Consolidated Statements Of Partners' Capital (Deficit) (USD $)	Total	Accumulated Other Comprehensive Income (Loss)	Total Ferrellgas Partners, L.P. Partners' Capital (Deficit) [Member]	Non-Controlling Interest [Member]	Common Unitholders [Member]	General Partner Unitholder [Member]	Ferrellgas Partners Finance Corp. [Member]	Ferrellgas Partners Finance Corp. [Member] Common Stock [Member]	Ferrellgas Partners Finance Corp. [Member] Additional Paid-in Capital [Member]	Ferrellgas Partners Finance Corp. [Member] Accumulated deficit [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]	Ferrellgas Finance Corp. [Member]	Ferrellgas Finance Corp. [Member] Common Stock [Member]	Ferrellgas Finance Corp. [Member] Additional Paid-in Capital [Member]	Ferrellgas Finance Corp. [Member] Accumulated deficit [Member]
Stockholders' equity balance at Jul. 31, 2010							$ 969	$ 1,000	$ 6,131	$ (6,162)					$ 1,100	$ 1,000	$ 27,219	$ (27,119)
Partners' capital balance at Jul. 31, 2010	85,902,000	(415,000)	82,222,000	3,680,000	141,281,000	(58,644,000)					363,047,000	(406,000)	359,782,000	3,671,000
Partners' capital balance (in shares) at Jul. 31, 2010					69,521,800	702,200
Stockholders' equity balance (in shares) at Jul. 31, 2010								1,000								1,000
Increase (Decrease) in Partners' Capital [Roll Forward]
Contributions in connection with non-cash ESOP and stock and unit-based compensation charges	23,645,000		23,406,000	239,000	23,171,000	235,000					23,645,000		23,406,000	239,000
Distributions	(147,785,000)		(145,002,000)	(2,783,000)	(143,552,000)	(1,450,000)					(275,560,000)		(272,777,000)	(2,783,000)
Common units issued in connection with acquisitions - shares					122,600	1,200
Common units issued in connection with acquisitions - value	2,999,000		2,969,000	30,000	2,940,000	29,000					2,970,000		2,940,000	30,000
Exercise of common unit options - shares					46,900	500
Exercise of common unit options - value	553,000		550,000	3,000	544,000	6,000
Common units issued in offering, net of issuance costs - shares					6,275,100	63,400
Common units issued in offering, net of issuance costs - value	160,408,000		158,800,000	1,608,000	157,212,000	1,588,000
Net earnings (loss)	(43,760,000)		(43,648,000)	(112,000)	(43,212,000)	(436,000)	(2,789)		0	(2,789)	(11,062,000)		(10,950,000)	(112,000)	(8,163)		0	(8,163)
Cumulative effect of change in accounting principle	1,255,000		1,242,000	13,000	1,230,000	12,000					1,255,000		1,242,000	13,000
Other comprehensive income (loss)	5,100,000	5,048,000	5,048,000	52,000							5,100,000	5,100,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Capital contribution							2,789		2,789	0					8,163		8,163	0
Cash contributed by Ferrellgas Partners and general partner											159,291,000		157,680,000	1,611,000
Stockholders' equity balance at Jul. 31, 2011							969	1,000	8,920	(8,951)					1,100	1,000	35,382	(35,282)
Partners' capital balance at Jul. 31, 2011	88,317,000	4,633,000	85,587,000	2,730,000	139,614,000	(58,660,000)					268,686,000	4,694,000	261,323,000	2,669,000
Partners' capital balance (in shares) at Jul. 31, 2011					75,966,400	767,300
Stockholders' equity balance (in shares) at Jul. 31, 2011								1,000								1,000
Increase (Decrease) in Partners' Capital [Roll Forward]
Net earnings (loss)	(32,895,000)										(28,802,000)
Stockholders' equity balance at Oct. 31, 2011
Stockholders' equity balance at Jul. 31, 2011							969	1,000	8,920	(8,951)					1,100	1,000	35,382	(35,282)
Partners' capital balance at Jul. 31, 2011	88,317,000	4,633,000	85,587,000	2,730,000	139,614,000	(58,660,000)					268,686,000	4,694,000	261,323,000	2,669,000
Partners' capital balance (in shares) at Jul. 31, 2011					75,966,400	767,300
Stockholders' equity balance (in shares) at Jul. 31, 2011								1,000								1,000
Increase (Decrease) in Partners' Capital [Roll Forward]
Contributions in connection with non-cash ESOP and stock and unit-based compensation charges	18,283,000		18,099,000	184,000	17,918,000	181,000					18,283,000		18,099,000	184,000
Distributions	(158,277,000)		(156,520,000)	(1,757,000)	(154,955,000)	(1,565,000)					(173,975,000)		(172,218,000)	(1,757,000)
Common units issued in connection with acquisitions - shares					68,200	700
Common units issued in connection with acquisitions - value	1,326,000		1,313,000	13,000	1,300,000	13,000					1,313,000		1,300,000	13,000
Exercise of common unit options - shares					76,600	700
Exercise of common unit options - value	908,000		900,000	8,000	891,000	9,000
Common units issued in offering, net of issuance costs - shares					2,895,400	29,300
Common units issued in offering, net of issuance costs - value	50,787,000		50,277,000	510,000	49,775,000	502,000
Net earnings (loss)	(10,896,000)		(10,952,000)	56,000	(10,842,000)	(110,000)	(1,999)		0	(1,999)	5,589,000		5,533,000	56,000	(3,489)		0	(3,489)
Cumulative effect of change in accounting principle	0										0
Other comprehensive income (loss)	(17,974,000)	(17,792,000)	(17,792,000)	(182,000)							(17,974,000)	(17,974,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Capital contribution							1,999		1,999	0					3,489		3,489	0
Cash contributed by Ferrellgas Partners and general partner											51,218,000		50,700,000	518,000
Stockholders' equity balance at Jul. 31, 2012							969	1,000	10,919	(10,950)					1,100	1,000	38,871	(38,771)
Partners' capital balance 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 balance (in shares) at Jul. 31, 2012					79,006,600	798,000
Stockholders' equity balance (in shares) at Jul. 31, 2012								1,000								1,000
Stockholders' equity balance at Apr. 30, 2012
Increase (Decrease) in Partners' Capital [Roll Forward]
Net earnings (loss)	(35,850,000)										(31,746,000)
Stockholders' equity balance at Jul. 31, 2012								1,000								1,000
Partners' capital balance at Jul. 31, 2012	(27,526,000)										153,140,000
Stockholders' equity balance (in shares) at Jul. 31, 2012								1,000								1,000
Increase (Decrease) in Partners' Capital [Roll Forward]
Net earnings (loss)	(17,796,000)										(13,692,000)
Stockholders' equity balance at Oct. 31, 2012
Stockholders' equity balance at Jul. 31, 2012							969	1,000	10,919	(10,950)					1,100	1,000	38,871	(38,771)
Partners' capital balance 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 balance (in shares) at Jul. 31, 2012					79,006,600	798,000
Stockholders' equity balance (in shares) at Jul. 31, 2012								1,000								1,000
Increase (Decrease) in Partners' Capital [Roll Forward]
Contributions in connection with non-cash ESOP and stock and unit-based compensation charges	29,314,000		29,019,000	295,000	28,728,000	291,000					29,314,000		29,019,000	295,000
Distributions	(161,472,000)		(159,682,000)	(1,790,000)	(158,086,000)	(1,596,000)					(177,170,000)		(175,380,000)	(1,790,000)
Common units issued in connection with acquisitions - value					0								0
Exercise of common unit options - shares					66,200	700
Exercise of common unit options - value	882,000		873,000	9,000	864,000	9,000
Net earnings (loss)	57,167,000		56,426,000	741,000	55,862,000	564,000	(2,038)		0	(2,038)	73,375,000		72,634,000	741,000	(4,999)		0	(4,999)
Cumulative effect of change in accounting principle	0										0
Other comprehensive income (loss)	15,008,000	14,856,000	14,856,000	152,000							15,008,000	15,008,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Capital contribution							2,038		2,038	0					4,999		4,999	0
Cash contributed by Ferrellgas Partners and general partner											809,000		800,000	9,000
Stockholders' equity balance at Jul. 31, 2013							969	1,000	12,957	(12,988)					1,100	1,000	43,870	(43,770)
Partners' capital balance at Jul. 31, 2013	(86,627,000)	1,697,000	(87,596,000)	969,000	(28,931,000)	(60,362,000)					94,476,000	1,728,000	91,810,000	938,000
Partners' capital balance (in shares) at Jul. 31, 2013					79,072,800	798,700
Stockholders' equity balance (in shares) at Jul. 31, 2013								1,000								1,000
Stockholders' equity balance at Apr. 30, 2013
Increase (Decrease) in Partners' Capital [Roll Forward]
Net earnings (loss)	(29,060,000)										(25,282,000)
Stockholders' equity balance at Jul. 31, 2013								1,000								1,000
Partners' capital balance at Jul. 31, 2013	$ (86,627,000)										$ 94,476,000
Stockholders' equity balance (in shares) at Jul. 31, 2013								1,000								1,000