Segment Reporting - Reconciliation of Pretax Operating Income From Segments to Consolidated (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Total pretax income	$ 258,963	$ 205,542	$ 460,845	$ 349,854
Homebuilding:
Segment Reporting Information [Line Items]
Total financial services pretax income	240,271	187,509	428,770	301,016
Total pretax income	240,271	187,509	428,770	301,016
Financial Services:
Segment Reporting Information [Line Items]
Total financial services pretax income	18,692	18,033	32,075	48,838
Total pretax income	18,692	18,033	32,075	48,838
Operating Segments | Homebuilding: | West
Segment Reporting Information [Line Items]
Total financial services pretax income	148,508	132,919	279,034	210,106
Operating Segments | Homebuilding: | Mountain
Segment Reporting Information [Line Items]
Total financial services pretax income	79,135	64,052	129,641	109,910
Operating Segments | Homebuilding: | East
Segment Reporting Information [Line Items]
Total financial services pretax income	34,407	10,846	65,801	18,681
Operating Segments | Financial Services: | Mortgage operations
Segment Reporting Information [Line Items]
Total financial services pretax income	10,673	14,088	18,106	40,127
Operating Segments | Financial Services: | Other
Segment Reporting Information [Line Items]
Total financial services pretax income	8,019	3,945	13,969	8,711
Corporate | Homebuilding:
Segment Reporting Information [Line Items]
Total financial services pretax income	$ (21,779)	$ (20,308)	$ (45,706)	$ (37,681)