Summary Of Significant Accounting Policies (Significant Cash And Non-Cash Activities) (Details) (USD $) In Thousands	12 Months Ended
	Jul. 31, 2011	Jul. 31, 2010	Jul. 31, 2009
Interest	$ 94,553	$ 90,305	$ 83,107
Income taxes	591	1,550	1,512
Issuance of common units in connection with acquisitions	2,940	3,061	5,465
Issuance of liabilities in connection with acquisitions	2,290	5,494	1,673
Property, plant and equipment additions	807	593	973
Ferrellgas, L.P. And Subsidiaries [Member]
Interest	72,211	66,223	59,626
Income taxes	575	1,524	1,374
Assets contributed from Ferrellgas Partners in connection with acquisitions	2,940	3,061	5,515
Issuance of liabilities in connection with acquisitions	2,290	5,494	1,673
Property, plant and equipment additions	$ 807	$ 593	$ 973