Basis of Presentation (Details)	3 Months Ended
Dec. 31, 2021 Segments
HomeBuildingMember
Entity Information [Line Items]
Number of homebuilding reporting segments	6
Forestar Group [Member]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Noncontrolling Interest, Ownership Percentage by Parent	63.00%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	37.00%
Entity Information [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	63.00%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	37.00%

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.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8672-108599

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