Summary Of Significant Accounting Policies (Significant Cash And Non-Cash Activities) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Cash Paid For [Abstract]
Interest	$ 84,030	$ 88,696	$ 94,553
Income taxes	550	764	591
Non-Cash Investing Activities [Abstract]
Issuance of common units in connection with acquisitions		1,326	2,999
Liabilities incurred in connection with acquisitions	2,035	2,321	2,290
Change in accruals for property, plant and equipment additions	533	233	807
Ferrellgas, L.P. [Member]
Cash Paid For [Abstract]
Interest	68,334	72,999	72,211
Income taxes	534	756	575
Non-Cash Investing Activities [Abstract]
Issuance of common units in connection with acquisitions		1,313	2,970
Liabilities incurred in connection with acquisitions	2,035	2,321	2,290
Change in accruals for property, plant and equipment additions	533	233	807
Common Unitholders [Member]
Non-Cash Investing Activities [Abstract]
Issuance of common units in connection with acquisitions	0	1,300	2,940
Common Unitholders [Member] | Ferrellgas, L.P. [Member]
Non-Cash Investing Activities [Abstract]
Issuance of common units in connection with acquisitions	$ 0	$ 1,300	$ 2,940