Investments in Partially Owned Entities - Consolidated Variable Interest Entities ("VIEs") - Additional Information (Details)	Dec. 31, 2021 JointVenture
Toll Brothers, Inc. (“Toll”)
Variable Interest Entity [Line Items]
Number of separate joint venture agreements under the commitment agreement	3

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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