Summary Of Significant Accounting Policies (Significant Cash And Non-Cash Activities) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Apr. 30, 2015	Apr. 30, 2014
Cash Paid For [Abstract]
Interest	$ 49,021us-gaap_InterestPaid	$ 48,888us-gaap_InterestPaid
Income taxes	333us-gaap_IncomeTaxesPaid	403us-gaap_IncomeTaxesPaid
Non-Cash Investing Activities [Abstract]
Liabilities incurred in connection with acquisitions	0	887
Change in accruals for property, plant and equipment additions	1,316	1,318
Ferrellgas, L.P. [Member]
Cash Paid For [Abstract]
Interest	41,172	40,394
Income taxes	264	358
Non-Cash Investing Activities [Abstract]
Liabilities incurred in connection with acquisitions	0	887
Change in accruals for property, plant and equipment additions	1,316	1,318
Common Unitholders [Member]
Non-Cash Investing Activities [Abstract]
Non-cash issuances of common units in connection with acquisitions	0	1,500
Common Unitholders [Member] \| Ferrellgas, L.P. [Member]
Non-Cash Investing Activities [Abstract]
Non-cash issuances of common units in connection with acquisitions	$ 0	$ 1,500

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (f)

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- Definition

The amount of cash paid for interest during the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

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-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586

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

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-SubTopic 10

-Section 45

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The total amount of [all] liabilities that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

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-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

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-Section 50

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- Definition

Change in the different classes of partners' capital accounts during the year due to acquisitions. Partners include general, limited and preferred partners.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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

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-Name Accounting Standards Codification

-Topic 505

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Amount of acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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