Goodwill And Intangible Assets, Net Goodwill And Intangible Assets, Net (Goodwill Rollforward) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2012
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 253,362	$ 248,944
Goodwill acquisitions	19,879	4,640
Other	(31)	(222)
Goodwill, ending balance	273,210	253,362
Ferrellgas, L.P. [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	253,362	248,944
Goodwill acquisitions	19,879	4,640
Other	(31)	(222)
Goodwill, ending balance	273,210	253,362
Propane and related equipment sales [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	253,362	248,944
Goodwill acquisitions	2,922	4,640	0
Other	(31)	(222)
Goodwill, ending balance	256,253	253,362	248,944
Propane and related equipment sales [Member] | Ferrellgas, L.P. [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	253,362	248,944
Goodwill acquisitions	2,922	4,640	0
Other	(31)	(222)
Goodwill, ending balance	256,253	253,362	248,944
Midstream Operations [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	0	0
Goodwill acquisitions	16,957	0	0
Other	0	0
Goodwill, ending balance	16,957	0	0
Midstream Operations [Member] | Ferrellgas, L.P. [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	0	0
Goodwill acquisitions	16,957	0	0
Other	0	0
Goodwill, ending balance	$ 16,957	$ 0	$ 0