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Amount of equity impact of cash distribution declared to unit-holder of limited partnership (LP).

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Date of declaration for distribution of cash or unit to limited partner of limited partnership (LP), in CCYY-MM-DD format.

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Per unit of ownership amount of cash distributions declared to unit-holder of a limited partnership (LP).

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Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

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The cash inflow from the capital received in cash from a partner in a partnership during the period.

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Value of shares of stock issued during the period that is attributable to transactions involving issuance of stock not separately disclosed.

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Partners' Capital (Narrative) (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	9 Months Ended		0 Months Ended
	Apr. 30, 2015	Apr. 30, 2014	Jun. 16, 2015	May 28, 2015
Capital Unit [Line Items]
Limited partner ownership interest	27.20%
General partner ownership interest	1.00%
Contributions from partners	$ 425,000	$ 6,000
Stock Issued During Period, Shares, Treasury Stock Reissued	1.5
Stock Issued During Period, Value, Other	42,000,000
Ferrellgas, L.P. [Member]
Capital Unit [Line Items]
General partner ownership interest	1.00%
Contributions from partners	42,655,000	606,000
Ferrellgas Partners [Member] \| Ferrellgas, L.P. [Member]
Capital Unit [Line Items]
Contributions from partners	42,200,000
General Partner [Member]
Capital Unit [Line Items]
General partner ownership interest	2.00%
Contributions from partners	900,000
Non-cash contributions	700,000	500,000
General Partner [Member] \| Ferrellgas, L.P. [Member]
Capital Unit [Line Items]
General partner ownership interest	1.0101%
Contributions from partners	400,000
Non-cash contributions	400,000	300,000
Subsequent Event [Member]
Capital Unit [Line Items]
Cash distribution declaration date			May 22, 2015
Cash distributions declared per common unit			$ 0.50
Cash distributions payment date				Jun. 12, 2015
Subsequent Event [Member] \| Ferrellgas, L.P. [Member]
Capital Unit [Line Items]
Cash distribution declaration date			May 22, 2015
Cash distributions payment date				Jun. 12, 2015
Subsequent Event [Member] \| Ferrellgas Partners [Member] \| Ferrellgas, L.P. [Member]
Capital Unit [Line Items]
Cash distributions to related parties				49,600,000
Subsequent Event [Member] \| General Partner [Member]
Capital Unit [Line Items]
Cash distributions to related parties				418,000
Subsequent Event [Member] \| General Partner [Member] \| Ferrellgas, L.P. [Member]
Capital Unit [Line Items]
Cash distributions to related parties				500,000