Segment Reporting Segment Reporting (Schedule of Capital Expenditure Information, by Segment) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 31, 2014
Statement [Line Items]
Capital Expenditures	$ 50,981
Propane and related equipment sales [Member]
Statement [Line Items]
Capital Expenditures	45,183
Midstream Operations [Member]
Statement [Line Items]
Capital Expenditures	1,896
Corporate and Other [Member]
Statement [Line Items]
Capital Expenditures	3,902
Maintenance Capital Expenditures [Member]
Statement [Line Items]
Capital Expenditures	18,138
Maintenance Capital Expenditures [Member] | Propane and related equipment sales [Member]
Statement [Line Items]
Capital Expenditures	14,682
Maintenance Capital Expenditures [Member] | Midstream Operations [Member]
Statement [Line Items]
Capital Expenditures	181
Maintenance Capital Expenditures [Member] | Corporate and Other [Member]
Statement [Line Items]
Capital Expenditures	3,275
Growth Capital Expenditures [Member]
Statement [Line Items]
Capital Expenditures	32,843
Growth Capital Expenditures [Member] | Propane and related equipment sales [Member]
Statement [Line Items]
Capital Expenditures	30,501
Growth Capital Expenditures [Member] | Midstream Operations [Member]
Statement [Line Items]
Capital Expenditures	1,715
Growth Capital Expenditures [Member] | Corporate and Other [Member]
Statement [Line Items]
Capital Expenditures	627
Ferrellgas, L.P. [Member]
Statement [Line Items]
Capital Expenditures	50,981
Ferrellgas, L.P. [Member] | Propane and related equipment sales [Member]
Statement [Line Items]
Capital Expenditures	45,183
Ferrellgas, L.P. [Member] | Midstream Operations [Member]
Statement [Line Items]
Capital Expenditures	1,896
Ferrellgas, L.P. [Member] | Corporate and Other [Member]
Statement [Line Items]
Capital Expenditures	3,902
Ferrellgas, L.P. [Member] | Maintenance Capital Expenditures [Member]
Statement [Line Items]
Capital Expenditures	18,138
Ferrellgas, L.P. [Member] | Maintenance Capital Expenditures [Member] | Propane and related equipment sales [Member]
Statement [Line Items]
Capital Expenditures	14,682
Ferrellgas, L.P. [Member] | Maintenance Capital Expenditures [Member] | Midstream Operations [Member]
Statement [Line Items]
Capital Expenditures	181
Ferrellgas, L.P. [Member] | Maintenance Capital Expenditures [Member] | Corporate and Other [Member]
Statement [Line Items]
Capital Expenditures	3,275
Ferrellgas, L.P. [Member] | Growth Capital Expenditures [Member]
Statement [Line Items]
Capital Expenditures	32,843
Ferrellgas, L.P. [Member] | Growth Capital Expenditures [Member] | Propane and related equipment sales [Member]
Statement [Line Items]
Capital Expenditures	30,501
Ferrellgas, L.P. [Member] | Growth Capital Expenditures [Member] | Midstream Operations [Member]
Statement [Line Items]
Capital Expenditures	1,715
Ferrellgas, L.P. [Member] | Growth Capital Expenditures [Member] | Corporate and Other [Member]
Statement [Line Items]
Capital Expenditures	$ 627