Supplemental Guarantor Information (Statement Of Operations and Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Homebuilding
Home sale revenues									$ 7,451,315	$ 5,792,675	$ 5,662,171
Land sale revenues									36,035	48,536	34,554
Total homebuilding revenues	$ 2,438,903	$ 1,894,885	$ 1,756,832	$ 1,396,730	$ 2,018,194	$ 1,467,780	$ 1,249,537	$ 1,105,700	7,487,350	5,841,211	5,696,725
Financial Services	54,175	48,020	43,082	35,848	43,434	38,967	30,754	27,598	181,126	140,753	125,638
Total revenues	2,493,078	1,942,905	1,799,914	1,432,578	2,061,628	1,506,747	1,280,291	1,133,298	7,668,476	5,981,964	5,822,363
Homebuilding Cost of Revenues:
Home sale cost of revenues									(5,587,974)	(4,235,945)	(4,149,674)
Land sale cost of revenues									(32,115)	(35,858)	(23,748)
Total cost of revenues	(1,835,928)	(1,429,133)	(1,314,972)	(1,040,056)	(1,470,053)	(1,070,231)	(915,151)	(816,368)	(5,620,089)	(4,271,803)	(4,173,422)
Financial Services expenses									(108,573)	(82,047)	(71,057)
Selling, general, and administrative expenses									(957,150)	(794,728)	(861,390)
Other expense, net									(48,814)	(17,363)	(26,736)
Intercompany interest									0	0	0
Income (loss) before income taxes and equity in income (loss) of subsidiaries									933,850	816,023	689,758
Income tax expense	(140,549)	(83,865)	(71,820)	(34,913)	(145,288)	(71,507)	(64,303)	(40,834)	(331,147)	(321,933)	(215,420)
Income (loss) before equity in income (loss) of subsidiaries									602,703	494,090	474,338
Equity in income (loss) of subsidiaries									0	0	0
Net income	$ 273,172	$ 128,470	$ 117,760	$ 83,300	$ 228,027	$ 107,769	$ 103,324	$ 54,971	602,703	494,090	474,338
Other comprehensive income (loss)									83	81	105
Comprehensive income									602,786	494,171	474,443
Parent Company [Member]
Homebuilding
Home sale revenues									0	0	0
Land sale revenues									0	0	0
Total homebuilding revenues									0	0	0
Financial Services									0	0	0
Total revenues									0	0	0
Homebuilding Cost of Revenues:
Home sale cost of revenues									0	0	0
Land sale cost of revenues									0	0	0
Total cost of revenues									0	0	0
Financial Services expenses									0	(313)	(784)
Selling, general, and administrative expenses									0	(3)	0
Other expense, net									(1,321)	(760)	(9,026)
Intercompany interest									(1,980)	(2,110)	(9,800)
Income (loss) before income taxes and equity in income (loss) of subsidiaries									(3,301)	(3,186)	(19,610)
Income tax expense									1,254	1,210	7,473
Income (loss) before equity in income (loss) of subsidiaries									(2,047)	(1,976)	(12,137)
Equity in income (loss) of subsidiaries									604,750	496,066	486,475
Net income									602,703	494,090	474,338
Other comprehensive income (loss)									83	81	105
Comprehensive income									602,786	494,171	474,443
Guarantor Subsidiaries [Member]
Homebuilding
Home sale revenues									7,427,757	5,792,675	5,662,171
Land sale revenues									33,598	48,536	34,554
Total homebuilding revenues									7,461,355	5,841,211	5,696,725
Financial Services									0	1	889
Total revenues									7,461,355	5,841,212	5,697,614
Homebuilding Cost of Revenues:
Home sale cost of revenues									(5,566,653)	(4,235,945)	(4,149,674)
Land sale cost of revenues									(30,156)	(35,858)	(23,748)
Total cost of revenues									(5,596,809)	(4,271,803)	(4,173,422)
Financial Services expenses									(533)	276	130
Selling, general, and administrative expenses									(907,748)	(790,818)	(854,883)
Other expense, net									(69,345)	(17,424)	(16,847)
Intercompany interest									0	(7,922)	90
Income (loss) before income taxes and equity in income (loss) of subsidiaries									886,920	753,521	652,682
Income tax expense									(312,486)	(297,485)	(201,332)
Income (loss) before equity in income (loss) of subsidiaries									574,434	456,036	451,350
Equity in income (loss) of subsidiaries									58,078	40,484	38,534
Net income									632,512	496,520	489,884
Other comprehensive income (loss)									0	0	0
Comprehensive income									632,512	496,520	489,884
Non-Guarantor Subsidiaries [Member]
Homebuilding
Home sale revenues									23,558	0	0
Land sale revenues									2,437	0	0
Total homebuilding revenues									25,995	0	0
Financial Services									181,126	140,752	124,749
Total revenues									207,121	140,752	124,749
Homebuilding Cost of Revenues:
Home sale cost of revenues									(21,321)	0	0
Land sale cost of revenues									(1,959)	0	0
Total cost of revenues									(23,280)	0	0
Financial Services expenses									(108,040)	(82,010)	(70,403)
Selling, general, and administrative expenses									(49,402)	(3,907)	(6,507)
Other expense, net									21,852	821	(863)
Intercompany interest									1,980	10,032	9,710
Income (loss) before income taxes and equity in income (loss) of subsidiaries									50,231	65,688	56,686
Income tax expense									(19,915)	(25,658)	(21,561)
Income (loss) before equity in income (loss) of subsidiaries									30,316	40,030	35,125
Equity in income (loss) of subsidiaries									457,716	411,699	403,505
Net income									488,032	451,729	438,630
Other comprehensive income (loss)									0	0	0
Comprehensive income									488,032	451,729	438,630
Eliminating Entries [Member]
Homebuilding
Home sale revenues									0	0	0
Land sale revenues									0	0	0
Total homebuilding revenues									0	0	0
Financial Services									0	0	0
Total revenues									0	0	0
Homebuilding Cost of Revenues:
Home sale cost of revenues									0	0	0
Land sale cost of revenues									0	0	0
Total cost of revenues									0	0	0
Financial Services expenses									0	0	0
Selling, general, and administrative expenses									0	0	0
Other expense, net									0	0	0
Intercompany interest									0	0	0
Income (loss) before income taxes and equity in income (loss) of subsidiaries									0	0	0
Income tax expense									0	0	0
Income (loss) before equity in income (loss) of subsidiaries									0	0	0
Equity in income (loss) of subsidiaries									(1,120,544)	(948,249)	(928,514)
Net income									(1,120,544)	(948,249)	(928,514)
Other comprehensive income (loss)									0	0	0
Comprehensive income									$ (1,120,544)	$ (948,249)	$ (928,514)