Inventory - Schedule of Interests in Lot Option Agreements (Details) - Unconsolidated Entities - USD ($) $ in Thousands |
Jun. 30, 2026 |
Sep. 30, 2025 |
|---|---|---|
| Real Estate Properties [Line Items] | ||
| Deposits and non-refundable pre-acquisition costs incurred | $ 387,422 | $ 333,435 |
| Remaining purchase price if lot option agreements are exercised | $ 1,631,298 | $ 1,610,171 |