Supplemental Financial Information (Condensed Consolidating Statement of Cash Flows) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2017	May 31, 2016	May 31, 2017	May 31, 2016
Cash flows from operating activities:
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	$ 200,708	$ 224,038	$ 230,382	$ 369,490
Distributions of earnings from guarantor and non-guarantor subsidiaries			0	0
Other adjustments to reconcile net earnings (including net loss attributable to noncontrolling interests) to net cash provided by (used in) operating activities			(390,141)	(544,872)
Net cash used in operating activities			(159,759)	(175,382)
Cash flows from investing activities:
Investments in and contributions to unconsolidated entities, net of distributions of capital			(219,256)	(107,216)
Proceeds from sales of real estate owned			55,521	43,412
Receipts of principal payments on loans receivable and other			19,487	5,484
Originations of loans receivable			(14,055)	(16,864)
Purchases of commercial mortgage-backed securities bonds			(40,357)	(33,005)
Acquisition, net of cash acquired			(611,103)	(600)
Other			(44,286)	(41,438)
Distributions of capital from guarantor and non-guarantor subsidiaries			0	0
Intercompany			0	0
Net cash used in investing activities			(873,536)	(149,627)
Cash flows from financing activities:
Redemption of senior notes			400,000	250,000
Conversions and exchanges on convertible senior notes			0	(233,893)
Net payments on other borrowings			34,496	(87,532)
Net payments related to noncontrolling interests			(47,589)	(73,028)
Excess tax benefits from share-based awards			1,980	7,039
Common stock:
Issuances			693	594
Repurchases			(83)	(971)
Dividends			(18,778)	(17,191)
Intercompany			0	0
Net cash (used in) provided by financing activities			687,734	(17,959)
Net decrease in cash and cash equivalents			(345,561)	(342,968)
Cash and cash equivalents at beginning of period			1,329,529	1,158,445
Cash and cash equivalents at end of period	983,968	815,477	983,968	815,477
Rialto
Cash flows from financing activities:
Net proceeds on Rialto notes payable			25,340
Principal payments on Rialto notes payable			(10,120)	(2,999)
Common stock:
Cash and cash equivalents at beginning of period			148,827
Cash and cash equivalents at end of period	119,592		119,592
Senior Notes
Cash flows from financing activities:
Net proceeds from debt			1,235,940	495,228
Unsecured Revolving Credit Facility
Cash flows from financing activities:
Net (repayments) borrowings under credit facilities			0	375,000
Warehouse Repurchase Facility
Cash flows from financing activities:
Net (repayments) borrowings under credit facilities			(144,265)	(230,206)
Reportable Legal Entities | Lennar Corporation
Cash flows from operating activities:
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	213,645	218,469	251,725	362,549
Distributions of earnings from guarantor and non-guarantor subsidiaries			334,286	432,925
Other adjustments to reconcile net earnings (including net loss attributable to noncontrolling interests) to net cash provided by (used in) operating activities			(340,147)	(412,335)
Net cash used in operating activities			245,864	383,139
Cash flows from investing activities:
Investments in and contributions to unconsolidated entities, net of distributions of capital			0	0
Proceeds from sales of real estate owned			0	0
Receipts of principal payments on loans receivable and other				0
Originations of loans receivable			0	0
Purchases of commercial mortgage-backed securities bonds			0	0
Acquisition, net of cash acquired			(611,103)
Other			(3,897)	(6,704)
Distributions of capital from guarantor and non-guarantor subsidiaries			60,000	40,000
Intercompany			(657,990)	(1,008,886)
Net cash used in investing activities			(1,212,990)	(975,590)
Cash flows from financing activities:
Redemption of senior notes			400,000	250,000
Conversions and exchanges on convertible senior notes				(233,893)
Net payments on other borrowings			0
Net payments related to noncontrolling interests			0	0
Excess tax benefits from share-based awards			1,980	7,039
Common stock:
Issuances			693	594
Repurchases			(83)	(971)
Dividends			(18,778)	(17,191)
Intercompany			0	0
Net cash (used in) provided by financing activities			824,261	376,552
Net decrease in cash and cash equivalents			(142,865)	(215,899)
Cash and cash equivalents at beginning of period			697,112	575,821
Cash and cash equivalents at end of period	554,247	359,922	554,247	359,922
Reportable Legal Entities | Lennar Corporation | Rialto
Cash flows from financing activities:
Net proceeds on Rialto notes payable			0
Principal payments on Rialto notes payable				0
Reportable Legal Entities | Lennar Corporation | Senior Notes
Cash flows from financing activities:
Net proceeds from debt			1,240,449	495,974
Reportable Legal Entities | Lennar Corporation | Unsecured Revolving Credit Facility
Cash flows from financing activities:
Net (repayments) borrowings under credit facilities				375,000
Reportable Legal Entities | Lennar Corporation | Warehouse Repurchase Facility
Cash flows from financing activities:
Net (repayments) borrowings under credit facilities			0	0
Reportable Legal Entities | Guarantor Subsidiaries
Cash flows from operating activities:
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	248,623	247,893	305,455	413,755
Distributions of earnings from guarantor and non-guarantor subsidiaries			28,308	19,996
Other adjustments to reconcile net earnings (including net loss attributable to noncontrolling interests) to net cash provided by (used in) operating activities			(412,545)	(789,132)
Net cash used in operating activities			(78,782)	(355,381)
Cash flows from investing activities:
Investments in and contributions to unconsolidated entities, net of distributions of capital			(218,153)	(65,441)
Proceeds from sales of real estate owned			0	0
Receipts of principal payments on loans receivable and other				0
Originations of loans receivable			0	0
Purchases of commercial mortgage-backed securities bonds			0	0
Acquisition, net of cash acquired			0
Other			(23,370)	(30,269)
Distributions of capital from guarantor and non-guarantor subsidiaries			60,000	40,000
Intercompany			0	0
Net cash used in investing activities			(181,523)	(55,710)
Cash flows from financing activities:
Redemption of senior notes			0	0
Conversions and exchanges on convertible senior notes				0
Net payments on other borrowings			(28,705)	(87,532)
Net payments related to noncontrolling interests				0
Excess tax benefits from share-based awards			0	0
Common stock:
Issuances			0	0
Repurchases			0	0
Dividends			(365,455)	(453,755)
Intercompany			497,457	879,733
Net cash (used in) provided by financing activities			103,246	338,446
Net decrease in cash and cash equivalents			(157,059)	(72,645)
Cash and cash equivalents at beginning of period			377,070	336,048
Cash and cash equivalents at end of period	220,011	263,403	220,011	263,403
Reportable Legal Entities | Guarantor Subsidiaries | Rialto
Cash flows from financing activities:
Net proceeds on Rialto notes payable			0
Principal payments on Rialto notes payable				0
Reportable Legal Entities | Guarantor Subsidiaries | Senior Notes
Cash flows from financing activities:
Net proceeds from debt			0	0
Reportable Legal Entities | Guarantor Subsidiaries | Unsecured Revolving Credit Facility
Cash flows from financing activities:
Net (repayments) borrowings under credit facilities				0
Reportable Legal Entities | Guarantor Subsidiaries | Warehouse Repurchase Facility
Cash flows from financing activities:
Net (repayments) borrowings under credit facilities			(51)	0
Reportable Legal Entities | Non-Guarantor Subsidiaries
Cash flows from operating activities:
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	17,075	28,592	35,796	46,107
Distributions of earnings from guarantor and non-guarantor subsidiaries			0	0
Other adjustments to reconcile net earnings (including net loss attributable to noncontrolling interests) to net cash provided by (used in) operating activities			(43)	203,674
Net cash used in operating activities			35,753	249,781
Cash flows from investing activities:
Investments in and contributions to unconsolidated entities, net of distributions of capital			(1,103)	(41,775)
Proceeds from sales of real estate owned			55,521	43,412
Receipts of principal payments on loans receivable and other				5,484
Originations of loans receivable			(14,055)	(16,864)
Purchases of commercial mortgage-backed securities bonds			(40,357)	(33,005)
Acquisition, net of cash acquired			0
Other			(17,019)	(4,465)
Distributions of capital from guarantor and non-guarantor subsidiaries			0	0
Intercompany			0	0
Net cash used in investing activities			(17,013)	(47,213)
Cash flows from financing activities:
Redemption of senior notes			0	0
Conversions and exchanges on convertible senior notes				0
Net payments on other borrowings			63,201
Net payments related to noncontrolling interests			(47,589)	(73,028)
Excess tax benefits from share-based awards			0	0
Common stock:
Issuances			0	0
Repurchases			0	0
Dividends			(117,139)	(79,166)
Intercompany			160,533	129,153
Net cash (used in) provided by financing activities			(64,377)	(256,992)
Net decrease in cash and cash equivalents			(45,637)	(54,424)
Cash and cash equivalents at beginning of period			255,347	246,576
Cash and cash equivalents at end of period	209,710	192,152	209,710	192,152
Reportable Legal Entities | Non-Guarantor Subsidiaries | Rialto
Cash flows from financing activities:
Net proceeds on Rialto notes payable			25,340
Principal payments on Rialto notes payable				(2,999)
Reportable Legal Entities | Non-Guarantor Subsidiaries | Senior Notes
Cash flows from financing activities:
Net proceeds from debt			(4,509)	(746)
Reportable Legal Entities | Non-Guarantor Subsidiaries | Unsecured Revolving Credit Facility
Cash flows from financing activities:
Net (repayments) borrowings under credit facilities				0
Reportable Legal Entities | Non-Guarantor Subsidiaries | Warehouse Repurchase Facility
Cash flows from financing activities:
Net (repayments) borrowings under credit facilities			(144,214)	(230,206)
Consolidating Adjustments
Cash flows from operating activities:
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	(278,635)	(270,916)	(362,594)	(452,921)
Distributions of earnings from guarantor and non-guarantor subsidiaries			(362,594)	(452,921)
Other adjustments to reconcile net earnings (including net loss attributable to noncontrolling interests) to net cash provided by (used in) operating activities			362,594	452,921
Net cash used in operating activities			(362,594)	(452,921)
Cash flows from investing activities:
Investments in and contributions to unconsolidated entities, net of distributions of capital			0	0
Proceeds from sales of real estate owned			0	0
Receipts of principal payments on loans receivable and other				0
Originations of loans receivable			0	0
Purchases of commercial mortgage-backed securities bonds			0	0
Acquisition, net of cash acquired			0
Other			0	0
Distributions of capital from guarantor and non-guarantor subsidiaries			(120,000)	(80,000)
Intercompany			657,990	1,008,886
Net cash used in investing activities			537,990	928,886
Cash flows from financing activities:
Redemption of senior notes			0	0
Conversions and exchanges on convertible senior notes				0
Net payments on other borrowings			0	0
Net payments related to noncontrolling interests			0	0
Excess tax benefits from share-based awards			0	0
Common stock:
Issuances			0	0
Repurchases			0	0
Dividends			482,594	532,921
Intercompany			(657,990)	(1,008,886)
Net cash (used in) provided by financing activities			(175,396)	(475,965)
Net decrease in cash and cash equivalents			0	0
Cash and cash equivalents at beginning of period			0	0
Cash and cash equivalents at end of period	$ 0	$ 0	0	0
Consolidating Adjustments | Rialto
Cash flows from financing activities:
Net proceeds on Rialto notes payable			0
Principal payments on Rialto notes payable				0
Consolidating Adjustments | Senior Notes
Cash flows from financing activities:
Net proceeds from debt			0	0
Consolidating Adjustments | Unsecured Revolving Credit Facility
Cash flows from financing activities:
Net (repayments) borrowings under credit facilities				0
Consolidating Adjustments | Warehouse Repurchase Facility
Cash flows from financing activities:
Net (repayments) borrowings under credit facilities			$ 0	$ 0