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Note 21 - Fair Value of Financial Instruments (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
Loans Held for Sale Mortgages Unpaid Principal	$ 128.4	$ 149.4
Other Commitment	19.5
Impairment of Real Estate	15.1	24.5	$ 7.3
Fair Value, Inputs, Level 2 [Member] | Unsecured Senior Notes Excluding Senior Amortizing Notes and Senior Exchangeable Notes [Member]
Notes Payable, Fair Value Disclosure	383.7	251.7
Fair Value, Inputs, Level 3 [Member] | Senior Secured Notes [Member]
Notes Payable, Fair Value Disclosure	1,200.0	883.0
Fair Value, Inputs, Level 3 [Member] | Senior Amortizing Notes [Member]
Notes Payable, Fair Value Disclosure	2.1	6.3
Fair Value, Inputs, Level 3 [Member] | Senior Exchangeable Notes [Member]
Notes Payable, Fair Value Disclosure	54.2	$ 55.2
Loan Origination Commitments [Member]
Loan Applications in Process	$ 486.5
Loan Origination Commitments [Member] | Maximum [Member]
Number of Days in Committment	60 days
Interest Rate Committed Loan Applications [Member]
Interest Rate Committed Loan Applications	$ 31.2

X

- Definition

Value of loan applications in process with committed interest rates at the end of the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	hov_
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Period Type:	instant

X

- Definition

Value of loan applications in process at the end of the period.

+ References

No definition available.

+ Details

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X

- Definition

Mortgage loans held for sale unpaid principal.

+ References

No definition available.

+ Details

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X

- Definition

The number of days for which loans are committed.

+ References

No definition available.

+ Details

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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

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X

- Definition

Fair value portion of notes payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19,20,22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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X

- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

+ References

No definition available.

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