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Segment Information (Operating Data By Segment) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues:
Total revenues	$ 3,479,050	$ 2,954,957		$ 9,568,324	$ 7,843,718
Income (loss) before income taxes:
Income before income taxes	620,402	484,167		1,653,928	1,204,944
Goodwill impairment	0	0		0	20,190
Adjustments to previously recorded reserves	(1,349)	0		(56,567)	(59,362)
Other homebuilding
Income (loss) before income taxes:
Adjustments to previously recorded reserves				(53,700)	(59,400)
Homebuilding
Revenues:
Revenues	3,387,568	2,848,086		9,279,692	7,587,495
Financial Services
Revenues:
Revenues	91,482	106,871		288,632	256,223
Income (loss) before income taxes:
Income before income taxes	48,639	64,064		166,442	144,038
Homebuilding
Income (loss) before income taxes:
Income before income taxes	571,763	420,103		1,487,486	1,060,906
Homebuilding \| Northeast
Revenues:
Revenues	273,261	242,829		735,602	546,741
Income (loss) before income taxes:
Income before income taxes	53,410	39,442		132,604	76,995
Homebuilding \| Southeast
Revenues:
Revenues	587,875	434,782		1,541,910	1,275,039
Income (loss) before income taxes:
Income before income taxes	109,407	69,275		274,174	196,798
Homebuilding \| Florida
Revenues:
Revenues	740,569	623,971		2,157,374	1,712,180
Income (loss) before income taxes:
Income before income taxes	133,642	106,394		382,682	258,991
Homebuilding \| Midwest
Revenues:
Revenues	505,012	411,797		1,337,416	1,043,646
Income (loss) before income taxes:
Income before income taxes	72,537	62,638		196,205	137,707
Homebuilding \| Texas
Revenues:
Revenues	412,568	359,358		1,256,983	1,069,444
Income (loss) before income taxes:
Income before income taxes	71,062	64,646		221,099	178,150
Homebuilding \| West
Revenues:
Revenues	868,283	775,349		2,250,407	1,940,445
Income (loss) before income taxes:
Income before income taxes	173,137	121,974		403,039	279,393
Homebuilding \| Other homebuilding
Income (loss) before income taxes:
Income before income taxes	$ (41,432)	$ (44,266)		(122,317)	$ (67,128)
Innovative Construction Group
Income (loss) before income taxes:
Goodwill impairment			$ 20,200	$ 61,500