Equity [Abstract] Statement [Table] Statement [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Ferrellgas, L.P. [Member] Ferrellgas L P [Member] FERRELLGAS, L.P. [Member] Statement [Line Items] Statement [Line Items] Partners' Capital Partners' Capital Notes Disclosure [Text Block] Supplemental Financial Statement Information [Abstract] Supplemental Financial Statement Information [Abstract] Propane gas and related products Energy Related Inventory, Propane Gas Energy Related Inventory, Petroleum Energy Related Inventory, Petroleum Appliances, parts and supplies Other Inventory, Net of Reserves Inventories Inventory, Net Debt Disclosure [Abstract] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Derivative Instruments and Hedging Activities Disclosure [Abstract] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other assets, net [Member] Other Assets [Member] Prepaid Expenses and Other Current Assets [Member] Prepaid Expenses and Other Current Assets [Member] Other Current Liabilities [Member] Other Current Liabilities [Member] Other Liabilities [Member] Other Liabilities [Member] Derivative, Gain (Loss) on Derivative, Net Derivative, Gain (Loss) on Derivative, Net Interest Expense, Debt Interest Expense, Debt Derivative Asset, Fair Value of Collateral Derivative Asset, Fair Value of Collateral Derivative Liability, Fair Value of Collateral Derivative Liability, Fair Value of Collateral Related Party Transactions [Abstract] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Public Common Unitholders [Member] Public Common Unitholders [Member] Public Common Unitholders [Member] FCI Trading Corp. [Member] Fci Trading Corp [Member] FCI Trading Corp. [Member] Subsidiary of Common Parent [Member] Subsidiary of Common Parent [Member] Ferrell Propane, Inc [Member] Ferrell Propane Inc [Member] Ferrell Propane, Inc. [Member] James E. Ferrell [Member] Officer [Member] James H. Ballengee [Member] James H. Ballengee [Member] James H. Ballengee [Member] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Limited Partners' Capital Account, Units Outstanding Limited Partners' Capital Account, Units Outstanding Schedule of Capitalization, Long-term Debt [Table] Schedule of Capitalization, Long-term Debt [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Fixed Rate, 8.625%, Due 2020 [Member] Fixed Rate Eight Point Six Two Five Due Two Thousand Twenty [Member] Fixed Rate Eight Point Six Two Five Due Two Thousand Twenty [Member] Interest Rate Swap [Member] Interest Rate Swap [Member] Secured Credit Facility [Member] Secured Debt [Member] Schedule of Capitalization, Long-term Debt [Line Items] Schedule of Capitalization, Long-term Debt [Line Items] Long-term debt Long-term Debt, Excluding Current Maturities Debt interest rate Debt Instrument, Interest Rate, Stated Percentage Debt maturity year Debt maturity year Debt maturity year Short-term borrowings Short-term Debt Debt weighted average interest rate Debt, Weighted Average Interest Rate Statement of Comprehensive Income [Abstract] Net loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Other comprehensive income (loss): Other Comprehensive Income (Loss), Net of Tax [Abstract] Change in value of risk management derivatives Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Reclassification of derivative gains and losses to earnings Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Less: Comprehensive income attributable to noncontrolling interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive income attributable to Ferrellgas Partners, LP Comprehensive Income (Loss), Net of Tax, Attributable to Parent Fair Value Disclosures [Abstract] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Gain (Loss) on Disposition of Property Plant Equipment Gain (Loss) on Disposition of Property Plant Equipment Document And Entity Information [Abstract] Document and Entity Information [Abstract] Ferrellgas Partners Finance Corp. [Member] Ferrellgas Partners Finance Corp [Member] FERRELLGAS PARTNERS FINANCE CORP. [Member] Ferrellgas Finance Corp. [Member] Ferrellgas Finance Corp [Member] FERRELLGAS FINANCE CORP. [Member] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Trading Symbol Trading Symbol Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Current Reporting Status Entity Current Reporting Status Subsequent Events [Abstract] Subsequent Events Subsequent Events [Text Block] Statement of Financial Position [Abstract] Accounts receivable pledged as collateral Pledged Assets Separately Reported, Finance Receivables Pledged as Collateral, at Fair Value Intangible assets accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization General partner unitholder, units outstanding General Partners' Capital Account, Units Outstanding Common stock, par value Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Common stock, shares outstanding Common Stock, Shares, Outstanding Partnership organization and formation [Abstract] Partnership organization and formation [Abstract] Partnership Organization And Formation Nature of Operations [Text Block] Condensed Financial Information of Parent Company Only Disclosure [Abstract] Condensed Financial Statements [Table] Condensed Financial Statements [Table] Condensed Financial Statements, Captions [Line Items] Condensed Financial Statements, Captions [Line Items] Guarantor financial information Condensed Financial Information of Parent Company Only Disclosure [Text Block] Schedule of Condensed Financial Statements [Table] Component of Shipping and Handling Expenses Classified in Statements of Earnings [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Operating Expense [Member] Operating Expense [Member] Depreciation And Amortization Expense [Member] Depreciation And Amortization Expense [Member] Depreciation And Amortization Expense [Member] Equipment Lease Expense [Member] Equipment Lease Expense [Member] Equipment Lease Expense [Member] Shipping and handling expenses Shipping, Handling and Transportation Costs Credit Facility [Domain] Credit Facility [Domain] Jamex Marketing, LLC [Member] Jamex Marketing, LLC [Member] Jamex Marketing, LLC [Member] Limited partner ownership interest Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest Partners' Capital Account, Units, Treasury Units Purchased Partners' Capital Account, Units, Treasury Units Purchased Payments for Repurchase of Common Stock Payments for Repurchase of Common Stock Partners' Capital Account, Units, Period Increase (Decrease) Partners' Capital Account, Units, Period Increase (Decrease) Partners' Capital Account, Units Partners' Capital Account, Units Number of employees Entity Number of Employees Revenue from Related Parties Revenue from Related Parties Related Party Costs Related Party Costs Accounts Receivable, Related Parties Accounts Receivable, Related Parties Accounts Payable, Related Parties Accounts Payable, Related Parties Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Transactions With Related Parties Related Party Transactions Disclosure [Text Block] Fair Value Inputs, Assets, Quantitative Information [Table] Fair Value Inputs, Assets, Quantitative Information [Table] Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Valuation Technique [Axis] Valuation Technique [Axis] Valuation Technique [Domain] Valuation Technique [Domain] Fair Value Inputs, Assets, Quantitative Information [Line Items] Fair Value Inputs, Assets, Quantitative Information [Line Items] Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings Business Combinations [Abstract] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Midstream - Crude Oil Logistics [Member] Midstream - Crude Oil Logistics [Member] Midstream - Crude Oil Logistics [Member] Payments to Acquire Businesses, Gross Payments to Acquire Businesses, Gross Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Business Acquisition Cost Of Acquired Entity Issuance Of Liabilities And Other Costs Business Acquisition Cost Of Acquired Entity Issuance Of Liabilities And Other Costs Business Acquisition Cost Of Acquired Entity Issuance Of Liabilities And Other Costs Business Combination, Consideration Transferred Business Combination, Consideration Transferred Schedule of Distributions Made to Member or Limited Partner [Table] Distributions Made to Limited Partner [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Ferrell Companies [Member] Ferrell Companies [Member] Ferrell Companies [Member] General Partner [Member] General Partner [Member] Distribution Expected To Be Made to Member or Limited Partner [Line Items] Distribution Made to Limited Partner [Line Items] Distribution Made to Limited Partner, Cash Distributions Declared Distribution Made to Limited Partner, Cash Distributions Declared Assets held for disposal [Member] Assets held for disposal [Member] Assets held for disposal [Member] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Vehicles [Member] Vehicles [Member] Assets sold Assets sold Assets sold Long Lived Assets Held-for-sale, Description Long Lived Assets Held-for-sale, Description Assets held in use Reason for Changing Plan to Sell Assets Held-for-sale Maximum term of supply procurement contracts MaximumTermOfSupplyProcurementContracts Maximum Term Of Supply Procurement Contracts Net procurement of fixed priced propane in gallons Net Procurement Of Fixed Priced Propane In Gallons Net Procurement Of Fixed Priced Propane In Gallons Statement of Cash Flows [Abstract] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Payments of Stock Issuance Costs Payments of Stock Issuance Costs Payments for Repurchase of Equity Payments for Repurchase of Equity Segment Reporting [Abstract] Reconciliation of Assets from Segment to Consolidated [Table] Reconciliation of Assets from Segment to Consolidated [Table] Partner Capital Components [Axis] Partner Capital Components [Axis] Partner Capital Components [Domain] Partner Capital Components [Domain] Noncontrolling Interest [Member] Noncontrolling Interest [Member] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Propane and related equipment sales [Member] Propane and related equipment sales [Member] Propane and related equipment sales [Member] Midstream Operations - Water Solutions [Member] Midstream Operations - Water Solutions [Member] Midstream Operations - Water Solutions [Member] Midstream Operations [Member] Midstream Operations [Member] Midstream Operations [Member] Corporate and Other [Member] Corporate and Other [Member] Intersegment Eliminations [Member] Intersegment Eliminations [Member] Subsegments [Axis] Subsegments [Axis] Subsegments [Domain] Subsegments [Domain] Subsegments Consolidation Items [Axis] Subsegments Consolidation Items [Axis] Subsegments Consolidation Items [Domain] Subsegments Consolidation Items [Domain] Segment Reporting, Asset Reconciling Item [Line Items] Segment Reporting, Asset Reconciling Item [Line Items] Assets Assets Long-term Debt, Fair Value Long-term Debt, Fair Value Receivables [Abstract] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Accounts, Notes, Loans and Financing Receivable by Receivable Type [Axis] Receivable Type [Axis] Receivable Type [Domain] Receivable [Domain] Accounts Receivable Securitization [Member] Trade Accounts Receivable [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Collateralized notes payable Notes Payable, Related Parties Proceeds from accounts receivable securitization Proceeds from Accounts Receivable Securitization Available proceeds from additional trade accounts receivable Ability to Receive Additional Trade Accounts Receivable Ability to Receive Additional Trade Accounts Receivable Weighted average interest rate on borrowings under accounts receivable securitization Weighted Average Discount Rate To Value The Retained Interest In The Transferred Receivables Weighted Average Discount Rate To Value The Retained Interest In The Transferred Receivables Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Income Statement Location [Axis] Goodwill [Line Items] Goodwill [Line Items] Goodwill and Intangible Assets Disclosure [Text Block] Goodwill and Intangible Assets Disclosure [Text Block] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] Propane commodity derivatives [Member] Energy Related Derivative [Member] Interest Expense [Member] Interest Expense [Member] Underlying commodity [Axis] Underlying commodity [Axis] Underlying commodity [Axis] Underlying commodity [Domain] Underlying commodity [Domain] [Domain] for Underlying commodity [Axis] Diesel fuel [Member] Diesel fuel [Member] Diesel fuel [Member] Unleaded gasoline [Member] Unleaded gasoline [Member] Unleaded gasoline [Member] Crude Oil [Member] Crude Oil [Member] Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net Reclassification of net gain to earnings during next 12 months Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months Number of barrels of propane covered by cash flow hedges Derivative, Nonmonetary Notional Amount, Volume Additional Collateral, Aggregate Fair Value Additional Collateral, Aggregate Fair Value Derivative amount of credit risk Derivative amount of credit risk Derivative amount of credit risk if counterparties failed to perform contracts Derivative net liability position aggregate fair value Derivative, Net Liability Position, Aggregate Fair Value Collateral already posted Collateral Already Posted, Aggregate Fair Value Gain or loss in earnings related to hedge ineffectiveness Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net Reclassification of gain (loss) to earnings from discontinuance of cash flow hedges Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net Statement [Table] Schedule of Segment Reporting Information, by Segment [Table] Segment Reporting Information Segment Reporting Information [Line Items] Revenues Revenues Costs and Expenses Costs and Expenses Adjusted EBITDA Adjusted EBITDA Adjusted EBITDA Fair Value Measurements Fair Value Disclosures [Text Block] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Propane commodity derivative assets Price Risk Derivative Assets, at Fair Value Interest rate swap assets Interest Rate Derivative Assets, at Fair Value Other Derivatives Not Designated as Hedging Instruments at Fair Value, Net Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value Derivative assets, fair value Derivative Asset, Fair Value, Gross Asset Propane commodity derivative liabilities Price Risk Derivative Liabilities, at Fair Value Interest rate swap liabilities Interest Rate Derivative Liabilities, at Fair Value Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value Derivative liabilities, fair value Derivative Liability, Fair Value, Gross Liability Earnings Per Share [Abstract] Distribution Range [Axis] Distribution Range [Axis] Distribution Range for determining allocation by partner type [Axis] Distribution Range [Domain] Distribution Range [Domain] [Domain] for Distribution Range for determining allocation by partner type [Axis] Upper Range [Member] Upper Range [Member] Upper Range [Member] Middle Range [Member] Middle Range [Member] Middle Range [Member] Lower Range [Member] Lower Range [Member] Lower Range [Member] Statement, Partner Type of Partners' Capital Account [Axis] Partner Type [Axis] Partner Type of Partners' Capital Account, Name [Domain] Partner Type of Partners' Capital Account, Name [Domain] Common Stock [Member] Common Stock [Member] Allocated Distribution Allocated Distribution Allocated Distribution based on range and partner type Earnings Per Share, Basic, Distributed Earnings Per Share, Basic, Distributed Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table Text Block] Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table Text Block] Schedule of fair value assets and liabilities Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Level 3 fair value rollforward Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Statement of Partners' Capital [Abstract] Common Unitholders [Member] Common Unitholders [Member] Common Unitholders [Member] General Partner Unitholder [Member] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Total Ferrellgas Partners, L.P. Partners' Capital (Deficit) [Member] Parent [Member] Increase (Decrease) in Partners' Capital [Roll Forward] Increase (Decrease) in Partners' Capital [Roll Forward] Partners' capital balance (in units) Partners' capital balance Partners' Capital, Including Portion Attributable to Noncontrolling Interest Contributions in connection with non-cash ESOP and stock and unit-based compensation charges Contributions in connection with ESOP and stock-based compensation charges Contributions in connection with ESOP and stock-based compensation charges Partners' Capital Account, Acquisitions Partners' Capital Account, Acquisitions Distributions Partners' Capital Account, Distributions Partners' Capital Account, Treasury Units, Purchased Partners' Capital Account, Treasury Units, Purchased Partners' Capital Account, Units, Unit-based Compensation Partners' Capital Account, Units, Unit-based Compensation Partners' Capital Account, Unit-based Compensation Partners' Capital Account, Unit-based Compensation Other comprehensive income (loss) Partners' capital balance (in units) Partners' capital balance Schedule of Capital Units [Table] Schedule of Capital Units [Table] JEF Capital Management [Member] JEF Capital Management [Member] JEF Capital Management [Member] Ferrell Resources Holdings, Inc. [Member] Ferrell Resources Holdings, Inc. [Member] Ferrell Resources Holdings, Inc. [Member] Ferrellgas Partners [Member] Parent Partners [Member] Parent Partners [Member] Ferrell Companies Beneficial Ownership [Member] Ferrell Companies Beneficial Ownership [Member] Ferrell Companies Beneficial Ownership [Member] includes Ferrell Companies direct ownership of Ferrellgas Partner's common stock and beneficial ownership of common units held by FCI Trading Corp. and Ferrell Propane, Inc. Capital Unit [Line Items] Capital Unit [Line Items] Cash distribution declaration date Distribution Made to Limited Partner, Declaration Date Cash distributions declared per common unit Distribution Made to Limited Partner, Distributions Declared, Per Unit Cash distributions payment date Distribution Made to Limited Partner, Distribution Date General partner ownership interest Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest Contributions from partners Proceeds from Partnership Contribution Non-cash contributions Other Significant Noncash Transaction, Value of Consideration Given Business Combination Disclosure [Text Block] Business Combination Disclosure [Text Block] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Senior Notes [Member] Senior Notes [Member] Debt issuance principal amount Debt Instrument, Face Amount Interest payments Interest Paid Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statement [Table] Reportable Legal Entities [Member] Reportable Legal Entities [Member] Eliminations [Member] Consolidation, Eliminations [Member] Ferrellgas, L.P. (Parent and Co-Issuer) [Member] Parent Company [Member] Ferrellgas Finance Corp. (Co-Issuer) [Member] Co-issuer [Member] Co-issuer [Member] Guarantor Subsidiaries [Member] Guarantor Subsidiaries [Member] Non-Guarantor Subsidiaries [Member] Non-Guarantor Subsidiaries [Member] Condensed Balance Sheet Statements, Captions [Line Items] Condensed Balance Sheet Statements, Captions [Line Items] ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Accounts and notes receivable Receivables, Net, Current Intercompany receivables Intercompany Receivables, Current Intercompany Receivables, Current Inventories Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Total current assets Assets, Current Property, plant and equipment, net Property, Plant and Equipment, Net Goodwill Goodwill Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Intercompany receivables Intercompany Receivables, Noncurrent Intercompany Receivables, Noncurrent Investments in consolidated subsidiaries Equity Method Investments Assets held for sale Assets Held-for-sale, Not Part of Disposal Group Other assets, net Other Assets, Noncurrent Total assets LIABILITIES AND PARTNERS' CAPITAL Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Collateralized note payable Notes Payable, Current Intercompany Payables Intercompany Payables Intercompany Payables Other current liabilities Other Liabilities, Current Total current liabilities Liabilities, Current Other liabilities Other Liabilities, Noncurrent Contingencies and commitments Commitments and Contingencies Partners' capital Partners' Capital [Abstract] Partners' equity Partners' Capital Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Total partners' capital Total liabilities and partners' capital Liabilities and Equity Income Statement [Abstract] Revenues: Revenues [Abstract] Propane and other gas liquids sales Propane Revenue Midstream operations Midstream revenues Midstream revenues relate to industry activities that fall between exploration and production (upstream) and refining and marketing (downstream). Other Other Revenue, Net Total revenues Revenue, Net Costs and expenses: Costs and Expenses [Abstract] Cost of sales - propane and other gas liquids sales Propane Costs Cost of sales - midstream operations Cost of sales - midstream operations Midstream operations relate to industry activities that fall between exploration and production (upstream) and refining and marketing (downstream). Cost of sales - other Other Cost of Operating Revenue Operating expense Other Cost and Expense, Operating Depreciation and amortization expense Depreciation, Depletion and Amortization General and administrative expense General and Administrative Expense Equipment lease expense Operating Leases, Rent Expense Non-cash employee stock ownership plan compensation charge Employee Stock Ownership Plan (ESOP), Compensation Expense Goodwill impairment Goodwill, Impairment Loss Loss on disposal of assets and other Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Operating loss Operating Income (Loss) Interest expense Interest and Debt Expense Other income, net Nonoperating Income (Expense) Loss before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Income tax benefit Income Tax Expense (Benefit) Net Earnings (Loss) Net earnings attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Net earnings attributable to Ferrellgas Partners, L.P. Net Income (Loss) Attributable to Parent Less: General partner's interest in net earnings Net Income (Loss) Allocated to General Partners Common unitholders' interest in net earnings Net Income (Loss) Allocated to Limited Partners Basic and diluted net earnings per common unitholders' interest Net Income (Loss), Per Outstanding Limited Partnership and General Partnership Unit, Basic and Diluted, Net of Tax Cash distributions declared per common unit Distributions Per Limited Partnership Unit Outstanding, Basic Compensation And Benefits [Member] Compensation And Benefits [Member] Compensation and Benefits [Member] Operating expense Operating Expenses General and administrative expense Cash flows provided by (used in) operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net earnings (loss) Reconciliation of net earnings to net cash provided by (used in) operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Non-cash employee stock ownership plan compensation charge Non-cash stock-based compensation charge Share-based Compensation Loss on Disposal of Assets and Asset Impairment Charges Gain (Loss) on Sale of Assets and Asset Impairment Charges Change in fair value of contingent consideration Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability Provision for doubtful accounts Provision for Doubtful Accounts Deferred tax expense Deferred Income Tax Expense (Benefit) Other Other Noncash Income (Expense) Changes in operating assets and liabilities, net of effects from business acquisitions: Increase (Decrease) in Operating Capital [Abstract] Accounts and notes receivable, net of securitization Increase (Decrease) in Accounts and Notes Receivable Inventories Increase (Decrease) in Inventories Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Accounts payable Increase (Decrease) in Accounts Payable Accrued interest expense Increase (Decrease) in Interest Payable, Net Other current liabilities Increase (Decrease) in Other Current Liabilities Other assets and liabilities Increase (Decrease) in Other Noncurrent Liabilities Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities Cash flows provided by (used in) investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Business acquisitions, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Capital expenditures Payments to Acquire Productive Assets Proceeds from sale of assets Proceeds from Sale of Productive Assets Other Payments for (Proceeds from) Other Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Cash flows provided by (used in) financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Distributions Payments of Capital Distribution Proceeds from issuance of long-term debt Proceeds from Issuance of Long-term Debt Payments on long-term debt Repayments of Long-term Debt Net additions to (reductions in) short-term borrowings Proceeds from (Repayments of) Short-term Debt Net additions to collateralized short-term borrowings Proceeds from Other Short-term Debt Cash paid for financing costs Payments of Financing Costs Proceeds from (Payments to) Noncontrolling Interests Proceeds from (Payments to) Noncontrolling Interests Proceeds from Stock Options Exercised Proceeds from Stock Options Exercised Proceeds from Issuance of Common Limited Partners Units Proceeds from Issuance of Common Limited Partners Units Capital contribution Proceeds from Contributed Capital Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate changes on cash Effect of Exchange Rate on Cash and Cash Equivalents Net change in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Net change in cash Cash, Period Increase (Decrease) Cash and cash equivalents - beginning of period Cash and cash equivalents - end of period Cash - beginning of period Cash Cash - end of period Dilutive effect on earnings per share Dilutive Securities, Effect on Basic Earnings Per Share Schedule of Transactions With Related Parties Schedule of Related Party Transactions [Table Text Block] Business Acquisition, Pro Forma Revenue Business Acquisition, Pro Forma Revenue Business Acquisition, Pro Forma Net Income (Loss) Business Acquisition, Pro Forma Net Income (Loss) Business Acquisition, Pro Forma Earnings Per Share, Basic Business Acquisition, Pro Forma Earnings Per Share, Basic Derivative [Member] Derivative [Member] Beginning balance Change in value of risk management derivatives Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net Reclassification of gains and losses on commodity hedges to cost of product sold - propane and other gas liquids sales Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net Ending balance Derivative, Net Hedge Ineffectiveness Gain (Loss) Derivative, Net Hedge Ineffectiveness Gain (Loss) Segment Reporting Disclosure Segment Reporting Disclosure [Text Block] Contingent Consideration by Type [Axis] Contingent Consideration by Type [Axis] Contingent Consideration Type [Domain] Contingent Consideration Type [Domain] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Change in Fair Value, Type [Axis] Change in Fair Value, Type [Axis] Change in Fair Value, Type [Axis] Change in Fair Value, Type [Domain] Change in Fair Value, Type [Domain] [Domain] for Change in Fair Value, Type [Axis] Accretion [Member] Accretion [Member] Accretion, type of change in recurring fair value measurement [Member] Fair Value Change due to Unobservable Inputs [Member] Fair Value Change due to Unobservable Inputs [Member] Fair Value Change due to Unobservable Inputs, type of change of recurring fair value measurement [Member] Liability Class [Axis] Liability Class [Axis] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Schedule of Limited Partners' Capital Account by Class [Table] Schedule of Limited Partners' Capital Account by Class [Table] Limited Partners' Capital Account [Line Items] Limited Partners' Capital Account [Line Items] Distribution Made to Limited Partner, Cash Distributions Paid Distribution Made to Limited Partner, Cash Distributions Paid Supplemental Financial Statement Information Additional Financial Information Disclosure [Text Block] WTI average closing price WTI average closing price WTI average closing price WTI quarterly price decrease WTI quarterly price decrease WTI quarterly price decrease WTi crude curve decrease WTi crude curve decrease WTI crude curve decrease Summary of Significant Accounting Policies [Abstract] Summary of Significant Accounting Policies [Abstract] Significant Accounting Policies [Table] Significant Accounting Policies [Table] Significant Accounting Policies [Table] Significant Accounting Policies [Line Items] Significant Accounting Policies [Line Items] Significant Accounting Policies [Line Items] Inventory, Policy [Policy Text Block] Inventory, Policy [Policy Text Block] Accounting estimates Use of Estimates, Policy [Policy Text Block] Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] New Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Cash equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Other Noncurrent Assets [Member] Other Noncurrent Assets [Member] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] Trademarks and Trade Names [Member] Trademarks and Trade Names [Member] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Customer Lists [Member] Customer Lists [Member] Noncompete Agreements [Member] Noncompete Agreements [Member] Transportation Equipment [Member] Transportation Equipment [Member] Injection Stations and Pipelines [Member] Injection Stations and Pipelines [Member] Injection Stations and Pipelines assets [Member] Office Equipment [Member] Office Equipment [Member] Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment Postconfirmation, Goodwill Postconfirmation, Goodwill Goodwill, Acquired During Period Goodwill, Acquired During Period Goodwill, Purchase Accounting Adjustments Goodwill, Purchase Accounting Adjustments Finite-lived Intangible Assets Acquired Finite-lived Intangible Assets Acquired Indefinite-lived Intangible Assets Acquired Indefinite-lived Intangible Assets Acquired Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred Condensed Income Statement [Table] Condensed Income Statement [Table] Condensed Income Statements, Captions [Line Items] Condensed Income Statements, Captions [Line Items] Total revenues Costs and expenses: Cost of Revenue [Abstract] Cost of product sold - propane and other gas liquids sales Cost of product sold - other Goodwill impairment Loss on disposal of assets Operating income (loss) Other income (expense), net Loss on extinguishment of debt Gains (Losses) on Extinguishment of Debt Earnings (loss) before income taxes Income tax expense Equity in earnings of subsidiary Income (Loss) from Equity Method Investments Comprehensive income Operating Partnership [Member] Operating Partnership [Member] Operating Partnership [Member] is the defined term representing Ferrellgas, L.P. This member is only used when tagging for entities other than Ferrellgas, L.P. For instance, this is used as a dimension for general partner interest. The Ferrellgas, L.P. entity member is only used when tagging within Ferrellgas, L.P. - Entity domains are only used to keep the 4 entity filings on unique dimensions. Ferrellgas [Member] Ferrellgas [Member] Ferrellgas [Member], as defined in the Partnership Organization and Formation footnote, is the combination of Ferrellgas Partners, L.P. and Ferrellgas, L.P. Limited partner interest Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest Common stock shares outstanding Number of entity subsidiaries Number Of Entity Subsidiaries Number Of Entity Subsidiaries Equity interest in subsidiary Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions Number of states in which entity operates Number of States in which Entity Operates Corporation formation date Entity Incorporation, Date of Incorporation Schedule of Goodwill [Table Text Block] Schedule of Goodwill [Table Text Block] Condensed Consolidated Balance Sheets Condensed Balance Sheet [Table Text Block] Condensed Consolidated Statements of Earnings Condensed Income Statement [Table Text Block] Condensed Consolidated Statements of Cash Flows Condensed Cash Flow Statement [Table Text Block] Fixed Rate Six Point Seven Five Due Two Thousand Twenty Three [Member] Fixed Rate Six Point Seven Five Due Two Thousand Twenty Three [Member] Fixed Rate Six Point Seven Five Due Two Thousand Twenty Three [Member] Ownership interest in subsidiaries Equity Method Investment, Ownership Percentage Reconciliation of Other Significant Reconciling Items from Segments to Consolidated [Table] Reconciliation of Other Significant Reconciling Items from Segments to Consolidated [Table] Segment Reporting, Other Significant Reconciling Item [Line Items] Segment Reporting, Other Significant Reconciling Item [Line Items] Net Income (Loss) Attributable to Parent Interest Expense Interest Expense EBITDA EBITDA EBITDA Employee Stock Ownership Plan (ESOP), Compensation Expense Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Severance Costs Severance Costs Legal Fees Legal Fees Business Combination, Separately Recognized Transactions, Expenses and Losses Recognized Business Combination, Separately Recognized Transactions, Expenses and Losses Recognized Acquisition Costs, Period Cost Acquisition Costs, Period Cost Fair Value of Financial Derivatives Balance Sheet Locations Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Schedule of Derivative Collateral Schedule of Derivative Collateral [Table Text Block] Schedule of Derivative Collateral [Table Text Block] Fair Value Hedge Derivative Effect on Earnings Derivative Instruments, Gain (Loss) [Table Text Block] Cash Flow Hedge Derivative Effect on Comprehensive Income Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Derivatives not Designated as Hedging, Effect on Earnings Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Changes in Derivative Value Effect on Other Comprehensive Income (Loss) Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block] Commitments and Contingencies Disclosure [Abstract] Debt principal amount Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Common unitholders' interest in net earnings Weighted average common units outstanding - basic Weighted Average Number of Shares Outstanding, Basic Dilutive securities Weighted Average Number Diluted Shares Outstanding Adjustment Weighted average common units outstanding - diluted Weighted Average Number of Shares Outstanding, Diluted Property, Plant and Equipment Assets Held-for-sale Disclosure [Abstract] Schedule of Long Lived Assets Held-for-sale [Table] Schedule of Long Lived Assets Held-for-sale [Table] Assets held in use [Member] Assets held in use [Member] Assets held in use [Member] Long Lived Assets Held-for-sale by Asset Type [Axis] Long Lived Assets Held-for-sale by Asset Type [Axis] Long Lived Assets Held-for-sale, Name [Domain] Long Lived Assets Held-for-sale, Name [Domain] Long Lived Assets Held-for-sale [Line Items] Long Lived Assets Held-for-sale [Line Items] Impairment of Long-Lived Assets to be Disposed of Impairment of Long-Lived Assets to be Disposed of Business Acquisition, Pro Forma Information [Table Text Block] Business Acquisition, Pro Forma Information [Table Text Block] Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Interest expense recognized on fixed-rate debt Accrued interest Interest Payable, Current Accrued payroll Accrued Salaries, Current Customer deposits and advances Customer Advances and Deposits, Current Price risk management liabilities Derivative Liability, Current Other Other Sundry Liabilities, Current Other current liabilities Property, Plant and Equipment [Abstract] Land [Member] Land [Member] Land Improvements [Member] Land Improvements [Member] Building Improvements [Member] Building Improvements [Member] Bulk Equipment And District Facilities [Member] Bulk Equipment And District Facilities [Member] Bulk Equipment and District Facilities [Member] Tanks Cylinders And Customer Equipment [Member] Tanks Cylinders And Customer Equipment [Member] Tanks, Cylinders and Customer Equipment [Member] Salt water disposal wells [Member] Salt water disposal wells [Member] Salt water disposal wells [Member] Rail cars [Member] Rail cars [Member] Rail cars [Member] Injection stations [Member] Injection stations [Member] Injection stations [Member] Construction in Progress [Member] Construction in Progress [Member] Pipelines [Member] Pipelines [Member] Property, Plant and Equipment, Estimated Useful Lives Property, Plant and Equipment, Estimated Useful Lives Property, Plant and Equipment, Gross Property, Plant and Equipment, Gross Property, plant and equipment accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property, Plant and Equipment, Useful Life Property, Plant and Equipment, Useful Life Schedule of Limited Partners' Capital Account by Class [Table Text Block] Schedule of Limited Partners' Capital Account by Class [Table Text Block] Cash distributions Distributions Made to Limited Partner, by Distribution [Table Text Block] Dividends expected to be paid to related parties Distributions paid to related parties [Table Text Block] Distributions made to related parties [Table Text Block] Sensitivity of Unobservable Inputs [Table] Sensitivity of Unobservable Inputs [Table] Sensitivity of Unobservable Inputs used in recurring fair value measurement of liability [Table] Unobservable Input Sensitivity, Type [Axis] Unobservable Input Sensitivity, Type [Axis] Unobservable Input Sensitivity, Type [Axis] Unobservable Input Sensitivity, Type [Domain] Unobservable Input Sensitivity, Type [Domain] [Domain] for Unobservable Input Sensitivity, Type [Axis] Sensitivity of Unobservable Inputs [Line Items] Sensitivity of Unobservable Inputs [Line Items] [Line Items] for Sensitivity of Unobservable Inputs used in recurring fair value measurement of liability [Table] Earnings Distribution Allocation Earnings Distribution Allocation [Table Text Block] [Table Text Block] for Earnings Distribution Allocation [Table] Schedule of Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Certain cash flow and significant non-cash activities Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Summary Of Significant Accounting Policies Significant Accounting Policies [Text Block] Contingencies And Commitments Commitments and Contingencies Disclosure [Text Block] Cash Paid For [Abstract] Supplemental Cash Flow Information [Abstract] Interest Income taxes Income Taxes Paid Non-Cash Investing Activities [Abstract] Noncash Investing and Financing Items [Abstract] Noncash or Part Noncash Acquisition, Value of Liabilities Assumed Noncash or Part Noncash Acquisition, Value of Liabilities Assumed Change in accruals for property, plant and equipment additions Property, Plant and Equipment, Additions Debt Instrument [Line Items] Debt Instrument [Line Items] Condensed Cash Flow Statement [Table] Condensed Cash Flow Statement [Table] Condensed Cash Flow Statements, Captions [Line Items] Condensed Cash Flow Statements, Captions [Line Items] Net cash provided by (used in) operating activities Cash flows from investing activities: Cash collected for purchase of interest in accounts receivable Proceeds from (Repayments of) Accounts Receivable Securitization Cash remitted to Ferrellgas, L.P for accounts receivable Proceeds from (Repayments of) Accounts Receivable Securitization, Related Party Proceeds from (Repayments of) Accounts Receivable Securitization, Related Party Intercompany loan to affiliate Proceeds from Collection of (Payments to Fund) Long-term Loans to Related Parties Other Other Investing Activities, Cash Flow Statement Other Investing Activities, Cash Flow Statement Cash flows from financing activities: Proceeds from increase in long-term debt Net reductions to collateralized short-term borrowings Repayments of Other Short-term Debt Net changes in advances with consolidated entities Advances (To) From Related Parties Advances (To) From Related Parties Increase (decrease) in cash and cash equivalents Cost of Product Sold [Member] Cost of Sales [Member] Amount of gain (loss) recognized in AOCI Amount of gain (loss) reclassified from AOCI into income Debt Debt Disclosure [Text Block] Net Earning Per Common Unitholders' Interest Earnings Per Share [Text Block] Accounts And Notes Receivable, Net Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Letter Of Credit [Member] Letter of Credit [Member] Total credit faciltiy borrowings outstanding Long-term Line of Credit Other Long-term Debt, Noncurrent Other Long-term Debt, Noncurrent Available borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Weighted average interest rate on credit facility borrowings Letters of credit outstanding Letters of Credit Outstanding, Amount Goodwill, Other Changes Goodwill, Other Changes Goodwill, Written off Related to Sale of Business Unit Goodwill, Written off Related to Sale of Business Unit Goodwill, net Capital Expenditure Type [Axis] Capital Expenditure Type [Axis] Capital Expenditure Type [Axis] Capital Expenditure Type [Domain] Capital Expenditure Type [Domain] [Domain] for Capital Expenditure Type [Axis] Maintenance Capital Expenditures [Member] Maintenance Capital Expenditures [Member] Maintenance Capital Expenditures [Member] Growth Capital Expenditures [Member] Growth Capital Expenditures [Member] Growth Capital Expenditures [Member] Capital Expenditures Capital Expenditures Capital Expenditures Property, Plant and Equipment [Table Text Block] Property, Plant and Equipment [Table Text Block] Schedule of Inventories Schedule of Inventory, Current [Table Text Block] Other Current Liabilities Other Current Liabilities [Table Text Block] Shipping And Handling Expenses Shipping and Handling Expenses [Table Text Block] Shipping and Handling Expenses [Table Text Block] Disclosure of Long Lived Assets Held-for-sale [Table Text Block] Disclosure of Long Lived Assets Held-for-sale [Table Text Block] Accounts receivable Accounts Receivable, Gross Other Other Receivables Less: Allowance for doubtful accounts Allowance for Doubtful Accounts Receivable Accounts and notes receivable, net Accounts and Notes Receivable, Net Segment Information Type [Axis] Segment Information Type [Axis] Segment Information Type [Axis] Segment Information Type [Domain] Segment Information Type [Domain] [Domain] for Segment Information Type [Axis] Profit Measure [Member] Profit Measure [Member] Profit Measure [Member] Capital Expenditures [Member] Capital Expenditures [Member] Capital Expenditures [Member] Schedule of Segment Reporting Information, by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Reconciliation of Other Significant Reconciling Items from Segments to Consolidated Reconciliation of Other Significant Reconciling Items from Segments to Consolidated [Table Text Block] Reconciliation of Assets from Segment to Consolidated Reconciliation of Assets from Segment to Consolidated [Table Text Block] Accounts and notes receivable, net Cash LIABILITIES AND PARTNERS' CAPITAL (DEFICIT) Partners' capital (deficit) Limited partner Limited Partners' Capital Account General partner General Partners' Capital Account Accumulated other comprehensive income Total Ferrellgas Partners, L.P. partners' capital (deficit) Noncontrolling interest Noncontrolling Interest in Limited Partnerships Total partners' capital (deficit) Total liabilities and partners' capital (deficit) STOCKHOLDER'S EQUITY Common stock, $1.00 par value; 2,000 shares authorized; 1,000 shares issued and outstanding Common Stock, Value, Issued Additional paid in capital Additional Paid in Capital, Common Stock Accumulated deficit Retained Earnings (Accumulated Deficit) Total stockholder's equity Stockholders' Equity Attributable to Parent Interest rate swap assets Interest rate swap liabilities Propane commodity derivative liabilities Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Accounts And Notes Receivable, Net And Accounts Receivable Securitization Loans, Notes, Trade and Other Receivables Disclosure [Text Block]