Partners' Capital (Ferrellgas Paid Cash Distributions) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2012
Limited Partners' Capital Account [Line Items]
Distributions	$ 160,925	$ 159,682	$ 156,520
Public Common Unitholders [Member]
Limited Partners' Capital Account [Line Items]
Distributions	107,164	105,934	104,192
Ferrell Companies [Member]
Limited Partners' Capital Account [Line Items]
Distributions	42,939	42,939	41,550
FCI Trading Corp. [Member]
Limited Partners' Capital Account [Line Items]
Distributions	392	392	392
Ferrell Propane, Inc. [Member]
Limited Partners' Capital Account [Line Items]
Distributions	104	104	104
James E. Ferrell [Member]
Limited Partners' Capital Account [Line Items]
Distributions	8,717	8,717	8,717
General Partner [Member]
Limited Partners' Capital Account [Line Items]
Distributions	1,609	1,596	1,565
General Partner [Member] | Ferrellgas, L.P. [Member]
Limited Partners' Capital Account [Line Items]
Distributions	1,803	1,790	1,757
Ferrellgas Partners [Member] | Ferrellgas, L.P. [Member]
Limited Partners' Capital Account [Line Items]
Distributions	$ 176,623	$ 175,380	$ 172,218