Accounts And Notes Receivable, Net (Accounts And Notes Receivable) (Details) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2011	Jul. 31, 2011
Accounts receivable pledged as collateral	$ 139,451	$ 112,509
Accounts receivable	70,215	51,104
Other	228	229
Less: Allowance for doubtful accounts	(4,286)	(4,310)
Accounts and notes receivable, net	205,608	159,532
Ferrellgas, L.P. And Subsidiaries [Member]
Accounts receivable pledged as collateral	139,451	112,509
Accounts receivable	70,215	51,104
Other	228	229
Less: Allowance for doubtful accounts	(4,286)	(4,310)
Accounts and notes receivable, net	$ 205,608	$ 159,532