Segment Disclosures - Revenues (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 2,609,505	$ 2,732,951	$ 7,611,351	$ 7,678,871
Home Building Segment
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	2,560,343	2,677,640	7,459,055	7,511,708
Home Building Segment | Mid Atlantic
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	1,039,957	1,147,893	3,251,066	3,299,047
Home Building Segment | North East
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	291,753	300,448	889,508	843,452
Home Building Segment | Mid East
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	508,798	501,190	1,371,160	1,352,137
Home Building Segment | South East
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	719,835	728,109	1,947,321	2,017,072
Mortgage Banking
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 49,162	$ 55,311	$ 152,296	$ 167,163