Business Combinations (Schedule Of Funding Of Acquisitions) (Details) - USD ($) $ in Thousands	12 Months Ended
Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015
Propane and related equipment sales [Member]
Payments to Acquire Businesses, Gross	$ 3,539	$ 4,476	$ 4,250
Issuance of liabilities and other costs and considerations	856	2,126	481
Common units, net of issuance cost	0	0	3,000
Aggregate fair value of transactions	4,395	6,602	7,731
Aggregate fair value of transactions	4,395	6,602	7,731
Propane and related equipment sales [Member] \| Ferrellgas, L.P. [Member]
Payments to Acquire Businesses, Gross	3,539	4,476	4,250
Issuance of liabilities and other costs and considerations	856	2,126	481
Common units, net of issuance cost	0	0	3,000
Aggregate fair value of transactions	4,395	6,602	7,731
Aggregate fair value of transactions	$ 4,395	$ 6,602	7,731
Midstream Operations - Water Solutions [Member]
Payments to Acquire Businesses, Gross			74,677
Aggregate fair value of transactions			74,677
Midstream Operations - Water Solutions [Member] \| Ferrellgas, L.P. [Member]
Payments to Acquire Businesses, Gross			74,677
Aggregate fair value of transactions			$ 74,677

Business Acquisition Cost Of Acquired Entity Issuance Of Liabilities And Other Costs

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477

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- Definition

Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

+ References

+ Details

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- Definition

Amount recognized as of the acquisition date for the assets, including goodwill, in excess of (less than) the aggregate liabilities assumed, less the noncontrolling interest in the acquiree.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

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