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Inventory - Schedule of Interests in Lot Option Agreements (Details) - Unconsolidated Entities - USD ($) $ in Thousands | Jun. 30, 2026 | Sep. 30, 2025
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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

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 275 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-2 + Details
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