Segment Reporting Segment Reporting (Schedule of Segment Reporting Information, by Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Apr. 30, 2015	Apr. 30, 2015
Segment Reporting Information
Revenues	$ 532,551	$ 1,641,879
Costs and Expenses	436,278	1,374,317
Adjusted EBITDA	96,273	267,562
Propane and related equipment sales [Member]
Segment Reporting Information
Revenues	527,258	1,621,517
Costs and Expenses	422,837	1,329,648
Adjusted EBITDA	104,421	291,869
Midstream Operations [Member]
Segment Reporting Information
Revenues	5,293	20,362
Costs and Expenses	4,871	14,741
Adjusted EBITDA	422	5,621
Corporate and Other [Member]
Segment Reporting Information
Revenues	0	0
Costs and Expenses	8,570	29,928
Adjusted EBITDA	(8,570)	(29,928)
Ferrellgas, L.P. [Member]
Segment Reporting Information
Revenues	532,551	1,641,879
Costs and Expenses	436,192	1,374,234
Adjusted EBITDA	96,359	267,645
Ferrellgas, L.P. [Member] | Propane and related equipment sales [Member]
Segment Reporting Information
Revenues	527,258	1,621,517
Costs and Expenses	422,751	1,329,565
Adjusted EBITDA	104,507	291,952
Ferrellgas, L.P. [Member] | Midstream Operations [Member]
Segment Reporting Information
Revenues	5,293	20,362
Costs and Expenses	4,871	14,741
Adjusted EBITDA	422	5,621
Ferrellgas, L.P. [Member] | Corporate and Other [Member]
Segment Reporting Information
Revenues	0	0
Costs and Expenses	8,570	29,928
Adjusted EBITDA	$ (8,570)	$ (29,928)