables, Net Accounts Receivable [Policy Text Block] 2021 Other Commitment, to be Paid, Year One Total Finance Lease, Liability, Payment, Due ASSETS Assets [Abstract] Investment, Name [Axis] Investment, Name [Axis] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Accounting Policies [Abstract] Accounting Policies [Abstract] Cash and Cash Equivalents and Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Trade accounts payable to related parties Due to Related Parties, Current Operating cash flows for operating leases Operating Lease, Payments Credit facility extensions available Number of One Year Extensions of Revolving Credit Facility Represents the number of one-year extensions provided for under the credit facility. 2023 Long-Term Debt, Maturity, Year Three 5.00% senior notes due February 2021 Senior Notes Due In February2021 At5.00 Percent [Member] Represents the 5.00 percent senior notes, which are due in February 2021. FM Gathering LLC FM Gathering LLC [Member] FM Gathering LLC Crude oil, NGL and other terminalling and storage Crude Oil, NGL, And Other Terminalling And Storage [Member] Crude Oil, NGL, And Other Terminalling And Storage [Member] Combined summarized financial information for unconsolidated entities Equity Method Investment, Financial Statement, Reported Amounts [Abstract] Unrealized gain/(loss) on hedges Net deferred gain/(loss) recognized in AOCI on derivatives Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Land and other Land And Other [Member] This element represents the real estate assets held for productive use and related non-depreciable assets. Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Interest Rate Derivatives [Abstract] Interest Rate Derivatives [Abstract] 2021 Lessee, Operating Lease, Liability, to be Paid, Year One Expense associated with agreements Unrecorded Unconditional Purchase Obligation, Purchases Purchases and related costs from related parties Related Party Transaction, Purchases from Related Party 2024 Lessee, Operating Lease, Liability, to be Paid, Year Four Schedule of derivative financial assets and liabilities accounted for at fair value on a recurring basis, by level within the fair value hierarchy Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Additions Contract with Customer, Liability, Additions Amount of additions to obligation to transfer good or service to customer for which consideration from customer has been received or is due. Total long-term debt Long-term Debt and Lease Obligation AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Canada CANADA State income tax Current State and Local Tax Expense (Benefit) Impact due to contractual rights of offset with counterparties Contract With Customer, Contractual Rights Of Offset With Counterparties Amount of contractual rights of offset with counterparties that reduces the entity's right to consideration in exchange for good or service transferred to customer. Lease expense Operating Leases, Rent Expense, Minimum Rentals Gain on/(impairment of) investments in unconsolidated entities, net (Note 9) (Gain on)/impairment of investments in unconsolidated entities, net (Note 9) Gain on/(impairment of) investments in unconsolidated entities, net Gain on (Impairment Of) Investments In Unconsolidated Entities, Net Amount of gain (loss) (i) from remeasurement to fair value of retained investment in former subsidiary and group of assets constituting business activity deconsolidated and derecognized and/or (ii) on sale or disposal of an equity method investment and/or (iii) impairment of investment in an unconsolidated entity. Other long-term liabilities and deferred credits Other Liabilities, Noncurrent Deferred tax asset Deferred tax asset Deferred Income Tax Assets, Net Financing cash flows for finance leases Finance Lease, Principal Payments Capital contributions to equity method investees excluding capitalized interest Capital Contributions To Equity Method Investees Excluding Capitalized Interest Cash outflow for capital contributions (excluding capitalized interest) subsequent to the initial purchase of interest in equity method investments, to fund the entity's portion of development, construction or capital expansion projects of the equity method investees, net of cash received as a return of investment. Short butane position related to subsequent sale of products Short Butane Position Contracts Related To Subsequent Sale Of Product [Member] Represents the derivative instruments in a short position for butane that hedges the subsequent sale of products derived from our natural gas processing and NGL fractionation activities. Undivided joint interest in pipeline segment Undivided Joint Interest in Pipeline Segment [Member] Undivided Joint Interest in Pipeline Segment Gain/(loss) recognized in earnings Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments Net broker payable Effect of Collateral Netting (Asset) Derivative Asset, Collateral, Obligation to Return Cash, Offset 4.65% senior notes due October 2025 Senior Notes Due In October2025 At4.65 Percent [Member] Represents the 4.65 percent senior notes, which are due in October 2025. Effect of translation adjustment Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Unallocated Segment Reconciling Items [Member] Inventory Inventory, Net Plains All American PNG Successor Long-Term Incentive Plan Plains All American P N G Successor Long Term Incentive Plan [Member] Represents information related to the Plains All American PNG Successor Long-Term Incentive Plan. Fair Value, Measurement Frequency [Domain] Measurement Frequency [Domain] Major customer percentage of total revenue Concentration Risk, Percentage Class A Shares Shares Class A [Member] Represents the classification of shares representing limited partner interests in the company that are held by the public. Class A shareholders have equal voting rights with Class B shareholders and are entitled to receive distributions should distributions be paid by the company. Inventory [Axis] Inventory [Axis] Statement [Line Items] Statement [Line Items] Weighted average long term debt interest rate Long-term Debt, Weighted Average Interest Rate, at Point in Time Periods for which letters of credit are issued Debt Instrument, Term Measurement Input Type [Domain] Measurement Input Type [Domain] NGL and natural gas processing and fractionation NGL And Natural Gas Processing And Fractionation [Member] NGL And Natural Gas Processing And Fractionation [Member] Statement [Table] Statement [Table] Other Other Comprehensive Income, Other, Net of Tax Range [Axis] Statistical Measurement [Axis] Net broker receivable Effect of Collateral Netting (Liability) Derivative Liability, Collateral, Right to Reclaim Cash, Offset Outstanding checks included in accounts payable that were reclassified from cash and cash equivalents Liabilities for Outstanding Checks Liability as of the balance sheet date of outstanding checks that were reclassified from cash and cash equivalents to accounts payable and accrued liabilities. Incremental net income/(loss) attributable to PAGP resulting from assumed exchange of AAP units and AAP Management Units Dilutive Securities, Effect on Basic Earnings Per Share, Dilutive Convertible Securities Entity Small Business Entity Small Business Distribution Type [Domain] Distribution Type [Domain] Basis of Consolidation and Presentation Consolidation, Policy [Policy Text Block] Contract With Customer, Asset And Liability [Table] Contract With Customer, Asset And Liability [Table] Contract With Customer, Asset And Liability [Table] Debt Debt Disclosure [Text Block] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Other commitments Other Commitment, Fiscal Year Maturity [Abstract] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Gains/(losses) from derivative activities, net of inventory valuation adjustments Gains (Losses) From Derivative Activities, Net of Inventory Valuation Adjustments Gains (losses) related to derivative instruments for which the underlying transaction does not occur in the current period and on derivatives that are related to investing activities, such as the purchase of linefill. Also includes the impact of corresponding inventory valuation adjustments, as applicable. Amendment Flag Amendment Flag Summary of LTIP awards authorized Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] Other long-term liabilities and deferred credits Other Long-Term Liabilities And Deferred Credits [Member] Other Long-Term Liabilities And Deferred Credits [Member] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Inventory-related disclosures Inventory Adjustments [Abstract] LTIP awards authorized (in shares or units) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Estimated size of release (in bbl) Estimated Size of Release Represents the estimated size of the pipeline release. Currently available (in units) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant PAGP Plains GP Holdings, L.P. [Member] Plains GP Holdings, L.P. Reclassification adjustments Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax ExxonMobil Corporation Exxon Mobil Corporation [Member] Represents information pertaining to Exxon Mobil Corporation and its subsidiaries. Distributions paid to noncontrolling interests (Note 12) Payments of Ordinary Dividends, Noncontrolling Interest Transaction Type [Axis] Transaction Type [Axis] Other Other Debt [Member] Other types of debt not specifically identified. Measurement Frequency [Axis] Measurement Frequency [Axis] Equity-indexed Compensation Compensation Related Costs, Policy [Policy Text Block] Series B Preferred Units Series B Preferred Stock [Member] General payment terms Revenue, Performance Obligation, Description of Payment Terms Investments in Unconsolidated Entities Equity Method Investments [Policy Text Block] Change in ownership interest in connection with Exchange Right exercises (Note 12) Partners' Capital Account, Exchanges and Conversions Total gain (loss) on derivatives recognized in net income Derivative, Gain (Loss) on Derivative, Net Other Assets [Abstract] Other Assets [Abstract] Statement of Partners' Capital [Abstract] Statement of Partners' Capital [Abstract] Letters of credit Standby Letters of Credit [Member] Derivatives Derivatives, Policy [Policy Text Block] Dividends [Domain] Dividends [Domain] Charge related to the write-down of inventory, long-term inventory Inventory Write-down, Noncurrent Amount of loss on long-term inventory from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels. Facilities Segment Facilities [Member] The segment of the entity of which operations generally consist of fee-based activities associated with providing storage, terminalling and throughput services for crude oil, refined products, natural gas liquids and natural gas, as well as natural gas liquids fractionation and isomerization services and natural gas and condensate processing services. Lessor Lessor, Leases [Policy Text Block] GO Zone Term Loans GO Zone Term Loans [Member] GO Zone Term Loans [Member] Loss Contingencies Commitments and Contingencies, Policy [Policy Text Block] Gain from remeasurement to fair value of retained investment Deconsolidation, Revaluation of Retained Investment, Gain (Loss), Amount Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Income Statement Location [Domain] Income Statement Location [Domain] 2022 Lessee, Operating Lease, Liability, to be Paid, Year Two AOCI cash flow hedge Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member] Commitments Other Commitments [Line Items] State State and Local Jurisdiction [Member] Lender Type [Domain] Lender Type [Domain] [Domain] for Lender Type [Axis] Foreign currency derivatives Foreign Currency Derivatives Foreign Exchange Contract [Member] Supply and Logistics Segment Supply And Logistics [Member] The segment of the entity of which operations generally consist of merchant-related activities, including the purchase of crude oil, natural gas liquids and natural gas at various locations and the resale or exchange of such products at various points along the distribution chain, the storage of inventory during contango market or seasonal storage of NGL and the transportation of crude oil and natural gas liquids, using various methods of transportation, from various delivery points, market hub locations or directly to end users. Schedule of Lease Costs and Other Lessee Information Lease, Cost [Table Text Block] Limited partner interest percentage Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest Deferred tax asset (Note 15) Partners Capital Deferred Tax Asset Represents the increase in partners capital from the deferred tax asset created during the period related to basis differences associated with transfers of ownership. 2023 Lessee, Operating Lease, Liability, to be Paid, Year Three Other long-term assets, net Other long-term assets, net Other Assets, Noncurrent Plan Name [Axis] Plan Name [Axis] Trucking equipment and other Trucking Equipment And Other [Member] This element represents long lived, depreciable assets used for the primary purpose of moving people and products from one place to another and represents furniture and fixtures, computer hardware and other assets related to field property. Concentration Risk [Table] Concentration Risk [Table] Stock Conversion Description [Axis] Stock Conversion Description [Axis] Total assets Total assets Assets Related Party Transactions Related Party Transactions Disclosure [Text Block] Ownership percentage sold Equity Method Investment Ownership Percentage Sold Equity Method Investment Ownership Percentage Sold Units outstanding (in units) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Distributions paid to limited partners Limited Partners' Capital Account, Distribution Amount 3.80% senior notes due September 2030 Senior Notes Due In September 2030 At 3.80 Percent [Member] Senior Notes Due In September 2030 At 3.80 Percent Finance Finance Lease, Liability, Payment, Due [Abstract] 6.65% senior notes due January 2037 Senior Notes Due In January2037 At6.65 Percent [Member] Represents the 6.65 percent senior notes, which are due in January 2037. Subsequent Event Type [Axis] Subsequent Event Type [Axis] Lessor, Lease, Description [Table] Lessor, Lease, Description [Table] Field operating costs Field Operating Costs [Member] Costs related to site and field operations during the period. Other, cost Other Assets, Miscellaneous, Noncurrent, Gross Other Assets, Miscellaneous, Noncurrent, Gross Cushing Connect Pipeline & Terminal LLC Cushing Connect Pipeline & Terminal LLC [Member] Cushing Connect Pipeline & Terminal LLC Leases Lessor, Operating Leases [Text Block] Intangible Assets Intangible Assets, Finite-Lived, Policy [Policy Text Block] Concentration of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Components of other long-term assets, net of accumulated amortization Schedule of Other Assets, Noncurrent [Table Text Block] Acquisitions and Divestitures Mergers, Acquisitions and Dispositions Disclosures [Text Block] Schedule of future non-cancelable commitments Contractual Obligation, Fiscal Year Maturity [Table Text Block] Other agreements Other Intangible Assets [Member] Long power position for power supply requirements Long Power Position For Power Supply Requirements Contracts [Member] Represents the derivative instruments consisting of long power positions which hedge a portion of power supply requirements. 5.00% senior notes due February 2021 Senior Notes Due In February 2021 At 5.00 Percent [Member] Represents the 5.00 percent senior notes, which are due in February 2021. Estimated undiscounted reserve for environmental liabilities, short-term Accrued Environmental Loss Contingencies, Current Linefill and base gas Linefill and Base Gas Crude oil and NGL linefill in pipelines, tanks and caverns as well as base gas in natural gas storage facilities that are owned by the entity. Linefill and base gas are intended for long-term use. Less: Present value discount Lessee, Operating Lease, Liability, Undiscounted Excess Amount Plains All American 2013 Long-Term Incentive Plan Plains All American2013 Long Term Incentive Plan [Member] Represents information related to the Plains All American 2013 Long-Term Incentive Plan. Settlements Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Investment and acquisition capital Investment and Acquisition Capital Investment and Acquisition Capital Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Level 1 Fair Value, Inputs, Level 1 [Member] Cactus II Pipeline LLC (“Cactus II”) CactusIIPipelineLLC [Member] Cactus II Pipeline LLC Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Inventory Increase (Decrease) in Inventories Gross Position - Asset Derivative Liability, Fair Value, Gross Asset Foreign Currency Transactions/Translation Foreign Currency Transaction [Abstract] Other long-term assets, accumulated amortization Accumulated Amortization of Other Assets, Noncurrent Carrying amount of accumulated amortization of noncurrent assets not separately disclosed in the balance sheet. Impaired Long-Lived Assets Held and Used by Type [Axis] Impaired Long-Lived Assets Held and Used by Type [Axis] Other Partners' Capital, Other Other, net Other Assets, Miscellaneous, Noncurrent Short condensate WTI position related to subsequent sale of products Short W T I Position Contracts Related To Subsequent Sale Of Product [Member] Represents the derivative instruments in a short position for WTI that hedges the subsequent sale of products derived from our natural gas processing and NGL fractionation activities. Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Investments in unconsolidated entities Equity Method Investments Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Schedule of Goodwill [Table] Schedule of Goodwill [Table] INCOME/(LOSS) BEFORE TAX Income/(loss) before tax Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Term of derivative contract Derivative, Term of Contract Threshold for acquisition period qualification Acquisition Measurement Period Threshold Represents the minimum acquisition amount for the debt-to-EBITDA coverage ratio covenant compliance requirement to change. Property and equipment Capline pipeline system Property, Plant and Equipment [Member] Revenues attributable to geographic areas Revenue from External Customers by Geographic Areas [Table Text Block] Dilutive awards (less than) (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements PROPERTY AND EQUIPMENT Property and equipment, gross Property, Plant and Equipment, Gross Federal income tax Deferred Federal Income Tax Expense (Benefit) Segment financial data Schedule of Segment Reporting Information, by Segment [Table Text Block] Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Other investments Other Equity Method Investment [Member] Other Equity Method Investment Income Statement [Abstract] Income Statement [Abstract] Schedule of inventory, linefill and base gas and long-term inventory Schedule of Inventory Linefill and Base Gas and Long Term Inventory [Table Text Block] Tabular disclosure of the carrying amount as of the balance sheet date of inventory, linefill and base gas and long-term inventory. This may include, but is not limited to, the volumes, unit of measure, total value, and price per unit of each of the major classes of inventory. Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Unamortized discounts and debt issuance costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Use of Estimates Use of Estimates, Policy [Policy Text Block] 2.85% senior notes due January 2023 Senior Notes Due In January2023 At2.85 Percent [Member] Represents 2.85 percent senior notes, which are due in January 2023. PAA senior secured hedged inventory facility Senior Secured Hedged Inventory Facility [Member] Represents activity related to Senior secured hedged inventory credit facility. Total AOCI Including Portion Attributable to Noncontrolling Interest [Member] Income Tax Authority [Domain] Income Tax Authority [Domain] Forward exchange contracts that exchange USD for CAD maturing in 2021 Foreign Exchange Forward Contracts That Exchange U S Dollars For Canadian Dollars At Average Rate Disclosed Maturing In 2021 [Member] Foreign Exchange Forward Contracts That Exchange U S Dollars For Canadian Dollars At Average Rate Disclosed Maturing In 2021 [Member] Derivative position notional amount (in barrels or Bcf) Derivative, Nonmonetary Notional Amount, Volume Consolidated Entities [Axis] Consolidated Entities [Axis] Total tariff activities Tariff Activities [Member] Tariff Activities [Member] Number of felony charges found guilty Indictment, Number of Felony Charges, Guilty Verdict Indictment, Number of Felony Charges, Guilty Verdict Scenario, Unspecified [Domain] Scenario [Domain] Counterparty Name [Domain] Counterparty Name [Domain] Additions to property, equipment and other Payments to Acquire Property, Plant, and Equipment Consolidation Items [Domain] Consolidation Items [Domain] Series A Preferred Units Series A Preferred Units [Member] Series A preferred units representing limited partner interests in the entity that rank pari passu with Series B preferred units, and senior to our common units and to each other classes or series of our equity securities with respect to distribution rights and rights upon liquidation and are convertible into common units by the holder or the entity under certain conditions. Trade accounts receivable and other receivables, net from related parties Due from Related Parties, Current Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Class Action Lawsuits Class Action Lawsuits [Member] Represents information related to class action lawsuits filed against the company. Equity earnings in unconsolidated entities Equity earnings in unconsolidated entities Income (Loss) from Equity Method Investments Hedging Designation [Axis] Hedging Designation [Axis] Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Accumulated impairment losses Goodwill, Impaired, Accumulated Impairment Loss Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Proceeds from the issuance of PAA senior notes (Note 11) Proceeds from Issuance of Senior Long-term Debt Ratio of debt-to-EBITDA during acquisition period, maximum Debt Instrument, Coverage Ratio Debt to EBITDA Acquisition Period Maximum Represents the maximum ratio of debt to EBITDA (earnings before interest, taxes, depreciation and amortization) required to be maintained during acquisition period under the credit agreement. Entity [Domain] Entity [Domain] Derivatives in Hedging Relationships Designated as Hedging Instrument [Member] Long-term inventory Inventory, Noncurrent Weighted-average remaining lease term (in years): Lease, Weighted Average Remaining Lease Term [Abstract] Lease, Weighted Average Remaining Lease Term Schedule of net broker receivable (payable) Schedule of Due to (from) Broker-Dealers and Clearing Organizations [Table Text Block] Acquisitions Goodwill, Acquired During Period Foreign tax rate Foreign Tax Rate Foreign Tax Rate Quarterly Financial Data (Unaudited) Quarterly Financial Information [Text Block] Long-term storage, terminalling and throughput agreements revenues Long-Term Storage, Terminalling And Throughput Agreements Revenues [Member] Long-Term Storage, Terminalling And Throughput Agreements Revenues [Member] Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table] Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table] Commodity Price Risk Hedging: Price Risk Derivatives [Abstract] Estimated useful lives Property, Plant and Equipment, Useful Life Goodwill disclosures Goodwill [Line Items] Lessee, Lease, Description [Line Items] Lessee, Lease, Assets and Liabilities [Line Items] Lessee, Lease, Description [Line Items] Proceeds attributable to multi-year supply agreement entered into in conjunction with sale of assets Increase (Decrease) in Deferred Revenue Total debt Debt and Lease Obligation Limited Partners' Capital Account, Class [Domain] Limited Partners' Capital Account, Class [Domain] Crude oil Crude Oil [Member] Net deferred tax assets Deferred Tax Assets, Net Other Other Inventory [Member] Category of inventory not separately disclosed. Senior notes repurchase amount Debt Instrument, Repurchased Face Amount Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Share-based Payment Arrangement [Abstract] Consolidated Entities [Domain] Consolidated Entities [Domain] Operating lease liabilities, current Operating Lease, Liability, Current Weighted average interest rate, short-term Short-term Debt, Weighted Average Interest Rate, at Point in Time Common Units Common Units [Member] Common units representing limited partner interests in the entity. Non-cash change in lease liabilities arising from obtaining new right of use assets or modifications, finance leases Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Impaired Long-Lived Assets Held and Used, Asset Name [Domain] Impaired Long-Lived Assets Held and Used, Asset Name [Domain] Impact of derivative activities recognized in earnings Derivative Instruments, Gain (Loss) [Table Text Block] Impact of derivative activities recognized in earnings Derivative Instruments, Gain (Loss) [Line Items] Summary of derivative assets and liabilities on Consolidated Balance Sheets on a gross basis Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Increase (Decrease) in Partners' Capital Increase (Decrease) in Partners' Capital [Roll Forward] Term loan Term Loan [Member] Term Loan [Member] Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Derivative assets and liabilities Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Interest Rate Swaps Interest Rate Swap [Member] Customer [Domain] Customer [Domain] Inventory, Volumes (in barrels or in Mcf) Inventory, Volumes Current The volume of current inventory as of the balance sheet date. Cumulative Effect, Period of Adoption, Adjustment Cumulative Effect, Period of Adoption, Adjustment [Member] Entity Registrant Name Entity Registrant Name Subsequent Event Type [Domain] Subsequent Event Type [Domain] Business Acquisition [Line Items] Business Acquisition [Line Items] Major Customers and Concentration of Credit Risk Concentration Risk [Line Items] Operating lease, weighted-average discount rate Operating Lease, Weighted Average Discount Rate, Percent Noncurrent assets Assets, Noncurrent Intersegment Intersegment Eliminations [Member] Reconciliation of Segment Adjusted EBITDA to net income attributable to PAGP Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Line 901 Incident Line901 Incident [Member] Represents information pertaining to the crude oil release from the Las Flores to Gaviota Pipeline in Santa Barbara County, California. Debt issuance costs Debt Issuance Costs, Net Less: Present value discount Finance Lease, Liability, Undiscounted Excess Amount Partners' Capital Note [Abstract] Partners' Capital Note [Abstract] Partners' Capital Note [Abstract] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Consolidated subsidiary, ownership interest (in units) Subsidiary of Limited Liability Company or Limited Partnership Ownership Interest Units The number of units of the subsidiary owned by the limited partnership representing limited partner interests. Number of misdemeanor charges found guilty, strict liability discharge Indictment, Number of Misdemeanor Charges, Guilty Verdict, Strict Liability Discharge Count Indictment, Number of Misdemeanor Charges, Guilty Verdict, Strict Liability Discharge Count Equity-indexed compensation expense Partners' Capital Account, Unit-based Payment Arrangement, Amount Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Consolidated Finance Subsidiary Issuer Consolidated Finance Subsidiary Issuer [Member] A consolidated finance subsidiary which is a co-issuer of the entity's debt securities. Total deferred tax assets Deferred Tax Assets, Net of Valuation Allowance Derivative Instruments Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member] Credit agreements and PAA commercial paper program Line Of Credit And Commercial Paper [Member] Represents information pertaining to the line of credit and commercial paper agreement entered into by the entity. Derivatives That Qualify for Hedge Accounting Derivatives, Methods of Accounting, Hedging Derivatives [Policy Text Block] Goodwill Balance at beginning of period Balance at end of period Goodwill Income Tax Examination [Table] Income Tax Examination [Table] Arrangements and Non-arrangement Transactions [Domain] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Net borrowings/(repayments) under PAA commercial paper program (Note 11) Proceeds from (Repayments of) Commercial Paper Net operating losses Deferred Tax Assets, Operating Loss Carryforwards Total purchase price of PAA common units repurchased Stock Repurchased and Retired During Period, Value Midland, Texas to Webster, Texas pipeline segment Midland, Texas To Webster, Texas Pipeline Segment [Member] Midland, Texas To Webster, Texas Pipeline Segment Intangible assets, estimate of risk, theoretical market participant Intangible Assets, Estimate of Risk, Theoretical Market Participant Intangible Assets, Estimate of Risk, Theoretical Market Participant Debt instrument face value Debt Instrument, Face Amount Other current assets Other Assets, Current Schedule of goodwill by segment and changes during the period Schedule of Goodwill [Table Text Block] Interest acquired Equity Method Investment, Ownership Percentage Acquired The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting that was acquired during the period. Saddlehorn Saddlehorn Pipeline Company Llc [Member] Saddlehorn Pipeline Company LLC, a crude oil pipeline company. Accounting Standards Update [Extensible List] Accounting Standards Update [Extensible List] Trade accounts payable Accounts Payable, Trade, Current Derivative position notional amount (in Terawatt hours) Derivative, Nonmonetary Notional Amount, Energy Measure Customer Concentration Risk Customer Concentration Risk [Member] Derivative Contract [Domain] Derivative Contract [Domain] Estimated amortization expense related to finite-lived intangible assets for the next five years Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] DILUTED WEIGHTED AVERAGE CLASS A SHARES OUTSTANDING (in shares) Diluted weighted average Class A shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Environmental Matters Environmental Costs, Policy [Policy Text Block] Conversion of Stock, Name [Domain] Conversion of Stock, Name [Domain] Operating segments number Number of Operating Segments Debt Disclosure [Abstract] Debt Disclosure [Abstract] 3.60% senior notes due November 2024 Senior Notes Due In November2024 At3.60 Percent [Member] Represents the 3.60 percent senior notes, which are due in November 2024. Inventory, Current [Table] Inventory, Current [Table] Deficiencies under minimum volume commitments, net Deficiencies Under Minimum Volume Commitments, Net Includes the impact of amounts billed to counterparties for their deficiency obligation, net of applicable amounts subsequently recognized into revenue. Certain agreements require counterparties to deliver, transport or throughput a minimum volume over an agreed upon period. Substantially all of such agreements were entered into with counterparties to economically support the return on the reporting entity's capital expenditure necessary to construct the related asset. Some of these agreements include make-up rights if the minimum volume is not met. A receivable from the counterparty is recorded in the period that services are provided or when the transaction occurs, including amounts for deficiency obligations from counterparties associated with minimum volume commitments. If a counterparty has a make-up right associated with a deficiency, the revenue attributable to the counterparty’s make-up right is deferred and is subsequently recognized at the earlier of when the deficiency volume is delivered or shipped, when the make-up right expires or when it is determined that the counterparty’s ability to utilize the make-up right is remote. Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Short-term Debt, Type [Axis] Short-term Debt, Type [Axis] Thereafter Contractual Obligation, to be Paid, after Year Five Remaining performance obligation Revenue, Remaining Performance Obligation, Amount Geographic Data Revenues from External Customers and Long-Lived Assets [Line Items] Counterparty Name [Axis] Counterparty Name [Axis] Finite-Lived Intangible Assets Finite-Lived Intangible Assets [Line Items] Document Fiscal Year Focus Document Fiscal Year Focus 2.60% senior notes due December 2019 Senior Notes Due In December2019 At2.60 Percent [Member] Represents the 2.60 percent senior notes, which are due in December 2019. 2022 Finite-Lived Intangible Asset, Expected Amortization, Year Two Proceeds from PAA GO Zone term loans (Note 11) Proceeds from Issuance of Secured Debt Restricted cash Restricted cash Restricted Cash, Current Entity Current Reporting Status Entity Current Reporting Status 3.65% senior notes due June 2022 Senior Notes Due In June2022 At3.65 Percent [Member] Represents the 3.65 percent senior notes, which are due in June 2022. Contract With Customer, Asset And Liability [Line Items] Contract With Customer, Asset And Liability [Line Items] [Line Items] for Contract With Customer, Asset And Liability [Table] Repurchase of common units by a subsidiary (Note 12) Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Repurchase of Shares by Subsidiary Short-term debt Total short-term debt Debt, Current Total Leases, Future Minimum Payments Due Leases, Future Minimum Payments Due Proceeds from sale of equity method investments Proceeds from sale of equity method investment Proceeds from Sale of Equity Method Investments Net Income Per Class A Share Earnings Per Share, Policy [Policy Text Block] Comprehensive income/(loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Equity Method Investment, Nonconsolidated Investee [Domain] Equity Method Investment, Nonconsolidated Investee [Domain] Inventory by category Inventory Disclosure [Abstract] Inventory, Linefill and Base Gas and Long-term Inventory Inventory, Linefill and Base Gas and Long-term Inventory Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Compensation for Injuries to, Destruction of, Loss of Use of, Natural Resources Consent Decree, Compensation for Injuries to, Destruction of, Loss of Use of, Natural Resources [Member] Consent Decree, Compensation for Injuries to, Destruction of, Loss of Use of, Natural Resources Total operating lease liabilities Lease liability Operating Lease, Liability Non-extending Lender Non-extending Lender [Member] Non-extending Lender [Member] Subsidiary or Equity Method Investee, Sale of Stock by Subsidiary or Equity Investee [Table] Subsidiary or Equity Method Investee, Sale of Stock by Subsidiary or Equity Investee [Table] Net loss in reclassified to earnings Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net Segment Reporting [Abstract] Segment Reporting [Abstract] 2024 Contractual Obligation, to be Paid, Year Four Adjustments: Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Capline Pipeline Company LLC Capline Pipeline Company LLC [Member] Capline Pipeline Company LLC Netting Adjustment: Offsetting [Abstract] Canadian federal and provincial income tax Foreign Income Tax Expense (Benefit) at Foreign Statutory Rate The amount of foreign income tax expense or benefit for the period computed by applying the foreign statutory tax rates to foreign pretax income from continuing operations. Debt Instrument [Line Items] Debt Instrument [Line Items] Change in Contract Liabilities [Roll Forward] Change In Contract With Customer, Liability [Roll Forward] Change In Contract With Customer, Liability [Roll Forward] Valuation Technique, Discounted Cash Flow Valuation Technique, Discounted Cash Flow [Member] Long-term inventory, Price/Unit of measure (in dollars per unit) Inventory, Weighted Average Price Per Unit Noncurrent The weighted-average price per unit of noncurrent inventory. Change in unrealized gains/(losses) included in earnings relating to Level 3 derivatives still held at the end of the period Fair Value, Net Derivative Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss) Net Carrying Value Presented on the Balance Sheet, Total Derivative Assets (Liabilities), at Fair Value, Net Entity Address, City or Town Entity Address, City or Town Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] OTHER ASSETS Other Assets, Noncurrent [Abstract] Other Assets, Noncurrent [Abstract] 2025 Lessee, Operating Lease, Liability, to be Paid, Year Five Storage, terminal and rail facilities Storage Terminal And Rail Facilities [Member] Long lived depreciable assets used primarily for the storage and terminalling of crude oil, refined products and liquefied petroleum gas, other natural gas-related petroleum products and rail facilities. Pipeline revenues supported by minimum volume commitments and long-term capacity agreements Pipeline Revenues Supported By Minimum Volume Commitments And Long-Term Capacity Agreements [Member] Pipeline revenues supported by minimum volume commitments and long-term capacity agreements Short-term lease cost Short-term Lease, Cost Fines or penalties assessed Loss Contingency Penalty or Fine Assessed Represents penalty or fine assessed on the entity in connection with an environmental matter. Net deferred gain/(loss) recognized in AOCI for derivatives Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Deferred tax benefit from change in tax rate Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability Lease assets Deferred Tax Liabilities, Leasing Arrangements Rail load / unload Rail Load And Unload [Member] Rail Load And Unload [Member] 2023 Finite-Lived Intangible Asset, Expected Amortization, Year Three Construction in progress Construction in Progress [Member] Transaction [Domain] Transaction [Domain] Summary of open derivative contracts Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block] Finance lease liabilities, noncurrent Finance Lease, Liability, Noncurrent Other current liabilities Other Liabilities, Current Net gain/(loss) on foreign currency revaluation Net Gain (Loss) On Foreign Currency Revaluation Includes gains and losses from the revaluation of foreign currency transactions and monetary assets and liabilities. Investment, Name [Domain] Investment, Name [Domain] Other comprehensive income/(loss) Total period activity Other Comprehensive Income (Loss), Net of Tax Gross margin Gross Margin Total revenues less (i) Purchases and related costs, (ii) Field operating costs, (iii) Depreciation and amortization and (iv) (Gains)/losses on asset sales and asset impairments, net. Leases Leases [Abstract] Average rate locked (percent) Derivative, Average Fixed Interest Rate 2024 Other Commitment, to be Paid, Year Four Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Total current assets Current assets Assets, Current Number of interest rate derivatives Number of Interest Rate Derivatives Held Goodwill Goodwill Disclosure [Text Block] Comprehensive (income)/loss attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Net operating loss carryforwards Operating Loss Carryforwards Earnings Per Share [Abstract] Earnings Per Share [Abstract] Income Tax Authority, Name [Axis] Income Tax Authority, Name [Axis] Deferred tax assets and liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Dividends [Axis] Dividends [Axis] Delek Logistics Partners, LP Delek Logistics Partners, LP [Member] Delek Logistics Partners, LP Disposal Group Name [Domain] Disposal Group Name [Domain] 2025 Finite-Lived Intangible Asset, Expected Amortization, Year Five Document Fiscal Period Focus Document Fiscal Period Focus Eagle Ford Terminals Corpus Christi LLC (“Eagle Ford Terminals”) Eagle Ford Terminals Corpus Christi Llc [Member] Eagle Ford Terminals Corpus Christi LLC, a crude oil terminal and dock company. Estimated undiscounted reserve for environmental liabilities Accrual for Environmental Loss Contingencies, Gross Partners Capital and Distribution [Line Items] Partners Capital and Distribution [Line Items] No definition available. Net income/(loss) attributable to PAGP including incremental net income/(loss) from assumed exchange of AAP units and AAP Management Units Net Income (Loss) Available to Common Stockholders, Diluted Equity Method Investment, Nonconsolidated Investee Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] Lessor, operating lease, term of contract Lessor, Operating Lease, Term of Contract Schedule of changes in shares outstanding Schedule of Stockholders Equity [Table Text Block] Entity Filer Category Entity Filer Category Product and Service [Domain] Product and Service [Domain] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Initial margin Initial Margin The amount of cash or securities required by a broker or counterparty as security for a trading or derivatives securities position. Noncontrolling Interests Consolidation, Subsidiaries or Other Investments, Consolidated Entities, Policy [Policy Text Block] Finance lease, weighted-average discount rate Finance Lease, Weighted Average Discount Rate, Percent Other Commitments [Axis] Other Commitments [Axis] Other Other Lease Cost Other Lease Cost 2021 Lessor, Operating Lease, Payment to be Received, Year One Crude oil pipelines Tariff Activities, Crude Oil Pipelines [Member] Tariff Activities, Crude Oil Pipelines [Member] Number of days after end of quarter within which distributions must be paid to shareholders Number of Days Required for Distribution to Shareholders after End of Quarter The number of days after the end of the relevant quarter within which distributions of available cash must be paid to shareholders. Revenues Revenue Benchmark [Member] PAA senior unsecured revolving credit facility Senior Unsecured Revolving Credit Facility [Member] Represents the PAA senior unsecured revolving credit facility. Other income/(expense), net Other Nonoperating Income (Expense) [Member] Investments in Unconsolidated Entities Schedule of Equity Method Investments [Line Items] Debt instrument, interest rate (as a percent) Debt Instrument, Interest Rate, Stated Percentage Remaining performance obligation, expected timing of satisfaction, period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Issuances of Series A preferred units by a subsidiary (in shares) Partners' Capital Account, Shares, Increase from Subsidiary Preferred Unit Issuance Partners' Capital Account, Shares, Increase from Subsidiary Preferred Unit Issuance Schedule of related party transactions Schedule of Related Party Transactions [Table Text Block] Other Product and Service, Other [Member] Shares outstanding (in shares) Balance, beginning of period (in shares) Balance, end of period (in shares) Limited Partners' Capital Account, Units Outstanding Net increase/(decrease) in cash and cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Undivided joint interest in Capline pipeline system Undivided Joint Interest In Capline Pipeline System [Member] Undivided Joint Interest In Capline Pipeline System Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Total distribution amount Dividends, Preferred Stock Dilutive shares resulting from assumed exchange of AAP units and AAP Management Units (in shares) Incremental Common Shares Attributable to Dilutive Effect of Contingently Issuable Shares Number of misdemeanor charges found guilty Indictment, Number of Misdemeanor Charges, Guilty Verdict Indictment, Number of Misdemeanor Charges, Guilty Verdict Offsetting Assets, Liabilities [Table] Offsetting Assets, Liabilities [Table] Disclosure of information about derivative and financial assets/ (liabilities) that are subject to offsetting, including enforceable master netting arrangements. Unit Distribution Unit Distribution [Member] Translation Adjustments Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member] Distributions per Class A share declared (in dollars per share) Distribution Made to Limited Partner, Distributions Declared, Per Unit COSTS AND EXPENSES Costs and Expenses [Abstract] Currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Eight Forward Starting Thirty Year Interest Rate Swaps 1.38 Percent Eight Forward Starting Thirty Year Interest Rate Swaps 1.38 Percent [Member] Eight Forward Starting Thirty Year Interest Rate Swaps 1.38 Percent Write down of investments Other than Temporary Impairment Losses, Investments State income tax Deferred State and Local Income Tax Expense (Benefit) Preferred Distribution Rate Reset Option Embedded Derivative Financial Instruments [Member] 2025 Long-Term Debt, Maturity, Year Five Ownership [Domain] Ownership [Domain] Felix Midstream LLC Felix Midstream LLC [Member] Felix Midstream LLC Interest, net of amounts capitalized Interest Paid, Excluding Capitalized Interest, Operating Activities Maturities Long-term Debt, Fiscal Year Maturity [Abstract] Net long position associated with crude oil purchases Net Long Position On Crude Oil Derivative Contracts [Member] Represents the derivative instruments utilized to hedge risk associated with crude oil purchases. Beginning balance Ending balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Organization and Basis of Consolidation and Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] 2021 Finite-Lived Intangible Asset, Expected Amortization, Year One Total revenues Total revenues Revenues Revenues Schedule of terms of outstanding interest rate derivatives Schedule of Derivative Instruments [Table Text Block] Total release costs probable of recovery Third Party Environmental Recoveries Received and Receivable Total third-party recoveries related to environmental remediation obligations, including amounts received to date and estimated amounts recoverable. Income taxes, net of amounts refunded Income Taxes Paid, Net Amounts probable of recovery under insurance and from third parties under indemnification agreements Recorded Third-Party Environmental Recoveries Receivable (Gains)/losses on asset sales and asset impairments, net (Note 6, Note 7) (Gains)/losses on asset sales and asset impairments, net (Note 6, Note 7) Gains/(losses) on asset sales and asset impairments, net Gain (Loss) on Sale of Assets and Asset Impairment Charges DILUTED NET INCOME/(LOSS) PER CLASS A SHARE (in dollars per share) Diluted net income/(loss) per Class A share (in dollars per share) Earnings Per Share, Diluted May 2016 Indictment Indictment In California Superior Court Santa Barbara County [Member] Indictment filed in California Superior Court, Santa Barbara County, with alleged violations of California law. Property tax abatement Property Tax Abatement [Member] Intangible asset representing the value of the entity's property tax abatement. Type of Arrangement and Non-arrangement Transactions [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Schedule of debt Schedule of Debt [Table Text Block] Long natural gas position for natural gas purchases Long Position On Natural Gas Contracts [Member] Represents derivative instruments consisting of long natural gas position related to purchase of natural gas. Summary of PAA's issuances of senior unsecured notes Schedule of Long-term Debt Instruments [Table Text Block] Depreciation expense Depreciation Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Reduction of property and equipment from deconsolidation Property, Plant and Equipment, Disposals Phillips 66 Company Phillips66 Company [Member] Represents the information pertaining to Phillips 66 Company and its subsidiaries. Entity Emerging Growth Company Entity Emerging Growth Company Natural gas Natural Gas [Member] Deferred income tax (expense)/benefit Deferred income tax expense/(benefit) Total deferred income tax expense/(benefit) Deferred Income Tax Expense (Benefit) Income taxes attributable to noncontrolling interests: Income Amounts Attributable to Noncontrolling Interest, Disclosures [Abstract] Gross Position - Liability Derivative Liability, Fair Value, Gross Liability Reconciliation of changes in fair value of derivatives classified as Level 3 Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Non-cash impairment losses upon classification to assets held for sale Impairment of Long-Lived Assets to be Disposed of Consolidated Entity Excluding VIE Consolidated Entity Excluding Variable Interest Entities (VIE) [Member] Finite-lived intangible assets, accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Maximum Maximum [Member] Field operating costs Operating Costs and Expenses Noncontrolling Interests Noncontrolling Interest [Member] Canadian Tax Authorities Canadian Tax Authorities [Member] Canadian Tax Authorities [Member] Derivatives That Do Not Qualify for Hedge Accounting Derivatives, Methods of Accounting, Derivatives Not Designated or Qualifying as Hedges [Policy Text Block] Recurring Fair Value Measurements Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Major Customers and Concentration of Credit Risk Concentration Risk Disclosure [Text Block] 2023 Lessor, Operating Lease, Payment to be Received, Year Three Trading Symbol Trading Symbol Revenues from related parties Revenue from Related Parties Crude Oil Sales Agreements Entered Into In Conjunction WIth Storage Arrangements And Future Inventory Exchanges Crude Oil Sales Agreements Entered Into In Conjunction WIth Storage Arrangements And Future Inventory Exchanges [Member] Crude Oil Sales Agreements Entered Into In Conjunction WIth Storage Arrangements And Future Inventory Exchanges [Member] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Net short time spread position hedging anticipated crude oil lease gathering purchases Net Short Time Spread Position On Anticipated Crude Oil Lease Gathering Purchase Contracts [Member] Represents the derivative instruments utilized to hedge anticipated crude oil lease gathering purchases. Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Operating lease liabilities Lessee, Operating Lease, Description [Abstract] Exchange Of AAP Units And Class B Shares For Class A Shares Exchange Of Aap Units And Class B Shares For Classa Shares [Member] Exchange right by which holders of AAP Class A units, representing a limited partner interest in AAP, may exchange such units for PAGP's Class A shares, when exchanged in conjunction with an equal number of PAGP Class B shares and, if applicable, general partner units. Remaining Performance Obligations Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Entity Shell Company Entity Shell Company Operating Segments Segment Reporting Information [Line Items] Recurring Fair Value Measures Fair Value, Recurring [Member] 2022 Finance Lease, Liability, to be Paid, Year Two Operating Segments Segment Reporting, Policy [Policy Text Block] Entity Public Float Entity Public Float PARTNERS’ CAPITAL Partners' Capital, Including Portion Attributable to Noncontrolling Interest [Abstract] Document Type Document Type 2025 Contractual Obligation, to be Paid, Year Five ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Other income/(expense), net Other Nonoperating Income (Expense) Transportation Segment Transportation [Member] The segment of the entity of which operations generally consist of fee-based activities associated with transporting crude oil and natural gas liquids on pipelines, gathering systems, trucks and barges. Trade accounts payable and other Increase (Decrease) in Accounts Payable and Accrued Liabilities Segments [Axis] Segments [Axis] Level 3 Fair Value, Inputs, Level 3 [Member] Inventory valuation adjustments (Note 5) Charge related to the write-down of inventory Inventory Write-down Lessee Lessee, Leases [Policy Text Block] Total Contractual Obligation Other current assets Other Current Assets [Member] Net Carrying Value Presented on the Balance Sheet Derivative asset Derivative Asset Limited Partners Limited Partner [Member] Forward exchange contracts that exchange CAD for USD maturing in 2021 Foreign Exchange Forward Contracts That Exchange Canadian Dollars For US Dollars At Average Rate Disclosed Maturing in 2021 [Member] Foreign Exchange Forward Contracts That Exchange Canadian Dollars For US Dollars At Average Rate Disclosed Maturing in 2021 [Member] Line of Credit Line of Credit [Member] Thereafter Lessor, Operating Lease, Payment to be Received, after Year Five Net deferred tax liabilities Deferred Income Tax Liabilities, Net Derivatives and Risk Management Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Total borrowings Proceeds from Issuance of Debt Oxy Oxy [Member] Occidental Petroleum Corporation ("Oxy") or its subsidiaries. Trade accounts receivable and other Increase (Decrease) in Accounts and Other Receivables 4.70% senior notes due June 2044 Senior Notes Due In June2044 At4.70 Percent [Member] Represents the 4.70 percent senior notes, which are due in June 2044. OPERATING INCOME/(LOSS) Operating income Operating income/(loss) Operating Income (Loss) Fourth quarter distribution Fourth Quarter Distribution [Member] The distribution associated with earnings for the fourth quarter of the current fiscal year which are paid in the first quarter of the following fiscal year. Other long-term debt, net Noncurrent portion of other long-term debt Other Long-term Debt, Noncurrent Contracts with Customers, Change in Contract Asset and Liability Balance Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Estimated undiscounted reserve for environmental liabilities, long-term Accrued Environmental Loss Contingencies, Noncurrent Pipelines and related facilities Pipelines [Member] Computation of Basic and Diluted Net Income Per Class A Share [Table] Computation of Basic and Diluted Earnings Per Limited Partner Unit [Table] Schedule reflecting the computation of basic and diluted earnings per limited partner unit. Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] COMMITMENTS AND CONTINGENCIES (NOTE 19) Commitments and Contingencies Finance lease liabilities Lessee, Finance Lease, Description [Abstract] Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five Entity Address, State or Province Entity Address, State or Province Marathon Petroleum Corporation Marathon Petroleum Corporation [Member] Represents the information pertaining to Marathon Petroleum Corporation and its subsidiaries. Income tax expense/(benefit) at statutory rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Foreign currency translation adjustments Goodwill, Foreign Currency Translation Gain (Loss) Repurchase of common units by a subsidiary (in shares) Partners' Capital Account, Shares, Cancellation Of Shares Partners' Capital Account, Shares, Cancellation Of Shares Consolidated subsidiary, ownership interest (as a percent) Consolidated subsidiary, ownership interest held by the parent (as a percent) Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest Other Commitments [Table] Other Commitments [Table] Long-term operating lease right-of-use assets, net Operating Lease, Right-of-Use Asset Other Long-Term Assets, Net Other Assets Disclosure [Text Block] Number of misdemeanor charges found guilty, strict liability animal takings Indictment, Number of Misdemeanor Charges, Guilty Verdict, Strict Liability Animal Takings Count Indictment, Number of Misdemeanor Charges, Guilty Verdict, Strict Liability Animal Takings Count Gain on repurchase of senior notes Gain (Loss) on Extinguishment of Debt Property and equipment in excess of tax values Deferred Tax Liabilities, Property, Plant and Equipment Alberta Government, Canada Alberta Government, Canada [Member] Alberta Government, Canada 2021 Finance Lease, Liability, to be Paid, Year One Property and equipment acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Schedule of Change in Asset Retirement Obligation Schedule of Change in Asset Retirement Obligation [Table Text Block] Customer [Axis] Customer [Axis] Income Taxes Income Tax, Policy [Policy Text Block] Hedging Designation [Domain] Hedging Designation [Domain] Total lease cost Lease, Cost Percentage of available cash distributed Percentage Distribution of Available Cash This element represents the percentage of cash distributed out of available cash. Red River Pipeline Company LLC Red River Pipeline Company LLC [Member] Red River Pipeline Company LLC Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] AAP AAP Plains Aap L P [Member] Represents information pertaining to Plains, AAP L.P (AAP). Other investing activities Payments for (Proceeds from) Other Investing Activities Noncontrolling interests Partners' Capital Attributable to Noncontrolling Interest Equity-indexed compensation expense Equity Indexed Compensation Expense Awards That Will Or May Be Settled In Units Includes equity-indexed compensation expense associated with awards that will or may be settled in units. Beginning balance Ending balance Asset Retirement Obligation Cumulative Effect, Period of Adoption, Adjusted Balance Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Thereafter Long-Term Debt, Maturity, after Year Five Revenue from contracts with customers Revenues from contracts with customers Revenue from Contract with Customer, Excluding Assessed Tax Thereafter Other Commitment, to be Paid, after Year Five Inventory disclosures Inventory [Line Items] Common Units and Series A Preferred Units Common Units And Series A Preferred Units [Member] Common Units And Series A Preferred Units [Member] Business Acquisition [Axis] Business Acquisition [Axis] Geographical [Domain] Geographical [Domain] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Lender Type [Axis] Lender Type [Axis] Lender Type [Axis] Fair value of investment in unconsolidated entity Equity Method Investments, Fair Value Disclosure Forecast Forecast [Member] Canadian federal and provincial income tax Deferred Foreign Income Tax Expense (Benefit) Basic Net Income/(Loss) per Class A Share Earnings Per Share, Basic and Diluted [Abstract] Third Party Third Party [Member] Third Party [Member] Entity Voluntary Filers Entity Voluntary Filers Significant acquisition-related expenses Business Combination, Acquisition Related Costs PAA Plains All American Pipeline L P [Member] Represents the information pertaining to Plains All American Pipeline, L.P. ("PAA"). Intersegment Adjustment Eliminations And Reconciling Items [Member] Adjustment to reconcile revenues from external customers as presented to the Chief Operating Decision Maker to that presented on the statement of operations. Credit Facility [Axis] Credit Facility [Axis] Exchange Traded Exchange Traded [Member] Debt instrument fair value Debt Instrument, Fair Value Disclosure Amount of assessments received, including penalty and interest Income Tax Examination, Amount of Assessment Disputed Represents amount of assessment received related to an income tax examination which the reporting entity disputes. Foreign Foreign Tax Authority [Member] NGL Terminals NGL Terminals [Member] NGL Terminals Diamond Pipeline LLC (“Diamond”) Diamond Pipeline Llc [Member] Diamond Pipeline LLC, a crude oil pipeline company. Number of debt instruments Debt, Number Of Instruments Debt, Number Of Instruments Business Combinations [Abstract] Business Combinations [Abstract] Distribution Type [Axis] Distribution Type [Axis] Civil Penalties Consent Decree, Civil Penalties [Member] Consent Decree, Civil Penalties Operating Lessee, Operating Lease, Liability, Payment, Due [Abstract] Sale of noncontrolling interest in a subsidiary (Note 12) Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Sale of Interest by Parent PAA LTIP Plains All American Long Term Incentive Plans [Member] Represents the information pertaining to Plains All American long-term incentive plans. Changes in goodwill Goodwill [Roll Forward] Calculation of basic and diluted net income per Class A share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Long fuel gas position for fuel gas requirements Long Position On Fuel Gas Requirements Contracts [Member] Long Position On Fuel Gas Requirements Contracts Rollforward of Level 3 Net Asset/(Liability) Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Counterparty deficiencies Counterparty Deficiencies Amount associated with deficiencies by counterparties of their contractual minimum commitments. Leases Lessee, Finance Leases [Text Block] Diluted Net Income/(Loss) per Class A Share Dilutive Securities, Effect on Basic Earnings Per Share [Abstract] Total repayments Repayments of Debt Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Investments in and summarized financial information for entities accounted for under the equity method of accounting Equity Method Investments [Table Text Block] Foreign currency translation adjustments Goodwill, Accumulated Impairment, Foreign Currency Translation Gain (Loss) Goodwill, Accumulated Impairment, Foreign Currency Translation Gain (Loss) Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Entity Central Index Key Entity Central Index Key Related Party [Domain] Related Party [Domain] Committed borrowing capacity Line of Credit Facility, Current Borrowing Capacity Related Party Transaction [Line Items] Related Party Transaction [Line Items] Derivative Instrument [Axis] Derivative Instrument [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Other long-term liabilities and deferred credits Other Noncurrent Liabilities [Member] GO Zone Term Loan Series 2010 GO Zone Term Loan 2 [Member] GO Zone Term Loan 2 [Member] 2025 Leases, Future Minimum Payments, Due in Five Years Leases, Future Minimum Payments, Due in Five Years PAA senior notes Senior Notes [Member] Distribution made to limited partner, unit distributions paid (in units) Distribution Made to Limited Partner, Unit Distribution Geographical [Axis] Geographical [Axis] Undivided joint interest ownership percentage Undivided Joint Interest Ownership Percentage Undivided Joint Interest Ownership Percentage Crude oil transactions Crude Oil Transactions [Member] Crude Oil Transactions [Member] Segments [Domain] Segments [Domain] Derivative instruments Deferred Tax Assets, Derivative Instruments Crude Oil Terminal Crude Oil Terminal [Member] Crude Oil Terminal Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] 2023 Contractual Obligation, to be Paid, Year Three 2024 Long-Term Debt, Maturity, Year Four Capitalized interest Capitalized interest related to contributions to unconsolidated entities Interest Costs Capitalized Income Statement Location [Axis] Income Statement Location [Axis] Entity Common Stock Outstanding (in shares) Entity Common Stock, Shares Outstanding Number of days after end of quarter within which distributions must be paid to unitholders Number of Days Required for Distribution to Unitholders after End of Quarter The number of days after the end of the relevant quarter within which distributions of available cash must be paid to unitholders. Recognized gains related to sale of assets Gain On Disposition Of Assets Gain On Disposition Of Assets Net borrowings/(repayments) under PAA senior secured hedged inventory facility (Note 11) Net Proceeds from (Repayments of) Hedged Inventory Facility The net cash inflow (outflow) due to borrowings (repayments) on the hedged inventory facility. Notional amount Derivative, Notional Amount Amortization expense for finite-lived intangible assets Amortization of Intangible Assets Total net derivative asset/(liability) Derivative, Fair Value, Net Eagle Ford Pipeline LLC (“Eagle Ford Pipeline”) Eagle Ford Pipeline L L C [Member] Eagle Ford Pipeline LLC, a crude oil pipeline company. Investments in Unconsolidated Entities Equity Method Investments and Joint Ventures Disclosure [Text Block] GO Zone Term Loan Series 2009 GO Zone Term Loan 1 [Member] GO Zone Term Loan 1 [Member] Operating Segments Segment Reporting Disclosure [Text Block] Trade accounts receivable and other receivables, net Trade accounts receivable and other receivables, net Receivables, Net, Current Operating cash flows for finance leases Finance Lease, Interest Payment on Liability Inventory, Linefill and Base Gas and Long-term Inventory Inventory Linefill and Base Gas and Long Term Inventory Disclosure [Text Block] The complete disclosure related to inventory, linefill and base gas and long-term inventory. This may include, but is not limited to, the basis of stating inventory, linefill, and base gas and long-term inventory, the method of determining inventory, linefill and base gas and long-term inventory cost, the major classes of inventory, linefill and base gas and long-term inventory, and the nature of the cost elements included in inventory, linefill and base gas and long-term inventory. If inventory, linefill and base gas and long-term inventory is stated above cost, accrued net losses on firm purchase commitments for inventory, linefill and base gas and long-term inventory and losses resulting from valuing inventory, linefill and base gas and long-term inventory at the lower-of-cost-or-market may also be included. Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] Scenario [Axis] Scenario [Axis] Title of 12(b) Security Title of 12(b) Security Cash distributions per Class A share (in dollars per share) Distributions per common unit (in dollars per share) Distribution Made to Limited Partner, Distributions Paid, Per Unit Disposal Group Classification [Axis] Disposal Group Classification [Axis] Linefill and base gas, Price/Unit of measure (in dollars per unit) Inventory, Weighted Average Price Per Unit Linefill and Base Gas The weighted-average price per unit of linefill and base gas inventory. Finite-lived intangible assets, net Finite-Lived Intangible Assets, Net Long-Lived Assets Long-Lived Assets 2022 Lessor, Operating Lease, Payment to be Received, Year Two Schedule of Operating Lease Maturity Finance Lease, Liability, Fiscal Year Maturity [Table Text Block] 2021 Contractual Obligation, to be Paid, Year One Interest expense (net of capitalized interest of $24, $34 and $30, respectively) Interest expense, net Interest Expense Depreciation and amortization Depreciation and amortization Depreciation, Depletion and Amortization Components of income tax expense Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Ownership percentage Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Organization Consolidation and Presentation of Financial Statements [Table] Organization Consolidation and Presentation of Financial Statements [Table] Schedule detailing information related to organization, basis of accounting, or basis of presentation, used to prepare the financial reports of the entity. Product and Service [Axis] Product and Service [Axis] Proceeds from sales of assets (Note 7) Proceeds from sales of assets Proceeds from Sale of Productive Assets Cash paid in connection with acquisitions, net of cash acquired (Note 7) Payments to acquire businesses Payments to Acquire Businesses and Interest in Affiliates Partner Capital Components [Axis] Partner Capital Components [Axis] Other long-term assets, net Other Noncurrent Assets [Member] 2025 Finance Lease, Liability, to be Paid, Year Five Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] 2025 Other Commitment, to be Paid, Year Five 2022 Long-Term Debt, Maturity, Year Two Weighted-average maturity of long-term debt Long Term Debt Weighted Average Maturity This element represents the weighted-average maturity of senior notes and term loans outstanding. Amount by which investments in unconsolidated entities exceeded our share of the underlying equity in the net assets Equity Method Investment, Difference Between Carrying Amount and Underlying Equity Amounts recognized as revenue Contract with Customer, Liability, Revenue Recognized Liabilities settled Asset Retirement Obligation, Liabilities Settled Proceeds from sale, including proceeds attributable to agreements entered into in conjunction with sale of productive assets us-gaap_ProceedsFromSaleOfProductiveAssetsAndAgreements Proceeds from the sale of productive assets and agreements entered into in conjunction with the sale. Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Investment in partnerships Deferred Tax Assets Investments in Subsidiaries Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the entity's investment in its subsidiaries. Depreciation and amortization of unconsolidated entities Depreciation And Amortization Of Unconsolidated Entities The reporting entity’s proportionate share of depreciation and amortization expense and gains or losses on significant asset sales of unconsolidated entities. 2023 Leases, Future Minimum Payments, Due in Three Year Leases, Future Minimum Payments, Due in Three Year GP LLC Plains All American G P L L C [Member] Represents the information pertaining to Plains All American GP LLC, ("GP LLC"), in which the reporting entity owns a managing member interest. Debt Instrument [Axis] Debt Instrument [Axis] Partner Type [Axis] Partner Type [Axis] Organization and basis of presentation Organization and Basis of Presentation [Line Items] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Quarterly financial data (unaudited) Quarterly Financial Information [Table Text Block] Operating Segments Operating Segments [Member] 2024 Leases, Future Minimum Payments, Due in Four Years Leases, Future Minimum Payments, Due in Four Years Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Net Carrying Value Presented on the Balance Sheet Derivative liability Derivative Liability 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] Litigation Case [Axis] Litigation Case [Axis] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Unitholder Derivative Lawsuits Unitholder Derivative Lawsuits [Member] Represents information related to unitholder derivative lawsuits filed against the company. Field Operating Costs and General and Administrative Expenses Field Operating Costs and General and Administrative Expenses [Policy Text Block] Describes the entity's accounting policies for field operating costs, and general and administrative expenses. Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Maintenance capital Maintenance Capital Capital expenditures for the replacement of partially or fully depreciated assets in order to maintain the operating and/or earnings capacity of the company's existing assets. Subsequent Event Subsequent Event [Member] Partners' Capital and Distributions Partners' Capital Notes Disclosure [Text Block] White Cliffs Pipeline, LLC White Cliffs Pipeline Llc [Member] White Cliffs Pipeline, LLC, a crude oil pipeline company. STACK Pipeline LLC (“STACK”) STACK Pipeline LLC [Member] STACK Pipeline LLC [Member] U.S. federal Domestic Tax Authority [Member] Outstanding letters of credit Letters of credit Letters of Credit Outstanding, Amount Concentration Risk Type [Axis] Concentration Risk Type [Axis] Estimated size of release to reach Pacific Ocean (in bbl) Estimated Size Of Release To Reach Body Of Water Estimated Size Of Release To Reach Body Of Water Class A shareholders (194,051,436 and 182,138,592 shares outstanding, respectively) Limited Partners' Capital Account Number of misdemeanor charges not guilty, strict liability animal takings Indictment, Number of Misdemeanor Charges, Not Guilty Verdict, Strict Liability Animal Takings Count Indictment, Number of Misdemeanor Charges, Not Guilty Verdict, Strict Liability Animal Takings Count Revenue Recognition Revenue [Policy Text Block] Principal Owner Principal Owner [Member] Non-cash impairment losses, long-lived assets Impairment of Long-Lived Assets Held-for-use Number of misdemeanor charges found guilty, reporting Indictment, Number of Misdemeanor Charges, Guilty Verdict, Reporting Count Indictment, Number of Misdemeanor Charges, Guilty Verdict, Reporting Count Distributions paid to Class A shareholders (Note 12) Distribution Made to Limited Partner, Cash Distributions Paid Recognized gains/(losses) related to sale of assets, net Gain (Loss) on Disposition of Assets Repayments of PAA senior notes (Note 11) Repayments of PAA senior notes Repayments of Senior Debt Long-term operating lease liabilities Operating Lease, Liability, Noncurrent 2024 Finite-Lived Intangible Asset, Expected Amortization, Year Four Redemption Right exercises (in shares) Limited Partners Capital Account, Shares Issued (Redeemed) in Redemption Right Exercises Limited Partners Capital Account, Shares Issued (Redeemed) in Redemption Right Exercises Exchange Right exercises (in shares) Limited Partners Capital Account Shares Issued (Exchanged) in Exchange Right Exercises Represents the number of shares issued (exchanged) in connection with Exchange Right exercises. 2021 Leases, Future Minimum Payments, Due in One Year Leases, Future Minimum Payments, Due in One Year Gain on/(impairment of) investments in unconsolidated entities, net Gain On/(Impairment Of) Investments In Unconsolidated Entities, Net [Member] Gain On/(Impairment Of) Investments In Unconsolidated Entities, Net Class C shares held by PAA (in shares) Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest, Units Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest, Units Goodwill impairment analysis, projected cash flows, period Goodwill Impairment Analysis, Projected Cash Flows, Period Goodwill Impairment Analysis, Projected Cash Flows, Period Other long-term debt Other Long Term Debt [Member] Other types of long-term debt not specifically identified. CURRENT ASSETS Assets, Current [Abstract] CASH FLOWS FROM INVESTING ACTIVITIES Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] 4.30% senior notes due January 2043 Senior Notes Due In January2043 At4.30 Percent [Member] Represents the 4.30 percent senior notes, which are due in January 2043. Common equity repurchase program, remaining amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Other long-term assets, cost Other Assets, Noncurrent, Gross Gross amount, as of the balance sheet date, of noncurrent assets not separately disclosed in the balance sheet. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer). Goodwill, gross Goodwill, Gross Comprehensive income/(loss) attributable to PAGP Comprehensive Income (Loss), Net of Tax, Attributable to Parent 2023 Finance Lease, Liability, to be Paid, Year Three AAP Management Units AAP Management Units [Member] AAP Management Units Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Summary of differences between income tax expense based on the statutory federal income tax rate and the effective income tax expense Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] 2021 Long-Term Debt, Maturity, Year One Legal Entity [Axis] Legal Entity [Axis] City Area Code City Area Code Ratio for conversion or exchange of units Unit Conversion Ratio Ratio applied to determine the number of units or shares that would be received by holders choosing to convert or exchange one class of units or shares into another, as specified. Los Angeles Basin Crude Oil Terminals Los Angeles Basin Crude Oil Terminals [Member] Los Angeles Basin Crude Oil Terminals Gain/(loss) recognized Embedded Derivative, Gain (Loss) on Embedded Derivative, Net Income Tax Authority [Axis] Income Tax Authority [Axis] Document Period End Date Document Period End Date Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Enterprise Products Partners, L.P. Enterprise Products Partners, L.P. [Member] Enterprise Products Partners, L.P. Distributions (Note 12) Partners' Capital Account, Distributions Net crude oil grade basis spread positions Crude Oil Grade Basis Position [Member] Represents the derivative instruments that hedge crude oil purchases based on grade basis differentials. Common equity repurchase program, authorized amount Stock Repurchase Program, Authorized Amount Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] NET INCOME/(LOSS) Net income/(loss) Net income/(loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Impairment of Long-Lived Assets (Held and Used) Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Goodwill impairment analysis, discount rate, cost of capital, theoretical market participant Goodwill Impairment Analysis, Cost of Capital, Theoretical Market Participant Estimate of cost of capital for theoretical market participant used in goodwill impairment analysis. Other trade accounts receivables and other receivables Accounts and Other Receivables, Net, Current Liabilities incurred Asset Retirement Obligation, Liabilities Incurred Quarterly Financial Information Disclosure [Abstract] Quarterly Financial Information Disclosure [Abstract] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Cash consideration Payments to Acquire Productive Assets Settlement of terminated interest rate hedging instruments Net Cash (Paid) Received for Terminated Hedging Instruments The net cash (paid) received for terminated hedging instruments. Distributions to PAGP SEC Schedule, 12-04, Cash Dividends Paid to Registrant, Consolidated Subsidiaries Schedule of Debt Instruments [Table] Schedule of Debt Instruments [Table] A table or schedule providing information pertaining to short-term and long-term debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. Other financing activities Proceeds from (Payments for) Other Financing Activities Cover [Abstract] Measurement Input Type [Axis] Measurement Input Type [Axis] Linefill and base gas, Volumes (in barrels or in Mcf) Inventory, Volumes Linefill and Base Gas The volume of linefill and base gas inventory as of the balance sheet date. PAA common units repurchased and cancelled Stock Repurchased and Retired During Period, Shares Distributions on earnings from unconsolidated entities Proceeds from Equity Method Investment, Distribution Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Equity Method Investees Equity Method Investee [Member] Leases Lessee, Operating Leases [Text Block] Public Public Unit Holders [Member] Public Unit Holders [Member] Coverage ratio of debt-to-EBITDA, maximum Debt Instrument, Coverage Ratio Debt to EBITDA Maximum Represents the maximum ratio of debt to EBITDA (earnings before interest, taxes, depreciation and amortization) required to be maintained under the credit agreement. Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Customer contracts and relationships Customer Relationships [Member] Purchases and related costs Cost of Goods and Services Sold Total costs and expenses Costs and Expenses Equity Components [Axis] Equity Components [Axis] Partner Capital Components [Domain] Partner Capital Components [Domain] Asset Retirement Obligations Asset Retirement Obligation [Policy Text Block] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Supply and Logistics segment revenues Sales And Related Revenues [Member] Revenue from the sale of crude oil, NGL and natural gas during the period. Minimum Minimum [Member] Balance Sheet Location [Domain] Balance Sheet Location [Domain] State income tax, net of federal benefit Deferred State and Local Income Tax Expense (Benefit), Net of Federal Benefit (Expense) Deferred State and Local Income Tax Expense (Benefit), Net of Federal Benefit (Expense) Other AOCI, Other, Including Portion Attributable to Noncontrolling Interest [Member] AOCI, Other, Including Portion Attributable to Noncontrolling Interest [Member] 5.75% senior notes due January 2020 Senior Notes Due In January2020 At5.75 Percent [Member] Represents the 5.75 percent senior notes, which are due in January 2020. Income Tax Authority, Name [Domain] Income Tax Authority, Name [Domain] Net (income)/loss attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Short propane position related to subsequent sale of products Short Propane Position Contracts Related To Subsequent Sale Of Product [Member] Represents the derivative instruments in a short position for propane that hedges the subsequent sale of products derived from our natural gas processing and NGL fractionation activities. Entity Interactive Data Current Entity Interactive Data Current United States UNITED STATES Percentage of Capline pipeline system owned Noncash or Part Noncash Acquisition, Interest Acquired Restrictions on Cash and Cash Equivalents Restrictions on Cash and Cash Equivalents [Table Text Block] REVENUES Revenues [Abstract] Commodity derivatives Commodity Contract [Member] Canadian federal and provincial income tax Current Foreign Tax Expense (Benefit) Derivative [Table] Derivative [Table] Conversion of AAP Management Units (in shares) Limited Partners Capital Account Shares Issued From Conversion Represents the number of shares issued in connection with the conversion of units of a subsidiary. Income Tax Examination [Line Items] Income Tax Examination [Line Items] Revenues: Segment Reporting Information, Revenue for Reportable Segment [Abstract] Total deferred tax liabilities Deferred Tax Liabilities, Gross Conversion of AAP Management Units into AAP Units Conversion Of Aap Management Units Into Aap Units [Member] Right of holders of vested AAP Management Units, which represent a profits interest in AAP, to convert such units into AAP units and a like number of the entity's Class B shares. Other Contract with Customer, Liability, Other Contract with Customer, Liability, Other Net loss in reclassification to earnings Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Consolidation Items [Axis] Consolidation Items [Axis] 2022 Leases, Future Minimum Payments, Due in Two Years Leases, Future Minimum Payments, Due in Two Years Derivatives Not Designated as a Hedge Not Designated as Hedging Instrument [Member] Derivative Hedge Effectiveness Determination Derivatives, Methods of Accounting, Hedge Effectiveness [Policy Text Block] Goodwill impairment losses (Note 8) Impairment Goodwill impairment losses Goodwill impairment losses Goodwill, Impairment Loss Total Lessee, Operating Lease, Liability, to be Paid Other Deferred Tax Assets, Other Purchases and Related Costs Cost of Goods and Service [Policy Text Block] Deferred tax liabilities: Components of Deferred Tax Liabilities [Abstract] Foreign Currency Transactions/Translation Foreign Currency Transactions and Translations Policy [Policy Text Block] Other, accumulated amortization Accumulated Amortization of Other Assets Miscellaneous, Noncurrent Accumulated Amortization of Other Assets Miscellaneous, Noncurrent Derivative Hedge Accounting Documentation Derivatives, Methods of Accounting, Hedge Documentation [Policy Text Block] 2022 Other Commitment, to be Paid, Year Two Beginning Balance Ending Balance Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs Red Oak Pipeline LLC (“Red Oak”) Red Oak Pipleline LLC [Member] Red Oak Pipleline LLC Derivative Liability Positions Offsetting Derivative Liabilities [Abstract] Disposed of by sale Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] Document Transition Report Document Transition Report Deferred income tax expense/(benefit): Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Gross Position - Asset Derivative Asset, Fair Value, Gross Asset Derivatives entered into during the period Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis Unobservable Inputs Reconciliation, Derivatives Entered Into Amount of derivatives entered into classified as a derivative asset (liability) after deduction of derivative asset (liability), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. OTHER INCOME/(EXPENSE) Nonoperating Income (Expense) [Abstract] Level 2 Fair Value, Inputs, Level 2 [Member] Minimum Volume Commitments Minimum Volume Commitment Agreements [Member] Agreements that require counterparties to deliver, transport or throughput a minimum volume over an agreed upon period, some of which include make-up rights. Current income tax expense: Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Long-term inventory, Volumes (in barrels or in Mcf) Inventory, Volumes, Noncurrent The volume of noncurrent inventory as of the balance sheet date. Plains All American GP LLC 2006 Long-Term Incentive Tracking Unit Plan Plains All American G P L L C Long Term Incentive Tracking Unit Plan [Member] Represents information related to the long-term incentive tracking unit plan adopted by Plains All American GP LLC in 2006 for non-officer employees. Interest rate fair value hedge liability at fair value Interest Rate Fair Value Hedge Liability at Fair Value Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Axis] Credit Facility [Domain] Credit Facility [Domain] Deferred tax assets: Components of Deferred Tax Assets [Abstract] Litigation Case [Domain] Litigation Case [Domain] BASIC NET INCOME/(LOSS) PER CLASS A SHARE (in dollars per share) Basic net income/(loss) per Class A share (in dollars per share) Earnings Per Share, Basic Entity File Number Entity File Number Other current liabilities Other Current Liabilities [Member] Operating lease, weighted-average lease term Operating Lease, Weighted Average Remaining Lease Term Derivative Asset Positions Offsetting Derivative Assets [Abstract] NGL pipelines Tariff Activities, NGL Pipelines [Member] Tariff Activities, NGL Pipelines [Member] CASH FLOWS FROM OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] 2024 Lessor, Operating Lease, Payment to be Received, Year Four Sale of noncontrolling interest in a subsidiary (Note 12) Proceeds from sale of noncontrolling interests Proceeds from Noncontrolling Interests Partners' Capital and Distributions [Table] Partners' Capital and Distributions [Table] Disclosure reflecting information pertaining to Partners' Capital and related distributions. Equity-indexed compensation expense Share-based Payment Arrangement, Expense Plains GP Holdings, L.P. Long-Term Incentive Plan Plains G P Holdings Long Term Incentive Plans [Member] Represents information pertaining to Plains GP Holdings, L.P. long-term incentive plan. 4.50% senior notes due December 2026 Senior Notes Due in December 2026 At 4.50 Percent [Member] Senior Notes Due in December 2026 At 4.50 Percent [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Recoveries from insurance carriers Loss Contingency, Receivable, Proceeds Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Disposal Group Name [Axis] Disposal Group Name [Axis] Document Annual Report Document Annual Report Contract with Customer, Counterparty Deficiencies Contract with Customer, Counterparty Deficiencies [Table Text Block] Contract with Customer, Counterparty Deficiencies Short-term debt: Short-term Debt [Abstract] PAA commercial paper notes Commercial Paper [Member] Average exchange rate (cad per usd) Derivative, Average Forward Exchange Rate 2024 Finance Lease, Liability, to be Paid, Year Four Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Short-term notes and borrowings Short-term Debt 4.90% senior notes due February 2045 Senior Notes Due In February2045 At4.90 Percent [Member] Represents the 4.90 percent senior notes, which are due in February 2045. Debt Debt, Policy [Policy Text Block] Other Deferred Tax Liabilities, Other Divestitures Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Offering price percentage Senior Notes Public Offering Price Percentage of face value at which senior notes are sold. Line 901 incident Significant Costs Related To Legal And Environmental Remediation Matters Significant Costs Related To Legal And Environmental Remediation Matters Gross Position - Liability Derivative Asset, Fair Value, Gross Liability Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Total liabilities and partners’ capital Liabilities and Equity Legal, Environmental or Regulatory Matters Loss Contingencies [Line Items] Net loss deferred in AOCI Accumulated Other Comprehensive Income (Loss), Net of Tax Income Taxes Income Tax Disclosure [Text Block] Total long-term liabilities Noncurrent liabilities Liabilities, Noncurrent Amount of disputed assessments paid Income Tax Examination, Amount of Disputed Assessment Paid Represents the amount paid of the amount assessed related to an income tax examination which the reporting entity disputes. 2023 Other Commitment, to be Paid, Year Three Operating lease cost Operating Lease, Cost Hedging Relationship [Axis] Hedging Relationship [Axis] Inventory, Price/Unit of measure (in dollars per unit) Inventory, Weighted Average Price Per Unit, Current The weighted-average price per unit of current inventory. General and administrative expenses Unallocated general and administrative expenses General and Administrative Expense Counterparty deficiencies unbilled and uncollected Counterparty Deficiencies Unbilled And Uncollected Amount that has yet to be billed or collected as of the balance sheet date associated with deficiencies by counterparties of their contractual minimum commitments. Antidilutive securities excluded from computation of earnings per share (per share) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Current income tax expense Total current income tax expense Current Income Tax Expense (Benefit) Total partners’ capital Balance, beginning of period Balance, end of period Partners' Capital, Including Portion Attributable to Noncontrolling Interest Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Finance lease, weighted-average lease term Finance Lease, Weighted Average Remaining Lease Term Other Other Noncash Income (Expense) Equity Component [Domain] Equity Component [Domain] Estimated Useful Lives Finite-Lived Intangible Asset, Useful Life Basic and diluted earnings per share Basic and Diluted Earnings Per Share [Line Items] Equity Method Investment, Nonconsolidated Investee [Axis] Equity Method Investment, Nonconsolidated Investee [Axis] Net income Gross Profit Discount rate, asset impairment analysis, cost of capital, theoretical market participant Impairment Analysis, Cost of Capital, Theoretical Market Participant Impairment Analysis, Cost of Capital, Theoretical Market Participant Property and equipment, net Carrying value of undivided joint interest Property, Plant and Equipment, Net Entity Tax Identification Number Entity Tax Identification Number Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Penalties or compensation paid Loss Contingency, Damages Paid, Value Equity-Indexed Compensation Plans Share-based Payment Arrangement [Text Block] Interest Rate Derivatives Interest rate derivatives Interest Rate Contract [Member] Common Equity Repurchase Program Common Equity Repurchase Program [Member] Common Equity Repurchase Program NET INCOME/(LOSS) ATTRIBUTABLE TO PAGP Net income/(loss) attributable to PAGP Net income attributable to PAGP Net Income (Loss) Attributable to Parent Changes in assets and liabilities, net of acquisitions: Increase (Decrease) in Operating Capital [Abstract] Weighted-average discount rate: Leases, Weighted Average Discount Rate, Percent [Abstract] Leases, Weighted Average Discount Rate, Percent Repurchase of common units by a subsidiary (Note 12) Payments to Noncontrolling Interests Units outstanding that include DERs (in units) Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other than Options Including Distribution Equivalent Rights Outstanding This element represents the portion of outstanding units, which include distribution equivalent rights that entitles the grantee to a cash payment equal to the cash distribution paid on an outstanding common unit. Wink to Webster Pipeline LLC (“W2W Pipeline”) Wink to Webster Pipeline LLC [Member] Wink to Webster Pipeline LLC [Member] Current Fiscal Year End Date Current Fiscal Year End Date Total finance lease liabilities Lease liabilities Finance Lease, Liability Finance lease right-of-use assets, accumulated depreciation Finance Lease, Right-of-Use Asset, Accumulated Amortization Class B Shares Shares Class B [Member] Represents the classification of shares representing limited partner interests in the company that are not held by the public. Class B shareholders have equal voting rights with Class A shareholders but are not entitled to receive distributions. Operating Segments Excluding Intersegment Elimination Operating Segments Excluding Intersegment Elimination [Member] Operating Segments Excluding Intersegment Elimination Intangible assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill (Gains)/losses on asset sales and asset impairments, net (Gains)/Losses On Asset Sales And Asset Impairments, Net [Member] (Gains)/Losses On Asset Sales And Asset Impairments, Net [Member] Investments in unconsolidated entities (Note 9) Capital Contributions to Equity Method Investees Cash outflow for capital contributions subsequent to the initial purchase of interest in equity method investments. Subsidiary, Sale of Stock [Line Items] Subsidiary, Sale of Stock [Line Items] Thereafter Finance Lease, Liability, to be Paid, after Year Five Class C Shares Shares Class C [Member] Class C shares represent a non-economic limited partner interest that provides the holder the right to vote in elections of eligible directors together with the holders of Class A and Class B shares. Cash Distribution Cash Distribution [Member] Cash paid for: Supplemental Cash Flow Information [Abstract] 6.70% senior notes due May 2036 Senior Notes Due In May2036 At6.70 Percent [Member] Represents the 6.70 percent senior notes, which are due in May 2036. Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Total Inventory, Current and Noncurrent This element represents the aggregate of current and non-current inventory, including linefill and base gas. Aggregate total estimated costs Loss Contingency, Estimate of Possible Loss Income/(loss) before tax after deducting net income and taxes attributable to noncontrolling interest Income (Loss) from Continuing Operations before Income Taxes Extraordinary Items but after Deducting Income and Taxes Attributable to Noncontrolling Interest This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments and deducting income and income taxes attributable to noncontrolling interests, but before income taxes and extraordinary items. Property and Equipment Property, Plant and Equipment [Line Items] Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Total Contractual Obligation, Fiscal Year Maturity Schedule [Abstract] Inventory [Domain] Inventory [Domain] Components of property and equipment, net Property, Plant and Equipment [Table Text Block] Other Commitments [Domain] Other Commitments [Domain] Derivative instruments Deferred Tax Liabilities, Derivatives Finite-lived intangible assets, cost Finite-Lived Intangible Assets, Gross Lessor, Lease, Description [Line Items] Lessor, Lease, Description [Line Items] Thereafter Leases, Future Minimum Payments, Due Thereafter Leases, Future Minimum Payments, Due Thereafter Currency Exchange Rate Risk Hedging: Foreign Currency Derivatives [Abstract] Accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Net gains/(losses) for the period included in earnings Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings Trade accounts receivable arising from revenues from contracts with customers Contract with Customer, Asset, after Allowance for Credit Loss, Current Long-term inventory costing adjustments Long-Term Inventory Costing Adjustments Includes the impact of changes (resulting from fluctuations in market prices) in the average cost of crude oil and NGL inventory that is comprised of minimum working inventory requirements in third-party assets and other working inventory that is needed for the entity’s commercial operations which is considered necessary to conduct the entity’s operations and which the entity intends to carry for the foreseeable future, as well as writedowns of such inventory that result from price declines. Total lease liabilities Leases, Liability Leases, Liability Related Party Transactions [Abstract] Related Party Transactions [Abstract] Finance lease right-of-use assets, net Finance Lease, Right-of-Use Asset, after Accumulated Amortization Hedging Relationship [Domain] Hedging Relationship [Domain] Partners' Capital Notes [Abstract] Partners' Capital Notes [Abstract] NGL Natural Gas Liquids [Member] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Senior notes, net PAA senior notes, net of unamortized discounts and debt issuance costs Senior Notes, Noncurrent Schedule of Finance Lease Maturity Lessee, Operating Lease, Liability, Maturity [Table Text Block] Net short position related to anticipated net sales of crude oil and NGL inventory Net Short Position Contracts Related To Anticipated Net Sales Of Inventory [Member] Represents the derivative instruments in a net short position related to anticipated net sales of crude oil and NGL inventory. Deferred tax rate adjustment Effective Income Tax Rate Reconciliation, Other Adjustments, Amount BASIC WEIGHTED AVERAGE CLASS A SHARES OUTSTANDING (in shares) Basic weighted average Class A shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Schedule of distributions Distributions Made to Limited Partner, by Distribution [Table Text Block] Ownership [Axis] Ownership [Axis] Construction in progress expenditures incurred but not yet paid Construction in Progress Expenditures Incurred but Not yet Paid Variable Interest Entities Consolidation, Variable Interest Entity, Policy [Policy Text Block] Cash Flow Hedging Cash Flow Hedging [Member] 3.85% senior notes due October 2023 Senior Notes Due In October2023 At3.85 Percent [Member] Represents the 3.85 percent senior notes, which are due October 2023. Loss Contingencies [Table] Loss Contingencies [Table] Plan Name [Domain] Plan Name [Domain] Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Distributions payable Dividends Payable Ownership interest in unconsolidated entity Equity Method Investment, Ownership Percentage Revenues and Accounts Receivable Revenue from Contract with Customer [Text Block] BridgeTex Pipeline Company, LLC (“BridgeTex”) BridgeTex Pipeline Company, LLC [Member] BridgeTex Pipeline Company, LLC [Member] Total lease right-of-use assets Leases, Right-Of-Use Asset Leases, Right-Of-Use Asset Non-cash change in lease liabilities arising from obtaining new right of use assets or modifications, operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Partner Type of Partners' Capital Account, Name [Domain] Partner Type of Partners' Capital Account, Name [Domain] Gain on revaluation of foreign currency transactions and monetary assets and liabilities Foreign Currency Transaction Gain (Loss), before Tax Cash paid for purchases of linefill and base gas Cash Paid Related to Purchases of Linefill and Base Gas The cash outflow associated with the purchase of linefill and base gas. Total income tax expense/(benefit) Income tax (expense)/benefit Income Tax Expense (Benefit) Inventory, Linefill and Base Gas and Long-term Inventory Inventory, Policy [Policy Text Block] Limited Partners' Capital Account by Class [Axis] Limited Partners' Capital Account by Class [Axis] Cash and cash equivalents and restricted cash, beginning of period Cash and cash equivalents and restricted cash, end of period Total cash and cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Property and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Aggregate maturities of long-term debt Schedule of Maturities of Long-term Debt [Table Text Block] Gain on sale of investment in unconsolidated entities Gain on sale of investment in unconsolidated entities Equity Method Investment, Realized Gain (Loss) on Disposal 2022 Contractual Obligation, to be Paid, Year Two NGL and other transactions NGL And Other Transactions [Member] NGL And Other Transactions [Member] Finance lease liabilities, current Finance Lease, Liability, Current Other (in shares) Partners' Capital, Units, Other Changes in the number of units outstanding included in the statement of changes in partners' capital which are not separately disclosed or provided for elsewhere in the taxonomy. Number of years by which maturity date of credit facility may be extended Line of Credit Facility Period for Which Term of Credit Facility May Be Extended Represents the period for which the credit facility may be extended by the entity, pursuant to the terms of the credit agreement. Local Phone Number Local Phone Number Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative and financial assets and liabilities subject to offsetting Offsetting Assets, Liabilities [Line Items] Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption [Domain] Lease liabilities Deferred Tax Assets, Leasing Arrangements Amount of deferred tax asset attributable to taxable temporary differences from leasing arrangements. Agreement to store at facilities owned by equity method investee Agreements to store at facilities or transport on pipelines owned by equity method investees Agreements To Utilize Assets Of Equity Method Investee [Member] Agreements to store crude oil at facilities or transport crude oil on pipelines owned by equity method investees. Cash and Cash Equivalents and Restricted Cash Cash and Cash Equivalents, at Carrying Value [Abstract] Derivatives and Risk Management Activities Derivative [Line Items] Long-term debt, before deducting unamortized discounts and debt issuance costs Long-term Debt, Gross Contract liability, deferred revenue Beginning balance Ending balance Advance cash payment, pipeline capacity agreements Contract with Customer, Liability Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Trade accounts receivable and other receivables, net Trade Accounts Receivable And Other Receivables Net [Member] Primary financial statement caption encompassing trade accounts receivable and other receivables. Recognized losses related to sales of assets Loss On Disposition Of Assets Loss On Disposition Of Assets Maximum aggregate borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Schedule of Assets and Liabilities, Lessee Assets and Liabilities, Lessee [Table Text Block] Assets and Liabilities, Lessee Segment Adjusted EBITDA Segment Adjusted EBITDA Revenues and equity earnings in unconsolidated entities less (a) purchases and related costs, (b) field operating costs and (c) segment general and administrative expenses, plus the entity’s proportionate share of the depreciation and amortization expense and gains and losses on significant asset sales of unconsolidated entities, and further adjusted for certain selected items including (i) gains or losses on derivative on derivative instruments that are related to underlying activities in another period (or the reversal of such adjustments from a prior period), gains and losses on derivatives that are related to investing activities (such as the purchase of linefill) and inventory valuation adjustments, as applicable, (ii) long-term inventory costing adjustments, (iii) charges for obligations that are expected to be settled with the issuance of equity instruments, (iv) amounts related to deficiencies associated with minimum volume commitments, net of applicable amounts subsequently recognized into revenue and (v) other items that the Chief Operating Decision Maker believes are integral to understand the entity’s core segment operating performance. Revisions in estimated cash flows Asset Retirement Obligation, Revision of Estimate Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] Short-term Debt, Type [Domain] Short-term Debt, Type [Domain] Number of cases filed during the period Loss Contingency, New Claims Filed, Number Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Schedule of Lessor Future Revenues Maturity Lessor, Operating Lease, Payment to be Received, Fiscal Year Maturity [Table Text Block] LONG-TERM LIABILITIES Liabilities, Noncurrent [Abstract] Long-term debt: Long-term Debt, Unclassified [Abstract] Total Other Commitment Property and Equipment Property, Plant and Equipment Disclosure [Text Block] Lessee, leases, renewal term Lessee, Leases, Renewal Term Lessee, Leases, Renewal Term Lessee, leases, term of contract Lessee, Leases, Term of Contract Lessee, Leases, Term of Contract Office property and equipment Office Equipment [Member] Net Income/(Loss) Per Class A Share Earnings Per Share [Text Block] Trucking Trucking [Member] Trucking [Member] Variation margin posted/(returned) Variation Margin Posted (Returned) Cash posted by (returned to) the reporting entity to (from) a broker or counterparty to comply with initial margin requirements. CURRENT LIABILITIES Liabilities, Current [Abstract] Federal statutory income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent CASH FLOWS FROM FINANCING ACTIVITIES Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Accretion expense Asset Retirement Obligation, Accretion Expense AAP Units AAP Units [Member] AAP Units Income taxes attributable to noncontrolling interests Income Taxes Attributable to Noncontrolling Interest Represents the amount of taxes on income attributable to noncontrolling interest. Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Measurement Input, Discount Rate Measurement Input, Discount Rate [Member] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract]