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Basis of Presentation (Details) $ in Millions	3 Months Ended
	Dec. 31, 2022 USD ($) lot	Dec. 31, 2021 USD ($)
Entity Information [Line Items]
Payments related to business acquisitions | $	$ 97.1	$ 0.0
Riggins Custom Homes
Entity Information [Line Items]
Payments related to business acquisitions | $	$ 107.0
Business Acquisition, Number of Homes Acquired	170
Business Acquisition, Number of Finished Lots Acquired	3,000
Business Acquisition, Backlog Acquired	100
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%

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585

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