Supplemental Financial Statement Information Supplemental Financial Statement Information (Other Assets) (Details) - USD ($) $ in Thousands	Oct. 31, 2017	Jul. 31, 2017
Accounts Receivable, Related Parties, Noncurrent	$ 30,000	$ 32,500
Other Assets	50,559	41,557
Other Assets, Noncurrent	80,559	74,057
Ferrellgas, L.P. [Member]
Accounts Receivable, Related Parties, Noncurrent	30,000	32,500
Other Assets	50,559	41,557
Other Assets, Noncurrent	$ 80,559	$ 74,057