Segment Disclosures - Revenues (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 2,612,457	$ 2,338,330	$ 4,945,920	$ 4,516,607
Home Building Segment
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	2,547,891	2,283,769	4,834,068	4,415,102
Home Building Segment | Mid Atlantic
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	1,133,685	1,058,794	2,151,155	1,999,942
Home Building Segment | North East
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	287,334	232,926	543,004	416,356
Home Building Segment | Mid East
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	433,996	411,682	850,947	814,079
Home Building Segment | South East
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	692,876	580,367	1,288,962	1,184,725
Mortgage Banking
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 64,566	$ 54,561	$ 111,852	$ 101,505