3.6.0.2 html 602 443 1 true 186 0 false 4 false false R1.htm 0001000 - Document - Document and Entity Information Sheet http://williamslp.com/role/DocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 1001000 - Statement - Consolidated Statement of Comprehensive Income (Loss) Sheet http://williamslp.com/role/ConsolidatedStatementOfComprehensiveIncomeLoss Consolidated Statement of Comprehensive Income (Loss) Statements 2 false false R3.htm 1002000 - Statement - Consolidated Balance Sheet Sheet http://williamslp.com/role/ConsolidatedBalanceSheet Consolidated Balance Sheet Statements 3 false false R4.htm 1002501 - Statement - Consolidated Balance Sheet (Parenthetical) Sheet http://williamslp.com/role/ConsolidatedBalanceSheetParenthetical Consolidated Balance Sheet (Parenthetical) Statements 4 false false R5.htm 1003000 - Statement - Consolidated Statement of Changes in Equity Sheet http://williamslp.com/role/ConsolidatedStatementOfChangesInEquity Consolidated Statement of Changes in Equity Statements 5 false false R6.htm 1004000 - Statement - Consolidated Statement of Cash Flows Sheet http://williamslp.com/role/ConsolidatedStatementOfCashFlows Consolidated Statement of Cash Flows Statements 6 false false R7.htm 2101100 - Disclosure - General, Description of Business, Basis of Presentation, and Summary of Significant Accounting Policies Sheet http://williamslp.com/role/GeneralDescriptionOfBusinessBasisOfPresentationAndSummaryOfSignificantAccountingPolicies General, Description of Business, Basis of Presentation, and Summary of Significant Accounting Policies Notes 7 false false R8.htm 2102100 - Disclosure - Acquisitions Sheet http://williamslp.com/role/Acquisitions Acquisitions Notes 8 false false R9.htm 2103100 - Disclosure - Divestiture Sheet http://williamslp.com/role/Divestiture Divestiture Notes 9 false false R10.htm 2105100 - Disclosure - Variable Interest Entities Sheet http://williamslp.com/role/VariableInterestEntities Variable Interest Entities Notes 10 false false R11.htm 2106100 - Disclosure - Allocation of Net Income (Loss) and Distributions Sheet http://williamslp.com/role/AllocationOfNetIncomeLossAndDistributions Allocation of Net Income (Loss) and Distributions Notes 11 false false R12.htm 2107100 - Disclosure - Related Party Transactions Sheet http://williamslp.com/role/RelatedPartyTransactions Related Party Transactions Notes 12 false false R13.htm 2108100 - Disclosure - Investing Activities Sheet http://williamslp.com/role/InvestingActivities Investing Activities Notes 13 false false R14.htm 2109100 - Disclosure - Other Income and Expenses Sheet http://williamslp.com/role/OtherIncomeAndExpenses Other Income and Expenses Notes 14 false false R15.htm 2110100 - Disclosure - Provision (Benefit) for Income Taxes Sheet http://williamslp.com/role/ProvisionBenefitForIncomeTaxes Provision (Benefit) for Income Taxes Notes 15 false false R16.htm 2111100 - Disclosure - Benefit Plans Sheet http://williamslp.com/role/BenefitPlans Benefit Plans Notes 16 false false R17.htm 2113100 - Disclosure - Property, Plant and Equipment Sheet http://williamslp.com/role/PropertyPlantAndEquipment Property, Plant and Equipment Notes 17 false false R18.htm 2116100 - Disclosure - Goodwill and Other Intangible Assets Sheet http://williamslp.com/role/GoodwillAndOtherIntangibleAssets Goodwill and Other Intangible Assets Notes 18 false false R19.htm 2117100 - Disclosure - Other Accrued Liabilities Other Accrued Liabilities (Notes) Notes http://williamslp.com/role/OtherAccruedLiabilitiesOtherAccruedLiabilitiesNotes Other Accrued Liabilities Other Accrued Liabilities (Notes) Notes 19 false false R20.htm 2118100 - Disclosure - Debt, Banking Arrangements, and Leases Sheet http://williamslp.com/role/DebtBankingArrangementsAndLeases Debt, Banking Arrangements, and Leases Notes 20 false false R21.htm 2119100 - Disclosure - Partners' Capital Sheet http://williamslp.com/role/PartnersCapital Partners' Capital Notes 21 false false R22.htm 2120100 - Disclosure - Equity-Based Compensation Sheet http://williamslp.com/role/EquityBasedCompensation Equity-Based Compensation Notes 22 false false R23.htm 2122100 - Disclosure - Fair Value Measurements, Guarantees, and Concentration of Credit Risk Sheet http://williamslp.com/role/FairValueMeasurementsGuaranteesAndConcentrationOfCreditRisk Fair Value Measurements, Guarantees, and Concentration of Credit Risk Notes 23 false false R24.htm 2123100 - Disclosure - Contingent Liabilities and Commitments Sheet http://williamslp.com/role/ContingentLiabilitiesAndCommitments Contingent Liabilities and Commitments Notes 24 false false R25.htm 2124100 - Disclosure - Segment Disclosures Sheet http://williamslp.com/role/SegmentDisclosures Segment Disclosures Notes 25 false false R26.htm 2201201 - Disclosure - General, Description of Business, Basis of Presentation, and Summary of Significant Accounting Policies (Policies) Sheet http://williamslp.com/role/GeneralDescriptionOfBusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies General, Description of Business, Basis of Presentation, and Summary of Significant Accounting Policies (Policies) Policies http://williamslp.com/role/GeneralDescriptionOfBusinessBasisOfPresentationAndSummaryOfSignificantAccountingPolicies 26 false false R27.htm 2301302 - Disclosure - General, Description of Business, Basis of Presentation, and Summary of Significant Accounting Policies (Tables) Sheet http://williamslp.com/role/GeneralDescriptionOfBusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTables General, Description of Business, Basis of Presentation, and Summary of Significant Accounting Policies (Tables) Tables http://williamslp.com/role/GeneralDescriptionOfBusinessBasisOfPresentationAndSummaryOfSignificantAccountingPolicies 27 false false R28.htm 2302301 - Disclosure - Acquisitions (Tables) Sheet http://williamslp.com/role/AcquisitionsTables Acquisitions (Tables) Tables http://williamslp.com/role/Acquisitions 28 false false R29.htm 2303301 - Disclosure - Divestiture (Tables) Sheet http://williamslp.com/role/DivestitureTables Divestiture (Tables) Tables http://williamslp.com/role/Divestiture 29 false false R30.htm 2305301 - Disclosure - Variable Interest Entities (Tables) Sheet http://williamslp.com/role/VariableInterestEntitiesTables Variable Interest Entities (Tables) Tables http://williamslp.com/role/VariableInterestEntities 30 false false R31.htm 2306301 - Disclosure - Allocation of Net Income (Loss) and Distributions (Tables) Sheet http://williamslp.com/role/AllocationOfNetIncomeLossAndDistributionsTables Allocation of Net Income (Loss) and Distributions (Tables) Tables http://williamslp.com/role/AllocationOfNetIncomeLossAndDistributions 31 false false R32.htm 2307301 - Disclosure - Related Party Transactions (Tables) Sheet http://williamslp.com/role/RelatedPartyTransactionsTables Related Party Transactions (Tables) Tables http://williamslp.com/role/RelatedPartyTransactions 32 false false R33.htm 2308301 - Disclosure - Investing Activities (Tables) Sheet http://williamslp.com/role/InvestingActivitiesTables Investing Activities (Tables) Tables http://williamslp.com/role/InvestingActivities 33 false false R34.htm 2309301 - Disclosure - Other Income and Expenses (Tables) Sheet http://williamslp.com/role/OtherIncomeAndExpensesTables Other Income and Expenses (Tables) Tables http://williamslp.com/role/OtherIncomeAndExpenses 34 false false R35.htm 2310301 - Disclosure - Provision (Benefit) for Income Taxes (Tables) Sheet http://williamslp.com/role/ProvisionBenefitForIncomeTaxesTables Provision (Benefit) for Income Taxes (Tables) Tables http://williamslp.com/role/ProvisionBenefitForIncomeTaxes 35 false false R36.htm 2313301 - Disclosure - Property, Plant and Equipment (Tables) Sheet http://williamslp.com/role/PropertyPlantAndEquipmentTables Property, Plant and Equipment (Tables) Tables http://williamslp.com/role/PropertyPlantAndEquipment 36 false false R37.htm 2316301 - Disclosure - Goodwill and Other Intangible Assets (Tables) Sheet http://williamslp.com/role/GoodwillAndOtherIntangibleAssetsTables Goodwill and Other Intangible Assets (Tables) Tables http://williamslp.com/role/GoodwillAndOtherIntangibleAssets 37 false false R38.htm 2317301 - Disclosure - Other Accrued Liabilities Other Accrued Liabilities (Tables) Sheet http://williamslp.com/role/OtherAccruedLiabilitiesOtherAccruedLiabilitiesTables Other Accrued Liabilities Other Accrued Liabilities (Tables) Tables http://williamslp.com/role/OtherAccruedLiabilitiesOtherAccruedLiabilitiesNotes 38 false false R39.htm 2318301 - Disclosure - Debt, Banking Arrangements, and Leases (Tables) Sheet http://williamslp.com/role/DebtBankingArrangementsAndLeasesTables Debt, Banking Arrangements, and Leases (Tables) Tables http://williamslp.com/role/DebtBankingArrangementsAndLeases 39 false false R40.htm 2319301 - Disclosure - Partners' Capital (Tables) Sheet http://williamslp.com/role/PartnersCapitalTables Partners' Capital (Tables) Tables http://williamslp.com/role/PartnersCapital 40 false false R41.htm 2320301 - Disclosure - Equity-Based Compensation (Tables) Sheet http://williamslp.com/role/EquityBasedCompensationTables Equity-Based Compensation (Tables) Tables http://williamslp.com/role/EquityBasedCompensation 41 false false R42.htm 2322301 - Disclosure - Fair Value Measurements Guarantees and Concentration of Credit Risk (Tables) Sheet http://williamslp.com/role/FairValueMeasurementsGuaranteesAndConcentrationOfCreditRiskTables Fair Value Measurements Guarantees and Concentration of Credit Risk (Tables) Tables 42 false false R43.htm 2324301 - Disclosure - Segment Disclosures (Tables) Sheet http://williamslp.com/role/SegmentDisclosuresTables Segment Disclosures (Tables) Tables http://williamslp.com/role/SegmentDisclosures 43 false false R44.htm 2401403 - Disclosure - General, Description of Business, Basis of Presentation, and Summary of Significant Accounting Policies (Details) Sheet http://williamslp.com/role/GeneralDescriptionOfBusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesDetails General, Description of Business, Basis of Presentation, and Summary of Significant Accounting Policies (Details) Details http://williamslp.com/role/GeneralDescriptionOfBusinessBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTables 44 false false R45.htm 2402402 - Disclosure - Acquisitions (Details) Sheet http://williamslp.com/role/AcquisitionsDetails Acquisitions (Details) Details http://williamslp.com/role/AcquisitionsTables 45 false false R46.htm 2403402 - Disclosure - Divestiture (Details) Sheet http://williamslp.com/role/DivestitureDetails Divestiture (Details) Details http://williamslp.com/role/DivestitureTables 46 false false R47.htm 2405402 - Disclosure - Variable Interest Entities (Details) Sheet http://williamslp.com/role/VariableInterestEntitiesDetails Variable Interest Entities (Details) Details http://williamslp.com/role/VariableInterestEntitiesTables 47 false false R48.htm 2406402 - Disclosure - Allocation of Net Income (Loss) and Distributions (Details) Sheet http://williamslp.com/role/AllocationOfNetIncomeLossAndDistributionsDetails Allocation of Net Income (Loss) and Distributions (Details) Details http://williamslp.com/role/AllocationOfNetIncomeLossAndDistributionsTables 48 false false R49.htm 2407402 - Disclosure - Related Party Transactions (Details) Sheet http://williamslp.com/role/RelatedPartyTransactionsDetails Related Party Transactions (Details) Details http://williamslp.com/role/RelatedPartyTransactionsTables 49 false false R50.htm 2408402 - Disclosure - Investing Activities (Details) Sheet http://williamslp.com/role/InvestingActivitiesDetails Investing Activities (Details) Details http://williamslp.com/role/InvestingActivitiesTables 50 false false R51.htm 2409402 - Disclosure - Other Income and Expenses (Details) Sheet http://williamslp.com/role/OtherIncomeAndExpensesDetails Other Income and Expenses (Details) Details http://williamslp.com/role/OtherIncomeAndExpensesTables 51 false false R52.htm 2410402 - Disclosure - Provision (Benefit) Table (Details) Sheet http://williamslp.com/role/ProvisionBenefitTableDetails Provision (Benefit) Table (Details) Details http://williamslp.com/role/ProvisionBenefitForIncomeTaxesTables 52 false false R53.htm 2410403 - Disclosure - Reconciliations To Recorded Provision for Income Taxes (Details) Sheet http://williamslp.com/role/ReconciliationsToRecordedProvisionForIncomeTaxesDetails Reconciliations To Recorded Provision for Income Taxes (Details) Details 53 false false R54.htm 2410404 - Disclosure - Provision (Benefit) for Income Taxes (Details) Sheet http://williamslp.com/role/ProvisionBenefitForIncomeTaxesDetails Provision (Benefit) for Income Taxes (Details) Details http://williamslp.com/role/ProvisionBenefitForIncomeTaxesTables 54 false false R55.htm 2411401 - Disclosure - Benefit Plans (Details) Sheet http://williamslp.com/role/BenefitPlansDetails Benefit Plans (Details) Details http://williamslp.com/role/BenefitPlans 55 false false R56.htm 2413402 - Disclosure - Property, Plant and Equipment (Details PPE) Sheet http://williamslp.com/role/PropertyPlantAndEquipmentDetailsPpe Property, Plant and Equipment (Details PPE) Details http://williamslp.com/role/PropertyPlantAndEquipmentTables 56 false false R57.htm 2413403 - Disclosure - Property, Plant, and Equipment (Details ARO) Sheet http://williamslp.com/role/PropertyPlantAndEquipmentDetailsAro Property, Plant, and Equipment (Details ARO) Details 57 false false R58.htm 2416402 - Disclosure - Goodwill (Details) Sheet http://williamslp.com/role/GoodwillDetails Goodwill (Details) Details http://williamslp.com/role/GoodwillAndOtherIntangibleAssetsTables 58 false false R59.htm 2416403 - Disclosure - Other Intangible Assets (Details) Sheet http://williamslp.com/role/OtherIntangibleAssetsDetails Other Intangible Assets (Details) Details 59 false false R60.htm 2417402 - Disclosure - Other Accrued Liabilities (Details) Sheet http://williamslp.com/role/OtherAccruedLiabilitiesDetails Other Accrued Liabilities (Details) Details http://williamslp.com/role/OtherAccruedLiabilitiesOtherAccruedLiabilitiesTables 60 false false R61.htm 2417403 - Disclosure - Other Accrued Liabilities Other Accrued Liabilities Narrative (Details) Sheet http://williamslp.com/role/OtherAccruedLiabilitiesOtherAccruedLiabilitiesNarrativeDetails Other Accrued Liabilities Other Accrued Liabilities Narrative (Details) Details http://williamslp.com/role/OtherAccruedLiabilitiesOtherAccruedLiabilitiesTables 61 false false R62.htm 2418402 - Disclosure - Long-Term Debt (Details) Sheet http://williamslp.com/role/LongTermDebtDetails Long-Term Debt (Details) Details 62 false false R63.htm 2418403 - Disclosure - Long-Term Debt Maturities (Details) Sheet http://williamslp.com/role/LongTermDebtMaturitiesDetails Long-Term Debt Maturities (Details) Details 63 false false R64.htm 2418404 - Disclosure - Long-Term Debt Issuances and Retirements (Details) Sheet http://williamslp.com/role/LongTermDebtIssuancesAndRetirementsDetails Long-Term Debt Issuances and Retirements (Details) Details 64 false false R65.htm 2418405 - Disclosure - Credit Facility and Commercial Paper (Details) Sheet http://williamslp.com/role/CreditFacilityAndCommercialPaperDetails Credit Facility and Commercial Paper (Details) Details 65 false false R66.htm 2418406 - Disclosure - Cash Payments For Interest (Net of Amounts Capitalized) (Details) Sheet http://williamslp.com/role/CashPaymentsForInterestNetOfAmountsCapitalizedDetails Cash Payments For Interest (Net of Amounts Capitalized) (Details) Details 66 false false R67.htm 2418407 - Disclosure - Leases-Lessee (Details) Sheet http://williamslp.com/role/LeasesLesseeDetails Leases-Lessee (Details) Details 67 false false R68.htm 2419402 - Disclosure - Partners' Capital (Details Textuals) Sheet http://williamslp.com/role/PartnersCapitalDetailsTextuals Partners' Capital (Details Textuals) Details http://williamslp.com/role/PartnersCapitalTables 68 false false R69.htm 2419403 - Disclosure - Partners' Capital Incentive Distributions Quarterly Target Amount (Details) Sheet http://williamslp.com/role/PartnersCapitalIncentiveDistributionsQuarterlyTargetAmountDetails Partners' Capital Incentive Distributions Quarterly Target Amount (Details) Details 69 false false R70.htm 2420402 - Disclosure - Equity-Based Compensation (Details) Sheet http://williamslp.com/role/EquityBasedCompensationDetails Equity-Based Compensation (Details) Details http://williamslp.com/role/EquityBasedCompensationTables 70 false false R71.htm 2422402 - Disclosure - Fair Value Measurements Recurring Measurements and Additional (Details) Sheet http://williamslp.com/role/FairValueMeasurementsRecurringMeasurementsAndAdditionalDetails Fair Value Measurements Recurring Measurements and Additional (Details) Details 71 false false R72.htm 2422403 - Disclosure - Fair Value Measurements Nonrecurring Measurements (Details) Sheet http://williamslp.com/role/FairValueMeasurementsNonrecurringMeasurementsDetails Fair Value Measurements Nonrecurring Measurements (Details) Details 72 false false R73.htm 2422404 - Disclosure - Fair Value Measurements Concentration of Credit Risk (Details) Sheet http://williamslp.com/role/FairValueMeasurementsConcentrationOfCreditRiskDetails Fair Value Measurements Concentration of Credit Risk (Details) Details 73 false false R74.htm 2423401 - Disclosure - Contingent Liabilities and Commitments (Details) Sheet http://williamslp.com/role/ContingentLiabilitiesAndCommitmentsDetails Contingent Liabilities and Commitments (Details) Details http://williamslp.com/role/ContingentLiabilitiesAndCommitments 74 false false R75.htm 2424402 - Disclosure - Segment Disclosures Geographic Information (Details) Sheet http://williamslp.com/role/SegmentDisclosuresGeographicInformationDetails Segment Disclosures Geographic Information (Details) Details 75 false false R76.htm 2424403 - Disclosure - Segment Disclosures Recon from Segment to Consolidated - Revenues (Details) Sheet http://williamslp.com/role/SegmentDisclosuresReconFromSegmentToConsolidatedRevenuesDetails Segment Disclosures Recon from Segment to Consolidated - Revenues (Details) Details 76 false false R77.htm 2424404 - Disclosure - Segment Disclosures Recon from Modified EBITDA to Net Income (Loss) (Details) Sheet http://williamslp.com/role/SegmentDisclosuresReconFromModifiedEbitdaToNetIncomeLossDetails Segment Disclosures Recon from Modified EBITDA to Net Income (Loss) (Details) Details 77 false false R78.htm 2424405 - Disclosure - Segment Disclosures Recon from Segment to Consolidated - Assets and Invesetments (Details) Sheet http://williamslp.com/role/SegmentDisclosuresReconFromSegmentToConsolidatedAssetsAndInvesetmentsDetails Segment Disclosures Recon from Segment to Consolidated - Assets and Invesetments (Details) Details 78 false false All Reports Book All Reports wpz-20161231.xml wpz-20161231.xsd wpz-20161231_cal.xml wpz-20161231_def.xml wpz-20161231_lab.xml wpz-20161231_pre.xml true true