Interest Rate Risk Hedging Interest Rate Derivatives [Abstract] Consolidated Entities [Axis] Consolidated Entities [Axis] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Net income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Pay vs Performance Disclosure [Line Items] Other long-term liabilities and deferred credits Other Noncurrent Liabilities [Member] Statistical Measurement [Domain] Statistical Measurement [Domain] Amount awarded to claimants by Court Loss Contingency, Damages Awarded, Value Partner Capital Components [Domain] Partner Capital Components [Domain] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Related Party Transaction [Line Items] Related Party Transaction [Line Items] Preferred stock, liquidation preference (USD per share) Preferred Stock, Liquidation Preference Per Share All Award Types Award Type [Domain] 3.85% senior notes due October 2023 Senior Notes Due In October 2023 At 3.85 Percent [Member] Represents the 3.85 percent senior notes, which are due October 2023. Fair Value as of Grant Date Award Grant Date Fair Value Investment, Name [Domain] Investment, Name [Domain] Claim for Reimbursement From Insurance Claim for Reimbursement From Insurance [Member] Claim for Reimbursement From Insurance Remaining performance obligations, expected timing of satisfaction, period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Debt Debt Disclosure [Text Block] Distributions Total distributions paid Partners' Capital Account, Distributions Other current liabilities Other Current Liabilities [Member] Acquisition amount Payments to Acquire Businesses, Gross Schedule of Assets Acquired and Liabilities Assumed Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Effect of translation adjustment Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Continuing Operations Natural gas purchases for processing and operational needs Natural Gas Contracts [Member] Represents derivative instruments consisting of long natural gas position related to purchase of natural gas. MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Segment Reporting [Abstract] Segment Reporting [Abstract] Preferred unit, credit percentage spread (as a percent) Preferred Unit, Distribution Percentage Credit Spread Adjustment Credit spread adjustment that will be added to the applicable three-month SOFR in the calculation of the distribution rate for the period. Restatement Determination Date: Restatement Determination Date [Axis] Investment, Name [Axis] Investment, Name [Axis] COMMITMENTS AND CONTINGENCIES (NOTE 9) Commitments and Contingencies Insider Trading Policies and Procedures [Line Items] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Exceeded coverage limit under insurance program Loss Contingency, Exceeded Insurance Coverage Limit Loss Contingency, Exceeded Insurance Coverage Limit Disaggregation of Revenue Disaggregation of Revenue [Line Items] Partners' Capital and Distributions [Line Items] Partners' Capital and Distributions [Line Items] Partners' Capital and Distributions [Line Items] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Senior Unsecured Revolving Credit Facility, Maturiting in August 2027 Senior Unsecured Revolving Credit Facility, Maturiting in August 2027 [Member] Senior Unsecured Revolving Credit Facility, Maturiting in August 2027 Type of Arrangement and Non-arrangement Transactions [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Ownership [Axis] Ownership [Axis] PROPERTY AND EQUIPMENT Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization Property and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Number of interest rate derivatives Number of Interest Rate Derivatives Held CURRENT LIABILITIES Liabilities, Current [Abstract] Distribution per Class A share, paid (usd per share) Distributions per common unit, paid (usd per unit) Distribution Made to Limited Partner, Distributions Paid, Per Unit Business Acquisition [Line Items] Business Acquisition [Line Items] Intersegment revenues elimination Intersegment Revenues Elimination Intersegment Eliminations [Member] Repurchase and cancellation of common units by a subsidiary under the Common Equity Repurchase Program (shares) Partners' Capital Account, Shares, Cancellation Of Shares Partners' Capital Account, Shares, Cancellation Of Shares Subsequent Event Type [Domain] Subsequent Event Type [Domain] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Schedule of Net Broker Receivable/(Payable) Schedule of Due to (from) Broker-Dealer and Clearing Organization [Table Text Block] Business combination, equity interest in acquiree, remeasurement gain Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain Impact of derivative activities recognized in earnings Derivative Instruments, Gain (Loss) [Line Items] Diluted net income per Class A share (usd per share) Earnings Per Share, Diluted Gross Position - Liability Derivative Liability, Subject to Master Netting Arrangement, before Offset PEO Total Compensation Amount PEO Total Compensation Amount Cash received from sales of linefill Cash Received Related to Sales of Linefill The cash inflow associated with the sale of linefill. Northern Delaware Basin Gathering System Northern Delaware Basin Gathering System [Member] Northern Delaware Basin Gathering System Hedging Relationship [Axis] Hedging Relationship [Axis] 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 Maintenance capital expenditures Maintenance Capital Expenditures 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. Reclassification adjustments Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax 4 forward starting interest rate swaps (30-year), 0.74% Four Forward Starting Thirty Year Interest Rate Swaps 0.74 Percent [Member] Four Forward Starting Thirty Year Interest Rate Swaps 0.74 Percent Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Level 3 Fair Value, Inputs, Level 3 [Member] Litigation Case [Axis] Litigation Case [Axis] 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. Trading Symbol Trading Symbol Outstanding letters of credit Letters of credit Letters of Credit Outstanding, Amount Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Permian JV Plains Oryx Permian Basin LLC [Member] Plains Oryx Permian Basin LLC NET INCOME ATTRIBUTABLE TO PAGP Net income attributable to PAGP Net Income (Loss) Gain on investment in unconsolidated entities Gain on investment in unconsolidated entities Gain on (Impairment of) Investment in Unconsolidated Entities 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 unconsolidated entity. Total current liabilities Liabilities, Current Schedule of Open Derivative Positions Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block] Derivative Contract [Domain] Derivative Contract [Domain] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] 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. Transportation Transportation [Member] Transportation Company Selected Measure Name Company Selected Measure Name Red River Red River Pipeline Company LLC [Member] Red River Pipeline Company LLC [Member] Property and equipment, net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Total debt Debt and Lease Obligation LIABILITIES AND PARTNERS’ CAPITAL Liabilities and Equity [Abstract] 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 Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Counterparty deficiencies billed and collected Beginning balance Ending balance Contract with Customer, Liability Derivative position notional amount (in barrels or Bcf) Derivative, Nonmonetary Notional Amount, Volume Inventory by category Energy Related Inventory [Abstract] Schedule of Computation of Basic and Diluted Net Income Per Class A Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Purchases and related costs Cost of Goods and Services Sold Derivative liability [Extensible Enumeration] Derivative Liability, Statement of Financial Position [Extensible Enumeration] Litigation Status [Domain] Litigation Status [Domain] Schedule of Linefill and Long-Term Inventory Schedule of Inventory, Noncurrent [Table Text Block] Proceeds from sales of assets Proceeds from Sale of Productive Assets Executive Category: Executive Category [Axis] Common Units and Series A Preferred Units Common Units And Series A Preferred Units [Member] Common Units And Series A Preferred Units [Member] Level 1 Fair Value, Inputs, Level 1 [Member] Name Measure Name Line of credit facility, current borrowing capacity Line of Credit Facility, Current Borrowing Capacity Name Forgone Recovery, Individual Name 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. Equity Components [Axis] Equity Components [Axis] Distribution rate reset, basis spread on variable rate (as a percent) Preferred Units, Distribution Rate Reset, Basis Spread on Variable Rate The percentage points to be added to the applicable rate of the ten-year U.S. Treasury to calculate the new distribution rate on the preferred units if the holders elect to reset the distribution rate. Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Hedging Relationship [Domain] Hedging Relationship [Domain] Cash Distribution Cash Distribution Cash Distribution [Member] Contributions from noncontrolling interests Proceeds from Partnership Contribution Net Carrying Value Presented on the Balance Sheet, Total Derivative Assets (Liabilities), at Fair Value, Net Consolidated Joint Venture Entities Consolidated Joint Venture Entities [Member] Consolidated Joint Venture Entities Linefill, Volumes (barrels) Inventory, Volumes Linefill The volume of linefill inventory as of the balance sheet date. Underlying Securities Award Underlying Securities Amount Small Business Entity Entity Small Business 2026 Finite-Lived Intangible Asset, Expected Amortization, Year Four PAA Plains All American Pipeline L P [Member] Represents the information pertaining to Plains All American Pipeline, L.P. ("PAA"). Local Phone Number Local Phone Number Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Forecast Forecast [Member] Conversion of AAP Management Units (shares) Limited Partners Capital Shares Issued From Conversion Limited Partners Capital Shares Issued From Conversion Transaction [Domain] Transaction [Domain] Notional amount of derivatives Notional amount Derivative, Notional Amount Measurement Frequency [Axis] Measurement Frequency [Axis] Other long-term debt, net Other Other Long-Term Debt, Noncurrent Long-term operating lease liabilities Operating Lease, Liability, Noncurrent Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Schedule of 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] Civil Penalties Consent Decree, Civil Penalties [Member] Consent Decree, Civil Penalties Contract with Customer, Asset And Liability [Table] Contract With Customer, Asset And Liability [Table] Contract With Customer, Asset And Liability [Table] Distributions to PAGP SEC Schedule, 12-04, Cash Dividends Paid to Registrant, Consolidated Subsidiaries Transaction Type [Axis] Transaction Type [Axis] Income Statement Location [Axis] Income Statement Location [Axis] Arrangements and Non-arrangement Transactions [Domain] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Other Partners' Capital, Other Net broker receivable Effect of Collateral Netting (Liability) Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Offset Unamortized discounts and debt issuance costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Judicial Ruling Judicial Ruling [Member] Repayments of PAA senior notes (Note 5) Repayments of senior notes Repayments of Senior Debt Counterparty deficiencies Counterparty Deficiencies Amount associated with deficiencies by counterparties of their contractual minimum commitments. Total revenues Total revenues Revenues from related parties Revenues Revenues Estimated size of release (barrels) Estimated Size of Release Represents the estimated size of the pipeline release. OTHER ASSETS Other Assets, Noncurrent [Abstract] Product and Service [Domain] Product and Service [Domain] Other Performance Measure, Amount Other Performance Measure, Amount Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Trade accounts receivable arising from revenues from contracts with customers Contract with Customer, Asset, after Allowance for Credit Loss, Current Other Other Debt [Member] Other types of debt not specifically identified. Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Litigation Status [Axis] Litigation Status [Axis] Award Type Award Type [Axis] Antidilutive securities excluded from computation of earnings per share (shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Document Quarterly Report Document Quarterly Report Net broker payable Effect of Collateral Netting (Asset) Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash, Offset Against Derivative Asset Current Liabilities Current Liabilities [Member] Primary financial statement captions encompassing current liabilities. Interest expense (net of capitalized interest of $3, $1, $8, and $3, respectively) Interest expense, net Interest Expense Derivative activities and inventory valuation adjustments Gains (Losses) From Derivative Activities and 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 (i) investing activities, such as the purchase of linefill, and (ii) purchases of long-term inventory. Also includes the impact of corresponding inventory valuation adjustments, as applicable. Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Hedging Designation [Axis] Hedging Designation [Axis] Trading Arrangement: Trading Arrangement [Axis] Related Party Transactions Related Party Transactions Disclosure [Text Block] Crude oil Crude Oil [Member] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Derivative assets and liabilities Derivatives, Fair Value [Line Items] Gains on sales of linefill Gain (Loss) on Sales of Linefill Gain (Loss) on Sales of Linefill Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Entity File Number Entity File Number OMOG JV LLC and Southern Delaware Gathering Assets OMOG JV LLC and Southern Delaware Gathering Assets [Member] Remaining interest in OMOG JV Holdings LLC and certain gathering assets in the Southern Delaware basin. Loss Contingencies [Table] Loss Contingencies [Table] Subsidiary of LM Energy Partners Subsidiary of LM Energy Partners [Member] Subsidiary of LM Energy Partners Derivative Liabilities Offsetting Derivative Liabilities [Abstract] Measurement Input, Discount Rate Measurement Input, Discount Rate [Member] Term of derivative contract Derivative, Term of Contract Quarterly distributions per unit (usd per unit) Preferred Units, Quarterly Distributions Per Unit The quarterly distributions per unit to which holders of the preferred units are entitled. Arbitration Proceedings Against Insurers Arbitration Proceedings Against Insurers [Member] Arbitration Proceedings Against Insurers Keyera Fort Saskatchewan Facility Keyera Fort Saskatchewan Facility [Member] Keyera Fort Saskatchewan Facility Entity Shell Company Entity Shell Company Butane contracts related to subsequent sale of products Butane 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. Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Intangible assets, net Finite-Lived Intangible Assets, Net Restatement Determination Date Restatement Determination Date Other revenues Revenue Not from Contract with Customer Counterparty Name [Domain] Counterparty Name [Domain] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents and restricted cash, beginning of period Cash and cash equivalents and restricted cash, end of period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Asset Class [Axis] Asset Class [Axis] Debt instrument fair value Debt Instrument, Fair Value Disclosure Long-Lived Assets Held-for-sale by Asset Type [Axis] Long-Lived Assets Held-for-Sale by Asset Type [Axis] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Business Combination, Consideration Transferred Business Combination, Consideration Transferred Recoveries from insurance carriers Loss Contingency, Receivable, Proceeds Consolidated subsidiary, ownership interest (percentage) Ownership interest in the Permian JV (as a percent) Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest Security Exchange Name Security Exchange Name Net gain/(loss) deferred in AOCI Accumulated Other Comprehensive Income (Loss), Net of Tax Average rate locked (as a percent) Derivative, Average Fixed Interest Rate Employee Stock Option Employee Stock Option [Member] Derivatives and Risk Management Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Schedule of Amortization Expense Finite-Lived Intangible Assets Amortization Expense [Table Text Block] Total costs and expenses Costs and Expenses Other financing activities Proceeds from (Payments for) Other Financing Activities Maximum Maximum [Member] Comprehensive income attributable to PAGP Comprehensive Income (Loss), Net of Tax, Attributable to Parent Adjusted EBITDA attributable to noncontrolling interests in consolidated joint ventures Adjusted EBITDA Attributable To Noncontrolling Interests In Consolidated Joint Ventures Adjusted EBITDA Attributable To Noncontrolling Interests In Consolidated Joint Ventures Field operating costs Field Operating Costs [Member] Costs related to site and field operations during the period. Document Type Document Type Schedule of Related Party Transactions Schedule of Related Party Transactions [Table Text Block] Litigation settlement agreement amount, subject to approval Litigation Settlement Amount Agreed Upon Subject to Approval Amount to be awarded to other party in a settlement agreement entered into during the period that is subject to approval by the court and other conditions. Tabular List, Table Tabular List [Table Text Block] Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two 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. Preferred Distribution Rate Reset Option Embedded Derivative Financial Instruments [Member] Cash paid for purchases of linefill Cash Paid Related to Purchases of Linefill The cash outflow associated with the purchase of linefill. Excluding Line 901 Incident Excluding Line 901 Incident [Member] Excluding Line 901 Incident Distributions paid to Class A shareholders (Note 6) Distribution Made to Limited Partner, Cash Distributions Paid Other Other Noncash Income (Expense) Business Acquisition [Axis] Business Acquisition [Axis] Total net derivative asset/(liability) Derivative, Fair Value, Net Derivative position notional amount (in Terawatt hours) Derivative, Nonmonetary Notional Amount, Energy Measure Amount paid to plaintiff Loss Contingency, Damages Paid, Value Subsequent Event Subsequent Event [Member] Derivative [Table] Derivative [Table] Other current liabilities Other Liabilities, Current Cactus II Cactus II Pipeline LLC [Member] Cactus II Pipeline LLC Income Statement [Abstract] Income Statement [Abstract] Estimated undiscounted reserve for environmental liabilities, short-term [Extensible Enumeration] Environmental Loss Contingency, Current, Statement of Financial Position [Extensible Enumeration] Inventory [Line Items] Inventory [Line Items] COSTS AND EXPENSES Costs and Expenses [Abstract] Title of 12(b) Security Title of 12(b) Security Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Long-Lived Assets Held-for-sale, Name [Domain] Long-Lived Assets Held-for-Sale, Name [Domain] Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Related Party [Domain] Related Party, Type [Domain] 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. Net Carrying Value Presented on the Balance Sheet Derivative liability Derivative Liability 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. Distributions paid to noncontrolling interests (Note 6) Payments of Ordinary Dividends, Noncontrolling Interest Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Noncontrolling interests in subsidiaries (as a percent) Subsidiary, Ownership Percentage, Noncontrolling Owner Operating Segments Operating Segments [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. Other current assets Other Assets, Current Repurchase of common units by a subsidiary Payments to Noncontrolling Interests Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Entity Tax Identification Number Entity Tax Identification Number Preferred unit distribution amount Dividends, Preferred Stock Investments in unconsolidated entities Equity Method Investments Inventory Inventory, carrying value Inventory, Net Basic and Diluted Net Income Per 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. Statistical Measurement [Axis] Statistical Measurement [Axis] Long-term inventory Long-term inventory subtotal, carrying value Inventory, Noncurrent Linefill (Price/Unit of measure) (usd per barrel) Inventory, Weighted Average Price Per Unit, Linefill Inventory, Weighted Average Price Per Unit, Linefill Commodity Price Risk Hedging: Price Risk Derivatives [Abstract] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Entity Interactive Data Current Entity Interactive Data Current Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Effect of Collateral Netting Offsetting [Abstract] Total Shareholder Return Amount Total Shareholder Return Amount Changes in assets and liabilities, net of acquisitions Increase (Decrease) in Operating Capital Product sales revenues Sales Product sales Product [Member] Entity Common Stock, Shares Outstanding (shares) Entity Common Stock, Shares Outstanding Estimated size of release to reach Pacific Ocean (barrels) Estimated Size Of Release To Reach Body Of Water Estimated Size Of Release To Reach Body Of Water Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Number of misdemeanor charges found 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 Acquisitions and Divestitures Mergers, Acquisitions and Dispositions Disclosures [Text Block] Inventory by category Inventory Disclosure [Abstract] Partners’ Capital Parent [Member] Segments [Domain] Segments [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Schedule of Activity for Class A Shares, Class B Shares and Class C Shares Schedule of Stockholders Equity [Table Text Block] Consolidation Items [Domain] Consolidation Items [Domain] Measure: Measure [Axis] 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 Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Name Outstanding Recovery, Individual Name Debt instrument face value Debt Instrument, Face Amount Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Repurchase of common units by a subsidiary Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Repurchase of Shares by Subsidiary Distribution Type [Domain] Distribution Type [Domain] 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 CURRENT ASSETS Assets, Current [Abstract] 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. Entity Address, State or Province Entity Address, State or Province Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Short Short [Member] Counterparty Name [Axis] Counterparty Name [Axis] Consolidated Entity Excluding VIE Consolidated Entity, Excluding Consolidated VIE [Member] Other Other Long Term Debt [Member] Other types of long-term debt not specifically identified. Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Senior Secured Hedged Inventory Facility Senior Secured Hedged Inventory Facility [Member] Senior Secured Hedged Inventory Facility Remainder of 2023 Finite-Lived Intangible Asset, Expected Amortization, Year One Number of felony discharges found guilty Indictment, Number of Felony Discharges, Guilty Verdict Indictment, Number of Felony Discharges, Guilty Verdict Environmental Remediation Contingency [Axis] Environmental Remediation Contingency [Axis] PEO PEO [Member] Aggregate total estimated costs Loss Contingency, Estimate of Possible Loss Linefill Linefill, carrying value Linefill Crude oil or NGL linefill in pipelines, tanks and caverns that are owned by the entity. Linefill is intended for long-term use. AAP Management Units AAP Management Units [Member] AAP Management Units Finite-Lived Intangible Assets Finite-Lived Intangible Assets [Member] Preferred unit distribution amount (usd per share) Preferred Stock, Dividends, Per Share, Cash Paid Asset Class [Domain] Asset Class [Domain] Gross Position - Asset Derivative Asset, Subject to Master Netting Arrangement, before Offset 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. Distribution Type [Axis] Distribution Type [Axis] Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Schedule of Inventory Schedule of Inventory, Current [Table Text Block] Crude oil basis spread position Crude Oil Grade Basis Position [Member] Represents the derivative instruments that hedge crude oil purchases based on grade basis differentials. Interest Rate Swap Interest Rate Swap [Member] Debt maturity, length of extension Debt Maturity Extension Length Of Extension Debt Maturity Extension Length Of Extension Debt Instrument [Axis] Debt Instrument [Axis] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Total repayments Repayments of Debt Measurement Input Type [Domain] Measurement Input Type [Domain] Credit Facility [Axis] Credit Facility [Axis] 8 forward starting interest rate swaps (30-year), 3.09% Eight Forward Starting Thirty Year Interest Rate Swaps 3.09 Percent [Member] Eight Forward Starting Thirty Year Interest Rate Swaps 3.09 Percent Noncontrolling interests Partners' Capital Attributable to Noncontrolling Interest Services revenues Services Service [Member] Current income tax expense Current Income Tax Expense (Benefit) Organization and Basis of Consolidation and Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Measurement Frequency [Domain] Measurement Frequency [Domain] All Executive Categories All Executive Categories [Member] Response to Request for Reimbursement Not Received Response to Request for Reimbursement Not Received [Member] Response to Request for Reimbursement Not Received Rattler Rattler Midstream Operating LLC [Member] Rattler Midstream Operating LLC Settled Litigation Settled Litigation [Member] 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. LONG-TERM LIABILITIES Liabilities, Noncurrent [Abstract] Limited Partners' Capital Account, Class [Domain] Limited Partners' Capital Account, Class [Domain] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Statement of Partners' Capital [Abstract] Statement of Partners' Capital [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Change in fair value of Preferred Distribution Rate Reset Option (Note 7) Gain/(loss) recognized Embedded Derivative, Gain (Loss) on Embedded Derivative, Net Schedule of Distributions Distributions Made to Limited Partner, by Distribution [Table Text Block] Reportable segments Number of Reportable Segments Earnings Per Share [Abstract] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Affiliated Entity Affiliated Entity [Member] General and administrative expenses Unallocated general and administrative expenses General and Administrative Expense Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Public Public Unit Holders [Member] Public Unit Holders [Member] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Senior notes Senior Notes [Member] Total current assets Assets, Current Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] All Individuals All Individuals [Member] Other Other Inventory [Member] Category of inventory not separately disclosed. Cash paid for: Supplemental Cash Flow Information [Abstract] Reconciliation from Segments to Consolidated [Table] Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table] Amortization Amortization Litigation Case [Domain] Litigation Case [Domain] Other income/(expense), net Other income/(expense), net Other Nonoperating Income (Expense) Entity Filer Category Entity Filer Category Business combination, measurement input Business Combination, Measurement Input Business Combination, Measurement Input Other AOCI, Other, Including Portion Attributable to Noncontrolling Interest [Member] AOCI, Other, Including Portion Attributable to Noncontrolling Interest [Member] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Short-term Debt, Type [Domain] Short-Term Debt, Type [Domain] Statement [Table] Statement [Table] Increase (Decrease) in Partners' Capital Increase (Decrease) in Partners' Capital [Roll Forward] Current Fiscal Year End Date Current Fiscal Year End Date Denial of Insurance Coverage Denial of Insurance Coverage [Member] Denial of Insurance Coverage Limited Partners Limited Partner [Member] Trade accounts payable Trade accounts payable to related parties Accounts Payable, Trade, Current 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) Common Units Common Units [Member] Common units representing limited partner interests in the entity. Schedule of Net Unrealized Gain/(Loss) Recognized in AOCI for Derivatives Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] PEO Name PEO Name Amounts probable of recovery under insurance and from third parties under indemnification agreements Recorded Third-Party Environmental Recoveries Receivable 2027 Finite-Lived Intangible Asset, Expected Amortization, Year Five Settlements Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements SHORT-TERM DEBT Short-Term Debt [Abstract] Substantially all trade accounts receivable, net, maximum age of balances past their invoice date Trade Accounts Receivable Net Disclosure of Maximum Age of Balances Past Invoice Date The maximum number of days past their invoice date for substantially all of the trade accounts receivable. Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Inventory, Volumes (barrels) Inventory, Volumes Current The volume of current inventory as of the balance sheet date. Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] AAP Plains AAP L P [Member] Represents information pertaining to Plains, AAP L.P (AAP). Other trade accounts receivables and other receivables Accounts and Other Receivables, Net, Current Other Other Comprehensive Income, Other, Net of Tax Depreciation and amortization Depreciation and amortization Depreciation and amortization Depreciation, Depletion and Amortization Fuel gas requirements Fuel Gas Requirements Contracts [Member] Fuel Gas Requirements Contracts Line 901 Incident Line 901 Incident [Member] Represents information pertaining to the crude oil release from the Las Flores to Gaviota Pipeline in Santa Barbara County, California. (Gains)/losses on asset sales and asset impairments, net Gains on asset sales and asset impairments, net Gains/(losses) on asset sales and asset impairments, net Gain (Loss) on Sale of Assets and Asset Impairment Charges OMOG JV LLC OMOG JV LLC [Member] OMOG JV LLC Debt instrument, interest rate (as a percent) Debt Instrument, Interest Rate, Stated Percentage Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] 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. Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Business Combination and Asset Acquisition [Abstract] Business Combination, Consideration Transferred, Including Equity Interest in Acquiree Held Prior to Combination Business Combination, Consideration Transferred, Including Equity Interest in Acquiree Held Prior to Combination Consolidation Items [Axis] Consolidation Items [Axis] Amounts recognized as revenue Contract with Customer, Liability, Revenue Recognized Consolidated subsidiary, ownership interest (shares) 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. Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax 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 Total long-term debt Long-Term Debt and Lease Obligation INCOME BEFORE TAX Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Terminalling, storage and other agreement revenues Terminalling, Long-Term Storage And Other Agreements Revenues [Member] Terminalling , Long-Term Storage And Other Agreements Revenues [Member] Net fair value of interest rate hedges Interest Rate Cash Flow Hedge Derivative at Fair Value, Net Derivatives Not Designated as a Hedge Not Designated as Hedging Instrument [Member] Basic and Diluted Net Income per Class A Share Earnings Per Share Reconciliation [Abstract] NGL NGL Natural Gas Liquids Segment [Member] Natural Gas Liquids Segment Hedging Designation [Domain] Hedging Designation [Domain] Level 2 Fair Value, Inputs, Level 2 [Member] Schedule of Limited Partners' Capital Account by Class [Table] Schedule of Limited Partners' Capital Account by Class [Table] Credit facilities 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. Emerging Growth Company Entity Emerging Growth Company Exchange traded Exchange Traded [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Assets held-for-sale Asset, Held-for-Sale, Not Part of Disposal Group Other long-term assets, net Other long-term assets, net Other Noncurrent Assets [Member] Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Schedule of Impact of Derivatives Recognized in Earnings Derivative Instruments, Gain (Loss) [Table Text Block] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Document Fiscal Period Focus Document Fiscal Period Focus Finite-Lived Intangible Asset, Useful Life Finite-Lived Intangible Asset, Useful Life Crude oil purchases Crude Oil Derivative Contracts [Member] Represents the derivative instruments utilized to hedge risk associated with crude oil purchases. 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. Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Title Trading Arrangement, Individual Title Propane contracts related to subsequent sale of products Propane 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. Long-term inventory, Volumes (barrels) Inventory, Volumes, Noncurrent The volume of noncurrent inventory as of the balance sheet date. Undivided joint interest ownership percentage, sold (as a percent) Non-Operated/Undivided Joint Interest Ownership Percentage, Sold Non-Operated/Undivided Joint Interest Ownership Percentage, Sold Estimated undiscounted reserve for environmental liabilities, short-term Accrued Environmental Loss Contingencies, Current Position [Domain] Position [Domain] Line 901 2015 Insurance Program Line 901 2015 Insurance Program [Member] Line 901 2015 Insurance Program Individual: Individual [Axis] City Area Code City Area Code Entity Address, Postal Zip Code Entity Address, Postal Zip Code Net Income Per Class A Share Earnings Per Share [Text Block] Product and Service [Axis] Product and Service [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Acquisition amount, net to our interest Business Combination Consideration Transferred Net To Ownership Interest Amount of consideration transferred reflected on a net basis, representing the entity's proportionate share based on its ownership percentage of the less than wholly owned consolidated subsidiary. Valuation Technique, Discounted Cash Flow Valuation Technique, Discounted Cash Flow [Member] Ownership interest in unconsolidated entity, prior to acquisition (as a percent) Equity Method Investment, Ownership Percentage Beginning Balance Ending Balance Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs Document Fiscal Year Focus Document Fiscal Year Focus Distributions to noncontrolling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Settlement of terminated interest rate hedging instruments (Note 7) Net cash (paid) received for terminated hedging instruments Net Cash (Paid) Received for Terminated Hedging Instruments The net cash (paid) received for terminated hedging instruments. Inventory [Domain] Inventory [Domain] Partners' Capital and Distributions Partners' Capital Notes Disclosure [Text Block] Crude Oil Crude Oil Crude Oil Segment [Member] Crude Oil Segment Minimum Minimum [Member] 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. Distributions on earnings from unconsolidated entities Proceeds from Equity Method Investment, Distribution Total partners’ capital Beginning balance Ending balance Partners' Capital, Including Portion Attributable to Noncontrolling Interest Trade accounts receivable and other receivables, net Trade accounts receivable and other receivables, net Trade accounts receivable and other receivables, net from related parties Receivables, Net, Current Exercise Price Award Exercise Price Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Other comprehensive income/(loss) Total period activity Other comprehensive income/(loss) Other Comprehensive Income (Loss), Net of Tax Power supply requirements Power Supply Requirements Contracts [Member] Represents the derivative instruments consisting of long power positions which hedge a portion of power supply requirements. Partners' Capital and Distributions [Table] Partners' Capital and Distributions [Table] Disclosure reflecting information pertaining to Partners' Capital and related distributions. Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Translation Adjustments Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member] ASSETS Assets [Abstract] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Commodity derivatives Commodity Contract [Member] Schedule 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] (Gain)/loss on foreign currency revaluation Gain (Loss), Foreign Currency Transaction, before Tax Interest expense, capitalized interest Interest Costs Capitalized CASH FLOWS FROM FINANCING ACTIVITIES Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Other current assets Other Current Assets [Member] NET INCOME Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Gain on investment in unconsolidated entities Gain on investment in unconsolidated entities [Member] Gain on investment in unconsolidated entities Schedule of Contract with Customer, Counterparty Deficiencies Contract with Customer, Counterparty Deficiencies [Table Text Block] Contract with Customer, Counterparty Deficiencies Income taxes, net of amounts refunded Income Taxes Paid, Net Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Deferred tax asset Deferred Income Tax Assets, Net Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Other investing activities Payments for (Proceeds from) Other Investing Activities Ownership interests acquired percentage (as a percent) Business Acquisition, Percentage of Voting Interests Acquired Minimum Volume Commitments Contract With Customer, Asset And Liability [Line Items] [Line Items] for Contract With Customer, Asset And Liability [Table] Working capital and other assets and liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Working Capital and Other Assets and Liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Working Capital and Other Assets and Liabilities Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Schedule of Reconciliation of Segment Adjusted EBITDA to Net income attributable to PAGP Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Total liabilities and partners’ capital Liabilities and Equity OTHER INCOME/(EXPENSE) Nonoperating Income (Expense) [Abstract] Other long-term assets, net Other Assets, Noncurrent Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Ownership [Domain] Ownership [Domain] Basic net income per Class A share (usd per share) Earnings Per Share, Basic Long-term operating lease right-of-use assets, net Operating Lease, Right-of-Use Asset Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Changes in Accumulated Other Comprehensive Income/(Loss) AOCI Including Portion Attributable to Noncontrolling Interest [Abstract] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Adjustments: Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] 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 Arrangement Duration Trading Arrangement Duration Entity Address, City or Town Entity Address, City or Town Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Schedule of Segment Financial Data Schedule of Segment Reporting Information, by Segment [Table Text Block] Inventory, Current [Table] Inventory, Current [Table] Significant costs related to legal and environmental remediation matters Line 901 incident Significant Costs Related To Legal And Environmental Remediation Matters Significant Costs Related To Legal And Environmental Remediation Matters Partner Capital Components [Axis] Partner Capital Components [Axis] Business combination, equity interest in acquiree, fair value Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value Pending Litigation Pending Litigation [Member] Total long-term liabilities Liabilities, Noncurrent Total borrowings Proceeds from Issuance of Debt Change in Contract with Customer, Liability Change In Contract With Customer, Liability [Roll Forward] Change In Contract With Customer, Liability [Roll Forward] CASH FLOWS FROM INVESTING ACTIVITIES Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Preferred unit, distribution percentage spread (as a percent) Preferred Unit, Distribution Percentage Spread Percentage spread that will be added to the applicable three-month benchmark rate in the calculation of the distribution rate for the period. Document Transition Report Document Transition Report Award Timing Predetermined Award Timing Predetermined [Flag] Long-term inventory (Price/Unit of measure) (usd per barrel) Inventory, Weighted Average Price Per Unit, Noncurrent Inventory, Weighted Average Price Per Unit, Noncurrent Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Termination Date Trading Arrangement Termination Date Coverage limit under insurance program Insurance Coverage Limit Insurance Coverage Limit Inventory (Price/Unit of measure) (usd per barrel) Inventory, Weighted Average Price Per Unit, Current Inventory, Weighted Average Price Per Unit, Current Counterparty deficiencies unbilled 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. Pipeline revenues supported by minimum volume commitments and 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 Recurring Fair Value Measurements Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fines or penalties assessed Loss Contingency Penalty or Fine Assessed Represents penalty or fine assessed on the entity in connection with an environmental matter. Derivative Instrument [Axis] Derivative Instrument [Axis] Total release costs probable of recovery Loss Contingency, Received and Receivable Total estimated recoveries from third parties associated with a loss contingency, including amounts received to date and estimated amounts recoverable. 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] Related Party Transactions [Abstract] Related Party Transactions [Abstract] All Trading Arrangements All Trading Arrangements [Member] Measurement Input Type [Axis] Measurement Input Type [Axis] Accumulated depreciation Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization All Adjustments to Compensation All Adjustments to Compensation [Member] Derivatives and Risk Management Activities Derivative [Line Items] Award Timing Disclosures [Line Items] Class A shareholders (196,416,760 and 194,407,642 shares outstanding, respectively) Limited Partners' Capital Account Compensation Amount Outstanding Recovery Compensation Amount Amount accrued to distributions payable Dividends Payable Schedule of Remaining Performance Obligations Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] 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. Comprehensive income attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Condensate sales contracts related to subsequent sale of products Condensate Contracts Related To Subsequent Sale Of Product Member [Member] Represents the derivative instruments in a short position for condensate that hedges the subsequent sale of products derived from our natural gas processing and NGL fractionation activities. Interest rate swap terminated Interest Rate Swap Terminated [Member] Interest Rate Swap Terminated Inventory [Axis] Inventory [Axis] Net Carrying Value Presented on the Balance Sheet Derivative Asset Deferred income tax (expense)/benefit Deferred income tax expense Deferred Income Tax Expense (Benefit) Subsequent Event Type [Axis] Subsequent Event Type [Axis] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Partners' Capital Notes [Abstract] Partners' Capital Notes [Abstract] Revenues: Segment Reporting Information, Revenue for Reportable Segment [Abstract] Short-term Debt, Type [Axis] Short-Term Debt, Type [Axis] Short-term debt Total short-term debt Debt, Current 2025 Finite-Lived Intangible Asset, Expected Amortization, Year Three 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. Contributions from noncontrolling interests Partners' Capital Account, Contributions Insider Trading Arrangements [Line Items] Segment Reporting, Reconciling Item from Segments to Consolidated Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] Estimated undiscounted reserve for environmental liabilities Accrual for Environmental Loss Contingencies, Gross Related Party [Axis] Related Party, Type [Axis] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] 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. Entity Registrant Name Entity Registrant Name Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Award Timing Method Award Timing Method [Text Block] 2024 Finite-Lived Intangible Asset, Expected Amortization, Year Two Partners' Capital and Distributions Partners Capital and Distribution [Line Items] No definition available. Adjustment to Compensation, Amount Adjustment to Compensation Amount 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. Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Document Period End Date Document Period End Date Total Inventory, Current and Noncurrent This element represents the aggregate of current and non-current inventory, including linefill. Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Class Action Lawsuit Claim of Damages Class Action Lawsuit Claim of Damages [Member] Class action lawsuit in which the plaintiffs claim two different classes of claimants were damaged by the release. Partner Type of Partners' Capital Account, Name [Domain] Partner Type of Partners' Capital Account, Name [Domain] Adoption Date Trading Arrangement Adoption Date Peer Group Issuers, Footnote Peer Group Issuers, Footnote [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] Proceeds from sale of undivided joint interest Proceeds from Divestiture of Interest in Joint Venture Entity Central Index Key Entity Central Index Key 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. Segment Reporting Information Segment Reporting Information [Line Items] Remaining undiscounted liability Loss Contingency Accrual Net gain/(loss) from commodity derivative activity Derivative, Gain (Loss) on Derivative, Net Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Income tax (expense)/benefit Income Tax Expense (Benefit) Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Environmental Remediation Contingency [Domain] Environmental Remediation Contingency [Domain] Time spread on hedging anticipated crude oil lease gathering purchases Time Spread On Hedge Anticipated Crude Oil Lease Gathering Purchase Contracts [Member] Represents the derivative instruments utilized to hedge anticipated crude oil lease gathering purchases. Shares outstanding (shares) Balance, beginning of period (shares) Balance, end of period (shares) Limited Partners' Capital Account, Units Outstanding Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Operating segments number Number of Operating Segments Derivative Instruments AOCI cash flow hedge Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member] Name Trading Arrangement, Individual Name Terminalling, Storage and Other Terminalling, Storage and Other [Member] Terminalling, Storage and Other Senior Unsecured Revolving Credit Facility Senior Unsecured Revolving Credit Facility [Member] Senior Unsecured Revolving Credit Facility Field operating costs Operating Costs and Expenses Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Payments for legal settlements Payments for Legal Settlements Distributions paid to limited partners Limited Partners' Capital Account, Distribution Amount Inventory, Linefill and Long-term Inventory Inventory Disclosure [Text Block] Revenues from contracts with customers Revenue from Contract with Customer, Excluding Assessed Tax Entity [Domain] Entity [Domain] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Amendment Flag Amendment Flag 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. Legal Entity [Axis] Legal Entity [Axis] Gross Position - Asset Derivative Liability, Subject to Master Netting Arrangement, Asset Offset Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments [Abstract] Number of misdemeanor charges found guilty Indictment, Number of Misdemeanor Charges, Guilty Verdict Indictment, Number of Misdemeanor Charges, Guilty Verdict Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value 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. Interest, net of amounts capitalized Interest Paid, Excluding Capitalized Interest, Operating Activities Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest PARTNERS’ CAPITAL Partners' Capital, Including Portion Attributable to Noncontrolling Interest [Abstract] Receivable for remaining portion of release costs probable of recovery from insurance Loss Contingency, Receivable Credit Facility [Domain] Credit Facility [Domain] Property, Plant and Equipment, Useful Life Property, Plant and Equipment, Useful Life Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Senior notes, net PAA senior notes, net of unamortized discounts and debt issuance costs of $42 and $46, respectively Senior Notes, Noncurrent Diluted weighted average Class A shares outstanding (shares) Weighted Average Number of Shares Outstanding, Diluted Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Interest rate derivatives Interest Rate Contract [Member] Schedule of Contracts with Customers, Change in Asset and Liability Balance Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Ownership interest after acquisition percentage (as a percent) Business Combination, Step Acquisition, Equity Interest in Acquiree, Including Subsequent Acquisition, Percentage Revenues and Accounts Receivable Revenue from Contract with Customer [Text Block] Derivative Assets Offsetting Derivative Assets [Abstract] Additions to property, equipment and other Payments to Acquire Property, Plant, and Equipment Company Selected Measure Amount Company Selected Measure Amount 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. 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. Unrealized gain on hedges Interest rate derivatives, net Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Balance Sheet Location [Axis] Balance Sheet Location [Axis] Total assets Assets Name Awards Close in Time to MNPI Disclosures, Individual Name Offsetting Assets, Liabilities [Line Items] Derivative and financial assets and liabilities subject to collateral netting Offsetting Assets, Liabilities [Line Items] Equity earnings in unconsolidated entities Equity earnings in unconsolidated entities Equity earnings in unconsolidated entities Income (Loss) from Equity Method Investments Legal, Environmental or Regulatory Matters Loss Contingencies [Line Items] Cover page. Cover [Abstract] Position [Axis] Position [Axis] Series B Preferred Units Series B Preferred Units [Member] Series B preferred units representing perpetual limited partner interests in the entity that rank pari passu with Series A preferred units and are not redeemable at the opiton of the holders under any circumstances. Recurring Fair Value Measures Fair Value, Recurring [Member] 2.85% senior notes due January 2023 Senior Notes Due In January 2023 At 2.85 Percent [Member] Senior Notes Due In January 2023 At 2.85 Percent Cash paid in connection with acquisitions, net of cash acquired Payments to Acquire Businesses and Interest in Affiliates Unallocated Segment Reconciling Items [Member] Other long-term liabilities and deferred credits Other Liabilities, Noncurrent Non-NEOs Non-NEOs [Member] Remaining performance obligation Revenue, Remaining Performance Obligation, Amount Purchases and related costs from related parties Related Party Transaction, Purchases from Related Party Other income/(expense), net Other Nonoperating Income (Expense) [Member] Cash flow hedge Cash Flow Hedging [Member] Segment Information Segment Reporting Disclosure [Text Block] Summary of Distributions made to Noncontrolling Interests in Consolidated Joint Ventures Distributions Made to Noncontrolling Interests [Table Text Block] Distributions Made to Noncontrolling Interests Rollforward of Level 3 Net Asset/(Liability) Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] 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 Shares outstanding Limited Partners' Capital Account [Line Items] Non-PEO NEO Non-PEO NEO [Member] Equity Component [Domain] Equity Component [Domain] Adjustment to Compensation: Adjustment to Compensation [Axis] Segment Adjusted EBITDA 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 (d) our proportionate share of the depreciation and amortization expense of unconsolidated entities, further adjusted (e) for certain selected items including (i) gains and losses 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 either related to investing activities (such as the purchase of linefill) or purchases of long-term inventory, 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 the applicable amounts subsequently recognized into revenue and (v) other items that our Chief Operating Decision Maker believes are integral to understanding our core segment operating performance and (f) to exclude the portion of all preceding items that is attributable to noncontrolling interests in consolidated joint venture entities. Anticipated net sales of crude oil and NGL inventory 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. Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Gross Position - Liability Derivative Asset, Subject to Master Netting Arrangement, Liability Offset Scenario [Axis] Scenario [Axis] LONG-TERM DEBT Long-Term Debt, Unclassified [Abstract] Debt Debt Instrument [Line Items] Basic weighted average Class A shares outstanding (shares) Weighted Average Number of Shares Outstanding, Basic Entity Current Reporting Status Entity Current Reporting Status OPERATING INCOME Operating Income (Loss) Total AOCI Including Portion Attributable to Noncontrolling Interest [Member] REVENUES Revenues [Abstract] Equity-indexed compensation expense Equity Indexed Compensation Expense Awards That Will Be Settled In Units Expense associated with equity-indexed compensation awards that will be settled in units. Long Long [Member] Consolidated Entities [Domain] Consolidated Entities [Domain] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Segments [Axis] Segments [Axis] CASH FLOWS FROM OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Statement [Line Items] Statement [Line Items] Variation margin 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. Scenario [Domain] Scenario [Domain] Partner Type [Axis] Partner Type [Axis] Transaction-related expenses Transaction-related expenses Expenses associated with joint venture transactions and acquisitions Estimated undiscounted reserve for environmental liabilities, long-term [Extensible Enumeration] Environmental Loss Contingency, Noncurrent, Statement of Financial Position [Extensible Enumeration] Schedule of Terms of Outstanding Interest Rate Derivatives Schedule of Derivative Instruments [Table Text Block] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Schedule of Debt Schedule of Debt [Table Text Block] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Customer Relationships Customer Relationships [Member] Estimated undiscounted reserve for environmental liabilities, long-term Accrued Environmental Loss Contingencies, Noncurrent AAP Units AAP Units [Member] AAP Units NGL Natural Gas Liquids [Member] Limited Partners' Capital Account by Class [Axis] Limited Partners' Capital Account by Class [Axis] Noncontrolling Interests Noncontrolling Interest [Member]