Segment Information (Operating Data By Segment) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues:
Total revenues	$ 2,954,957		$ 2,710,365	$ 7,843,718	$ 7,196,044
Income before Income Taxes:
Income before income taxes	484,167		366,146	1,204,944	903,625
Cost of Property Repairs and Maintenance			9,000		14,800
Goodwill impairment	0		0	20,190	0
Adjustments to previously recorded reserves	0		(1,700)	(59,362)	(18,338)
Write-off of insurance receivables					24,000
Northeast
Income before Income Taxes:
Income before income taxes	39,442		37,285	76,995	71,425
Southeast
Income before Income Taxes:
Income before income taxes	69,275		42,313	196,798	122,668
Florida
Income before Income Taxes:
Income before income taxes	106,394		89,186	258,991	218,848
Midwest
Income before Income Taxes:
Income before income taxes	62,638		55,286	137,707	124,406
Texas
Income before Income Taxes:
Income before income taxes	64,646		53,502	178,150	133,617
West
Income before Income Taxes:
Income before income taxes	121,974		100,034	279,393	284,659
Other homebuilding
Income before Income Taxes:
Income before income taxes	(44,266)		(43,744)	(67,128)	(121,769)
Home sales
Income before Income Taxes:
Income before income taxes	420,103		333,862	1,060,906	833,854
Financial Services
Income before Income Taxes:
Income before income taxes	64,064		32,284	144,038	69,771
Total Homebuilding
Revenues:
Revenues	2,848,086		2,645,550	7,587,495	7,031,410
Total Homebuilding | Northeast
Revenues:
Revenues	242,829		209,696	546,741	520,425
Total Homebuilding | Southeast
Revenues:
Revenues	434,782		456,244	1,275,039	1,240,782
Total Homebuilding | Florida
Revenues:
Revenues	623,971		539,269	1,712,180	1,470,866
Total Homebuilding | Midwest
Revenues:
Revenues	411,797		403,916	1,043,646	1,048,090
Total Homebuilding | Texas
Revenues:
Revenues	359,358		359,717	1,069,444	971,606
Total Homebuilding | West
Revenues:
Revenues	775,349		676,708	1,940,445	1,779,641
Financial Services
Revenues:
Revenues	$ 106,871		$ 64,815	256,223	$ 164,634
Innovative Construction Group [Member]
Income before Income Taxes:
Goodwill impairment		$ 20,200		$ 20,200