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v3.19.3.a.u2

Inventory (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Inventory [Line Items] |  |
Carrying value of communities with impairment indicators | $ 34.2 |
Impairment charges | 0.0 | $ 4.2
Write-offs (recoveries) of earnest money deposits and pre-acquisition costs | $ 3.8 | $ 3.8

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- Definition The aggregate carrying value of communities with impairment indicators as determined through the entity's impairment analysis. + References No definition available. + Details
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Namespace Prefix: | dhi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The net write-off or recovery of earnest money deposits and pre-acquisition costs related to land option contracts during the period. + References No definition available. + Details
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Namespace Prefix: | dhi_
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Balance Type: | credit
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=116847112&loc=d3e4542-108314 + Details
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