Supplemental Financial Information (Condensed Consolidating Statement of Cash Flows) (Details) - USD ($) $ in Thousands	3 Months Ended
	Feb. 28, 2019	Feb. 28, 2018
Cash flows from operating activities:
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	$ 239,424	$ 136,817
Distributions of earnings from guarantor and non-guarantor subsidiaries	0	0
Other adjustments to reconcile net earnings (including net earnings attributable to noncontrolling interests) to net cash provided by operating activities	(763,847)	(292,346)
Net cash used in operating activities	(524,423)	(155,529)
Cash flows from investing activities:
Investments in and contributions to unconsolidated entities, net of distributions of capital	(63,837)	(41,648)
Proceeds from sales of real estate owned	2,696	18,080
Proceeds from sale of investment in unconsolidated entity	17,790
Proceeds from sale of Financial Services' retail mortgage and real estate brokerage business	24,446	0
Acquisitions, net of cash acquired	0	(1,076,771)
Other	(59,083)	(47,764)
Intercompany	0	0
Net cash used in investing activities	(77,988)	(1,003,992)
Cash flows from financing activities:
Debt issuance costs	0	(12,039)
Net payments related to noncontrolling interests	(82,978)	(84,219)
Net payments related to noncontrolling interests	(2,949)	(19,908)
Common stock:
Issuances	607	0
Repurchases	(49,143)	(25,355)
Dividends	(12,860)	(9,617)
Intercompany	0	0
Net cash provided by (used in) financing activities	69,022	(450,349)
Net decrease in cash and cash equivalents and restricted cash	(533,389)	(1,609,870)
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	1,062,589	1,084,214
Unsecured Revolving Credit Facility
Cash flows from financing activities:
Net borrowings under credit facilities	725,000	45,300
Warehouse Repurchase Facility
Cash flows from financing activities:
Net borrowings under credit facilities	(508,655)	(344,511)
Reportable Legal Entities | Lennar Corporation
Cash flows from operating activities:
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	239,910	136,215
Distributions of earnings from guarantor and non-guarantor subsidiaries	298,410	168,638
Other adjustments to reconcile net earnings (including net earnings attributable to noncontrolling interests) to net cash provided by operating activities	(339,730)	(274,453)
Net cash used in operating activities	198,590	30,400
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
Proceeds from sale of investment in unconsolidated entity	0
Proceeds from sale of Financial Services' retail mortgage and real estate brokerage business	0
Acquisitions, net of cash acquired		(1,140,392)
Other	(8,411)	(9,045)
Intercompany	(1,121,791)	(921,113)
Net cash used in investing activities	(1,130,202)	(2,070,550)
Cash flows from financing activities:
Net payments related to noncontrolling interests	0	0
Net payments related to noncontrolling interests	0	0
Common stock:
Issuances	607
Repurchases	(49,143)	(25,355)
Dividends	(12,860)	(9,617)
Intercompany	0	0
Net cash provided by (used in) financing activities	663,604	455,911
Net decrease in cash and cash equivalents and restricted cash	(268,008)	(1,584,239)
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	356,686	354,316
Reportable Legal Entities | Lennar Corporation | Unsecured Revolving Credit Facility
Cash flows from financing activities:
Net borrowings under credit facilities	725,000	500,000
Reportable Legal Entities | Lennar Corporation | Warehouse Repurchase Facility
Cash flows from financing activities:
Net 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)	289,343	167,049
Distributions of earnings from guarantor and non-guarantor subsidiaries	4,773	10,200
Other adjustments to reconcile net earnings (including net earnings attributable to noncontrolling interests) to net cash provided by operating activities	(1,082,776)	(360,387)
Net cash used in operating activities	(788,660)	(183,138)
Cash flows from investing activities:
Investments in and contributions to unconsolidated entities, net of distributions of capital	(60,660)	(9,659)
Proceeds from sales of real estate owned	0	0
Proceeds from sale of investment in unconsolidated entity	0
Proceeds from sale of Financial Services' retail mortgage and real estate brokerage business	21,517
Acquisitions, net of cash acquired		24,088
Other	(15,686)	(25,220)
Intercompany	0	0
Net cash used in investing activities	(54,829)	164,388
Cash flows from financing activities:
Net payments related to noncontrolling interests	(79,281)	(14,806)
Net payments related to noncontrolling interests	0	0
Common stock:
Issuances	0
Repurchases	0	0
Dividends	(289,343)	(167,049)
Intercompany	973,489	729,979
Net cash provided by (used in) financing activities	610,666	93,397
Net decrease in cash and cash equivalents and restricted cash	(232,823)	74,647
Cash and cash equivalents and restricted cash at beginning of period	721,968	366,946
Cash and cash equivalents and restricted cash at end of period	489,145	441,593
Reportable Legal Entities | Guarantor Subsidiaries | Unsecured Revolving Credit Facility
Cash flows from financing activities:
Net borrowings under credit facilities	0	(454,700)
Reportable Legal Entities | Guarantor Subsidiaries | Warehouse Repurchase Facility
Cash flows from financing activities:
Net borrowings under credit facilities	5,801	(27)
Reportable Legal Entities | Non-Guarantor Subsidiaries
Cash flows from operating activities:
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	13,354	12,391
Distributions of earnings from guarantor and non-guarantor subsidiaries	0	0
Other adjustments to reconcile net earnings (including net earnings attributable to noncontrolling interests) to net cash provided by operating activities	355,476	163,656
Net cash used in operating activities	368,830	176,047
Cash flows from investing activities:
Investments in and contributions to unconsolidated entities, net of distributions of capital	(3,177)	(31,989)
Proceeds from sales of real estate owned	2,696	18,080
Proceeds from sale of investment in unconsolidated entity	17,790
Proceeds from sale of Financial Services' retail mortgage and real estate brokerage business	2,929
Acquisitions, net of cash acquired		39,533
Other	(34,986)	(13,499)
Intercompany	0	0
Net cash used in investing activities	(14,748)	(18,943)
Cash flows from financing activities:
Net payments related to noncontrolling interests	(3,697)	(69,413)
Net payments related to noncontrolling interests	(2,949)	(19,908)
Common stock:
Issuances	0
Repurchases	0	0
Dividends	(13,840)	(11,789)
Intercompany	148,302	191,134
Net cash provided by (used in) financing activities	(386,640)	(257,382)
Net decrease in cash and cash equivalents and restricted cash	(32,558)	(100,278)
Cash and cash equivalents and restricted cash at beginning of period	249,316	388,583
Cash and cash equivalents and restricted cash at end of period	216,758	288,305
Reportable Legal Entities | Non-Guarantor Subsidiaries | Unsecured Revolving Credit Facility
Cash flows from financing activities:
Net borrowings under credit facilities	0	0
Reportable Legal Entities | Non-Guarantor Subsidiaries | Warehouse Repurchase Facility
Cash flows from financing activities:
Net borrowings under credit facilities	(514,456)	(344,484)
Consolidating Adjustments
Cash flows from operating activities:
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	(303,183)	(178,838)
Distributions of earnings from guarantor and non-guarantor subsidiaries	(303,183)	(178,838)
Other adjustments to reconcile net earnings (including net earnings attributable to noncontrolling interests) to net cash provided by operating activities	303,183	178,838
Net cash used in operating activities	(303,183)	(178,838)
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
Proceeds from sale of investment in unconsolidated entity	0
Proceeds from sale of Financial Services' retail mortgage and real estate brokerage business	0
Acquisitions, net of cash acquired		0
Other	0	0
Intercompany	1,121,791	921,113
Net cash used in investing activities	1,121,791	921,113
Cash flows from financing activities:
Net payments related to noncontrolling interests	0	0
Net payments related to noncontrolling interests	0	0
Common stock:
Issuances	0
Repurchases	0	0
Dividends	303,183	178,838
Intercompany	(1,121,791)	(921,113)
Net cash provided by (used in) financing activities	(818,608)	(742,275)
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
Consolidating Adjustments | Unsecured Revolving Credit Facility
Cash flows from financing activities:
Net borrowings under credit facilities	0	0
Consolidating Adjustments | Warehouse Repurchase Facility
Cash flows from financing activities:
Net borrowings under credit facilities	$ 0	0
Senior Notes
Cash flows from financing activities:
Debt issuance costs		(12,039)
Senior Notes | Reportable Legal Entities | Lennar Corporation
Cash flows from financing activities:
Debt issuance costs		(9,117)
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		(2,922)
Senior Notes | Consolidating Adjustments
Cash flows from financing activities:
Debt issuance costs		$ 0