Accounts And Notes Receivable, Net And Accounts Receivable Securitization (Accounts And Notes Receivable) (Details) - USD ($) $ in Thousands	Jan. 31, 2018	Jul. 31, 2017
Accounts receivable pledged as collateral	$ 235,150	$ 109,407
Accounts receivable	13,596	47,346
Notes Receivable, Related Parties, Current	10,000	10,000
Other	284	307
Less: Allowance for doubtful accounts	(3,052)	(1,976)
Accounts and notes receivable, net	255,978	165,084
Ferrellgas, L.P. [Member]
Accounts receivable pledged as collateral	235,150	109,407
Accounts receivable	13,596	47,346
Notes Receivable, Related Parties, Current	10,000	10,000
Other	284	307
Less: Allowance for doubtful accounts	(3,052)	(1,976)
Accounts and notes receivable, net	$ 255,978	$ 165,084