Consolidated Statements Of Earnings - USD ($)	3 Months Ended
	Oct. 31, 2017	Oct. 31, 2016
Revenues:
Propane and other gas liquids sales	$ 302,758,000	$ 242,399,000
Midstream operations	120,760,000	108,044,000
Other	31,137,000	29,099,000
Total revenues	454,655,000	379,542,000
Costs and expenses:
Cost of sales - propane and other gas liquids sales	179,515,000	119,212,000
Cost of sales - midstream operations	108,125,000	94,642,000
Cost of sales - other	13,702,000	11,746,000
Operating expense	110,462,000	105,086,000
Depreciation and amortization expense	25,732,000	26,202,000
General and administrative expense	13,164,000	14,269,000
Equipment lease expense	6,741,000	7,349,000
Non-cash employee stock ownership plan compensation charge	3,962,000	3,754,000
Loss on disposal of assets and other	895,000	6,423,000
Operating loss	(7,643,000)	(9,141,000)
Interest expense	(40,807,000)	(35,428,000)
Other income, net	511,000	508,000
Loss before income taxes	(47,939,000)	(44,061,000)
Income tax benefit	377,000	(590,000)
Net Earnings (Loss)	(48,316,000)	(43,471,000)
Net earnings attributable to noncontrolling interest	(401,000)	(398,000)
Net earnings attributable to Ferrellgas Partners, L.P.	(47,915,000)	(43,073,000)
Less: General partner's interest in net earnings	(479,000)	(431,000)
Common unitholders' interest in net earnings	$ (47,436,000)	$ (42,642,000)
Basic and diluted net earnings per common unitholders' interest	$ (0.49)	$ (0.44)
Cash distributions declared per common unit	$ 0.10	$ 0.10
Ferrellgas Partners Finance Corp. [Member]
Costs and expenses:
General and administrative expense	$ 50	$ 92
Net Earnings (Loss)	(50)	(92)
Ferrellgas, L.P. [Member]
Revenues:
Propane and other gas liquids sales	302,758,000	242,399,000
Midstream operations	120,760,000	108,044,000
Other	31,137,000	29,099,000
Total revenues	454,655,000	379,542,000
Costs and expenses:
Cost of sales - propane and other gas liquids sales	179,515,000	119,212,000
Cost of sales - midstream operations	108,125,000	94,642,000
Cost of sales - other	13,702,000	11,746,000
Operating expense	110,462,000	105,086,000
Depreciation and amortization expense	25,732,000	26,202,000
General and administrative expense	13,164,000	14,269,000
Equipment lease expense	6,741,000	7,349,000
Non-cash employee stock ownership plan compensation charge	3,962,000	3,754,000
Loss on disposal of assets and other	895,000	6,423,000
Operating loss	(7,643,000)	(9,141,000)
Interest expense	(32,196,000)	(31,398,000)
Other income, net	511,000	508,000
Loss before income taxes	(39,328,000)	(40,031,000)
Income tax benefit	371,000	(591,000)
Net Earnings (Loss)	(39,699,000)	(39,440,000)
Net earnings attributable to Ferrellgas Partners, L.P.	(39,699,000)	(39,440,000)
Ferrellgas Finance Corp. [Member]
Costs and expenses:
General and administrative expense	1,550	1,550
Net Earnings (Loss)	$ (1,550)	$ (1,550)