Summary Of Significant Accounting Policies (Significant Cash And Non-Cash Activities) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Oct. 31, 2011	Oct. 31, 2010
Interest	$ 16,817	$ 17,065
Income taxes	3	0
Issuance of common units in connection with acquisitions	0	1,625
Issuance of liabilities in connection with acquisitions	952	538
Property, plant and equipment additions	642	474
Ferrellgas, L.P. And Subsidiaries [Member]
Interest	16,817	17,065
Income taxes	2	0
Assets contributed from Ferrellgas Partners in connection with acquisitions	0	1,625
Issuance of liabilities in connection with acquisitions	952	538
Property, plant and equipment additions	$ 642	$ 474