Document And Entity Information [Abstract] Document Information [Table] Legal Entity [Axis] All Entities [Member] Information pertaining to Ferrellgas LP, the Operating Partnership. Ferrellgas, L.P. Ferrellgas, L.P. FERRELLGAS PARTNERS FINANCE CORP. [Member] Ferrellgas Partners Finance Corp Ferrellgas Partners Finance Corp FERRELLGAS FINANCE CORP. [Member] Ferrellgas Finance Corp Ferrellgas Finance Corp Class of Stock [Axis] Class of Stock [Domain] Information pertaining to common partnership units, Class A. Class A Common Units [Member] Class A Limited Partner Units Document Information [Line Items] Document And Entity Information Document Type Document Type Document Quarterly Report Document Period End Date Document Period End Date Document Transition Report Securities Act File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Shell Company Title of 12(b) Security No Trading Symbol Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Bankruptcy Proceedings, Reporting Current Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag CONDENSED CONSOLIDATED BALANCE SHEETS Statement [Table] Statement [Table] Information pertaining to common partnership units, Class B. Class B Common Units [Member] Class B Limited Partner Units Statement [Line Items] Statement Assets [Abstract] ASSETS Assets, Current [Abstract] Current assets: Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Cash and cash equivalents - end of period Cash and cash equivalents - beginning of period Cash and cash equivalents Accounts Receivable, after Allowance for Credit Loss, Current Accounts receivable (net of allowance for expected credit losses of $5,595 and $4,330 at April 30, 2026 and July 31, 2025, respectively) Inventory, Net Inventories Inventories Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Prepaid expenses and other current assets Assets, Current Total current assets Property, Plant and Equipment, Net Property, plant and equipment, net Goodwill Goodwill, net Intangible Assets, Net (Excluding Goodwill) Intangible assets (net of accumulated amortization of $372,283 and $366,817 at April 30, 2026 and July 31, 2025, respectively) Operating Lease, Right-of-Use Asset Operating lease right-of-use assets Other Assets, Noncurrent Other assets, net Assets Total assets Liabilities and Equity [Abstract] LIABILITIES, MEZZANINE EQUITY AND DEFICIT Liabilities, Current [Abstract] Current liabilities: Accounts Payable, Current Accounts payable Short-Term Debt Short-term borrowings Long-Term Debt, Current Maturities Less: current portion of long-term debt Current portion of long-term debt Operating Lease, Liability, Current Current operating lease liabilities Other Liabilities, Current Other current liabilities Other current liabilities Liabilities, Current Total current liabilities Long-Term Debt, Excluding Current Maturities Long-term debt Operating Lease, Liability, Noncurrent Operating lease liabilities Other Liabilities, Noncurrent Other liabilities Commitments and Contingencies Contingencies and commitments (Note K) Temporary Equity [Abstract] Mezzanine equity: Temporary Equity, Carrying Amount, Attributable to Parent Senior preferred units, net of issue discount and offering costs (700,000 units outstanding at April 30, 2026 and July 31, 2025) Partners' Capital [Abstract] Deficit: Limited Partners' Capital Account Limited partner unitholders General Partners' Capital Account General partner unitholder Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income (loss) Partners' Capital Total Ferrellgas Partners, L.P. deficit Noncontrolling Interest in Limited Partnerships Noncontrolling interest Partners' Capital, Including Portion Attributable to Noncontrolling Interest Partners' capital balance Partners' capital balance Total deficit Equity (Deficit) STOCKHOLDER'S EQUITY Common Stock, Value, Issued Common stock, $1.00 par value; 2,000 shares authorized; 1,000 shares issued and outstanding Additional Paid in Capital, Common Stock Additional paid in capital Retained Earnings (Accumulated Deficit) Accumulated deficit Equity, Attributable to Parent Total stockholder's equity Liabilities and Equity Total liabilities, mezzanine equity and deficit Accounts Receivable, Allowance for Credit Loss, Current Allowance for doubtful accounts Finite-Lived Intangible Assets, Accumulated Amortization Amortizable intangible assets, accumulated amortization Temporary Equity, Shares Outstanding Senior preferred units, units outstanding Preferred units, units outstanding Limited Partners' Capital Account, Units Outstanding Limited partner unitholders, units outstanding General Partners' Capital Account, Units Outstanding General partner unitholder, units outstanding Common Stock, Par or Stated Value Per Share Common stock, par value Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Outstanding Common stock, shares outstanding CONSOLIDATED STATEMENTS OF OPERATIONS Product and Service [Axis] Product and Service [Domain] Propane [Member] Propane and other gas liquids sales Product and Service, Other [Member] Other Revenues [Abstract] Revenues: Revenue from Contract with Customer, Excluding Assessed Tax Revenues Total revenues Costs and Expenses [Abstract] Costs and expenses: Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization Cost of sales Other Cost and Expense, Operating Operating expense - personnel, vehicle, plant and other Operating Lease, Expense Operating expense - equipment lease expense Depreciation, Depletion and Amortization Depreciation and amortization expense General and Administrative Expense General and administrative expense Employee Stock Ownership Plan (ESOP), Compensation Expense Non-cash employee stock ownership plan compensation charge Gain (Loss) on Disposition of Assets Loss on asset sales and disposals Operating Income (Loss) Operating income Interest Expense, Debt Interest expense Gain (Loss) on Extinguishment of Debt Loss on extinguishment of debt Total loss on extinguishment of debt Loss on extinguishment of debt Nonoperating Income (Expense) Other income, net Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Earnings before income taxes Income Tax Expense (Benefit) Income tax expense Income tax expense Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net earnings Net earnings Net Income (Loss) Attributable to Noncontrolling Interest Net earnings (loss) attributable to noncontrolling interest Net earnings attributable to Ferrellgas Partners, L.P. Net earnings attributable to Ferrellgas Partners, L.P. Net Income (Loss) Allocated to Limited Partners Undistributed net (loss) earnings attributable to Class A unitholders Class A unitholders' interest in net (loss) earnings (Note M) Net Income (Loss), Per Outstanding Limited Partnership and General Partnership Unit, Basic and Diluted, Net of Tax Basic and diluted net earnings (loss) per Class A Unit Basic and diluted net (loss) earnings per Class A Unit (Note M) Related and Nonrelated Parties [Axis] Related and Nonrelated Parties [Domain] Information pertaining to Ferrellgas Inc., the General Partner. Ferrellgas Inc., General Partner Ferrellgas Inc., General Partner Management Fee Expense Operating expense Administrative Fees Expense General and administrative expense CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Comprehensive income (loss): Other Comprehensive Income (Loss), Net of Tax [Abstract] Other comprehensive income (loss): Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Change in value of risk management commodity derivatives Change in value of risk management derivatives Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Reclassification of losses on commodity hedges to cost of sales - propane and other gas liquids sales, net Reclassification of losses (gains) on derivatives to earnings, net Other Comprehensive Income (Loss), Net of Tax Other comprehensive income (loss) Other comprehensive income (loss): Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive (income) loss attributable to noncontrolling interest Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income attributable to Ferrellgas Partners, L.P. CONSOLIDATED STATEMENTS OF DEFICIT Partner Type [Axis] Partner Type of Partners' Capital Account, Name [Domain] Limited Partner [Member] Limited partner unitholders Limited Partner General Partner [Member] General Partner General partner unitholders Partner Capital Components [Axis] Partner Capital Components [Domain] AOCI Attributable to Parent [Member] Accumulated other comprehensive income Parent [Member] Parent Noncontrolling Interest [Member] Non-Controlling Interest Non-controlling interest Increase (Decrease) in Partners' Capital [Roll Forward] Increase (Decrease) in Partners' Capital [Roll Forward] Partners' Capital Account, Units Partners' capital balance (in shares) Partners' capital balance (in shares) Partners' Capital Account, Unit-Based Payment Arrangement, Amount Contributions in connection with non-cash ESOP compensation charges Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Distributions Limited Partners' Capital Account, Distribution Amount Distributions to Class B unitholders Distributions to Class B unitholders The amount represents net earnings allocated to Class B units. Net Earnings Allocated To Class B Units Net earnings allocated to Class B Units Temporary Equity, Net Income Net earnings allocated to preferred units Monetary value of units converted into shares of each class of partners' capital account. Units represent shares of ownership of the general, limited, and preferred partners. Partners' Capital Account, Converted Conversion of Class B Units Partners' Capital Account, Units, Converted Conversion of Class B Units - shares CONSOLIDATED STATEMENTS OF CASH FLOWS Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Cash flows from operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Reconciliation of net earnings to net cash provided by operating activities: Accounts Receivable, Credit Loss Expense (Reversal) Provision for expected credit losses Other Noncash Income (Expense) Other Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities, net of effects from business acquisitions: Increase (Decrease) in Accounts and Notes Receivable Accounts receivable Increase (Decrease) in Inventories Inventories Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses and other current assets Increase (Decrease) in Accounts Payable Accounts payable Increase (Decrease) in Interest Payable, Net Accrued interest expense Increase (Decrease) in Other Current Liabilities Other current liabilities Increase (Decrease) in Other Noncurrent Assets and Liabilities, Net Other assets and liabilities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Net cash provided by operating activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Cash flows from investing activities: Payments to Acquire Businesses, Net of Cash Acquired Business acquisition, net of cash acquired Payments to Acquire Property, Plant, and Equipment Capital expenditures Proceeds from Sale of Productive Assets Proceeds from sale of assets Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Net cash used in investing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Cash flows from financing activities: The cash outflow from distributions to temporary equity holders during the period. Temporary Equity, Distribution Preferred unit distributions Cash distribution Payments of Capital Distribution Distributions to Class B unitholders Repayments of Long-Term Debt Payments on long-term debt Proceeds from Issuance of Long-Term Debt Proceeds from issuance of long-term debt The amount of cash outflow for settlement and early extinguishment of liabilities during the period, classified as financing. Payments For Settlement And Early Extinguishment Of Liabilities Payment for settlement and early extinguishment of liabilities Proceeds from Short-Term Debt Proceeds from short-term borrowings Finance Lease, Principal Payments Cash paid for principal portion of finance lease liability Payments of Financing Costs Cash paid for financing costs Change in liability in connection with failed sale-leaseback Other, net Proceeds from Contributed Capital Capital contribution Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Net cash used in financing activities Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation Net change in cash and cash equivalents Partnership organization and formation Subsidiary of LLC or LP [Table] Subsidiary of Limited Liability Company or Limited Partnership [Line Items] Partnership organization and formation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Partnership organization and formation Summary of Significant Accounting Policies [Abstract] Summary of significant accounting policies Significant Accounting Policies [Text Block] Summary of significant accounting policies Supplemental Financial Statement Information [Abstract] Supplemental financial statement information Schedule reflecting supplemental financial statement information. Supplemental Financial Statement Information [Table] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Supplemental Financial Statement Information [Line Items] Supplemental financial statement information Additional Financial Information Disclosure [Text Block] Supplemental financial statement information Debt Schedule of Long-Term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table]