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Note 12 - Reduction of Inventory to Fair Value - Inventory Impairments by Homebuilding Segment (Details) $ in Millions		12 Months Ended
		Oct. 31, 2017 USD ($)	Oct. 31, 2016 USD ($)	Oct. 31, 2015 USD ($)
Dollar amount of impairment		$ 15.1	$ 24.5	$ 7.3
Homebuilding [Member]
Number of communities		10	20	12
Dollar amount of impairment		$ 15.1	$ 24.5	$ 7.3
Pre-impairment value	[1]	$ 52.9	$ 88.4	$ 29.4
Homebuilding [Member] | Northeast [Member]
Number of communities		2	5	2
Dollar amount of impairment		$ 3.3	$ 9.5	$ 0.8
Pre-impairment value	[1]	$ 22.2	$ 33.8	$ 0.9
Homebuilding [Member] | Mid-Atlantic [Member]
Number of communities		1		1
Dollar amount of impairment		$ 1.5		$ 0.9
Pre-impairment value	[1]	$ 8.5		$ 2.5
Homebuilding [Member] | Midwest [Member]
Number of communities		2	12	4
Dollar amount of impairment		$ 0.2	$ 13.5	$ 1.3
Pre-impairment value	[1]	$ 0.8	$ 43.7	$ 8.4
Homebuilding [Member] | Southeast [Member]
Number of communities		3	3	4
Dollar amount of impairment		$ 8.1	$ 1.5	$ 2.5
Pre-impairment value	[1]	$ 18.3	$ 10.9	$ 10.1
Homebuilding [Member] | Southwest [Member]
Number of communities
Dollar amount of impairment
Pre-impairment value	[1]
Homebuilding [Member] | West [Member]
Number of communities		2		1
Dollar amount of impairment		$ 2.0		$ 1.8
Pre-impairment value	[1]	$ 3.1		$ 7.5
[1] Represents carrying value, net of prior period impairments, if any, at the time of recording the applicable period's impairments.

X

- Definition

Represents the number of communities with impairment losses.

+ References

No definition available.

+ Details

Name:	hov_NumberOfCommunitiesImpaired
Namespace Prefix:	hov_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Book value of inventory prior to current period impairment charge.

+ References

No definition available.

+ Details

Name:	hov_PreimpairmentValue
Namespace Prefix:	hov_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The charge against earnings in the period to reduce the carrying amount of real property to fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84176398&loc=d3e2921-110230

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	debit
Period Type:	duration

X

- Details

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- Details

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Period Type:

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- Details

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Period Type:

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- Details

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Period Type:

X

- Details

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X

- Details

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- Details

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Period Type: