Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income	$ 1,016,700	$ 1,022,023	$ 447,221
Adjustments to reconcile net income to net cash from operating activities:
Deferred income tax expense	105,438	362,777	422,307
Land-related charges	27,101	99,446	191,913
Depreciation and amortization	53,999	49,429	50,998
Share-based compensation expense	28,368	28,290	33,683
Loss on debt retirements	4,927	76	0
Other, net	1,155	(3,688)	(1,789)
Increase (decrease) in cash due to:
Inventories	(237,741)	(50,362)	(569,030)
Residential mortgage loans available-for-sale	(48,261)	107,330	(33,009)
Other assets	(15,125)	(64,174)	55,099
Accounts payable, accrued and other liabilities	140,984	(101,400)	65,687
Net cash provided by (used in) operating activities	1,077,545	1,449,747	663,080
Cash flows from investing activities:
Capital expenditures	(58,119)	(59,039)	(32,051)
Investments in unconsolidated entities	(9,515)	(1,000)	(23,037)
Business acquisition	(163,724)	0	0
Other investing activities, net	5,129	18,097	4,846
Net cash provided by (used in) investing activities	(226,229)	(41,942)	(50,242)
Cash flows from financing activities:
Debt issuance costs	0	(8,164)	0
Debt issuance costs			0
Repayments of notes payable	(309,985)	(82,775)	(134,747)
Borrowings under revolving credit facility	0	1,566,000	2,720,000
Repayments under revolving credit facility	0	(1,566,000)	(2,720,000)
Financial Services borrowings (repayments), net	(21,841)	(89,393)	106,183
Stock option exercises	6,399	6,555	27,720
Share repurchases	(274,333)	(294,566)	(910,331)
Cash paid for shares withheld for taxes	(11,450)	(7,910)	(5,995)
Dividends paid	(122,350)	(104,020)	(112,748)
Net cash provided by (used in) financing activities	(733,560)	(580,273)	(1,029,918)
Net increase (decrease)	117,756	827,532	(417,080)
Cash, cash equivalents, and restricted cash at beginning of period	1,133,700	306,168	723,248
Cash, cash equivalents, and restricted cash at end of period	1,251,456	1,133,700	306,168
Supplemental Cash Flow Information:
Interest paid (capitalized), net	5,605	557	(942)
Income taxes paid, net	$ 137,119	$ 89,204	$ 14,875