Summary Of Significant Accounting Policies (Significant Cash And Non-Cash Activities) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jan. 31, 2013	Jan. 31, 2012
Interest	$ 42,646	$ 44,799
Income taxes	45	90
Issuance of common units in connection with acquisitions	0	1,300
Liabilities incurred in connection with acquisitions	1,060	2,321
Changes in accruals for property, plant and equipment additions	598	979
Ferrellgas, L.P. [Member]
Interest	34,797	36,951
Income taxes	45	89
Issuance of common units in connection with acquisitions	0	1,300
Liabilities incurred in connection with acquisitions	1,060	2,321
Changes in accruals for property, plant and equipment additions	$ 598	$ 979