Income Taxes (Narrative) (Details) (USD $)	12 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2012
Deferred tax expense (benefit)	$ 88,000	$ 133,000	$ 913,000
Deferred tax assets	1,152,000	1,367,000
Ferrellgas Partners Finance Corp. [Member]
Deferred tax assets, operating loss carryforwards	5,675
Net operating loss carryforward	14,588
Net operating loss carryforward, expiration date	Jul. 31, 2034
Deferred tax expense (benefit)	0	0	0
Deferred tax assets	0	0
Valuation allowance provided for deferred tax asset	5,675
Ferrellgas Finance Corp. [Member]
Deferred tax assets, operating loss carryforwards	19,103
Net operating loss carryforward	49,109
Net operating loss carryforward, expiration date	Jul. 31, 2034
Deferred tax expense (benefit)	0	0	0
Deferred tax assets	0	0
Valuation allowance provided for deferred tax asset	$ 19,103