Condensed Consolidated Statements Of Earnings (USD $)	3 Months Ended
	Oct. 31, 2011	Oct. 31, 2010
Revenues:
Propane and other gas liquids sales	$ 514,219,000	$ 368,623,000
Other	24,207,000	31,569,000
Total revenues	538,426,000	400,192,000
Costs and expenses:
Cost of product sold - propane and other gas liquids sales	403,122,000	256,486,000
Cost of product sold - other	6,626,000	12,858,000
Operating expense (includes $1.2 million and $0.1 million for the three months ended October 31, 2011 and 2010, respectively, for non-cash stock and unit-based compensation)	100,578,000	95,396,000
Depreciation and amortization expense	20,674,000	20,375,000
General and administrative expense (includes $1.7 million and $0.9 million for the three months ended October 31, 2011 and 2010, respectively, for non-cash stock and unit-based compensation)	11,114,000	11,264,000
Equipment lease expense	3,529,000	3,649,000
Non-cash employee stock ownership plan compensation charge	2,579,000	2,444,000
Loss (gain) on disposal of assets	309,000	(232,000)
Operating loss	(10,105,000)	(2,048,000)
Interest expense	(23,387,000)	(26,877,000)
Other income (expense), net	(33,000)	178,000
Loss before income taxes	(33,525,000)	(28,747,000)
Income tax benefit	(630,000)	(482,000)
Net loss	(32,895,000)	(28,265,000)
Net loss attributable to noncontrolling interest	(291,000)	(222,000)
Net loss attributable to Ferrellgas Partners, L.P.	(32,604,000)	(28,043,000)
Less: General partner's interest in net loss	(326,000)	(280,000)
Common unitholders' interest in net loss	(32,278,000)	(27,763,000)
Basic and diluted net loss per common unitholders' interest	$ (0.42)	$ (0.40)
Cash distributions declared per common unit	$ 0.50	$ 0.50
Ferrellgas Partners Finance Corp. [Member]
Costs and expenses:
General and administrative expense (includes $1.7 million and $0.9 million for the three months ended October 31, 2011 and 2010, respectively, for non-cash stock and unit-based compensation)	50	90
Net loss	(50)	(90)
Ferrellgas, L.P. And Subsidiaries [Member]
Revenues:
Propane and other gas liquids sales	514,219,000	368,623,000
Other	24,207,000	31,569,000
Total revenues	538,426,000	400,192,000
Costs and expenses:
Cost of product sold - propane and other gas liquids sales	403,122,000	256,486,000
Cost of product sold - other	6,626,000	12,858,000
Operating expense (includes $1.2 million and $0.1 million for the three months ended October 31, 2011 and 2010, respectively, for non-cash stock and unit-based compensation)	100,516,000	95,327,000
Depreciation and amortization expense	20,674,000	20,375,000
General and administrative expense (includes $1.7 million and $0.9 million for the three months ended October 31, 2011 and 2010, respectively, for non-cash stock and unit-based compensation)	11,114,000	11,264,000
Equipment lease expense	3,529,000	3,649,000
Non-cash employee stock ownership plan compensation charge	2,579,000	2,444,000
Loss (gain) on disposal of assets	309,000	(232,000)
Operating loss	(10,043,000)	(1,979,000)
Interest expense	(19,357,000)	(20,680,000)
Other income (expense), net	(33,000)	178,000
Loss before income taxes	(29,433,000)	(22,481,000)
Income tax benefit	(631,000)	(482,000)
Net loss	(28,802,000)	(21,999,000)
Ferrellgas Finance Corp. [Member]
Costs and expenses:
General and administrative expense (includes $1.7 million and $0.9 million for the three months ended October 31, 2011 and 2010, respectively, for non-cash stock and unit-based compensation)	1,500	3,050
Net loss	$ (1,500)	$ (3,050)