Supplemental Financial Statement Information (Schedule Of Inventories) (Details) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2011	Jul. 31, 2011
Propane gas and related products	$ 161,237	$ 113,826
Appliances, parts and supplies	23,293	22,313
Inventories	184,530	136,139
Ferrellgas, L.P. And Subsidiaries [Member]
Propane gas and related products	161,237	113,826
Appliances, parts and supplies	23,293	22,313
Inventories	$ 184,530	$ 136,139

Carrying amount (lower of cost or market) as of the balance sheet date of inventories less all valuation and other allowances. Excludes noncurrent inventory balances (expected to remain on hand past one year or one operating cycle, if longer).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(a))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 330

-SubTopic 10

-Section 35

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6386567&loc=d3e3927-108312

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section 45

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6361293&loc=d3e6676-107765

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