Partnership Organization And Formation (Details)	9 Months Ended
Apr. 30, 2015 employee	Jul. 31, 2014
Limited partner interest	99.00%
General partner ownership interest	1.00%
Number of entity subsidiaries	2fgp_NumberOfEntitySubsidiaries
Equity interest in subsidiary	100.00%
Number of states in which entity operates	50
Number of employees	0dei_EntityNumberOfEmployees
Ferrellgas Partners Finance Corp. [Member]
Common stock shares outstanding	1,000	1,000
Corporation formation date	Mar. 28, 1996
Number of employees	0
Ferrellgas, L.P. [Member]
Limited partner interest	99.00%
General partner ownership interest	1.00%
Equity interest in subsidiary	100.00%
Number of states in which entity operates	50
Number of employees	0
Ferrellgas Finance Corp. [Member]
Common stock shares outstanding	1,000	1,000
Corporation formation date	Jan. 16, 2003
Number of employees	0
Ferrell Companies [Member]
Common stock shares outstanding	22,800,000
Operating Partnership [Member]
General partner ownership interest	1.00%
Ferrellgas [Member]
General partner ownership interest	2.00%

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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