Partners' Capital (Distributions Paid) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2014	Jan. 31, 2013
Limited Partners' Capital Account [Line Items]
Distributions	$ 39,972	$ 39,907	$ 79,907	$ 79,814
Ferrellgas, L.P. [Member]
Limited Partners' Capital Account [Line Items]
Distributions	48,309	48,243	88,652	88,557
Public Common Unitholders [Member]
Limited Partners' Capital Account [Line Items]
Distributions	26,534	26,470	53,032	52,940
Ferrell Companies [Member]
Limited Partners' Capital Account [Line Items]
Distributions	10,735	10,735	21,470	21,470
FCI Trading Corp. [Member]
Limited Partners' Capital Account [Line Items]
Distributions	98	98	196	196
Ferrell Propane, Inc. [Member]
Limited Partners' Capital Account [Line Items]
Distributions	26	26	52	52
James E. Ferrell [Member]
Limited Partners' Capital Account [Line Items]
Distributions	2,179	2,179	4,358	4,358
General Partner [Member]
Limited Partners' Capital Account [Line Items]
Distributions	400	399	799	798
General Partner [Member] | Ferrellgas, L.P. [Member]
Limited Partners' Capital Account [Line Items]
Distributions	488	487	896	894
Ferrellgas Partners [Member] | Ferrellgas, L.P. [Member]
Limited Partners' Capital Account [Line Items]
Distributions	$ 47,821	$ 47,756	$ 87,756	$ 87,663