Condensed Consolidated Statements Of Partners' Capital (USD $)	Total	Accumulated Other Comprehensive Income (Loss) [Member]	Ferrellgas Partners', L.P. partners' capital (deficit) [Member]	Non-controlling interest [Member]	Common unitholders [Member]	General Partner [Member]	Ferrellgas, L.P. [Member]	Ferrellgas, L.P. [Member] Accumulated Other Comprehensive Income (Loss) [Member]	Ferrellgas, L.P. [Member] Common unitholders [Member]	Ferrellgas, L.P. [Member] General Partner [Member]
Partners' capital - value at Jul. 31, 2012	$ (27,526,000)	$ (13,159,000)	$ (29,088,000)	$ 1,562,000	$ 43,701,000	$ (59,630,000)	$ 153,140,000	$ (13,280,000)	$ 164,737,000	$ 1,683,000
Partners' capital - shares at Jul. 31, 2012					79,006,600	798,000
Contributions in connection with ESOP and stock and unit-based compensation charges	16,061,000		15,898,000	163,000	15,739,000	159,000	16,061,000		15,898,000	163,000
Distributions	(80,708,000)		(79,814,000)	(894,000)	(79,016,000)	(798,000)	(88,557,000)		(87,663,000)	(894,000)
Common unit options issued - value	106,000		106,000	0	105,000	1,000
Common unit options issued - shares					9,000	100
Comprehensive income (loss):
Net earnings (loss)	41,047,000		40,549,000	498,000	40,144,000	405,000	49,261,000		48,763,000	498,000
Other comprehensive income (loss)	8,699,000	8,612,000	8,612,000	87,000			8,699,000	8,699,000
Comprehensive income (loss)	49,746,000		49,161,000	585,000			57,960,000
Partners' capital - value at Jan. 31, 2013	(42,321,000)	(4,547,000)	(43,737,000)	1,416,000	20,673,000	(59,863,000)	138,604,000	(4,581,000)	141,735,000	1,450,000
Partners' capital - shares at Jan. 31, 2013					79,015,600	798,100
Partners' capital - value at Oct. 31, 2012
Distributions							(48,243,000)
Comprehensive income (loss):
Net earnings (loss)	58,843,000						62,953,000
Other comprehensive income (loss)	(1,770,000)						(1,770,000)
Comprehensive income (loss)	57,073,000						61,183,000
Partners' capital - value at Jan. 31, 2013	$ (42,321,000)						$ 138,604,000