Transactions With Related Parties (Schedule Of Transactions With Related Parties) (Details) (USD $)	3 Months Ended		9 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013
Related Party Transaction [Line Items]
General and administrative expense	$ 16,860,000	$ 15,232,000	$ 47,749,000	$ 39,104,000
Ferrellgas, L.P. [Member]
Related Party Transaction [Line Items]
General and administrative expense	16,860,000	15,232,000	47,749,000	39,104,000
Compensation And Benefits [Member]
Related Party Transaction [Line Items]
Operating expense	55,458,000	55,374,000	165,028,000	156,752,000
General and administrative expense	9,233,000	10,252,000	24,334,000	23,708,000
Compensation And Benefits [Member] | Ferrellgas, L.P. [Member]
Related Party Transaction [Line Items]
Operating expense	55,458,000	55,374,000	165,028,000	156,752,000
General and administrative expense	$ 9,233,000	$ 10,252,000	$ 24,334,000	$ 23,708,000