Partners' Capital (Distributions Paid) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013
Limited Partners' Capital Account [Line Items]
Distributions	$ 39,994	$ 39,934	$ 119,901	$ 119,748
Ferrellgas, L.P. [Member]
Limited Partners' Capital Account [Line Items]
Distributions	40,402	40,342	129,054	128,899
Public Common Unitholders [Member]
Limited Partners' Capital Account [Line Items]
Distributions	26,556	26,497	79,588	79,437
Ferrell Companies [Member]
Limited Partners' Capital Account [Line Items]
Distributions	10,735	10,735	32,205	32,205
FCI Trading Corp. [Member]
Limited Partners' Capital Account [Line Items]
Distributions	98	98	294	294
Ferrell Propane, Inc. [Member]
Limited Partners' Capital Account [Line Items]
Distributions	26	26	78	78
James E. Ferrell [Member]
Limited Partners' Capital Account [Line Items]
Distributions	2,179	2,179	6,537	6,537
General Partner [Member]
Limited Partners' Capital Account [Line Items]
Distributions	400	399	1,199	1,197
General Partner [Member] | Ferrellgas, L.P. [Member]
Limited Partners' Capital Account [Line Items]
Distributions	408	408	1,304	1,302
Ferrellgas Partners [Member] | Ferrellgas, L.P. [Member]
Limited Partners' Capital Account [Line Items]
Distributions	$ 39,994	$ 39,934	$ 127,750	$ 127,597