Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Homebuilding
Total revenues	$ 11,036,082	$ 10,212,957	$ 10,188,331
Homebuilding Cost of Revenues:
Selling, general, and administrative expenses	(1,011,442)	(1,044,337)	(1,012,023)
Goodwill impairment	(20,190)	0	0
Other expense, net	(17,826)	(13,476)	(13,849)
Income before income taxes	1,728,694	1,339,576	1,347,540
Income tax expense	(321,855)	(322,876)	(325,517)
Net income	$ 1,406,839	$ 1,016,700	$ 1,022,023
Net income per share:
Basic (usd per share)	$ 5.19	$ 3.67	$ 3.56
Diluted (usd per share)	5.18	3.66	3.55
Cash dividends declared (usd per share)	$ 0.50	$ 0.45	$ 0.38
Number of shares used in calculation:
Basic shares outstanding (shares)	268,553	274,495	283,578
Effect of dilutive securities (shares)	861	802	1,287
Diluted shares outstanding (shares)	269,414	275,297	284,865
Home Building [Member]
Homebuilding
Total revenues	$ 10,579,896	$ 9,915,705	$ 9,818,445
Homebuilding Cost of Revenues:
Cost of Goods and Services Sold	8,004,823	7,628,700	7,540,937
Land [Member]
Homebuilding
Total revenues	94,017	62,821	164,504
Homebuilding Cost of Revenues:
Cost of Goods and Services Sold	77,626	56,098	126,560
Total Homebuilding [Member]
Homebuilding
Total revenues	10,673,913	9,978,526	9,982,949
Homebuilding Cost of Revenues:
Cost of Revenue	8,082,449	7,684,798	7,667,497
Financial Service [Member]
Homebuilding
Total revenues	362,169	234,431	205,382
Homebuilding Cost of Revenues:
Cost of Revenue	$ 175,481	$ 130,770	$ 147,422