Significant Accounting Policies [Line Items]

No definition available.

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- Definition

Indicates (true false) whether practical expedient is elected to account for lease component and nonlease component as single lease component.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 3A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=119202524&loc=SL117410129-209981

+ Details

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- Definition

Indicates (true false) whether practical expedients are elected for not reassessing whether any expired or existing contract is or contains lease, lease classification for expired or existing lease, and initial direct cost for any existing lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 10
-Section 65
-Paragraph 1
-Subparagraph (j)
-URI http://asc.fasb.org/extlink&oid=119364159&loc=SL77916155-209984

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 10
-Section 65
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=119364159&loc=SL77916155-209984

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- Definition

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

+ Details

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Summary Of Significant Accounting Policies (New Accounting Standards) (Details) - USD ($) $ in Millions		12 Months Ended
	Aug. 01, 2019	Jul. 31, 2019	Jul. 31, 2018
Significant Accounting Policies [Line Items]
Lease, Practical Expedients, Package [true false]	true
Lease, Practical Expedient, Lessor Single Lease Component [true false]	true
Ferrellgas, L.P. [Member]
Significant Accounting Policies [Line Items]
Lease, Practical Expedients, Package [true false]	true
Lease, Practical Expedient, Lessor Single Lease Component [true false]	true
Ferrellgas Partners LP [Member]
Significant Accounting Policies [Line Items]
General partner ownership interest		2.00%	2.00%
Ferrellgas Partners LP [Member] \| Ferrellgas Inc., General Partner [Member]
Significant Accounting Policies [Line Items]
General partner ownership interest		1.00%
Ferrellgas Partners LP [Member] \| Ferrellgas, L.P. [Member]
Significant Accounting Policies [Line Items]
General partner ownership interest		1.00%
Minimum [Member] \| Accounting Standards Update 2016-02 [Member] \| Restatement Adjustment
Significant Accounting Policies [Line Items]
Operating lease liabilities	$ 120
ROU assets	120
Minimum [Member] \| Ferrellgas, L.P. [Member] \| Accounting Standards Update 2016-02 [Member] \| Restatement Adjustment
Significant Accounting Policies [Line Items]
Operating lease liabilities	120
ROU assets	120
Maximum [Member] \| Accounting Standards Update 2016-02 [Member] \| Restatement Adjustment
Significant Accounting Policies [Line Items]
Operating lease liabilities	140
ROU assets	140
Maximum [Member] \| Ferrellgas, L.P. [Member] \| Accounting Standards Update 2016-02 [Member] \| Restatement Adjustment
Significant Accounting Policies [Line Items]
Operating lease liabilities	140
ROU assets	$ 140