Homesites Under Option Contracts - Additional Information (Details) - Homesites [Member] - USD ($) $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Disaggregation of Revenue [Line Items]
Option fee income	$ 195.4	$ 141.1	$ 380.7	$ 221.2
Option contracts			$ 9,600.0		$ 8,900.0

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.

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+ Details