Accounts And Notes Receivable, Net And Accounts Receivable Securitization (Accounts And Notes Receivable) (Details) - USD ($) $ in Thousands	Apr. 30, 2018	Jul. 31, 2017
Accounts receivable pledged as collateral	$ 182,486	$ 109,407
Accounts receivable	13,131	47,346
Notes Receivable, Related Parties, Current	10,000	10,000
Other	232	307
Less: Allowance for doubtful accounts	(3,122)	(1,976)
Accounts and notes receivable, net	202,727	165,084
Ferrellgas, L.P. [Member]
Accounts receivable pledged as collateral	182,486	109,407
Accounts receivable	13,131	47,346
Notes Receivable, Related Parties, Current	10,000	10,000
Other	232	307
Less: Allowance for doubtful accounts	(3,122)	(1,976)
Accounts and notes receivable, net	$ 202,727	$ 165,084