Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net income	$ 1,022,023	$ 447,221	$ 602,703
Adjustments to reconcile net income to net cash from operating activities:
Deferred income tax expense	362,777	422,307	334,787
Land-related charges	99,446	191,913	19,357
Depreciation and amortization	49,429	50,998	54,007
Share-based compensation expense	28,290	33,683	22,228
Loss on debt retirements	0	0	657
Other, net	(3,612)	(1,789)	1,614
Increase (decrease) in cash due to:
Inventories	(50,362)	(569,030)	(897,092)
Residential mortgage loans available-for-sale	107,330	(33,009)	(99,527)
Other assets	(64,174)	55,099	(45,721)
Accounts payable, accrued and other liabilities	(101,403)	65,684	75,257
Net cash provided by operating activities	1,449,744	663,077	68,270
Cash flows from investing activities:
Capital expenditures	(59,039)	(32,051)	(39,295)
Investment in unconsolidated subsidiaries	(1,000)	(23,037)	(14,539)
Cash used for business acquisition	0	0	(430,458)
Other investing activities, net	18,097	4,846	13,100
Net cash used in investing activities	(41,942)	(50,242)	(471,192)
Cash flows from financing activities:
Payments of Debt Issuance Costs	(8,164)
Proceeds from debt, net of issuance costs		0	1,995,937
Repayments of debt	(82,775)	(134,747)	(986,919)
Borrowings under revolving credit facility	1,566,000	2,720,000	619,000
Repayments under revolving credit facility	(1,566,000)	(2,720,000)	(619,000)
Financial Services borrowings (repayments), net	(89,393)	106,183	63,744
Stock option exercises	6,555	27,720	5,845
Share repurchases	(302,473)	(916,323)	(603,206)
Dividends paid	(104,020)	(112,748)	(124,666)
Net cash provided by (used in) financing activities	(580,270)	(1,029,915)	350,735
Net increase (decrease)	827,532	(417,080)	(52,187)
Cash, cash equivalents, and restricted cash at beginning of period	306,168	723,248	775,435
Cash, cash equivalents, and restricted cash at end of period	1,133,700	306,168	723,248
Supplemental Cash Flow Information:
Interest paid (capitalized), net	557	(942)	(26,538)
Income taxes paid, net	$ 89,204	$ 14,875	$ 2,743