Name:	dhi_CarryingValueOfCommunitiesWithImpairmentIndicators
Namespace Prefix:	dhi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Inventory Impairments Information.

No definition available.

Name:	dhi_InventoryImpairmentsInformationLineItems
Namespace Prefix:	dhi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The net write-off or recovery of earnest money deposits and pre-acquisition costs related to land option contracts during the period.

No definition available.

Name:	dhi_WriteOffsRecoveriesOfEarnestMoneyDepositsAndPreAcquisitionCosts
Namespace Prefix:	dhi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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.

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

Name:	us-gaap_InventoryWriteDown
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

The amount of cash paid for the settlement of litigation or for other legal issues during the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3536-108585