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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, 2020 USD ($) | Oct. 31, 2019 USD ($) | Oct. 31, 2018 USD ($)
Dollar amount of impairment |  | $ 2.0 | $ 2.7 | $ 2.1
Homebuilding [Member] |  |  |  |
Number of communities |  | 2 | 6 | 5
Dollar amount of impairment |  | $ 2.0 | $ 2.7 | $ 2.1
Pre-impairment value | [1] | $ 4.8 | $ 17.5 | $ 11.2
Homebuilding [Member] | Northeast [Member] |  |  |  |
Number of communities |  | 0 | 2 | 1
Dollar amount of impairment |  | $ 0.0 | $ 0.2 | $ 0.4
Pre-impairment value | [1] | $ 0.0 | $ 7.8 | $ 1.0
Homebuilding [Member] | Mid-Atlantic [Member] |  |  |  |
Number of communities |  | 0 | 1 | 0
Dollar amount of impairment |  | $ 0.0 | $ 0.3 | $ 0.0
Pre-impairment value | [1] | $ 0.0 | $ 1.7 | $ 0.0
Homebuilding [Member] | Midwest [Member] |  |  |  |
Number of communities |  | 2 | 1 | 1
Dollar amount of impairment |  | $ 2.0 | $ 1.4 | $ 0.1
Pre-impairment value | [1] | $ 4.8 | $ 4.6 | $ 0.5
Homebuilding [Member] | Southeast [Member] |  |  |  |
Number of communities |  | 0 | 1 | 3
Dollar amount of impairment |  | $ 0.0 | $ 0.7 | $ 1.6
Pre-impairment value | [1] | $ 0.0 | $ 2.2 | $ 9.7
Homebuilding [Member] | Southwest [Member] |  |  |  |
Number of communities |  | 0 | 1 | 0
Dollar amount of impairment |  | $ 0.0 | $ 0.1 | $ 0.0
Pre-impairment value | [1] | $ 0.0 | $ 1.2 | $ 0.0
Homebuilding [Member] | West [Member] |  |  |  |
Number of communities |  | 0 | 0 | 0
Dollar amount of impairment |  | $ 0.0 | $ 0.0 | $ 0.0
Pre-impairment value | [1] | $ 0.0 | $ 0.0 | $ 0.0
[1] | Represents carrying value, net of prior period impairments, if any, at the time of recording the applicable period's impairments.

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- 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

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- 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

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- 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/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
Name: | srt_StatementGeographicalAxis=hov_MidatlanticMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_StatementGeographicalAxis=hov_SouthwestMember
Namespace Prefix: |
Data Type: | na
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Period Type: |

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- Details
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Namespace Prefix: |
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Period Type: |