Fair Value Measurements (Assets And Liabilities Fair Value Hierarchy) (Details) - USD ($) $ in Thousands	Oct. 31, 2016	Jul. 31, 2016
Interest rate swap assets	$ 4,133	$ 5,830
Propane commodity derivative assets	6,672	8,241
Interest rate swap liabilities	(2,645)	(3,553)
Propane commodity derivative liabilities	(6,482)	(17,689)
Ferrellgas, L.P. [Member]
Interest rate swap assets	4,133	5,830
Propane commodity derivative assets	6,672	8,241
Interest rate swap liabilities	(2,645)	(3,553)
Propane commodity derivative liabilities	(6,482)	(17,689)
Fair Value, Inputs, Level 2 [Member]
Interest rate swap assets	4,133	5,830
Propane commodity derivative assets	6,672	8,241
Interest rate swap liabilities	(2,645)	(3,553)
Propane commodity derivative liabilities	(6,482)	(17,689)
Fair Value, Inputs, Level 2 [Member] \| Ferrellgas, L.P. [Member]
Interest rate swap assets	4,133	5,830
Propane commodity derivative assets	6,672	8,241
Interest rate swap liabilities	(2,645)	(3,553)
Propane commodity derivative liabilities	$ (6,482)	$ (17,689)

Fair value as of the balance sheet date of interest rate derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13433-108611

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Fair value as of the balance sheet date of price risk derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets on the balance sheet.

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