Summary Of Significant Accounting Policies (Narrative) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Jul. 31, 2014 subsidiary	Jul. 31, 2013	Jul. 31, 2012
General partner ownership interest	1.00%
Revenue recognized over a straight-line basis, term	1 year
Non-cash stock and unit-based compensation charge	$ 24,508	$ 13,545	$ 8,843
Number of taxable subsidiaries	1
Ferrellgas, L.P. [Member]
General partner ownership interest	1.00%
Revenue recognized over a straight-line basis, term	1 year
Non-cash stock and unit-based compensation charge	24,508	13,545	8,843
Minimum [Member]
Property, plant and equipment useful life	2 years
Intangible asset useful life	2 years
Minimum [Member] | Ferrellgas, L.P. [Member]
Property, plant and equipment useful life	2 years
Intangible asset useful life	2 years
Maximum [Member]
Property, plant and equipment useful life	30 years
Intangible asset useful life	15 years
Maximum [Member] | Ferrellgas, L.P. [Member]
Property, plant and equipment useful life	30 years
Intangible asset useful life	15 years
Ferrell Companies, Inc. Incentive Compensation Plan [Member]
Number of shares authorized to be issued as options	9,250,000
Non-cash stock and unit-based compensation charge	24,500	13,500	8,800
Stock options, percent to vest upon event	100.00%
Retirement age	65
Ferrell Companies, Inc. Incentive Compensation Plan [Member] | Ferrellgas, L.P. [Member]
Number of shares authorized to be issued as options	9,250,000
Non-cash stock and unit-based compensation charge	$ 24,500	$ 13,500	$ 8,800
Stock options, percent to vest upon event	100.00%
Retirement age	65
Ferrell Companies, Inc. Incentive Compensation Plan [Member] | Minimum [Member]
Award vesting period	0 years
Term till award expiration	10 years
Ferrell Companies, Inc. Incentive Compensation Plan [Member] | Minimum [Member] | Ferrellgas, L.P. [Member]
Award vesting period	0 years
Term till award expiration	10 years
Ferrell Companies, Inc. Incentive Compensation Plan [Member] | Maximum [Member]
Award vesting period	12 years
Term till award expiration	15 years
Ferrell Companies, Inc. Incentive Compensation Plan [Member] | Maximum [Member] | Ferrellgas, L.P. [Member]
Award vesting period	12 years
Term till award expiration	15 years
Operating Partnership [Member]
General partner ownership interest	1.00%
Operating Partnership [Member] | Ferrellgas, L.P. [Member]
Number of taxable subsidiaries	3