Summary Of Significant Accounting Policies (Deferred Taxes Assets And Liabilities) (Details) (USD $)	Jul. 31, 2013	Jul. 31, 2012
Deferred tax assets	$ 1,367,000	$ 1,158,000
Deferred tax liabilities	(4,602,000)	(4,241,000)
Net deferred tax liability	(3,235,000)	(3,083,000)
Ferrellgas, L.P. [Member]
Deferred tax assets	1,367,000	1,158,000
Deferred tax liabilities	(4,602,000)	(4,241,000)
Net deferred tax liability	$ (3,235,000)	$ (3,083,000)