Schedule II Valuation And Qualifying Accounts (Details) - USD ($) $ in Thousands			12 Months Ended
	Jul. 01, 2020	Jun. 25, 2018	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2018
Jamex Marketing, LLC [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Note receivable, original principal amount		$ 18,300
Notes receivable, payment due	$ 2,500
Notes receivable, amount reserved			$ 17,300
Notes receivable, current			12,500
Allowance For Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period			2,463	$ 2,455	$ 1,976
Charged to cost / expenses			2,279	1,525	1,778
Other			9,382	(1,517)	(1,299)
Balance at end of period			14,124	2,463	2,455
Ferrellgas, L.P. [Member] | Jamex Marketing, LLC [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Note receivable, original principal amount		$ 18,300
Notes receivable, payment due	$ 2,500
Notes receivable, amount reserved			17,300
Notes receivable, current			12,500
Ferrellgas, L.P. [Member] | Allowance For Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period			2,463	2,455	1,976
Charged to cost / expenses			2,279	1,525	1,778
Other			9,382	(1,517)	(1,299)
Balance at end of period			$ 14,124	$ 2,463	$ 2,455