Supplemental Financial Statement Information Supplemental Financial Statement Information (Other Assets) (Details) - USD ($) $ in Thousands	Jan. 31, 2017	Jul. 31, 2016
Accounts Receivable, Related Parties, Noncurrent	$ 37,500	$ 39,800
Other Assets	49,528	47,463
Other Assets, Noncurrent	87,028	87,223
Ferrellgas, L.P. [Member]
Accounts Receivable, Related Parties, Noncurrent	37,500	39,800
Other Assets	49,528	47,463
Other Assets, Noncurrent	$ 87,028	$ 87,223