Schedule II Valuation And Qualifying Accounts (Details) (Allowance For Doubtful Accounts [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2012
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	$ 3,607	$ 3,812	$ 4,310
Charged to cost / expenses	3,419	2,066	4,822
Other	(2,270)	(2,271)	(5,320)
Balance at end of period	4,756	3,607	3,812
Ferrellgas, L.P. [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	3,607	3,812	4,310
Charged to cost / expenses	3,419	2,066	4,822
Other	(2,270)	(2,271)	(5,320)
Balance at end of period	$ 4,756	$ 3,607	$ 3,812