Accounts And Notes Receivable, Net And Accounts Receivable Securitization (Accounts And Notes Receivable) (Details) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2012	Jul. 31, 2012
Accounts receivable pledged as collateral	$ 139,433	$ 121,812
Accounts receivable	11,265	5,788
Other	414	216
Less: Allowance for doubtful accounts	(4,166)	(3,812)
Accounts and notes receivable, net	146,946	124,004
Ferrellgas, L.P. [Member]
Accounts receivable pledged as collateral	139,433	121,812
Accounts receivable	11,265	5,788
Other	414	216
Less: Allowance for doubtful accounts	(4,166)	(3,812)
Accounts and notes receivable, net	$ 146,946	$ 124,004