Consolidated Statements Of Partners' Capital (Deficit) (USD $)	3 Months Ended
	Oct. 31, 2013	Oct. 31, 2013
Increase (Decrease) in Partners' Capital [Roll Forward]
Partners' capital balance	$ (86,627,000)	$ (134,893,000)
Contributions in connection with non-cash ESOP and stock and unit-based compensation charges	7,474,000
Distributions	(40,343,000)
Exercise of common unit options - value	106,000
Net loss	(25,057,000)
Other comprehensive income	9,554,000
Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Partners' Capital [Roll Forward]
Partners' capital balance	1,697,000	11,155,000
Other comprehensive income	9,458,000
Total Ferrellgas Partners, L.P. Partners' Capital (Deficit) [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Partners' capital balance	(87,596,000)	(135,412,000)
Contributions in connection with non-cash ESOP and stock and unit-based compensation charges	7,398,000
Distributions	(39,935,000)
Exercise of common unit options - value	106,000
Net loss	(24,843,000)
Other comprehensive income	9,458,000
Non-Controlling Interest [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Partners' capital balance	969,000	519,000
Contributions in connection with non-cash ESOP and stock and unit-based compensation charges	76,000
Distributions	(408,000)
Exercise of common unit options - value	0
Net loss	(214,000)
Other comprehensive income	96,000
Common Unitholders [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Partners' capital balance (in shares)	79,072,800	79,081,800
Partners' capital balance	(28,931,000)	(85,633,000)
Contributions in connection with non-cash ESOP and stock and unit-based compensation charges	7,324,000
Distributions	(39,536,000)
Exercise of common unit options - shares	9,000
Exercise of common unit options - value	105,000
Net loss	(24,595,000)
General Partner Unitholder [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Partners' capital balance (in shares)	798,700	798,800
Partners' capital balance	(60,362,000)	(60,934,000)
Contributions in connection with non-cash ESOP and stock and unit-based compensation charges	74,000
Distributions	(399,000)
Exercise of common unit options - shares	100
Exercise of common unit options - value	1,000
Net loss	(248,000)
Ferrellgas, L.P. [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Partners' capital balance	94,476,000	50,023,000
Contributions in connection with non-cash ESOP and stock and unit-based compensation charges	7,474,000
Distributions	(40,343,000)
Net loss	(21,138,000)
Other comprehensive income	9,554,000
Ferrellgas, L.P. [Member] | Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Partners' Capital [Roll Forward]
Partners' capital balance	1,728,000	11,282,000
Contributions in connection with non-cash ESOP and stock and unit-based compensation charges	0
Distributions	0
Net loss	0
Other comprehensive income	9,554,000
Ferrellgas, L.P. [Member] | Common Unitholders [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Partners' capital balance	91,810,000	38,349,000
Contributions in connection with non-cash ESOP and stock and unit-based compensation charges	7,398,000
Distributions	(39,935,000)
Net loss	(20,924,000)
Other comprehensive income	0
Ferrellgas, L.P. [Member] | General Partner Unitholder [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Partners' capital balance	938,000	392,000
Contributions in connection with non-cash ESOP and stock and unit-based compensation charges	76,000
Distributions	(408,000)
Net loss	(214,000)
Other comprehensive income	$ 0