Partnership Organization And Formation	6 Months Ended
Partnership Organization And Formation	Jan. 31, 2019
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Partnership Organization And Formation	A. Partnership organization and formation Ferrellgas Partners, L.P. (“Ferrellgas Partners”) was formed April 19, 1994, and is a publicly traded limited partnership, owning an approximate 99% limited partner interest in Ferrellgas, L.P. (the "operating partnership"). Ferrellgas Partners and the operating partnership, collectively referred to as “Ferrellgas,” are both Delaware limited partnerships and are governed by their respective partnership agreements. Ferrellgas Partners was formed to acquire and hold a limited partner interest in the operating partnership. As of January 31, 2019, Ferrell Companies, Inc. ("Ferrell Companies") beneficially owns 22.8 million Ferrellgas Partners common units. Ferrellgas, Inc. (the "general partner"), a wholly-owned subsidiary of Ferrell Companies, has retained an approximate 1% general partner interest in Ferrellgas Partners and also holds an approximate 1% general partner interest in the operating partnership, representing an effective 2% general partner interest in Ferrellgas on a combined basis. As general partner, it performs all management functions required by Ferrellgas. Unless contractually provided for, creditors of the operating partnership have no recourse with regards to Ferrellgas Partners. Ferrellgas Partners is a holding entity that conducts no operations and has two subsidiaries, Ferrellgas Partners Finance Corp. and the operating partnership. Ferrellgas Partners owns a 100% equity interest in Ferrellgas Partners Finance Corp., whose only business activity is to act as the co-issuer and co-obligor of debt issued by Ferrellgas Partners. The operating partnership is the only operating subsidiary of Ferrellgas Partners. Ferrellgas is primarily engaged in the retail distribution of propane and related equipment sales. The propane distribution market is seasonal because propane is used primarily for heating in residential and commercial buildings. Ferrellgas serves residential, industrial/commercial, portable tank exchange, agricultural, wholesale and other customers in all 50 states, the District of Columbia, and Puerto Rico. Due to seasonality, the results of operations for the six months ended January 31, 2019 are not necessarily indicative of the results to be expected for the full fiscal year ending July 31, 2019. The condensed consolidated financial statements of Ferrellgas reflect all adjustments that are, in the opinion of management, necessary for a fair presentation of the interim periods presented. All adjustments to the condensed consolidated financial statements were of a normal recurring nature. Certain prior period amounts have been reclassified to conform to the current period presentation. The information included in this Quarterly Report on Form 10‑Q should be read in conjunction with (i) the section entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and (ii) the consolidated financial statements and accompanying notes included in Ferrellgas’ Annual Report on Form 10‑K for fiscal 2018.
Ferrellgas Partners Finance Corp. [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Partnership Organization And Formation	A. Formation Ferrellgas Partners Finance Corp. (the “Finance Corp.”), a Delaware corporation, was formed on March 28, 1996 and is a wholly-owned subsidiary of Ferrellgas Partners, L.P. (the “Partnership”). The condensed financial statements reflect all adjustments that are, in the opinion of management, necessary for a fair presentation of the interim periods presented. All adjustments to the condensed financial statements were of a normal recurring nature. The Finance Corp. has nominal assets, does not conduct any operations and has no employees.
Ferrellgas, L.P. [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Partnership Organization And Formation	A. Partnership organization and formation Ferrellgas, L.P. is a limited partnership that owns and operates propane distribution and related assets, crude oil transportation and logistics related assets and salt water disposal wells in south Texas. Ferrellgas Partners, L.P. (“Ferrellgas Partners”), a publicly traded limited partnership, holds an approximate 99% limited partner interest in, and consolidates, Ferrellgas, L.P. Ferrellgas, Inc. (the “general partner”), a wholly-owned subsidiary of Ferrell Companies, Inc. (“Ferrell Companies”), holds an approximate 1% general partner interest in Ferrellgas, L.P. and performs all management functions required by Ferrellgas, L.P. Ferrellgas, L.P. owns a 100% equity interest in Ferrellgas Finance Corp., whose only business activity is to act as the co-issuer and co-obligor of debt issued by Ferrellgas, L.P. Ferrellgas, L.P. is primarily engaged in the retail distribution of propane and related equipment sales. The propane distribution market is seasonal because propane is used primarily for heating in residential and commercial buildings. Ferrellgas serves residential, industrial/commercial, portable tank exchange, agricultural, wholesale and other customers in all 50 states, the District of Columbia, and Puerto Rico. Due to seasonality, the results of operations for the six months ended January 31, 2019 are not necessarily indicative of the results to be expected for the full fiscal year ending July 31, 2019. The condensed consolidated financial statements of Ferrellgas, L.P. and subsidiaries reflect all adjustments that are, in the opinion of management, necessary for a fair presentation of the interim periods presented. All adjustments to the condensed consolidated financial statements were of a normal recurring nature. Certain prior period amounts have been reclassified to conform to the current period presentation. The information included in this Quarterly Report on Form 10‑Q should be read in conjunction with (i) the section entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and (ii) the consolidated financial statements and accompanying notes included in Ferrellgas, L.P.’s Annual Report on Form 10‑K for fiscal 2018.
Ferrellgas Finance Corp. [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Partnership Organization And Formation	A. Formation Ferrellgas Finance Corp. (the “Finance Corp.”), a Delaware corporation, was formed on January 16, 2003 and is a wholly-owned subsidiary of Ferrellgas, L.P. (the “Partnership”). The condensed financial statements reflect all adjustments that are, in the opinion of management, necessary for a fair presentation of the interim periods presented. All adjustments to the condensed financial statements were of a normal recurring nature. The Finance Corp. has nominal assets, does not conduct any operations and has no employees.