Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Homebuilding
Revenue from Contract with Customer, Excluding Assessed Tax	$ 10,212,957	$ 10,188,331	$ 8,577,686
Homebuilding Cost of Revenues:
Selling, general, and administrative expenses	(1,044,337)	(1,012,023)	(891,581)
Other expense, net	(13,476)	(13,849)	(32,387)
Income before income taxes	1,339,576	1,347,540	938,828
Income tax expense	(322,876)	(325,517)	(491,607)
Net income	$ 1,016,700	$ 1,022,023	$ 447,221
Net income per share:
Basic (usd per share)	$ 3.67	$ 3.56	$ 1.45
Diluted (usd per share)	3.66	3.55	1.44
Cash dividends declared (usd per share)	$ 0.45	$ 0.38	$ 0.36
Number of shares used in calculation:
Basic shares outstanding (shares)	274,495	283,578	305,089
Effect of dilutive securities (shares)	802	1,287	1,725
Diluted shares outstanding (shares)	275,297	284,865	306,814
Total Homebuilding [Member]
Homebuilding
Revenue from Contract with Customer, Excluding Assessed Tax	$ 9,978,526	$ 9,982,949	$ 8,385,526
Homebuilding Cost of Revenues:
Cost of Revenue	7,684,798	7,667,497	6,595,601
Land [Member]
Homebuilding
Revenue from Contract with Customer, Excluding Assessed Tax	62,821	164,504	61,542
Homebuilding Cost of Revenues:
Cost of Goods and Services Sold	56,098	126,560	134,449
Home Building [Member]
Homebuilding
Revenue from Contract with Customer, Excluding Assessed Tax	9,915,705	9,818,445	8,323,984
Homebuilding Cost of Revenues:
Cost of Goods and Services Sold	7,628,700	7,540,937	6,461,152
Financial Service [Member]
Homebuilding
Revenue from Contract with Customer, Excluding Assessed Tax	234,431	205,382	192,160
Homebuilding Cost of Revenues:
Cost of Revenue	$ 130,770	$ 147,422	$ 119,289