Supplemental Financial Information (Condensed Consolidating Statement of Cash Flows) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2019	Aug. 31, 2018
Cash flows from operating activities:
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	$ 512,643	$ 467,620	$ 1,170,936	$ 919,286
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 operating activities			(872,643)	(192,869)
Net cash provided by operating activities			298,293	726,417
Cash flows from investing activities:
Investments in and contributions to unconsolidated and consolidated entities, net of distributions of capital			(79,593)	(74,579)
Proceeds from sales of real estate owned			8,560	28,697
Proceeds from sale of investment in unconsolidated entities			17,790	199,654
Purchases of commercial mortgage-backed securities bonds			0	(31,068)
Proceeds from sale of Financial Services' businesses			24,446	0
Acquisitions, net of cash and restricted cash acquired			0	(1,078,345)
Other			(10,560)	(63,233)
Distributions of capital from guarantor and non-guarantor subsidiaries				0
Intercompany			0	0
Net cash used in investing activities			(39,357)	(1,018,874)
Cash flows from financing activities:
Debt issuance costs			0	(12,459)
Redemption of senior notes			(500,000)	(825,000)
Net borrowings (repayments) on convertible senior notes, other borrowings, other liabilities, and other notes payable			(595,923)	(368,913)
Net repayments related to noncontrolling interests			(8,294)	(64,619)
Common stock:
Issuances			388	3,189
Repurchases			(419,322)	(49,490)
Dividends			(38,776)	(35,985)
Intercompany			0	0
Net cash used in financing activities			(785,050)	(1,318,085)
Net decrease in cash and cash equivalents and restricted cash			(526,114)	(1,610,542)
Cash and cash equivalents and restricted cash at beginning of period			1,595,978	2,694,084
Cash and cash equivalents and restricted cash at end of period	1,069,864	1,083,542	1,069,864	1,083,542
Unsecured Revolving Credit Facility
Cash flows from financing activities:
Net borrowings (repayments) under credit facilities			700,000	195,300
Warehouse Repurchase Facility
Cash flows from financing activities:
Net borrowings (repayments) under credit facilities			(423,123)	(100,963)
Reportable Legal Entities | Lennar Corporation
Cash flows from operating activities:
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	513,366	453,211	1,174,748	899,683
Distributions of earnings from guarantor and non-guarantor subsidiaries			1,356,321	1,073,307
Other adjustments to reconcile net earnings (including net loss attributable to noncontrolling interests) to net cash provided by operating activities			(1,261,601)	(1,142,909)
Net cash provided by operating activities			1,269,468	830,081
Cash flows from investing activities:
Investments in and contributions to unconsolidated and consolidated entities, net of distributions of capital			0	0
Proceeds from sales of real estate owned			0	0
Proceeds from sale of investment in unconsolidated entities			0	0
Purchases of commercial mortgage-backed securities bonds				0
Proceeds from sale of Financial Services' businesses			0
Acquisitions, net of cash and restricted cash acquired				(1,140,367)
Other			(2,164)	(27,136)
Distributions of capital from guarantor and non-guarantor subsidiaries				65,000
Intercompany			(1,256,112)	(1,035,226)
Net cash used in investing activities			(1,258,276)	(2,137,729)
Cash flows from financing activities:
Redemption of senior notes				(735,626)
Net borrowings (repayments) on convertible senior notes, other borrowings, other liabilities, and other notes payable			(500,000)	0
Net repayments related to noncontrolling interests			0	0
Common stock:
Issuances			388	3,189
Repurchases			(419,322)	(49,490)
Dividends			(38,776)	(35,985)
Intercompany			0	0
Net cash used in financing activities			(257,710)	(177,101)
Net decrease in cash and cash equivalents and restricted cash			(246,518)	(1,484,749)
Cash and cash equivalents and restricted cash at beginning of period			624,694	1,938,555
Cash and cash equivalents and restricted cash at end of period	378,176	453,806	378,176	453,806
Reportable Legal Entities | Lennar Corporation | Unsecured Revolving Credit Facility
Cash flows from financing activities:
Net borrowings (repayments) under credit facilities			700,000	650,000
Reportable Legal Entities | Lennar Corporation | Warehouse Repurchase Facility
Cash flows from financing activities:
Net borrowings (repayments) 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)	557,224	528,265	1,322,333	1,055,410
Distributions of earnings from guarantor and non-guarantor subsidiaries			76,352	58,807
Other adjustments to reconcile net earnings (including net loss attributable to noncontrolling interests) to net cash provided by operating activities			(1,342,672)	(102,940)
Net cash provided by operating activities			56,013	1,011,277
Cash flows from investing activities:
Investments in and contributions to unconsolidated and consolidated entities, net of distributions of capital			(135,395)	(67,664)
Proceeds from sales of real estate owned			0	0
Proceeds from sale of investment in unconsolidated entities			0	199,654
Purchases of commercial mortgage-backed securities bonds				0
Proceeds from sale of Financial Services' businesses			21,517
Acquisitions, net of cash and restricted cash acquired				22,654
Other			34,935	(20,555)
Distributions of capital from guarantor and non-guarantor subsidiaries				20,000
Intercompany			0	0
Net cash used in investing activities			(78,943)	154,089
Cash flows from financing activities:
Redemption of senior notes				(89,374)
Net borrowings (repayments) on convertible senior notes, other borrowings, other liabilities, and other notes payable			(117,444)	(78,528)
Net repayments related to noncontrolling interests			0	0
Common stock:
Issuances			0	0
Repurchases			0	0
Dividends			(1,322,333)	(1,120,410)
Intercompany			1,181,304	651,665
Net cash used in financing activities			(258,482)	(1,150,573)
Net decrease in cash and cash equivalents and restricted cash			(281,412)	14,793
Cash and cash equivalents and restricted cash at beginning of period			721,603	366,946
Cash and cash equivalents and restricted cash at end of period	440,191	381,739	440,191	381,739
Reportable Legal Entities | Guarantor Subsidiaries | Unsecured Revolving Credit Facility
Cash flows from financing activities:
Net borrowings (repayments) under credit facilities			0	(454,700)
Reportable Legal Entities | Guarantor Subsidiaries | Warehouse Repurchase Facility
Cash flows from financing activities:
Net borrowings (repayments) under credit facilities			(9)	(81)
Reportable Legal Entities | Non-Guarantor Subsidiaries
Cash flows from operating activities:
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	65,478	35,418	106,528	96,307
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 operating activities			298,957	(79,134)
Net cash provided by operating activities			405,485	17,173
Cash flows from investing activities:
Investments in and contributions to unconsolidated and consolidated entities, net of distributions of capital			55,802	(6,915)
Proceeds from sales of real estate owned			8,560	28,697
Proceeds from sale of investment in unconsolidated entities			17,790	0
Purchases of commercial mortgage-backed securities bonds				(31,068)
Proceeds from sale of Financial Services' businesses			2,929
Acquisitions, net of cash and restricted cash acquired				39,368
Other			(43,331)	(15,542)
Distributions of capital from guarantor and non-guarantor subsidiaries				0
Intercompany			0	0
Net cash used in investing activities			41,750	14,540
Cash flows from financing activities:
Redemption of senior notes				0
Net borrowings (repayments) on convertible senior notes, other borrowings, other liabilities, and other notes payable			21,521	(290,385)
Net repayments related to noncontrolling interests			(8,294)	(64,619)
Common stock:
Issuances			0	0
Repurchases			0	0
Dividends			(110,340)	(96,704)
Intercompany			74,808	383,561
Net cash used in financing activities			(445,419)	(172,299)
Net decrease in cash and cash equivalents and restricted cash			1,816	(140,586)
Cash and cash equivalents and restricted cash at beginning of period			249,681	388,583
Cash and cash equivalents and restricted cash at end of period	251,497	247,997	251,497	247,997
Reportable Legal Entities | Non-Guarantor Subsidiaries | Unsecured Revolving Credit Facility
Cash flows from financing activities:
Net borrowings (repayments) under credit facilities			0	0
Reportable Legal Entities | Non-Guarantor Subsidiaries | Warehouse Repurchase Facility
Cash flows from financing activities:
Net borrowings (repayments) under credit facilities			(423,114)	(100,882)
Consolidating Adjustments
Cash flows from operating activities:
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	(623,425)	(549,274)	(1,432,673)	(1,132,114)
Distributions of earnings from guarantor and non-guarantor subsidiaries			(1,432,673)	(1,132,114)
Other adjustments to reconcile net earnings (including net loss attributable to noncontrolling interests) to net cash provided by operating activities			1,432,673	1,132,114
Net cash provided by operating activities			(1,432,673)	(1,132,114)
Cash flows from investing activities:
Investments in and contributions to unconsolidated and consolidated entities, net of distributions of capital			0	0
Proceeds from sales of real estate owned			0	0
Proceeds from sale of investment in unconsolidated entities			0	0
Purchases of commercial mortgage-backed securities bonds				0
Proceeds from sale of Financial Services' businesses			0
Acquisitions, net of cash and restricted cash acquired				0
Other			0	0
Distributions of capital from guarantor and non-guarantor subsidiaries				(85,000)
Intercompany			1,256,112	1,035,226
Net cash used in investing activities			1,256,112	950,226
Cash flows from financing activities:
Redemption of senior notes				0
Net borrowings (repayments) on convertible senior notes, other borrowings, other liabilities, and other notes payable			0	0
Net repayments related to noncontrolling interests			0	0
Common stock:
Issuances			0	0
Repurchases			0	0
Dividends			1,432,673	1,217,114
Intercompany			(1,256,112)	(1,035,226)
Net cash used in financing activities			176,561	181,888
Net decrease in cash and cash equivalents and restricted cash			0	0
Cash and cash equivalents and restricted cash at beginning of period			0	0
Cash and cash equivalents and restricted cash at end of period	$ 0	$ 0	0	0
Consolidating Adjustments | Unsecured Revolving Credit Facility
Cash flows from financing activities:
Net borrowings (repayments) under credit facilities			0	0
Consolidating Adjustments | Warehouse Repurchase Facility
Cash flows from financing activities:
Net borrowings (repayments) under credit facilities			$ 0	0
Senior Notes
Cash flows from financing activities:
Debt issuance costs				(12,459)
Senior Notes | Reportable Legal Entities | Lennar Corporation
Cash flows from financing activities:
Debt issuance costs				(9,189)
Senior Notes | Reportable Legal Entities | Guarantor Subsidiaries
Cash flows from financing activities:
Debt issuance costs				0
Senior Notes | Reportable Legal Entities | Non-Guarantor Subsidiaries
Cash flows from financing activities:
Debt issuance costs				(3,270)
Senior Notes | Consolidating Adjustments
Cash flows from financing activities:
Debt issuance costs				$ 0