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Basis of Presentation (Details) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2025 USD ($) Home Lot | Mar. 31, 2026 USD ($) | Mar. 31, 2025 USD ($)
Entity Information [Line Items] |  |  |
Payments related to business acquisitions | $ |  | $ 87.9 | $ 53.1
SK Builders |  |  |
Entity Information [Line Items] |  |  |
Payments related to business acquisitions | $ | $ 80.0 |  |
Business Acquisition, Number of Homes Acquired | Home | 160 |  |
Business Acquisition, Number of Lots Acquired | Lot | 260 |  |
Business Acquisition, Backlog Acquired | Home | 110 |  |
Business Acquisition, Number of Controlled Lots Acquired through Land Purchase Contracts | Lot | 1,320 |  |
Forestar Group [Member] |  |  |
Entity Information [Line Items] |  |  |
Noncontrolling Interest, Ownership Percentage by Parent |  | 62.00% |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |  | 38.00% |

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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 -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-13 + Details
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