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<!-- DFIN New ActiveDisclosure (SM) XBRL Schema Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date :2026-06-22T13:42:35.3851+00:00 -->
<!-- Copyright (c) 2026 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
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          <link:loc xlink:type="locator" xlink:href="psx-20251231.xsd#psx_IGTInvescoIntermediateGovCreditFundMember" xlink:label="psx_IGTInvescoIntermediateGovCreditFundMember"/>
          <link:loc xlink:type="locator" xlink:href="psx-20251231.xsd#psx_MultipleAssetWrapsMember" xlink:label="psx_MultipleAssetWrapsMember"/>
          <link:loc xlink:type="locator" xlink:href="psx-20251231.xsd#psx_GoldmanSachsMember" xlink:label="psx_GoldmanSachsMember"/>
          <link:loc xlink:type="locator" xlink:href="psx-20251231.xsd#psx_GoldmanSachsCoreMember" xlink:label="psx_GoldmanSachsCoreMember"/>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanInvestmentsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee Benefit Plan Investments [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanInvestmentsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Employee benefit plan investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Change in Net Asset Available for Benefit, Increase [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseForPaymentToParticipant_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseForPaymentToParticipant_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Benefit payments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Inputs, Level 2 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 2</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Related Party and Party-in-Interest Transactions [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Fiscal Period Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanFullyBenefitResponsiveInvestmentContractTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Fully Benefit-Responsive Investment Contract [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net gain as reported in the Form 5500</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net gain as reported in the Form 5500</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Form 5500 Caption, Net Income (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanTaxStatusAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Tax Status [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Description of Plan [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Plan Description</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForInterestIncomeOnNoteReceivableFromParticipant_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest income on notes receivable from participants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForInterestIncomeOnNoteReceivableFromParticipant_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIdentifierAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Identifier [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseForAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseForAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Administrative expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_GoldmanSachsCorePlusFixedIncomeCommonCollectiveTrustMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Goldman Sachs Core Plus Fixed Income Common Collective Trust [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_GoldmanSachsCorePlusFixedIncomeCommonCollectiveTrustMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Goldman Sachs Core Plus Fixed Income Common Collective Trust [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_GoldmanSachsCorePlusFixedIncomeCommonCollectiveTrustMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goldman Sachs Core Plus Fixed Income CCT</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Description of Plan [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">EBP, Plan Description [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanEmployerContributionMatchingPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Employer Contribution, Matching Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanEmployerContributionMatchingPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Employee benefit plan, employer contribution, matching percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentIssuerNameExtensibleEnumeration_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Employee Benefit Plan, Investment, Issuer Name [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentIssuerNameExtensibleEnumeration_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Investment, Issuer Name [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Investment, Fair Value and NAV [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanMaximumTermOfAHomeLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee Benefit Plan Maximum Term Of A Home Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanMaximumTermOfAHomeLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Employee benefit plan maximum term of a home loan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanMaximumTermOfAHomeLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum term of a home loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanReconciliationToForm5500ChangeInNetAssetAvailableForBenefitPriorPeriodIncreaseForContractValueToCurrentValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee Benefit Plan Reconciliation To Form 5500 Change In Net Asset Available For Benefit Prior Period Increase For Contract Value To Current Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanReconciliationToForm5500ChangeInNetAssetAvailableForBenefitPriorPeriodIncreaseForContractValueToCurrentValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Employee benefit plan reconciliation to form 5500 change in net asset available for benefit prior period increase for contract value to current value.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanReconciliationToForm5500ChangeInNetAssetAvailableForBenefitPriorPeriodIncreaseForContractValueToCurrentValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reverse adjustment from contract value to fair value for certain fully benefit-responsive investment contracts at December 31, 2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanLiabilityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanLiabilityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Liability [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Accounting Policy [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployerMatchingContribution_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employer Matching Contribution</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployerMatchingContribution_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Employer matching contribution.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployerMatchingContribution_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Employer matching contribution</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanNoteReceivableFromParticipantPrimeRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee Benefit Plan Note Receivable From Participant Prime Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanNoteReceivableFromParticipantPrimeRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Employee benefit plan note receivable from participant prime rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanNoteReceivableFromParticipantPrimeRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Employee benefit plan, note receivable from participant prime rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanInvestmentsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee Benefit Plan Investments [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanInvestmentsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Employee benefit plan investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Schedule of Asset Held for Investment [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanStatementOfNetAssetAvailableForBenefitLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Statement of Net Asset Available for Benefit [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForInterestAndDividendIncomeOnInvestmentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForInterestAndDividendIncomeOnInvestmentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_ShortTermInvestmentFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Short Term Investment Fund</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_ShortTermInvestmentFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Short Term Investment Fund [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_ShortTermInvestmentFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Short term investment fund.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_JPMCBLargeCapGrowthFundClassCF-ECommonCollectiveTrustMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">JPMCB Large Cap Growth Fund Class CF-E Common Collective Trust [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_JPMCBLargeCapGrowthFundClassCF-ECommonCollectiveTrustMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">JPMCB Large Cap Growth Fund Class CF-E Common Collective Trust.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_JPMCBLargeCapGrowthFundClassCF-ECommonCollectiveTrustMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">JPMCB Large Cap Growth Fund; Class CF-E CCT</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AmendmentFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amendment Flag</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForEmployerContribution_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Company contributions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForEmployerContribution_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash and Noncash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForEmployerContribution_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash and Noncash, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Change in Net Asset Available for Benefit, Decrease [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deductions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAccountMinimumBorrowingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Note Receivable from Participant, Account, Minimum Borrowing, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAccountMinimumBorrowingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum loan amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Schedule of Asset Held for Investment [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Employee Benefit Plan, Schedule of Asset Held for Investment [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Hierarchy and NAV [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanEmployerCommonStockFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanEmployerCommonStockFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Employer, Common Stock Fund [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentTypeExtensibleEnumeration_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Investment, Current Value, Type [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentType_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Central Index Key</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EBP002Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">EBP 002</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EBP002Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP002 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EBP002Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">EBP002.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_ParticipantMinimumElectiveContributionPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Participant minimum elective contribution percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_ParticipantMinimumElectiveContributionPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Participant Minimum Elective Contribution Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_ParticipantMinimumElectiveContributionPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Participant minimum elective contribution percentage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_ParticipantLoansReceivableMaximumBalanceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Participant Loans Receivable Maximum Balance Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_ParticipantLoansReceivableMaximumBalanceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Participant Loans maximum balance amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_ParticipantLoansReceivableMaximumBalanceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum loan amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EbpSubsequentEventTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Subsequent Event [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Accounting Policy [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EbpSubsequentEventAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Subsequent Event [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanBasisOfAccountingPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Basis of Accounting [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanBasisOfAccountingPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Basis of Presentation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Current Fiscal Year End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_ParticipantsLoansMaximumLoanBalanceAsPercentageOfAccountBalance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Participants Loans Maximum Loan Balance as Percentage of Account Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_ParticipantsLoansMaximumLoanBalanceAsPercentageOfAccountBalance_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Participants loans maximum loan balance as percentage of account balance.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_ParticipantsLoansMaximumLoanBalanceAsPercentageOfAccountBalance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum loan amount, percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Description of Plan [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanReconciliationToForm5500ChangeInNetAssetAvailableForBenefitCurrentPeriodDecreaseForContractValueToCurrentValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee Benefit Plan Reconciliation To Form 5500 Change In Net Asset Available For Benefit Current Period Decrease For Contract Value To Current Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanReconciliationToForm5500ChangeInNetAssetAvailableForBenefitCurrentPeriodDecreaseForContractValueToCurrentValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Employee benefit plan reconciliation to Form 5500 change in net asset available for benefit current period decrease for contract value to current value.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanReconciliationToForm5500ChangeInNetAssetAvailableForBenefitCurrentPeriodDecreaseForContractValueToCurrentValue_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Adjustment from contract value to fair value for fully benefit-responsive investment contracts at December 31, 2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500PaymentToParticipantIncreaseForDeemedDistributionCurrentPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deemed distributions of participant loans at end of the year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500PaymentToParticipantIncreaseForDeemedDistributionCurrentPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Reconciliation to Form 5500, Payment to Participant, Current Period, Increase from Deemed Distribution</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500PaymentToParticipantIncreaseForDeemedDistributionCurrentPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Deemed distributions of participant loans at end of the year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500PaymentToParticipantIncreaseForDeemedDistributionCurrentPeriod_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Deemed distributions of participant loans at end of the year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForInterestAndDividendIncomeOnInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends and interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForInterestAndDividendIncomeOnInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForInterestAndDividendIncomeOnInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetAssetAvailableForBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Form 5500 Caption, Net Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetAssetAvailableForBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net assets available for benefits as reported in the Form 5500</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetAssetAvailableForBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net assets available for benefits as reported in the Form 5500</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Minimum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related-Party and Party-in-Interest Transactions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Related Party and Party-in-Interest Transactions [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncrease_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Change in Net Asset Available for Benefit, Increase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncrease_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Net Additions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 3</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Inputs, Level 3 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForContribution_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Change in Net Asset Available for Benefit, Increase from Contribution</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForContribution_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Contributions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAssetHeldForInvestmentInvestmentExcludingPlanInterestInMasterTrustParticipationStatusExtensibleEnumeration_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500LineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Reconciliation of Financial Statement to Form 5500 [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanOtherLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Other Liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanOtherLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentInformationLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Information [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measured at Net Asset Value Per Share [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Asset Value (NAV) Practical Expedient</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanStatementOfNetAssetAvailableForBenefitAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Statement of Net Asset Available for Benefit [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_VanguardTrustsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vanguard Trusts</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_VanguardTrustsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vanguard Trusts [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_VanguardTrustsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Vanguard Trusts [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForParticipantContributionExcludingRollover_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Excluding Rollover</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForParticipantContributionExcludingRollover_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Participant deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel12And3Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel12And3Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 1, Level 2, and Level 3</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanInvestmentsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee Benefit Plan Investments [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanInvestmentsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Employee benefit plan investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanTaxDeterminationLetterDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Tax Determination Letter, Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanTaxDeterminationLetterDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tax determination letter, date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanFullyBenefitResponsiveInvestmentContractTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Fully Benefit-Responsive Investment Contract [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanFullyBenefitResponsiveInvestmentContractTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment Strategy</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Related Party and Party-in-Interest Transactions [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_ParticipantMaximumElectiveContributionPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Participant maximum elective contribution percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_ParticipantMaximumElectiveContributionPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Participant Maximum Elective Contribution Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_ParticipantMaximumElectiveContributionPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Participant maximum elective contribution percentage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investments at Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Investments at fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanUseOfEstimatePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Use of Estimate [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanUseOfEstimatePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Use of Estimates</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanNumberOfOutstandingLoansAvailable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee Benefit Plan Number Of Outstanding Loans Available</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanNumberOfOutstandingLoansAvailable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Employee benefit plan number of outstanding loans available.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanNumberOfOutstandingLoansAvailable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of outstanding loans available</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MutualFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mutual Fund [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MutualFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mutual Funds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanIncreasedCatch-UpContributionLimitAvailable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee Benefit Plan Increased Catch-up Contribution Limit Available</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanIncreasedCatch-UpContributionLimitAvailable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Employee benefit plan increased catch-up contribution limit available.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanIncreasedCatch-UpContributionLimitAvailable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Increased catch-up contribution limit available</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_MaximumPercentageOfParticipantContributionMatched_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum percentage of participant contribution matched</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_MaximumPercentageOfParticipantContributionMatched_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Maximum Percentage Of Participant Contribution Matched</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_MaximumPercentageOfParticipantContributionMatched_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Maximum percentage of participant contribution matched.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanSummaryOfAccountingPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Summary of Accounting Policy [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanSummaryOfAccountingPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Significant Accounting Policies</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Measurements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Investment, Fair Value and NAV [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500PaymentToParticipantDecreaseForDeemedDistributionPriorPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deemed distributions of participant loans at the beginning of the year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500PaymentToParticipantDecreaseForDeemedDistributionPriorPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Reconciliation to Form 5500, Payment to Participant, Prior Period, Decrease from Deemed Distribution</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_DefinedContributionPlanAutomaticContributionPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Defined Contribution Plan Automatic Contribution Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_DefinedContributionPlanAutomaticContributionPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Defined contribution plan automatic contribution percentage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_DefinedContributionPlanAutomaticContributionPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Defined contribution plan automatic contribution percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Description of Plan and Accounting Change [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500TableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Net Assets Available for Benefits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500TableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Reconciliation of Financial Statement to Form 5500 [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAssetHeldForInvestmentParticipantLoanAfterDeemedDistribution_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAssetHeldForInvestmentParticipantLoanAfterDeemedDistribution_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Employee benefit plan, participant loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanStatementOfChangeInNetAssetAvailableForBenefitLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Statement of Change in Net Asset Available for Benefit [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statistical Measurement [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanInvestmentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee Benefit Plan Investments [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanInvestmentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Employee benefit plan investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanInvestmentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipant_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Note Receivable from Participant</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipant_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Notes receivable from participants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Period End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Hierarchy and NAV [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanTaxDeterminationLetterObtained_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Tax Determination Letter, Obtained [true false]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanTaxDeterminationLetterObtained_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tax determination letter, obtained</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Related Party and Party-in-Interest Transactions [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanPlanTerminationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Plan Termination</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanPlanTerminationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Plan Termination [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanSubsequentEventTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanSubsequentEventTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Subsequent Event [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Assets Held at End of Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee Benefit Plan Schedule Of Asset Held For Investment [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Employee Benefit Plan Schedule Of Asset Held For Investment [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CoverAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cover [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeCategorizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanNetAssetAvailableForBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net assets available for benefits as reported in the financial statements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanNetAssetAvailableForBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Net Asset Available for Benefit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanNetAssetAvailableForBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Assets Available for Benefits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanNetAssetAvailableForBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">End of Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanNetAssetAvailableForBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning of Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Investment, Fair Value and NAV [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Plan Investment Assets Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanNetAssetAvailableForBenefitAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Net Asset Available for Benefit [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanNetAssetAvailableForBenefitAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Assets Available for Benefits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EBPPlanTerminationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Plan Termination [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EBPPlanTerminationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">EBP, Plan Termination.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Schedule of Asset Held for Investment [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanParticipantsAge_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee Benefit Plan, Participants Age</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanParticipantsAge_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Employee benefit plan, participants age.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanParticipantsAge_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Participants turning age</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAssetHeldForInvestmentInvestmentExcludingPlanInterestInMasterTrustCurrentValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Employee benefit plan, asset held for investment, investment, excluding plan interest in master trust, current value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAssetHeldForInvestmentInvestmentExcludingPlanInterestInMasterTrustCurrentValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Note Receivable from Participant [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Notes Receivable from Participants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanMinimumParticipantsFICAWages_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee Benefit Plan, Minimum Participants FICA wages</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanMinimumParticipantsFICAWages_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Employee benefit plan, minimum participants FICA wages.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanMinimumParticipantsFICAWages_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Participants, FICA wages</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Schedule of Asset Held for Investment [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Assets Held at End of Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanFullyBenefitResponsiveInvestmentContractAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Fully Benefit-Responsive Investment Contract [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanStatementOfNetAssetAvailableForBenefitTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Statement of Net Asset Available for Benefit [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalYearFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Fiscal Year Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecreaseForGainLossOnInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecreaseForGainLossOnInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecreaseForGainLossOnInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net appreciation in fair value of investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanStatementOfChangeInNetAssetAvailableForBenefitTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Statement of Change in Net Asset Available for Benefit [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_JPMCBLargeCapGrowthFundClassCF-EMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">JPMCB Large Cap Growth Fund; Class CF-E [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_JPMCBLargeCapGrowthFundClassCF-EMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">JPMCB Large Cap Growth Fund; Class CF-E.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_JPMCBLargeCapGrowthFundClassCF-EMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">JPMCB Large Cap Growth Fund; Class CF-E</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Asset</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500NetAssetAvailableForBenefitContractValueToCurrentValueAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustment from contract value to fair value for fully benefit-responsive investment contracts</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500NetAssetAvailableForBenefitContractValueToCurrentValueAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Reconciliation to Form 5500, Net Asset Available for Benefit, Contract Value to Current Value Adjustment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500NetAssetAvailableForBenefitContractValueToCurrentValueAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Adjustment from contract value to fair value for fully benefit-responsive investment contracts at December 31, 2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanFullyBenefitResponsiveInvestmentContractLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Fully Benefit-Responsive Investment Contract [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanPlanNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Employee Benefit Plan, Plan Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanPlanNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Plan Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Investment, Fair Value and NAV [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentInformationTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Information [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_LegalEntityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Legal Entity [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500NetAssetAvailableForBenefitDeemedDistribution_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deemed distributions of participant loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500NetAssetAvailableForBenefitDeemedDistribution_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Reconciliation to Form 5500, Net Asset Available for Benefit, Deemed Distribution</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500NetAssetAvailableForBenefitDeemedDistribution_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Deemed distributions of participant loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAssetAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Asset [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAssetAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecreaseForIncomeLossOnInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecreaseForIncomeLossOnInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Investment Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanSyntheticInvestmentContractMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Synthetic Investment Contract [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanSyntheticInvestmentContractMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SYNs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Investment, Fair Value and NAV [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForParticipantContributionRollover_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Rollover</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForParticipantContributionRollover_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Rollovers</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EBPPlanTerminationTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Plan Termination [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EBPPlanTerminationTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">EBP, Plan Termination.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAssetHeldForInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Employee benefit plan, asset held for investment, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAssetHeldForInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Asset Held for Investment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_ParticipantLoansReceivableMinimumBalanceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Participant Loans Receivable Minimum Balance Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_ParticipantLoansReceivableMinimumBalanceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Participant loans receivable minimum balance amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_ParticipantLoansReceivableMinimumBalanceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum balance required</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_AmountChargedFromParticipantsForAdministrativeExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amount charged from participants for administrative expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_AmountChargedFromParticipantsForAdministrativeExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amount charged from participants per member per year (paid quarterly) for administrative expenses.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EbpSubsequentEventLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Subsequent Event [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Table_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Reconciliation of Financial Statement to Form 5500 [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanTaxStatusTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Tax Status [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanTaxStatusTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tax Status</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Maximum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statistical Measurement [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanStatementOfChangeInNetAssetAvailableForBenefitAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Statement of Change in Net Asset Available for Benefit [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanMaximumTermOfAGeneralPurposeLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum term of a general purpose loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanMaximumTermOfAGeneralPurposeLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee Benefit Plan Maximum Term Of A General Purpose Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanMaximumTermOfAGeneralPurposeLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Employee benefit plan maximum term of a general purpose loan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityRegistrantName_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Registrant Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EBPPlanTerminationLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Plan Termination [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EBPPlanTerminationLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">EBP, Plan Termination.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanParticipantLoanInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Asset Held for Investment, Participant Loan, Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanParticipantLoanInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Employee benefit plan, participant loan, interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500TextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Reconciliation of Financial Statement to Form 5500 [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500TextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reconciliation of Financial Statements to Form 5500</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Abstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Reconciliation of Financial Statement to Form 5500 [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Change in Net Asset Available for Benefit, Decrease</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Deductions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Inputs, Level 1 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 1</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Tax Identification Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EBPChangeInNetAssetAvailableForBenefitOtherIncrease_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other additions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EBPChangeInNetAssetAvailableForBenefitOtherIncrease_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Change in Net Asset Available for Benefit, Other Increase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EBPChangeInNetAssetAvailableForBenefitOtherIncrease_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">EBP, Change in Net Asset Available for Benefit, Other Increase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Change in Net Asset Available for Benefit, Increase (Decrease)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net increase as reported in the financial statements, excluding transfers</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Increase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanTaxStatusTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Tax Status [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustContractValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Investment, Excluding Plan Interest in Master Trust, Contract Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustContractValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investments at contract value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAssetHeldForInvestmentPartyInInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Employee Benefit Plan, Asset Held for Investment, Party-in-Interest [true false]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAssetHeldForInvestmentPartyInInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">EBP, Asset Held for Investment, Party-in-Interest [true false]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanLoanOriginationFee_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loan origination fee</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanLoanOriginationFee_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee Benefit Plan Loan Origination Fee</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_EmployeeBenefitPlanLoanOriginationFee_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Employee benefit plan loan origination fee.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_TheVanguardGroupMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">The Vanguard Group [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_IGTJennisonIntermediateGovCreditFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">IGT Jennison Intermediate Gov/Credit Fund [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_IGTJennisonIntermediateGovCreditFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">IGT jennison intermediate gov/credit fund.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_NorthernTrustMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Northern trust.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_IGTLoomisSaylesCoreFixedIncomeFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">IGT loomis sayles core fixed income fund.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_DFAInvestment95081222Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">DFA Investment 95081222.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_IGTInvescoShortTermBondFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">IGT Invesco Short Term Bond Fund [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_ConocoPhillipsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">ConocoPhillips [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_DFAInvestment95081222Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">DFA Investment 95081222 [Member</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_NorthernTrustMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Northern Trust [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_TheVanguardGroupMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The vanguard group.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_IGTInvescoShortTermBondFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">IGT invesco short-term bond fund.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_ConocoPhillipsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ConocoPhillips [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_IGTPIMCOCoreFixedIncomeFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">IGT PIMCO Core Fixed Income Fund [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_IGTDodgeCoxCoreFixedIncomeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">IGT Dodge &amp; Cox Core Fixed Income [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_Phillips66Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Phillips 66 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_IGTLoomisSaylesIntermediateFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">IGT loomis sayles intermediate fund.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_IGTInvescoCoreFixedIncomeFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">IGT Invesco Core Fixed Income Fund [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_IGTPIMCOCoreFixedIncomeFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">IGT PIMCO core fixed income fund.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_IGTPIMCOIntermediateGovCreditFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">IGT PIMCO Intermediate Gov/Credit Fund [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_VanguardExplorerMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Vanguard Explorer.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_IGTInvescoIntermediateGovCreditFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">IGT Invesco Intermediate Gov/Credit Fund [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_MultipleAssetWrapsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Multiple asset wraps.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_GoldmanSachsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Goldman Sachs [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_IGTLoomisSaylesIntermediateFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">IGT Loomis Sayles Intermediate Fund [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_IGTInvescoIntermediateGovCreditFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">IGT invesco intermediate gov/credit fund.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_IGTLoomisSaylesCoreFixedIncomeFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">IGT Loomis Sayles Core Fixed Income Fund [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_IGTPIMCOIntermediateGovCreditFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">IGT PIMCO intermediate gov/credit fund.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_VanguardExplorerMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vanguard Explorer [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_Phillips66Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Phillips 66.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_GoldmanSachsCoreMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Goldman sachs core.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_MultipleAssetWrapsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Multiple Asset Wraps [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_GoldmanSachsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Goldman sachs.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_GoldmanSachsCoreMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Goldman Sachs Core [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_IGTDodgeCoxCoreFixedIncomeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">IGT dodge &amp; cox core fixed income.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="psx_IGTInvescoCoreFixedIncomeFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">IGT invesco core fixed income fund.</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="psx_EmployeeBenefitPlanInvestmentsLineItems" xlink:to="psx_EmployeeBenefitPlanInvestmentsLineItems_lbl"/>
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          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel2Member" xlink:to="us-gaap_FairValueInputsLevel2Member_lbl"/>
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  <xsd:element id="psx_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTextBlock" name="EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="psx_GoldmanSachsMember" name="GoldmanSachsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="psx_GoldmanSachsCoreMember" name="GoldmanSachsCoreMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="psx_IGTPIMCOCoreFixedIncomeFundMember" name="IGTPIMCOCoreFixedIncomeFundMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="psx_EmployeeBenefitPlanIncreasedCatch-UpContributionLimitAvailable" name="EmployeeBenefitPlanIncreasedCatch-UpContributionLimitAvailable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="psx_ParticipantMinimumElectiveContributionPercentage" name="ParticipantMinimumElectiveContributionPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="psx_ParticipantLoansReceivableMaximumBalanceAmount" name="ParticipantLoansReceivableMaximumBalanceAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="psx_IGTInvescoCoreFixedIncomeFundMember" name="IGTInvescoCoreFixedIncomeFundMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="psx_EmployeeBenefitPlanNumberOfOutstandingLoansAvailable" name="EmployeeBenefitPlanNumberOfOutstandingLoansAvailable" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="psx_IGTLoomisSaylesIntermediateFundMember" name="IGTLoomisSaylesIntermediateFundMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="psx_ParticipantMaximumElectiveContributionPercentage" name="ParticipantMaximumElectiveContributionPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="psx_EmployeeBenefitPlanMinimumParticipantsFICAWages" name="EmployeeBenefitPlanMinimumParticipantsFICAWages" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="psx_IGTJennisonIntermediateGovCreditFundMember" name="IGTJennisonIntermediateGovCreditFundMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="psx_EBPPlanTerminationLineItems" name="EBPPlanTerminationLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="psx_EBPPlanTerminationTable" name="EBPPlanTerminationTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="psx_EmployeeBenefitPlanInvestmentsTextBlock" name="EmployeeBenefitPlanInvestmentsTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="psx_EmployeeBenefitPlanReconciliationToForm5500ChangeInNetAssetAvailableForBenefitPriorPeriodIncreaseForContractValueToCurrentValue" name="EmployeeBenefitPlanReconciliationToForm5500ChangeInNetAssetAvailableForBenefitPriorPeriodIncreaseForContractValueToCurrentValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="psx_EmployeeBenefitPlanMaximumTermOfAHomeLoan" name="EmployeeBenefitPlanMaximumTermOfAHomeLoan" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="psx_VanguardTrustsMember" name="VanguardTrustsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="psx_ParticipantsLoansMaximumLoanBalanceAsPercentageOfAccountBalance" name="ParticipantsLoansMaximumLoanBalanceAsPercentageOfAccountBalance" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="psx_EmployeeBenefitPlanMaximumTermOfAGeneralPurposeLoan" name="EmployeeBenefitPlanMaximumTermOfAGeneralPurposeLoan" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
</xsd:schema>
