Income Taxes (Narrative) (Details) (USD $)	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Deferred tax expense (benefit)	$ 133,000	$ 913,000	$ 751,000
Deferred tax assets	1,367,000	1,158,000
Ferrellgas Partners Finance Corp. [Member]
Deferred tax assets, operating loss carryforwards	5,063
Net operating loss carryforward	13,016
Net operating loss carryforward, expiration date	Jul. 31, 2033
Deferred tax expense (benefit)	0	0	0
Deferred tax assets	0	0
Valuation allowance provided for deferred tax asset	5,063
Ferrellgas Finance Corp. [Member]
Deferred tax assets, operating loss carryforwards	17,046
Net operating loss carryforward	43,820
Net operating loss carryforward, expiration date	Jul. 31, 2033
Deferred tax expense (benefit)	0	0	0
Deferred tax assets	0	0
Valuation allowance provided for deferred tax asset	$ 17,046