Goodwill and Intangible Assets Disclosure [Abstract] Goodwill Goodwill Disclosure [Text Block] Inventory, Linefill and Base Gas and Long-term Inventory Inventory, Current [Table] Inventory, Current [Table] Inventory [Axis] Inventory [Axis] Inventory [Domain] Inventory [Domain] Crude oil Crude Oil [Member] NGL Natural Gas Liquids [Member] Natural gas Natural Gas [Member] Other Other Inventory [Member] Category of inventory not separately disclosed. Inventory disclosures Inventory [Line Items] Inventory by category Inventory Disclosure [Abstract] Inventory, Volumes (in barrels or in Mcf) Inventory, Volumes Current The volume of current inventory as of the balance sheet date. 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. Long-term inventory, Volumes (in barrels or in Mcf) Inventory, Volumes, Noncurrent The volume of noncurrent inventory as of the balance sheet date. Inventory Inventory, Net Linefill and base gas Linefill and Base Gas Crude oil, refined products, and NGL linefill in pipelines and base gas in natural gas storage facilities that are owned by the entity. The linefill and base gas are intended for long-term use. Long-term inventory Inventory, Noncurrent Total Inventory, Current and Noncurrent This element represents the aggregate of current and non-current inventory, including linefill and base gas. Inventory, Price/Unit of measure Inventory, Weighted Average Price Per Unit, Current The weighted-average price per unit of current inventory. Linefill and base gas, Price/Unit of measure Inventory, Weighted Average Price Per Unit Linefill and Base Gas The weighted-average price per unit of linefill and base gas inventory. Long-term inventory, Price/Unit of measure Inventory, Weighted Average Price Per Unit Noncurrent The weighted-average price per unit of noncurrent inventory. Related Party Transactions [Abstract] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Oxy Oxy [Member] Occidental Petroleum Corporation ("Oxy") or its subsidiaries. Oxy holds a limited partner interest in the reporting entity's general partner. Related Party Transactions Related Party Transaction [Line Items] Schedule of related party transactions Schedule of Related Party Transactions [Table Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative [Table] Derivative [Table] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Preferred Distribution Rate Reset Option Embedded Derivative Financial Instruments [Member] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] PAA Plains All American Pipeline L P [Member] Represents the information pertaining to Plains All American Pipeline, L.P. ("PAA"). Limited Partners' Capital Account by Class [Axis] Limited Partners' Capital Account by Class [Axis] Limited Partners' Capital Account, Class [Domain] Limited Partners' Capital Account, Class [Domain] Series A Preferred Units Seriesa Preferred Units [Member] Series A Preferred Units representing limited partner interests in the entity that rank senior to all classes or series of equity securities of the entity with respect to distribution rights and rights upon liquidation and are convertible into common units by the holder or the entity under certain conditions. Derivatives and Risk Management Activities Derivative [Line Items] Embedded Derivatives Embedded Derivative, Fair Value of Embedded Derivative, Net [Abstract] Fair value of derivative liability Derivative, Fair Value, Net Loss recognized due to changes in fair value Embedded Derivative, Gain (Loss) on Embedded Derivative, Net Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Derivatives in Hedging Relationships Designated as Hedging Instrument [Member] Derivatives Not Designated as a Hedge Not Designated as Hedging Instrument [Member] Commodity Derivatives Commodity Contract [Member] Interest Rate Derivatives Interest Rate Contract [Member] Foreign Currency Derivatives Foreign Exchange Contract [Member] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [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. Transportation segment revenues Pipeline Tariff Activities Trucking And Related Revenues [Member] Revenue from the transportation of crude oil and NGL on pipelines, gathering systems, trucks and barges during the period. Field operating costs Field Operating Costs [Member] Costs related to site and field operations during the period. Interest expense, net Interest Expense [Member] Other income/(expense), net Other Nonoperating Income (Expense) [Member] Impact of derivative activities recognized in earnings Derivative Instruments, Gain (Loss) [Line Items] Total gain/(loss) on derivatives recognized in net income Derivative, Gain (Loss) on Derivative, Net Forward exchange contracts that exchange CAD For USD maturing 2017 Foreign Exchange Forward Contracts That Exchange Canadian Dollars For US Dollars At Average Rate Disclosed Maturing in 2017 [Member] Foreign Exchange Forward Contracts That Exchange Canadian Dollars For US Dollars At Average Rate Disclosed Maturing in 2017 [Member] Forward exchange contracts that exchange USD for CAD maturing in 2017 Foreign Exchange Forward Contracts That Exchange U S Dollars For Canadian Dollars At Average Rate Disclosed Maturing In2017 [Member] Represents the foreign exchange forward contracts that exchange USD for CAD at the average exchange rate disclosed, maturing in 2017. Currency Exchange Rate Risk Hedging: Foreign Currency Derivatives [Abstract] Notional amount of derivatives Derivative, Notional Amount Average exchange rate (cad per usd) Derivative, Average Forward Exchange Rate Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Net deferred gain/(loss) recognized in AOCI on derivatives Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net Number of derivatives held with credit risk related contingent features Number of Derivatives Held with Credit Risk Related Contingent Features Represents the number of outstanding derivatives containing credit risk-related contingent features held by the entity at the reporting date. Statement of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Reconciliation of net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Equity-indexed compensation expense Allocated Share-based Compensation Expense Deferred income tax expense Deferred Income Tax Expense (Benefit) (Gain)/loss on foreign currency revaluation Foreign Currency Transaction Gain (Loss), before Tax Equity earnings in unconsolidated entities Income (Loss) from Equity Method Investments Distributions from unconsolidated entities Proceeds from Equity Method Investment, Dividends or Distributions Other Other Noncash Income (Expense) Changes in assets and liabilities, net of acquisitions Increase (Decrease) in Operating Capital Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations CASH FLOWS FROM INVESTING ACTIVITIES Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Cash paid in connection with acquisitions, net of cash acquired Payments to Acquire Businesses and Interest in Affiliates Investments in unconsolidated entities Capital Contributions to Equity Method Investees Cash outflow for capital contributions 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. Additions to property, equipment and other Payments to Acquire Property, Plant, and Equipment Proceeds from sales of assets Proceeds from Sale of Productive Assets Other investing activities Payments for (Proceeds from) Other Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations CASH FLOWS FROM FINANCING ACTIVITIES Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Net borrowings/(repayments) under PAA commercial paper program (Note 8) Proceeds from (Repayments of) Commercial Paper Net repayments under PAA senior secured hedged inventory facility (Note 8) Net Proceeds from (Repayments of) Hedged Inventory Facility The net cash inflow (outflow) due to borrowings (repayments) on the hedged inventory facility. Net borrowings under AAP senior secured revolving credit facility Proceeds from (Repayments of) Secured Debt Repayments of PAA senior notes (Note 8) Repayments of Senior Debt Net proceeds from the sale of Class A shares (Note 9) Proceeds from Issuance or Sale of Equity Net proceeds from the sale of Series A preferred units by a subsidiary Proceeds from Subsidiary Issuance of Preferred Limited Partners Units The cash inflow from preferred limited partners units issued by a subsidiary during the period. Net proceeds from the sale of common units by a subsidiary (Note 9) Proceeds from Subsidiary Issuance of Common Limited Partners Units The cash inflow from common limited partners units issued by a subsidiary during the period. Distributions paid to Class A shareholders (Note 9) Distribution Made to Limited Partner, Cash Distributions Paid Distributions paid to noncontrolling interests (Note 9) Payments of Ordinary Dividends, Noncontrolling Interest Other financing activities Proceeds from (Payments for) Other Financing Activities Net cash provided by/(used in) financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations Effect of translation adjustment on cash Effect of Exchange Rate on Cash and Cash Equivalents, Continuing Operations Net increase/(decrease) in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents, beginning of period Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents, end of period Cash paid for: Supplemental Cash Flow Information [Abstract] Interest, net of amounts capitalized Interest Paid, Net Income taxes, net of amounts refunded Income Taxes Paid, Net Commitments and Contingencies Disclosure [Abstract] Loss Contingencies [Table] Loss Contingencies [Table] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] 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. In the Matter of Bakersfield Crude Terminal LLC et al Bakersfield Crude Terminal L L C [Member] Represents information pertaining to the Finding and Notice of Violation issued to Bakersfield Crude Terminal LLC by the United States Environmental Protection Agency for alleged violations of the Clean Air Act. Mesa To Basin Pipeline Mesa To Basin Pipeline Release [Member] Represents information pertaining to the crude oil release from the Mesa to Basin Pipeline in Midland, Texas. Litigation Case [Axis] Litigation Case [Axis] Litigation Case [Domain] Litigation Case [Domain] 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. Class Action Lawsuits Class Action Lawsuits [Member] Represents information related to class action lawsuits filed against the company. Securities Law Class Action Lawsuits Securities Law Class Action Lawsuits [Member] Represents information related to securities law class action lawsuits filed against the company. Unitholder Derivative Lawsuits Unitholder Derivative Lawsuits [Member] Represents information related to unitholder derivative lawsuits filed against the company. Production of Books And Records Lawsuits Compliance with Regulations and Other Matters [Member] Compliance with Regulations and Other Matters [Member] Regulatory Agency [Axis] Regulatory Agency [Axis] Regulatory Agency [Domain] Regulatory Agency [Domain] PHMSA Pipeline And Hazardous Materials Safety Administration [Member] Represents information related to the United States Department of Transportation's Pipeline and Hazardous Materials Safety Administration ("PHMSA"). Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Trade accounts receivable and other receivables, net Trade Accounts Receivable And Other Receivables [Member] Primary financial statement caption encompassing trade accounts receivable and other receivables. Other long-term assets, net Other Noncurrent Assets [Member] Accounts payable and accrued liabilities Accounts Payable and Accrued Liabilities [Member] Legal, Environmental or Regulatory Matters Loss Contingencies [Line Items] Estimated undiscounted reserve for environmental liabilities Accrual for Environmental Loss Contingencies, Gross Estimated undiscounted reserve for environmental liabilities, short-term Accrued Environmental Loss Contingencies, Current Estimated undiscounted reserve for environmental liabilities, long-term Accrued Environmental Loss Contingencies, Noncurrent Amounts probable of recovery under insurance and from third parties under indemnification agreements Recorded Third-Party Environmental Recoveries Receivable Estimated size of release (in bbl) Estimated Size of Release Represents the estimated size of the pipeline release. 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 Number of employees charged Number of Employees Charged in Indictment Number of the entity's employees charged pursuant to an indictment. Total counts included in the indictment Indictment, Total Number of Counts Total number of counts included in the indictment. Number of misdemeanor charges relating to wildlife allegedly taken Indictment, Number of Misdemeanor Charges Relating to Wildlife Number of misdemeanor charges included in the indictment, related to wildlife allegedly taken. Number of counts relating to the release of crude oil or reporting of the release Indictment, Number of Counts Related to the Release of Crude Oil or Reporting of the Release Number of counts included in the indictment, related to the release of crude oil or reporting of the release, excluding charges relating to wildlife allegedly taken. Number of felony charges Indictment, Number of Felony Charges Number of felony charges included in the indictment, related to the release of crude oil or reporting of the release. Number of misdemeanor charges relating to the release of crude oil or reporting of the release Indictment, Number of Misdemeanor Charges Related to the Release of Crude Oil or Reporting of the Release Number of misdemeanor charges included in the indictment, related to the release of crude oil or reporting of the release, excluding charges relating to wildlife allegedly taken. Number of cases filed during the period Loss Contingency, New Claims Filed, Number Number of cases consolidated into a single proceeding Loss Contingency Number Of Cases Consolidated Into Single Proceeding Represents the total number of initially separate claims consolidated into a single proceeding. Number of remaining lawsuits Loss Contingency, Claims Not Consolidated, Number Loss Contingency, Claims Not Consolidated, Number Aggregate total estimated costs Loss Contingency, Estimate of Possible Loss Recoveries from insurance carriers Loss Contingency, Receivable, Proceeds 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. Number of alleged rule violations Number of Alleged Rule Violations Represents the number of separate rule violations of the Clean Air Act alleged by the United States Environmental Protection Agency. Fines or penalties assessed Loss Contingency Penalty or Fine Assessed Represents penalty or fine assessed on the entity in connection with an environmental matter. Number of occasions of alleged failure to carry out damage prevention program and other procedures Number of Occasions Failed to Carry Out Program and Procedures The number of occasions on which the regulatory agency maintains that the entity failed to carry out a written damage prevention program and other procedures, with such failures resulting in a pipeline release. Schedule of goodwill by segment and changes during the period Schedule of Goodwill [Table Text Block] Business Combinations [Abstract] Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Advantage Joint Venture Advantage Joint Venture [Member] ADvantage Joint Venture [Member] Common Units Common Units [Member] Common units representing limited partner interests in the entity. Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Domain] Investment, Name [Domain] Advantage Advantage Pipeline, LLC [Member] Advantage Pipeline, LLC [Member] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Cash consideration Payments to Acquire Equity Method Investments Ownership percentage Equity Method Investment, Ownership Percentage Equity method investment Equity Method Investments Contribution of common units (units) Stock Issued During Period, Shares, Acquisitions Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Statement [Table] Statement [Table] Partner Capital Components [Axis] Partner Capital Components [Axis] Partner Capital Components [Domain] Partner Capital Components [Domain] Derivative Instruments Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member] Translation Adjustments Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member] Other AOCI, Other, Including Portion Attributable to Noncontrolling Interest [Member] AOCI, Other, Including Portion Attributable to Noncontrolling Interest [Member] Statement Statement [Line Items] Changes in Accumulated Other Comprehensive Income/(Loss) AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] Balance at beginning of period Accumulated Other Comprehensive Income (Loss), Net of Tax Reclassification adjustments Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax Deferred gain (loss) on cash flow hedges Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Total period activity Other Comprehensive Income (Loss), Net of Tax Balance at end of period Statement of Partners' Capital [Abstract] Partner Type [Axis] Partner Type [Axis] Partner Type of Partners' Capital Account, Name [Domain] Partner Type of Partners' Capital Account, Name [Domain] Limited Partners Limited Partner [Member] Class A Shares Shares Class [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. Noncontrolling Interests Noncontrolling Interest [Member] Increase (Decrease) in Partners' Capital Increase (Decrease) in Partners' Capital [Roll Forward] Balance, beginning of period Partners' Capital, Including Portion Attributable to Noncontrolling Interest Cash distributions to partners Partners' Capital Account, Distributions Deferred tax asset (Note 9) 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. Sales of Class A shares (Note 9) Partners' Capital Account, Sale of Units Partners Capital Account Public Sale Of Units By Subsidiary Partners Capital Account Public Sale Of Units By Subsidiary Represents the impact on partners' capital of the sale of units by a subsidiary to the public. Change in ownership interest in connection with Exchange Right exercises Partners Capital Account Change in Ownership Interest Represents the increase (decrease) in partners' capital accounts as a result of the change in ownership interest from noncontrolling interests to the parent in connection with Exchange Right exercises. Sale of Series A preferred units by a subsidiary Noncontrolling Interest, Increase from Subsidiary Preferred Unit Issuance Amount of increase in noncontrolling interest from subsidiary issuance of preferred units to noncontrolling interest holders. Other comprehensive income Other Partners' Capital, Other Balance, end of period Partners' Capital Notes [Abstract] 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] Sale of Stock [Axis] Sale of Stock [Axis] Sale of Stock [Domain] Sale of Stock [Domain] Continuous Offering Program Continuous Offering Program [Member] Represents the continuous equity offering program of the entity under which common units are sold through equity distribution agreements, of which there may be one or more in effect during the reporting period. Underwritten Offering Underwritten Offering [Member] Represents information pertaining to an underwritten public offering of common units. Subsidiary, Sale of Stock [Line Items] Subsidiary, Sale of Stock [Line Items] Sales of Class A shares (shares) Partners' Capital Account, Units, Sale of Units Sale of Class A shares, net proceeds Commissions paid to sales agents Payments of Stock Issuance Costs Segment Reporting [Abstract] Segment financial data Schedule of Segment Reporting Information, by Segment [Table Text Block] Reconciliation of segment adjusted EBITDA to net income attributable to PAGP Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Statement of Comprehensive Income [Abstract] Other comprehensive income Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive income attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive income attributable to PAGP Comprehensive Income (Loss), Net of Tax, Attributable to Parent Statement of Financial Position [Abstract] Schedule of Limited Partners' Capital Account by Class [Table] Schedule of Limited Partners' Capital Account by Class [Table] Shares outstanding Limited Partners' Capital Account [Line Items] Shares outstanding (shares) Limited Partners' Capital Account, Units Outstanding Receivables [Abstract] Accounts Receivable, Net Receivables, Net, Current [Abstract] Advance cash payments received from third parties to mitigate credit risk Customer Advances, Current Standby letters of credit Standby Letters of Credit Received Represents a guarantee of payment issued by a financial institution that is used to support obligations due from third parties, a portion of which applies to future business. 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. Allowance for doubtful accounts receivable Allowance for Doubtful Accounts Receivable, Current Interest Rate Swaps Interest Rate Swap [Member] Schedule of terms of outstanding interest rate derivatives Schedule of Derivative Instruments [Table Text Block] Open forward exchange contracts Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block] Impact of derivative activities recognized in earnings Derivative Instruments, Gain (Loss) [Table Text Block] Summary of derivative assets and liabilities on Condensed Consolidated Balance Sheets on a gross basis Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Schedule of broker receivables and payables Schedule of Due to (from) Broker-Dealers and Clearing Organizations [Table Text Block] Schedule of derivative financial assets that are subject to offsetting, including enforceable master netting arrangements Offsetting Assets [Table Text Block] Schedule of derivative financial liabilities that are subject to offsetting, including enforceable master netting arrangements Offsetting Liabilities [Table Text Block] Net deferred gain/(loss) recognized in AOCI for derivatives Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block] 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] 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] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Acreage dedication contracts Acreage Dedication Contracts [Member] Acreage Dedication Contracts [Member] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] ACC Acquisition Alpha Holding Company, LLC [Member] Alpha Holding Company, LLC [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Number of acreage dedication contracts Business Combination, Number of Finite Lived Assets Acquired Business Combination, Number of Finite Lived Assets Acquired Finite lived intangible assets, useful life Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Amortization of finite lived intangible assets Amortization of Intangible Assets Remainder of 2017 Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2018 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2019 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Five Partners' Capital and Distributions [Table] Partners' Capital and Distributions [Table] Disclosure reflecting information pertaining to Partners' Capital and related distributions. Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Public Public Unit Holders [Member] Public Unit Holders [Member] AAP Plains Aap L P [Member] Represents information pertaining to Plains, AAP L.P (AAP). Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Forecast Scenario, Forecast [Member] Distribution Type [Axis] Distribution Type [Axis] Distribution Type [Domain] Distribution Type [Domain] Cash Distributions Cash Distribution [Member] In-Kind Distributions Unit Distribution [Member] AAP SLC Pipeline LLC S L C Pipeline L L C [Member] This element represents the information pertaining to SLC Pipeline LLC. Partners Capital and Distributions Partners Capital and Distribution [Line Items] No definition available. Distributions to limited partners Limited Partners' Capital Account, Distribution Amount Distributions to noncontrolling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Distributions to PAGP Cash Dividends Paid to Parent Company by Consolidated Subsidiaries Total distributions paid Distributions per common unit, paid Distribution Made to Limited Partner, Distributions Paid, Per Unit Distribution of units in lieu of cash (units) Distribution Made to Limited Partner, Unit Distribution Propane marine terminal Propane Marine Terminal [Member] Propane Marine Terminal [Member] Cash paid in connection with acquisitions Length of gathering and transmission lines (in miles) Business Combination, Property And Plant Acquired, Length Of Gathering And Transmission Lines Business Combination, Property And Plant Acquired, Length Of Gathering And Transmission Lines Number of market interconnects Business Combination, Property And Plant Acquired, Number Of Market Interconnects Business Combination, Property And Plant Acquired, Number Of Market Interconnects Additional volume enhancements to gathering system (in bbl per day) Business Combination, Property And Plant Acquired, Volume Per Duration Of Additional Enhancements Business Combination, Property And Plant Acquired, Volume Per Duration Of Additional Enhancements Area of acreage dedications (in acres) Business Combination, Property And Plant Acquired, Area Of Oil And Gas Contract Business Combination, Property And Plant Acquired, Area Of Oil And Gas Contract Acquisition related costs Business Combination, Acquisition Related Costs Related Party Transaction [Axis] Related Party Transaction [Axis] Related Party Transaction [Domain] Related Party Transaction [Domain] Omnibus Agreement Omnibus Agreement [Member] An agreement entered into, in connection with the Simplification Transactions, by and among Plains All American Pipeline, L.P., PAA GP Holdings LLC, Plains GP Holdings, L.P., Plains All American GP LLC, Plains AAP, L.P. and PAA GP LLC that provides for the following: (i) that Plains All American Pipeline, L.P. will pay all direct or indirect expenses of PAA GP Holdings LLC , Plains GP Holdings, L.P., Plains All American GP LLC, Plains AAP, L.P. and PAA GP LLC, (ii) the ability of Plains GP Holdings, L.P. to issue additional Class A shares and use the net proceeds therefrom to purchase a like number of Class A units from Plains AAP, L.P, and the corresponding ability of Plains AAP, L.P. to use the net proceeds therefrom to purchase a like number of common units from Plains All American Pipeline, L.P. and (iii) the ability of Plains GP Holdngs, L.P. to lend proceeds of any future indebtedness incurred by it to Plains AAP, L.P., and Plains AAP, L.P.’s corresponding ability to lend such proceeds to Plains All American Pipeline, L.P., in each case on substantially the same terms as incurred by Plains GP Holdings, L.P. Noncontrolling interests in subsidiaries (percent) Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Sale of common units (units) Sale of common units, net proceeds Schedule of activity for Class A shares, Class B shares and Class C shares Schedule of Common Stock Outstanding Roll Forward [Table Text Block] Schedule of distributions Distributions Made to Limited Partner, by Distribution [Table Text Block] Schedule of sale of Class A shares Schedule of Sale of Stock by Subsidiary or Equity Method Investee Disclosure [Table Text Block] 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. 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. Activity for Class A shares and Class B shares Balance, beginning of period (shares) Conversion of AAP Management Units (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. Exchange Right exercises (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. Redemption Right exercises (shares) Limited Partners Capital Account, Shares Issued (Redeemed) in Redemption Right Exercises Limited Partners Capital Account, Shares Issued (Redeemed) in Redemption Right Exercises Sales of common units by a subsidiary (shares) Partners' Capital Account, Units, Increase from Subsidiary Common Unit Issuance Partners' Capital Account, Units, Increase from Subsidiary Common Unit Issuance Issuance of Series A preferred units by a subsidiary (shares) Partners' Capital Account, Units, Increase from Subsidiary Preferred Unit Issuance Partners' Capital Account, Units, Increase from Subsidiary Preferred Unit Issuance Other (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. Issuance of Class A shares under LTIP (shares) Partners' Capital Account, Units, Unit-based Compensation Balance, end of period (shares) Earnings Per Share [Abstract] Net Income Per Class A Share Earnings Per Share [Text Block] Document and Entity Information Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Document Type Document Type Document Period End Date Document Period End Date Amendment Flag Amendment Flag Current Fiscal Year End Date Current Fiscal Year End Date Entity Current Reporting Status Entity Current Reporting Status Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding (shares) Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Debt Disclosure [Abstract] 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. Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] 6.13 percent senior notes due January 2017 Senior Notes Due In January2017 At6.13 Percent [Member] Represents the 6.13 percent senior notes, which are due in January 2017. Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] 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. PAA senior notes Senior Notes [Member] Short-term Debt, Type [Axis] Short-term Debt, Type [Axis] Short-term Debt, Type [Domain] Short-term Debt, Type [Domain] Letters of credit Standby Letters of Credit [Member] Debt Debt Instrument [Line Items] Total borrowings Proceeds from Issuance of Debt Total repayments Repayments of Debt Outstanding letters of credit Letters of Credit Outstanding, Amount Repayments of PAA senior notes Debt instrument, interest rate Debt Instrument, Interest Rate, Stated Percentage Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Property and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Goodwill Goodwill Other (including $4 million of cash acquired) Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other, Net Amount of other net assets (liabilities) acquired (assumed) at the acquisition date. Total Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net Property and equipment, useful life Property, Plant and Equipment, Useful Life Cash acquired Cash Acquired from Acquisition Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table] Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Unallocated Segment Reconciling Items [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] 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 of unconsolidated entities, and further adjusted for certain selected items including (i) the mark-to- market of 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. Adjustments: Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract] Depreciation and amortization of unconsolidated entities Depreciation And Amortization Of Unconsolidated Entities The reporting entity’s proportionate share of depreciation and amortization expense of unconsolidated entities. 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. 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. 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. 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. 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. Significant acquisition-related expenses Unallocated general and administrative expenses General and Administrative Expense Depreciation and amortization Interest expense, net Interest Expense Other income/(expense), net Other Nonoperating Income (Expense) INCOME BEFORE TAX Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax expense Income Tax Expense (Benefit) NET INCOME Net income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest NET INCOME ATTRIBUTABLE TO PAGP Net Income (Loss) Attributable to Parent Income Statement [Abstract] Interest expense, capitalized interest Interest Costs Capitalized 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. 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. Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Recurring Fair Value Measures Fair Value, Measurements, Recurring [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Recurring Fair Value Measurements Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Net derivative asset/(liability) Rollforward of Level 3 Net Asset/(Liability) Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Beginning Balance Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs Net 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 Settlements Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements 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. Ending Balance 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) Measured on Recurring Basis, Change in Unrealized Gain (Loss) ASSETS Assets [Abstract] CURRENT ASSETS Assets, Current [Abstract] Cash and cash equivalents Trade accounts receivable and other receivables, net Receivables, Net, Current Other current assets Other Assets, Current Total current assets Assets, Current PROPERTY AND EQUIPMENT Property, Plant and Equipment, Gross Accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property and equipment, net Property, Plant and Equipment, Net OTHER ASSETS Other Assets, Noncurrent [Abstract] Investments in unconsolidated entities Deferred tax asset Deferred Income Tax Assets, Net Other long-term assets, net Other Assets, Noncurrent Total assets Assets LIABILITIES AND PARTNERS’ CAPITAL Liabilities and Equity [Abstract] CURRENT LIABILITIES Liabilities, Current [Abstract] Accounts payable and accrued liabilities Accounts Payable and Accrued Liabilities, Current Short-term debt Debt, Current Other current liabilities Other Liabilities, Current Total current liabilities Liabilities, Current LONG-TERM LIABILITIES Liabilities, Noncurrent [Abstract] Senior notes, net of unamortized discounts and debt issuance costs Senior Notes, Noncurrent Other long-term debt Other Long-term Debt, Noncurrent Other long-term liabilities and deferred credits Liabilities, Other than Long-term Debt, Noncurrent Total long-term liabilities Liabilities, Noncurrent COMMITMENTS AND CONTINGENCIES (NOTE 12) Commitments and Contingencies PARTNERS’ CAPITAL Partners' Capital, Including Portion Attributable to Noncontrolling Interest [Abstract] Class A Shareholders (151,779,960 and 101,206,526 shares outstanding, respectively) Limited Partners' Capital Account Noncontrolling interests Partners' Capital Attributable to Noncontrolling Interest Total partners’ capital Total liabilities and partners’ capital Liabilities and Equity 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. 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. Net broker receivable/(payable) Derivative Liability, Collateral, Right to Reclaim Cash, Offset Schedule of Calculation of Basic and Diluted Net Income Per Class A Share [Table] Schedule of Calculation of Basic and Diluted Net Income Per Class A Share [Table] Schedule reflecting the calculation of basic and diluted net income per share. Net Income Per Class A Share Basic and Diluted Net Income Per Class A Share [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. Dilutive LTIP awards (shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Basic Net Income per Class A Share Earnings Per Share, Basic [Abstract] Net income attributable to PAGP Basic weighted average Class A shares outstanding (shares) Weighted Average Number of Shares Outstanding, Basic Basic net income per Class A share (usd per share) Earnings Per Share, Basic Diluted Net Income per Class A Share Earnings Per Share, Diluted [Abstract] Incremental net income 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 Net income attributable to PAGP including incremental net income from assumed exchange of AAP units and AAP Management Units Net Income (Loss) Attributable to Parent, Diluted Dilutive shares resulting from assumed exchange of AAP units and AAP Management Units (shares) Incremental Common Shares Attributable to Dilutive Effect of Contingently Issuable Shares Diluted weighted average Class A shares outstanding (shares) Weighted Average Number of Shares Outstanding, Diluted Diluted net income per Class A share (usd per share) Earnings Per Share, Diluted Debt Debt Disclosure [Text Block] Calculation of basic and diluted net income per Class A share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] 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. 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. Crude oil grade basis position Crude Oil Grade Basis Position [Member] Represents the derivative instruments that hedge crude oil purchases based on grade basis differentials. Net short position related to anticipated sales of natural gas inventory Net Short Position Related To Anticipated Sales Of Natural Gas Inventory [Member] Net short position related to anticipated sales of natural gas inventory. 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. PLA oil long call option position Pipeline Loss Allowance Oil Long Call Option [Member] Represents the derivative instruments in a long call option position related to pipeline loss allowance for crude oil. 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. 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. 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. Short 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. 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. Commodity Price Risk Hedging: Price Risk Derivatives [Abstract] Derivative position notional amount (in barrels or Mcf) Derivative, Nonmonetary Notional Amount, Volume Derivative position notional amount (in megawatt hours) Derivative, Nonmonetary Notional Amount, Energy Measure Acquisitions and Dispositions Mergers, Acquisitions and Dispositions Disclosures [Text Block] Related Party Transactions Related Party Transactions Disclosure [Text Block] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Operating Segments Operating Segments [Member] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] 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. 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. 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. Goodwill disclosures Goodwill [Line Items] Changes in goodwill Goodwill [Roll Forward] Beginning Balance Acquisitions Goodwill, Acquired During Period Foreign currency translation adjustments Goodwill, Foreign Currency Translation Gain (Loss) Dispositions and reclassifications to assets held for sale Goodwill, Written off Related to Sale of Business Unit Ending Balance Partners' Capital and Distributions Partners' Capital Notes Disclosure [Text Block] Schedule of debt Schedule of Debt [Table Text Block] 8 forward starting interest rate swaps (30-year), 3.14% Eight Forward Starting Thirty Year Interest Rate Swaps3.14 Percent [Member] Eight forward starting 30-year interest rate swaps to hedge the underlying benchmark interest rate related to anticipated interest payments, with an average fixed rate of 3.14 percent. 8 forward starting interest rate swaps (30-year), 3.20% Eight Forward Starting Thirty Year Interest Rate Swaps3.20 Percent [Member] Eight forward starting 30-year interest rate swaps to hedge the underlying benchmark interest rate related to anticipated interest payments, with an average fixed rate of 3.20 percent. 8 forward starting interest rate swaps (30-year), 2.83% Eight Forward Starting Thirty Year Interest Rate Swaps2.83 Percent [Member] Eight forward starting 30-year interest rate swaps to hedge the underlying benchmark interest rate related to anticipated interest payments, with an average fixed rate of 2.83 percent. Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Cash flow hedge Cash Flow Hedging [Member] Interest Rate Risk Hedging Interest Rate Derivatives [Abstract] Number of interest rate derivative contracts Number of Interest Rate Derivatives Held Term of derivative contract Derivative, Term of Contract Average rate locked (percent) Derivative, Average Fixed Interest Rate Distributions Distributions Made to Members or Limited Partners [Abstract] Distributions to Class A Shareholders Distribution per Class A share, paid (usd per share) Accounting Policies [Abstract] Recent Accounting Pronouncements New Accounting Pronouncements and Changes in Accounting Principles [Text Block] REVENUES Revenues [Abstract] Supply and Logistics segment revenues Sales and Related Revenues Revenue from the sale of crude oil, NGL and natural gas during the period. Transportation segment revenues Pipeline Tariff Activities Trucking and Related Revenues Revenue from the transportation of crude oil and NGL on pipelines, gathering systems, trucks and barges during the period. Facilities segment revenues Storage Terminalling Processing and Related Revenues Revenue from the storage, terminalling and throughput services for crude oil, refined products, NGL and natural gas, as well as NGL fractionation and isomerization services and natural gas and condensate processing services during the period. Total revenues Revenues COSTS AND EXPENSES Costs and Expenses [Abstract] Purchases and related costs Cost of Goods and Services Sold Field operating costs Operating Costs and Expenses General and administrative expenses Total costs and expenses Costs and Expenses OPERATING INCOME Operating Income (Loss) OTHER INCOME/(EXPENSE) Nonoperating Income (Expense) [Abstract] Equity earnings in unconsolidated entities Interest expense (net of capitalized interest of $6 and $13, respectively) Current income tax expense Current Income Tax Expense (Benefit) Deferred income tax expense BASIC AND DILUTED NET INCOME PER CLASS A SHARE Earnings Per Share, Basic and Diluted [Abstract] BASIC NET INCOME PER CLASS A SHARE (usd per share) DILUTED NET INCOME PER CLASS A SHARE (usd per share) BASIC WEIGHTED AVERAGE CLASS A SHARES OUTSTANDING (shares) DILUTED WEIGHTED AVERAGE CLASS A SHARES OUTSTANDING (shares) Accounts Receivable, Net Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Limited partner interest Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest Revenues Revenue from Related Parties Purchases and related costs Related Party Transaction, Purchases from Related Party Trade accounts receivable and other receivables Due from Related Parties, Current Accounts payable Due to Related Parties, Current Operating Segments Segment Reporting Disclosure [Text Block] Derivatives and Risk Management Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Schedule of assets acquired and liabilities assumed Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Schedule of finite lived intangible assets amortization expense Finite-lived Intangible Assets Amortization Expense [Table Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization and Basis of Consolidation and Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Transaction Type [Axis] Transaction Type [Axis] Transaction [Domain] Transaction [Domain] Exchange Traded Exchange Traded [Member] PAA senior secured hedged inventory facility Senior Secured Hedged Inventory Facility [Member] Represents activity related to Senior secured hedged inventory credit facility. Credit facility Line of Credit [Member] PAA commercial paper notes Commercial Paper [Member] Other Other Long Term Debt [Member] Other types of long-term debt not specifically identified. Short-term debt: Short-term Debt [Abstract] Short-term notes and borrowings Short-term Debt Senior notes, current Senior Notes, Current Other short-term debt Other Long-term Debt, Current Total short-term debt Weighted average interest rate, short-term Short-term Debt, Weighted Average Interest Rate Long-term debt: Long-term Debt, Unclassified [Abstract] PAA senior notes, net of unamortized discounts and debt issuance costs of $74 and $76, respectively Other long-term debt Total long-term debt Long-term Debt and Capital Lease Obligations Unamortized discounts and debt issuance costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Weighted average interest rate, long-term Long-term Debt, Weighted Average Interest Rate Total debt Debt and Capital Lease Obligations Debt instrument face value Debt Instrument, Face Amount Debt instrument fair value Debt Instrument, Fair Value Disclosure Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Intersegment Intersegment Eliminations [Member] 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. Supply and Logistics Operating Segments Segment Reporting Information [Line Items] Operating segments number Number of Operating Segments Revenues: Segment Reporting Information, Revenue for Reportable Segment [Abstract] Revenues Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments [Abstract] Segment adjusted EBITDA 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. 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. Other current assets Other Current Assets [Member] Other current liabilities Other Current Liabilities [Member] Other long-term liabilities and deferred credits Other Noncurrent Liabilities [Member] Derivative and financial assets and liabilities subject to offsetting Offsetting Assets, Liabilities [Line Items] Netting Adjustment: Offsetting [Abstract] Derivative Asset Positions Offsetting Derivative Assets [Abstract] Gross Position - Asset Derivative Asset, Fair Value, Gross Asset Netting adjustment Derivative Asset, Fair Value, Gross Liability Cash collateral received Net Position - Asset Derivative Asset Derivative Liability Positions Offsetting Derivative Liabilities [Abstract] Gross Position - Liability Derivative Liability, Fair Value, Gross Liability Netting adjustment Derivative Liability, Fair Value, Gross Asset Net Position - Liability Derivative Liability 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. Simplification Agreement Simplification Agreement [Member] The Simplification Agreement entered into by the entity on July 11, 2016. Class Shares 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. PAA GP Paa G P L L C [Member] Represents the information pertaining to PAA GP LLC. ("PAA GP"), of which AAP is the sole member. 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. Economic general partner interest converted into non-economic interest Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Economic Ownership Interest Converted Into Non-economic Interest Percentage of economic interest held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP), converted into a non-economic interest. Ownership interest in the subsidiary Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest Ownership interest in the subsidiary (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. Reverse stock split conversion ratio Stockholders' Equity Note, Stock Split, Conversion Ratio Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Disposal Group Name [Axis] Disposal Group Name [Axis] Disposal Group Name [Domain] Disposal Group Name [Domain] Red River Pipeline Red River Pipeline [Member] Red River Pipeline [Member] Red River Pipeline, Hewitt Segment Red River Pipeline, Hewitt Segment [Member] Red River Pipeline, Hewitt Segment [Member] Red River Pipeline from Ardmore to Longview Red River Pipeline Extending From Ardmore To Longview [Member] Red River Pipeline Extending From Ardmore To Longview [Member] Non-Core Pipeline Segment Non-Core Pipeline Segment [Member] Non-Core Pipeline Segment [Member] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Disposed of by sale Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] Held for sale Disposal Group, Held-for-sale, Not Discontinued Operations [Member] Depreciation and amortization Depreciation And Amortization [Member] Primary financial statement caption encompassing depreciation and amortization. Dispositions Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Interest percentage disposed of Disposal Group, Sale of Assets, Ownership Interest Disposed Of Disposal Group, Sale of Assets, Ownership Interest Disposed Of Interest retained after disposal Disposal Group, Assets Retained after Disposal, Ownership Interest after Disposal Disposal Group, Assets Retained after Disposal, Ownership Interest after Disposal Recognized gains/(losses) related to sales of assets, net Gain (Loss) on Disposition of Business Assets classified as held for sale Disposal Group, Including Discontinued Operation, Assets, Current Impairment related to assets held for sale Impairment of Long-Lived Assets to be Disposed of Derivative assets and liabilities Asset Derivatives Fair Value Liability Derivatives Fair Value Net loss deferred in AOCI Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax Net loss expected to be reclassified to earnings in the next twelve months Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months Remaining loss expected to be reclassified to earnings through 2049 Cash Flow Hedge Gain (Loss) to be Reclassified Remaining Portion The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings after the next twelve months.