Condensed Consolidated Statements Of Partners' Capital (USD $)	Ferrellgas Partners Finance Corp. [Member]	Ferrellgas, L.P. [Member] Common Unitholders [Member]	Ferrellgas, L.P. [Member] General Partner [Member]	Ferrellgas, L.P. [Member] Accumulated Other Comprehensive Income	Ferrellgas, L.P. [Member]	Ferrellgas Finance Corp. [Member]	Common Unitholders [Member]	General Partner [Member]	Accumulated Other Comprehensive Income	Ferrellgas Partners', L.P. [Member]	Non-Controlling Interest [Member]	Total
Value at Jul. 31, 2011							$ 139,614,000	$ (58,660,000)	$ 4,633,000	$ 85,587,000	$ 2,730,000	$ 88,317,000
Shares at Jul. 31, 2011							75,966,400	767,300
Contributions in connection with non-cash ESOP and stock and unit-based compensation charges							5,386,000	55,000		5,441,000	55,000	5,496,000
Distributions					(38,758,000)		(37,983,000)	(384,000)		(38,367,000)	(391,000)	(38,758,000)
Comprehensive income (loss):
Net earnings (loss)	(50)				(28,802,000)	(1,500)	(32,278,000)	(326,000)		(32,604,000)	(291,000)	(32,895,000)
Other comprehensive income (loss):
Change in value on risk management derivatives					(2,528,000)				(2,502,000)		(26,000)	(2,528,000)
Reclassification of gains and losses of derivatives to earnings					(1,879,000)				(1,860,000)		(19,000)	(1,879,000)
Foreign currency translation adjustment					2,000				2,000			2,000
Other comprehensive income (loss)					(4,405,000)					(4,360,000)		(4,405,000)
Comprehensive income (loss)										(36,964,000)	(336,000)	(37,300,000)
Value at Oct. 31, 2011							74,739,000	(59,315,000)	273,000	15,697,000	2,058,000	17,755,000
Shares at Oct. 31, 2011							75,966,400	767,300
Value at Jul. 31, 2012	969					1,100
Value at Jul. 31, 2012		164,737,000	1,683,000	(13,280,000)	153,140,000		43,701,000	(59,630,000)	(13,159,000)	(29,088,000)	1,562,000	(27,526,000)
Shares at Jul. 31, 2012							79,006,600	798,000
Contributions in connection with non-cash ESOP and stock and unit-based compensation charges		5,439,000	55,000		5,494,000		5,384,000	55,000		5,439,000	55,000	5,494,000
Distributions		(39,907,000)	(407,000)		(40,314,000)		(39,508,000)	(399,000)		(39,907,000)	(407,000)	(40,314,000)
Common unit options issued - shares							9,000	100
Common unit options issued - value							105,000	1,000		106,000		106,000
Comprehensive income (loss):
Net earnings (loss)	0	(13,554,000)	(138,000)		(13,692,000)	(1,500)	(17,481,000)	(177,000)		(17,658,000)	(138,000)	(17,796,000)
Other comprehensive income (loss):
Change in value on risk management derivatives				6,276,000	6,276,000				6,212,000		64,000	6,276,000
Reclassification of gains and losses of derivatives to earnings				4,191,000	4,191,000				4,150,000		41,000	4,191,000
Foreign currency translation adjustment				2,000	2,000				2,000			2,000
Other comprehensive income (loss)					10,469,000					10,364,000		10,469,000
Comprehensive income (loss)					(3,223,000)					(7,294,000)	(33,000)	(7,327,000)
Value at Oct. 31, 2012	969					1,100
Value at Oct. 31, 2012		$ 116,715,000	$ 1,193,000	$ (2,811,000)	$ 115,097,000		$ (7,799,000)	$ (60,150,000)	$ (2,795,000)	$ (70,744,000)	$ 1,177,000	$ (69,567,000)
Shares at Oct. 31, 2012							79,015,600	798,100