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| | | <Role> http://drhorton.com/role/StockholdersEquityDetails </Role> |
| | | <ShortName> Stockholders' Equity (Details) </ShortName> |
| | | </Report> |
| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R50.htm </HtmlFileName> |
| | | <LongName> 0612 - Disclosure - Commitments and Contingencies (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://drhorton.com/role/CommitmentsAndContingenciesDetails </Role> |
| | | <ShortName> Commitments and Contingencies (Details) </ShortName> |
| | | </Report> |
| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
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| | | <LongName> 06121 - Disclosure - Commitments and Contingencies (Details Textual) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://drhorton.com/role/CommitmentsAndContingenciesDetailsTextual </Role> |
| | | <ShortName> Commitments and Contingencies (Details Textual) </ShortName> |
| | | </Report> |
| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R52.htm </HtmlFileName> |
| | | <LongName> 0613 - Disclosure - Other Assets and Accrued Expenses and Other Liabilities (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://drhorton.com/role/OtherAssetsAndAccruedExpensesAndOtherLiabilitiesDetails </Role> |
| | | <ShortName> Other Assets and Accrued Expenses and Other Liabilities (Details) </ShortName> |
| | | </Report> |
| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R53.htm </HtmlFileName> |
| | | <LongName> 0615 - Disclosure - Segment Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://drhorton.com/role/DisclosureSegmentInformationDetails </Role> |
| | | <ShortName> Segment Information (Details) </ShortName> |
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| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R54.htm </HtmlFileName> |
| | | <LongName> 06151 - Disclosure - Segment Information (Details Textual) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://drhorton.com/role/DisclosureSegmentInformationDetailsTextual </Role> |
| | | <ShortName> Segment Information (Details Textual) </ShortName> |
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| | | <HtmlFileName> R55.htm </HtmlFileName> |
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| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://drhorton.com/role/DisclosureSupplementalGuarantorInformationDetails </Role> |
| | | <ShortName> Supplemental Guarantor Information (Details) </ShortName> |
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| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R56.htm </HtmlFileName> |
| | | <LongName> 06161 - Disclosure - Supplemental Guarantor Information (Details 1) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://drhorton.com/role/DisclosureSupplementalGuarantorInformationDetails1 </Role> |
| | | <ShortName> Supplemental Guarantor Information (Details 1) </ShortName> |
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| | | <HtmlFileName> R57.htm </HtmlFileName> |
| | | <LongName> 06162 - Disclosure - Supplemental Guarantor Information (Details 2) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://drhorton.com/role/DisclosureSupplementalGuarantorInformationDetails2 </Role> |
| | | <ShortName> Supplemental Guarantor Information (Details 2) </ShortName> |
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| | <Report> |
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| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <LongName> All Reports </LongName> |
| | | <ReportType> Book </ReportType> |
| | | <ShortName> All Reports </ShortName> |
| | | </Report> |
| | </MyReports> |
| <Logs> |
| | <Log type="Info"> 'Monetary' elements on report '06121 - Disclosure - Commitments and Contingencies (Details Textual)' had a mix of different decimal attribute values. </Log> |
| | <Log type="Info"> Process Flow-Through: 0110 - Statement - Consolidated Balance Sheets (Unaudited) </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column 'Mar. 31, 2011' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column 'Sep. 30, 2010' </Log> |
| | <Log type="Info"> Process Flow-Through: 0111 - Statement - Consolidated Balance Sheets (Parenthetical) (Unaudited) </Log> |
| | <Log type="Info"> Process Flow-Through: 0130 - Statement - Consolidated Statements of Cash Flows (Unaudited) </Log> |
| | </Logs> |
| <InputFiles> |
| | <File> dhi-20120331.xml </File> |
| | <File> dhi-20120331.xsd </File> |
| | <File> dhi-20120331_cal.xml </File> |
| | <File> dhi-20120331_def.xml </File> |
| | <File> dhi-20120331_lab.xml </File> |
| | <File> dhi-20120331_pre.xml </File> |
| | </InputFiles> |
| <SupplementalFiles/> |
| <BaseTaxonomies/> |
| <HasPresentationLinkbase> true </HasPresentationLinkbase> |
| <HasCalculationLinkbase> true </HasCalculationLinkbase> |
| </FilingSummary> |