Contingencies And Commitments	12 Months Ended
Contingencies And Commitments	Jul. 31, 2020
Loss Contingencies [Line Items]
Contingencies And Commitments	O. Contingencies and commitments Litigation Ferrellgas’ operations are subject to all operating hazards and risks normally incidental to handling, storing, transporting and otherwise providing for use by consumers of combustible liquids such as propane and, prior to the sales of midstream operations in fiscal 2018, crude oil. As a result, at any given time, Ferrellgas can be threatened with or named as a defendant in various lawsuits arising in the ordinary course of business. Other than as discussed below, Ferrellgas is not a party to any legal proceedings other than various claims and lawsuits arising in the ordinary course of business. It is not possible to determine the ultimate disposition of these matters; however, management is of the opinion that there are no known claims or contingent claims that are reasonably expected to have a material adverse effect on the consolidated financial condition, results of operations and cash flows of Ferrellgas. Ferrellgas has been named as a defendant, along with a competitor, in putative class action lawsuits filed in multiple jurisdictions. The lawsuits, which were consolidated in the Western District of Missouri on October 16, 2014, allege that Ferrellgas and a competitor coordinated in 2008 to reduce the fill level in barbeque cylinders and combined to persuade a common customer to accept that fill reduction, resulting in increased cylinder costs to direct customers and end-user customers in violation of federal and certain state antitrust laws. The lawsuits seek treble damages, attorneys’ fees, injunctive relief and costs on behalf of the putative class. These lawsuits have been coordinated for pretrial purposes by the multidistrict litigation panel. The Federal Court for the Western District of Missouri initially dismissed all claims brought by direct and indirect customers other than state law claims of indirect customers under Wisconsin, Maine and Vermont law. The direct customer plaintiffs filed an appeal, which resulted in a reversal of the district court’s dismissal. We filed a petition for a writ of certiorari which was denied. An appeal by the indirect customer plaintiffs resulted in the court of appeals affirming the dismissal of the federal claims and remanding the case to the district court to decide whether to exercise supplemental jurisdiction over the remaining state law claims. Thereafter, in August 2019, Ferrellgas reached a settlement with the direct customers, pursuant to which it agreed to pay a total of $6.25 million to resolve all claims asserted by the putative direct purchaser class. With respect to the indirect customers, the district court exercised supplemental jurisdiction over the remaining state law claims, but then granted in part Ferrellgas’ pleadings-based motion and dismissed 11 of the 24 remaining state law claims. As a result, there are 13 remaining state law claims brought by a putative class of indirect customers. Ferrellgas believes it has strong defenses and intends to vigorously defend itself against these remaining claims. Ferrellgas does not believe loss is probable or reasonably estimable at this time related to the putative class action lawsuit. Ferrellgas and Bridger Logistics, LLC (“Bridger”), have been named, along with two former officers, in a lawsuit filed by Eddystone Rail Company ("Eddystone") on February 2, 2017 in the Eastern District of Pennsylvania (the "EDPA Lawsuit"). Eddystone indicated that it has prevailed in or settled an arbitration against Jamex Transfer Services (“JTS”), previously named Bridger Transfer Services, a former subsidiary of Bridger. The arbitration involved a claim against JTS for money due for deficiency payments under a contract for the use of an Eddystone facility used to offload crude from rail onto barges. Eddystone alleges that Ferrellgas transferred assets out of JTS prior to the sale of the membership interest in JTS to Jamex Transfer Holdings, and that those transfers should be avoided so that the assets can be used to satisfy the amount owed by JTS to Eddystone as a result of the arbitration. Eddystone also alleges that JTS was an “alter ego” of Bridger and Ferrellgas and that Bridger and Ferrellgas breached fiduciary duties owed to Eddystone as a creditor of JTS. Ferrellgas believes that Ferrellgas and Bridger have valid defenses to these claims and to Eddystone’s primary claim against JTS for breach of contract. The lawsuit does not specify a specific amount of damages that Eddystone is seeking; however, Ferrellgas believes that the amount of such damages, if ultimately owed to Eddystone, could be material to Ferrellgas. Ferrellgas intends to vigorously defend this claim. On August 24, 2017, Ferrellgas filed a third-party complaint against JTS, Jamex Transfer Holdings, and other related persons and entities (the "Third-Party Defendants"), asserting claims for breach of contract, indemnification of any losses in the EDPA Lawsuit, tortious interference with contract, and contribution. On June 25, 2018, Ferrellgas entered into an agreement with the Third-Party Defendants which, among other things, resulted in a dismissal of the claims against the Third-Party Defendants from the lawsuit. The lawsuit is in the discovery stage; as such, management does not currently believe a loss is probable or reasonably estimable at this time. Long-term debt-related commitments Ferrellgas has long and short-term payment obligations under agreements such as the indentures governing its senior notes. See Note I – Debt – for a description of these debt obligations and a schedule of future maturities.
Ferrellgas Partners Finance Corp. [Member]
Loss Contingencies [Line Items]
Contingencies And Commitments	B. Contingencies and commitments The Finance Corp. serves as co-issuer and co-obligor for debt securities of the Partnership. The Finance Corp. is liable as co-issuer and co-obligor for the $357 million aggregate principal amount of the Partnership’s unsecured senior notes due June 15, 2020, which the Partnership failed to repay, and which obligation is only reported on the Partnership’s consolidated balance sheet.
Ferrellgas, L.P. [Member]
Loss Contingencies [Line Items]
Contingencies And Commitments	O. Contingencies and commitments Litigation Ferrellgas, L.P.’s operations are subject to all operating hazards and risks normally incidental to handling, storing, transporting and otherwise providing for use by consumers of combustible liquids such as propane and, prior to the sales of midstream operations in fiscal 2018, crude oil. As a result, at any given time, Ferrellgas, L.P. can be threatened with or named as a defendant in various lawsuits arising in the ordinary course of business. Other than as discussed below, Ferrellgas, L.P. is not a party to any legal proceedings other than various claims and lawsuits arising in the ordinary course of business. It is not possible to determine the ultimate disposition of these matters; however, management is of the opinion that there are no known claims or contingent claims that are reasonably expected to have a material adverse effect on the consolidated financial condition, results of operations and cash flows of Ferrellgas, L.P. Ferrellgas, L.P. has been named as a defendant, along with a competitor, in putative class action lawsuits filed in multiple jurisdictions. The lawsuits, which were consolidated in the Western District of Missouri on October 16, 2014, allege that Ferrellgas and a competitor coordinated in 2008 to reduce the fill level in barbeque cylinders and combined to persuade a common customer to accept that fill reduction, resulting in increased cylinder costs to direct customers and end-user customers in violation of federal and certain state antitrust laws. The lawsuits seek treble damages, attorneys’ fees, injunctive relief and costs on behalf of the putative class. These lawsuits have been coordinated for pretrial purposes by the multidistrict litigation panel. The Federal Court for the Western District of Missouri initially dismissed all claims brought by direct and indirect customers other than state law claims of indirect customers under Wisconsin, Maine and Vermont law. The direct customer plaintiffs filed an appeal, which resulted in a reversal of the district court’s dismissal. We filed a petition for a writ of certiorari which was denied. An appeal by the indirect customer plaintiffs resulted in the court of appeals affirming the dismissal of the federal claims and remanding the case to the district court to decide whether to exercise supplemental jurisdiction over the remaining state law claims. Thereafter, in August 2019, Ferrellgas, L.P. reached a settlement with the direct customers, pursuant to which it agreed to pay a total of $6.25 million to resolve all claims asserted by the putative direct purchaser class. With respect to the indirect customers, the district court exercised supplemental jurisdiction over the remaining state law claims, but then granted in part Ferrellgas’ pleadings-based motion and dismissed 11 of the 24 remaining state law claims. As a result, there are 13 remaining state law claims brought by a putative class of indirect customers. Ferrellgas, L.P. believes it has strong defenses and intends to vigorously defend itself against these remaining claims. Ferrellgas, L.P. does not believe loss is probable or reasonably estimable at this time related to the putative class action lawsuit. Ferrellgas, L.P. and Bridger Logistics, LLC (“Bridger”), have been named, along with two former officers, in a lawsuit filed by Eddystone Rail Company ("Eddystone") on February 2, 2017 in the Eastern District of Pennsylvania (the "EDPA Lawsuit"). Eddystone indicated that it has prevailed in or settled an arbitration against Jamex Transfer Services (“JTS”), previously named Bridger Transfer Services, a former subsidiary of Bridger. The arbitration involved a claim against JTS for money due for deficiency payments under a contract for the use of an Eddystone facility used to offload crude from rail onto barges. Eddystone alleges that Ferrellgas transferred assets out of JTS prior to the sale of the membership interest in JTS to Jamex Transfer Holdings, and that those transfers should be avoided so that the assets can be used to satisfy the amount owed by JTS to Eddystone as a result of the arbitration. Eddystone also alleges that JTS was an “alter ego” of Bridger and Ferrellgas and that Bridger and Ferrellgas breached fiduciary duties owed to Eddystone as a creditor of JTS. Ferrellgas believes that Ferrellgas and Bridger have valid defenses to these claims and to Eddystone’s primary claim against JTS for breach of contract. The lawsuit does not specify a specific amount of damages that Eddystone is seeking; however, Ferrellgas believes that the amount of such damages, if ultimately owed to Eddystone, could be material to Ferrellgas. Ferrellgas intends to vigorously defend this claim. On August 24, 2017, Ferrellgas filed a third-party complaint against JTS, Jamex Transfer Holdings, and other related persons and entities (the "Third-Party Defendants"), asserting claims for breach of contract, indemnification of any losses in the EDPA Lawsuit, tortious interference with contract, and contribution. On June 25, 2018, Ferrellgas entered into an agreement with the Third-Party Defendants which, among other things, resulted in a dismissal of the claims against the Third-Party Defendants from the lawsuit. The lawsuit is in the discovery stage; as such, management does not currently believe a loss is probable or reasonably estimable at this time. Long-term debt-related commitments Ferrellgas, L.P. has long and short-term payment obligations under agreements such as the indentures governing its senior notes. See Note I – Debt – for a description of these debt obligations and a schedule of future maturities.
Ferrellgas Finance Corp. [Member]
Loss Contingencies [Line Items]
Contingencies And Commitments	B. Contingencies and commitments The Finance Corp. serves as co-issuer and co-obligor for debt securities of the Partnership. The Finance Corp. is liable as co-issuer and co-obligor for (i) the $500 million aggregate principal amount of the Partnership’s unsecured senior notes due 2021, (ii) the $475 million aggregate principal amount of the Partnership’s unsecured senior notes due 2022, and (iii) the $500 million aggregate principal amount of the Partnership’s unsecured senior notes due 2023, which obligations are only reported on the Partnership’s consolidated balance sheet.