Segment Disclosures - Revenues (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 2,338,330	$ 2,658,943	$ 4,516,607	$ 5,037,352
Home Building Segment
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	2,283,769	2,610,062	4,415,102	4,919,289
Home Building Segment | Mid Atlantic
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	1,058,794	1,208,312	1,999,942	2,350,020
Home Building Segment | North East
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	232,926	237,394	416,356	412,945
Home Building Segment | Mid East
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	411,682	521,038	814,079	982,442
Home Building Segment | South East
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	580,367	643,318	1,184,725	1,173,882
Mortgage Banking
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 54,561	$ 48,881	$ 101,505	$ 118,063