Consolidated Statements Of Partners' Capital (Deficit) (USD $)	Total	Accumulated Other Comprehensive Income (Loss)	Total Ferrellgas Partners, L.P. Partners' Capital (Deficit) [Member]	Noncontrolling Interest [Member]	Common Unitholders [Member]	General Partner Unitholder [Member]	Ferrellgas, L.P. [Member]	Ferrellgas, L.P. [Member] Accumulated Other Comprehensive Income (Loss)	Ferrellgas, L.P. [Member] Common Unitholders [Member]	Ferrellgas, L.P. [Member] General Partner Unitholder [Member]
Partners' capital balance at Jul. 31, 2014	$ (111,646,000)	$ 6,181,000	$ (112,366,000)	$ 720,000	$ (57,893,000)	$ (60,654,000)	$ 69,925,000	$ 6,258,000	$ 63,024,000	$ 643,000
Partners' capital balance (in units) at Jul. 31, 2014					81,228,200	820,500
Increase (Decrease) in Partners' Capital [Roll Forward]
Contributions in connection with non-cash ESOP and stock and unit-based compensation charges	24,592,000		24,344,000	248,000	24,100,000	244,000	24,592,000		24,344,000	248,000
Distributions	(84,483,000)		(83,551,000)	(932,000)	(82,715,000)	(836,000)	(92,332,000)		(91,400,000)	(932,000)
Issuance of common units in connection with acquisitions - units					1,489,400	15,000
Issuance of common units in connection with acquisitions - value	42,895,000		42,464,000	431,000	42,039,000	425,000
Contributions from partners							42,655,000		42,224,000	431,000
Net earnings	53,202,000		52,583,000	619,000	52,057,000	526,000	61,272,000		60,653,000	619,000
Other comprehensive income (loss)	(52,595,000)	(52,064,000)	(52,064,000)	(531,000)			(52,595,000)	(52,595,000)
Partners' capital balance at Jan. 31, 2015	(128,035,000)	(45,883,000)	(128,590,000)	555,000	(22,412,000)	(60,295,000)	53,517,000	(46,337,000)	98,845,000	1,009,000
Partners' capital balance (in units) at Jan. 31, 2015					82,717,600	835,500
Partners' capital balance at Oct. 31, 2014
Increase (Decrease) in Partners' Capital [Roll Forward]
Net earnings	86,371,000						90,409,000
Other comprehensive income (loss)	(37,568,000)						(37,568,000)
Partners' capital balance at Jan. 31, 2015	$ (128,035,000)						$ 53,517,000