Segment Information (Operating Data By Segment) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues:
Revenues		$ 16,228,995	$ 13,926,882	$ 11,036,082
Income (loss) before income taxes:
Income before income taxes		3,439,558	2,509,845	1,728,694
Goodwill impairment	$ 20,200	0	0	20,190
Gain Property Sale, Unconsolidated Entity		49,100
Adjustment to self insurance reserves		(64,965)	(81,131)	(93,431)
Loss on debt retirement		0	(61,469)	0
Florida [Member]
Income (loss) before income taxes:
Goodwill impairment				(20,200)
Real Estate | Northeast [Member]
Revenues:
Revenues		1,077,514	1,127,476	846,337
Income (loss) before income taxes:
Income before income taxes		244,233	215,193	136,985
Real Estate | Southeast [Member]
Revenues:
Revenues		2,795,640	2,234,297	1,691,822
Income (loss) before income taxes:
Income before income taxes		692,279	417,880	258,794
Real Estate | Florida [Member]
Revenues:
Revenues		3,981,766	3,154,583	2,350,055
Income (loss) before income taxes:
Income before income taxes		939,034	585,680	362,276
Real Estate | Midwest [Member]
Revenues:
Revenues		2,318,255	1,979,997	1,514,132
Income (loss) before income taxes:
Income before income taxes		363,028	287,956	213,516
Real Estate | Texas [Member]
Revenues:
Revenues		2,239,822	1,805,208	1,451,104
Income (loss) before income taxes:
Income before income taxes		465,461	322,979	242,383
Real Estate | West [Member]
Revenues:
Revenues		3,504,282	3,235,789	2,820,463
Income (loss) before income taxes:
Income before income taxes		687,403	592,845	424,304
Real Estate | Other Homebuilding [Member]
Income (loss) before income taxes:
Income before income taxes		(84,110)	(134,405)	(96,201)
Real Estate | Homebuilding
Revenues:
Revenues		15,917,279	13,537,350	10,673,913
Income (loss) before income taxes:
Income before income taxes		3,307,328	2,288,128	1,542,057
Home sale revenues | Homebuilding
Revenues:
Revenues		15,774,135	13,376,812	10,579,896
Detached single-family homes | Homebuilding
Revenues:
Revenues		13,500,000	11,200,000	8,900,000
Attached homes | Homebuilding
Revenues:
Revenues		2,300,000	2,200,000	1,600,000
Land sale and other revenues | Homebuilding
Revenues:
Revenues		143,144	160,538	94,017
Financial Services | Financial Services
Revenues:
Revenues		311,716	389,532	362,169
Income (loss) before income taxes:
Income before income taxes		$ 132,230	$ 221,717	$ 186,637