Segment Reporting - Reconciliation of Pretax Operating Income From Segments to Consolidated (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Total pretax income	$ 185,789	$ 192,692	$ 646,634	$ 542,546
Homebuilding:
Segment Reporting Information [Line Items]
Total financial services pretax income	168,216	165,152	596,986	466,168
Total pretax income	168,216	165,152	596,986	466,168
Financial Services:
Segment Reporting Information [Line Items]
Total financial services pretax income	17,573	27,540	49,648	76,378
Total pretax income	17,573	27,540	49,648	76,378
Operating Segments | Homebuilding: | West
Segment Reporting Information [Line Items]
Total financial services pretax income	105,680	120,284	384,714	330,390
Operating Segments | Homebuilding: | Mountain
Segment Reporting Information [Line Items]
Total financial services pretax income	68,106	55,386	197,747	165,296
Operating Segments | Homebuilding: | East
Segment Reporting Information [Line Items]
Total financial services pretax income	28,245	15,410	94,046	34,091
Operating Segments | Financial Services: | Mortgage operations
Segment Reporting Information [Line Items]
Total financial services pretax income	5,676	21,214	23,782	61,341
Operating Segments | Financial Services: | Other
Segment Reporting Information [Line Items]
Total financial services pretax income	11,897	6,326	25,866	15,037
Corporate | Homebuilding:
Segment Reporting Information [Line Items]
Total financial services pretax income	$ (33,815)	$ (25,928)	$ (79,521)	$ (63,609)