Segment Information (Operating Data By Segment) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues:
Total revenues		$ 13,926,882	$ 11,036,082	$ 10,212,957
Income (loss) before income taxes:
Consolidated income (loss) before income taxes		2,509,845	1,728,694	1,339,576
Homebuilding		2,288,128	1,542,057	1,236,261
Goodwill impairment	$ 20,200	0	20,190	0
Adjustment to self insurance reserves		(81,131)	(93,431)	(49,437)
Loss on debt retirements		(61,469)	0	(4,927)
Northeast [Member]
Income (loss) before income taxes:
Consolidated income (loss) before income taxes		215,193	136,985	116,221
Southeast [Member]
Income (loss) before income taxes:
Consolidated income (loss) before income taxes		417,880	258,794	175,763
Florida [Member]
Income (loss) before income taxes:
Consolidated income (loss) before income taxes		585,680	362,276	309,596
Product Warranty Expense				14,800
Goodwill impairment			20,200
Midwest [Member]
Income (loss) before income taxes:
Consolidated income (loss) before income taxes		285,825	213,017	184,438
Texas [Member]
Income (loss) before income taxes:
Consolidated income (loss) before income taxes		322,979	242,383	195,751
West [Member]
Income (loss) before income taxes:
Consolidated income (loss) before income taxes		594,976	424,803	386,361
Other Homebuilding [Member]
Income (loss) before income taxes:
Consolidated income (loss) before income taxes		(134,405)	(96,201)	(131,869)
Financial Services [Member]
Income (loss) before income taxes:
Consolidated income (loss) before income taxes		221,717	186,637	103,315
Financial Service [Member]
Revenues:
Total revenues		389,532	362,169	234,431
Total Homebuilding [Member]
Revenues:
Total revenues		13,537,350	10,673,913	9,978,526
Total Homebuilding [Member] | Northeast [Member]
Revenues:
Total revenues		1,127,476	846,337	797,963
Total Homebuilding [Member] | Southeast [Member]
Revenues:
Total revenues		2,234,297	1,691,822	1,684,655
Total Homebuilding [Member] | Florida [Member]
Revenues:
Total revenues		3,154,583	2,350,055	2,074,194
Total Homebuilding [Member] | Midwest [Member]
Revenues:
Total revenues		1,979,997	1,514,132	1,495,037
Total Homebuilding [Member] | Texas [Member]
Revenues:
Total revenues		1,805,208	1,451,104	1,389,211
Total Homebuilding [Member] | West [Member]
Revenues:
Total revenues		$ 3,235,789	$ 2,820,463	$ 2,537,466