Segment Disclosures - Revenues (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 2,569,025	$ 2,776,900	$ 7,085,632	$ 7,814,252
Home Building Segment
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	2,512,409	2,739,445	6,927,511	7,658,734
Home Building Segment | Mid Atlantic
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	1,146,559	1,282,504	3,146,501	3,632,524
Home Building Segment | North East
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	268,237	250,067	684,593	663,012
Home Building Segment | Mid East
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	468,727	569,991	1,282,806	1,552,434
Home Building Segment | South East
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	628,886	636,883	1,813,611	1,810,764
Mortgage Banking
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 56,616	$ 37,455	$ 158,121	$ 155,518