Summary Of Significant Accounting Policies (Summary Of Income Tax Expense) (Details) (USD $)	12 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2012
Current expense	$ 2,428,000	$ 1,722,000	$ 215,000
Deferred expense	88,000	133,000	913,000
Income tax expense	2,516,000	1,855,000	1,128,000
Ferrellgas, L.P. [Member]
Current expense	2,383,000	1,705,000	207,000
Deferred expense	88,000	133,000	913,000
Income tax expense	$ 2,471,000	$ 1,838,000	$ 1,120,000