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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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- Definition The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. + References 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 + Details
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