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% | ||