Supplemental Financial Information (Condensed Consolidating Statement of Cash Flows) (Details) - USD ($) $ in Thousands	3 Months Ended
	Feb. 28, 2017	Feb. 29, 2016
Cash flows from operating activities:
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	$ 29,674	$ 145,452
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	49,650	(361,339)
Net cash provided by (used in) operating activities	79,324	(215,887)
Cash flows from investing activities:
Investments in and contributions to unconsolidated entities, net of distributions of capital	(111,745)	(34,615)
Proceeds from sales of real estate owned	24,215	20,256
Receipts of principal payments on loans receivable and other	1,972	2,725
Originations of loans receivable	(9,330)	(10,046)
Purchases of commercial mortgage-backed securities bonds	(40,357)	(23,078)
Acquisition, net of cash acquired	(596,172)	(600)
Other	(32,693)	(19,103)
Distributions of capital from guarantor and non-guarantor subsidiaries	0	0
Intercompany	0	0
Net cash used in investing activities	(766,082)	(66,586)
Cash flows from financing activities:
Debt issuance costs	(10,848)	(684)
Conversions and exchanges on convertible senior notes	0	(162,852)
Net payments on other borrowings	(8,847)	(52,383)
Net payments related to noncontrolling interests	(25,718)	(41,950)
Excess tax benefits from share-based awards	1,953	7,029
Common stock:
Issuances	99	0
Repurchases	(83)	(219)
Dividends	(9,400)	(8,552)
Intercompany	0	0
Net cash (used in) provided by financing activities	286,289	(155,513)
Net decrease in cash and cash equivalents	(400,469)	(437,986)
Cash and cash equivalents at beginning of period	1,329,529	1,158,445
Cash and cash equivalents at end of period	929,060	720,459
Rialto
Cash flows from financing activities:
Net proceeds on Rialto notes payable	(32,489)
Principal payments on Rialto notes payable	(2,971)	(669)
Common stock:
Cash and cash equivalents at beginning of period	148,827
Cash and cash equivalents at end of period	162,513
Senior Notes
Cash flows from financing activities:
Debt issuance costs		(684)
Net proceeds from debt	589,152
Unsecured Revolving Credit Facility
Cash flows from financing activities:
Net (repayments) borrowings under credit facilities	250,000	500,000
Warehouse Repurchase Facility
Cash flows from financing activities:
Net (repayments) borrowings under credit facilities	(543,356)	(395,233)
Reportable Legal Entities | Lennar Corporation
Cash flows from operating activities:
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	38,080	144,080
Distributions of earnings from guarantor and non-guarantor subsidiaries	77,066	177,467
Other adjustments to reconcile net earnings (including net loss attributable to noncontrolling interests) to net cash provided by (used in) operating activities	(41,356)	(254,499)
Net cash provided by (used in) operating activities	73,790	67,048
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
Originations of loans receivable	0	0
Purchases of commercial mortgage-backed securities bonds	0	0
Acquisition, net of cash acquired	(596,172)
Other	(2,824)	(3,400)
Distributions of capital from guarantor and non-guarantor subsidiaries	30,000	20,000
Intercompany	(634,418)	(699,551)
Net cash used in investing activities	(1,203,414)	(682,951)
Cash flows from financing activities:
Conversions and exchanges on convertible senior notes		(162,852)
Net payments on other borrowings	0
Net payments related to noncontrolling interests	0	0
Excess tax benefits from share-based awards	1,953	7,029
Common stock:
Issuances	99
Repurchases	(83)	(219)
Dividends	(9,400)	(8,552)
Intercompany	0	0
Net cash (used in) provided by financing activities	837,729	335,406
Net decrease in cash and cash equivalents	(291,895)	(280,497)
Cash and cash equivalents at beginning of period	697,112	575,821
Cash and cash equivalents at end of period	405,217	295,324
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:
Debt issuance costs		0
Net proceeds from debt	595,160
Reportable Legal Entities | Lennar Corporation | Unsecured Revolving Credit Facility
Cash flows from financing activities:
Net (repayments) borrowings under credit facilities	250,000	500,000
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)	56,832	165,862
Distributions of earnings from guarantor and non-guarantor subsidiaries	6,893	4,538
Other adjustments to reconcile net earnings (including net loss attributable to noncontrolling interests) to net cash provided by (used in) operating activities	(421,010)	(660,587)
Net cash provided by (used in) operating activities	(357,285)	(490,187)
Cash flows from investing activities:
Investments in and contributions to unconsolidated entities, net of distributions of capital	(111,072)	(32,149)
Proceeds from sales of real estate owned	0	0
Originations of loans receivable	0	0
Purchases of commercial mortgage-backed securities bonds	0	0
Acquisition, net of cash acquired	0
Other	(9,303)	(14,297)
Distributions of capital from guarantor and non-guarantor subsidiaries	30,000	20,000
Intercompany	0	0
Net cash used in investing activities	(90,375)	(26,446)
Cash flows from financing activities:
Conversions and exchanges on convertible senior notes		0
Net payments on other borrowings	(15,217)	(52,383)
Net payments related to noncontrolling interests		0
Excess tax benefits from share-based awards	0	0
Common stock:
Issuances	0
Repurchases	0	0
Dividends	(86,832)	(185,862)
Intercompany	440,388	646,727
Net cash (used in) provided by financing activities	338,314	408,482
Net decrease in cash and cash equivalents	(109,346)	(108,151)
Cash and cash equivalents at beginning of period	377,070	336,048
Cash and cash equivalents at end of period	267,724	227,897
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:
Debt issuance costs		0
Net proceeds from debt	0
Reportable Legal Entities | Guarantor Subsidiaries | Unsecured Revolving Credit Facility
Cash flows from financing activities:
Net (repayments) borrowings under credit facilities	0	0
Reportable Legal Entities | Guarantor Subsidiaries | Warehouse Repurchase Facility
Cash flows from financing activities:
Net (repayments) borrowings under credit facilities	(25)	0
Reportable Legal Entities | Non-Guarantor Subsidiaries
Cash flows from operating activities:
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	18,721	17,515
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	428,057	371,742
Net cash provided by (used in) operating activities	446,778	389,257
Cash flows from investing activities:
Investments in and contributions to unconsolidated entities, net of distributions of capital	(673)	(2,466)
Proceeds from sales of real estate owned	24,215	20,256
Originations of loans receivable	(9,330)	(10,046)
Purchases of commercial mortgage-backed securities bonds	(40,357)	(23,078)
Acquisition, net of cash acquired	0
Other	(20,566)	(1,406)
Distributions of capital from guarantor and non-guarantor subsidiaries	0	0
Intercompany	0	0
Net cash used in investing activities	(46,711)	(16,740)
Cash flows from financing activities:
Conversions and exchanges on convertible senior notes		0
Net payments on other borrowings	6,370
Net payments related to noncontrolling interests	(25,718)	(41,950)
Excess tax benefits from share-based awards	0	0
Common stock:
Issuances	0
Repurchases	0	0
Dividends	(57,127)	(36,143)
Intercompany	194,030	52,824
Net cash (used in) provided by financing activities	(399,295)	(421,855)
Net decrease in cash and cash equivalents	772	(49,338)
Cash and cash equivalents at beginning of period	255,347	246,576
Cash and cash equivalents at end of period	256,119	197,238
Reportable Legal Entities | Non-Guarantor Subsidiaries | Rialto
Cash flows from financing activities:
Net proceeds on Rialto notes payable	(32,489)
Principal payments on Rialto notes payable		(669)
Reportable Legal Entities | Non-Guarantor Subsidiaries | Senior Notes
Cash flows from financing activities:
Debt issuance costs		(684)
Net proceeds from debt	(6,008)
Reportable Legal Entities | Non-Guarantor Subsidiaries | Unsecured Revolving Credit Facility
Cash flows from financing activities:
Net (repayments) borrowings under credit facilities	0	0
Reportable Legal Entities | Non-Guarantor Subsidiaries | Warehouse Repurchase Facility
Cash flows from financing activities:
Net (repayments) borrowings under credit facilities	(543,331)	(395,233)
Consolidating Adjustments
Cash flows from operating activities:
Net earnings (including net earnings (loss) attributable to noncontrolling interests)	(83,959)	(182,005)
Distributions of earnings from guarantor and non-guarantor subsidiaries	(83,959)	(182,005)
Other adjustments to reconcile net earnings (including net loss attributable to noncontrolling interests) to net cash provided by (used in) operating activities	83,959	182,005
Net cash provided by (used in) operating activities	(83,959)	(182,005)
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
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	(60,000)	(40,000)
Intercompany	634,418	699,551
Net cash used in investing activities	574,418	659,551
Cash flows from financing activities:
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
Repurchases	0	0
Dividends	143,959	222,005
Intercompany	(634,418)	(699,551)
Net cash (used in) provided by financing activities	(490,459)	(477,546)
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
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:
Debt issuance costs		0
Net proceeds from debt	0
Consolidating Adjustments | Unsecured Revolving Credit Facility
Cash flows from financing activities:
Net (repayments) borrowings under credit facilities	0	0
Consolidating Adjustments | Warehouse Repurchase Facility
Cash flows from financing activities:
Net (repayments) borrowings under credit facilities	$ 0	$ 0