Supplemental Financial Information (Condensed Consolidating Statement of Cash Flows) (Details) - USD ($) $ in Thousands	3 Months Ended
Feb. 29, 2020	Feb. 28, 2019
Cash flows from operating activities:
Net earnings (including net loss attributable to noncontrolling interests)	$ 391,223	$ 239,424
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	(8,247)	(763,847)
Net cash provided by (used in) operating activities	382,976	(524,423)
Cash flows from investing activities:
Investments in and contributions to unconsolidated and consolidated entities, net of distributions of capital	7,717	(63,837)
Proceeds from sales of real estate owned		2,696
Proceeds from sale of investment in unconsolidated entity	0	17,790
Proceeds from the sales of operating properties and equipment and other assets	13,067	0
Proceeds from sale of Financial Services' businesses	0	24,446
Other	(7,605)	(59,083)
Intercompany	0	0
Net cash provided by (used in) investing activities	13,179	(77,988)
Cash flows from financing activities:
Net repayments on other borrowings, other liabilities, and other notes payable	(71,153)	(82,978)
Net receipts related to noncontrolling interests	72,179	(2,949)
Common stock:
Issuances	0	607
Repurchases	(295,988)	(49,143)
Dividends	(39,240)	(12,860)
Intercompany	0	0
Net cash (used in) provided by financing activities	(789,804)	69,022
Net decrease in cash and cash equivalents and restricted cash	(393,649)	(533,389)
Cash and cash equivalents and restricted cash at beginning of period	1,468,691	1,595,978
Cash and cash equivalents and restricted cash at end of period	1,075,042	1,062,589
Unsecured Revolving Credit Facility
Cash flows from financing activities:
Net borrowings (repayments) under credit facilities	300,000	725,000
Warehouse Repurchase Facility
Cash flows from financing activities:
Net borrowings (repayments) under credit facilities	(755,602)	(508,655)
Reportable Legal Entities \| Lennar Corporation
Cash flows from operating activities:
Net earnings (including net loss attributable to noncontrolling interests)	398,452	239,910
Distributions of earnings from guarantor and non-guarantor subsidiaries	501,196	298,410
Other adjustments to reconcile net earnings (including net loss attributable to noncontrolling interests) to net cash provided by (used in) operating activities	(514,919)	(339,730)
Net cash provided by (used in) operating activities	384,729	198,590
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
Proceeds from sale of investment in unconsolidated entity		0
Proceeds from the sales of operating properties and equipment and other assets	0
Proceeds from sale of Financial Services' businesses		0
Other	(330)	(8,411)
Intercompany	(672,022)	(1,121,791)
Net cash provided by (used in) investing activities	(672,352)	(1,130,202)
Cash flows from financing activities:
Net repayments on other borrowings, other liabilities, and other notes payable	0	0
Net receipts related to noncontrolling interests	0	0
Common stock:
Issuances		607
Repurchases	(295,988)	(49,143)
Dividends	(39,240)	(12,860)
Intercompany	0	0
Net cash (used in) provided by financing activities	(35,228)	663,604
Net decrease in cash and cash equivalents and restricted cash	(322,851)	(268,008)
Cash and cash equivalents and restricted cash at beginning of period	713,828	624,694
Cash and cash equivalents and restricted cash at end of period	390,977	356,686
Reportable Legal Entities \| Lennar Corporation \| Unsecured Revolving Credit Facility
Cash flows from financing activities:
Net borrowings (repayments) under credit facilities	300,000	725,000
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 loss attributable to noncontrolling interests)	460,571	289,343
Distributions of earnings from guarantor and non-guarantor subsidiaries	0	4,773
Other adjustments to reconcile net earnings (including net loss attributable to noncontrolling interests) to net cash provided by (used in) operating activities	(686,494)	(1,082,776)
Net cash provided by (used in) operating activities	(225,923)	(788,660)
Cash flows from investing activities:
Investments in and contributions to unconsolidated and consolidated entities, net of distributions of capital	(1,178)	(60,660)
Proceeds from sales of real estate owned		0
Proceeds from sale of investment in unconsolidated entity		0
Proceeds from the sales of operating properties and equipment and other assets	13,067
Proceeds from sale of Financial Services' businesses		21,517
Other	913	(15,686)
Intercompany	0	0
Net cash provided by (used in) investing activities	12,802	(54,829)
Cash flows from financing activities:
Net repayments on other borrowings, other liabilities, and other notes payable	(55,580)	(79,281)
Net receipts related to noncontrolling interests	0	0
Common stock:
Issuances		0
Repurchases	0	0
Dividends	(460,571)	(289,343)
Intercompany	605,744	973,489
Net cash (used in) provided by financing activities	89,593	610,666
Net decrease in cash and cash equivalents and restricted cash	(123,528)	(232,823)
Cash and cash equivalents and restricted cash at beginning of period	532,304	721,968
Cash and cash equivalents and restricted cash at end of period	408,776	489,145
Reportable Legal Entities \| Guarantor Subsidiaries \| Unsecured Revolving Credit Facility
Cash flows from financing activities:
Net borrowings (repayments) under credit facilities	0	0
Reportable Legal Entities \| Guarantor Subsidiaries \| Warehouse Repurchase Facility
Cash flows from financing activities:
Net borrowings (repayments) under credit facilities	0	5,801
Reportable Legal Entities \| Non-Guarantor Subsidiaries
Cash flows from operating activities:
Net earnings (including net loss attributable to noncontrolling interests)	33,396	13,354
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	691,970	355,476
Net cash provided by (used in) operating activities	725,366	368,830
Cash flows from investing activities:
Investments in and contributions to unconsolidated and consolidated entities, net of distributions of capital	8,895	(3,177)
Proceeds from sales of real estate owned		2,696
Proceeds from sale of investment in unconsolidated entity		17,790
Proceeds from the sales of operating properties and equipment and other assets	0
Proceeds from sale of Financial Services' businesses		2,929
Other	(8,188)	(34,986)
Intercompany	0	0
Net cash provided by (used in) investing activities	707	(14,748)
Cash flows from financing activities:
Net repayments on other borrowings, other liabilities, and other notes payable	(15,573)	(3,697)
Net receipts related to noncontrolling interests	72,179	(2,949)
Common stock:
Issuances		0
Repurchases	0	0
Dividends	(40,625)	(13,840)
Intercompany	66,278	148,302
Net cash (used in) provided by financing activities	(673,343)	(386,640)
Net decrease in cash and cash equivalents and restricted cash	52,730	(32,558)
Cash and cash equivalents and restricted cash at beginning of period	222,559	249,316
Cash and cash equivalents and restricted cash at end of period	275,289	216,758
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	(755,602)	(514,456)
Consolidating Adjustments
Cash flows from operating activities:
Net earnings (including net loss attributable to noncontrolling interests)	(501,196)	(303,183)
Distributions of earnings from guarantor and non-guarantor subsidiaries	(501,196)	(303,183)
Other adjustments to reconcile net earnings (including net loss attributable to noncontrolling interests) to net cash provided by (used in) operating activities	501,196	303,183
Net cash provided by (used in) operating activities	(501,196)	(303,183)
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
Proceeds from sale of investment in unconsolidated entity		0
Proceeds from the sales of operating properties and equipment and other assets	0
Proceeds from sale of Financial Services' businesses		0
Other	0	0
Intercompany	672,022	1,121,791
Net cash provided by (used in) investing activities	672,022	1,121,791
Cash flows from financing activities:
Net repayments on other borrowings, other liabilities, and other notes payable	0	0
Net receipts related to noncontrolling interests	0	0
Common stock:
Issuances		0
Repurchases	0	0
Dividends	501,196	303,183
Intercompany	(672,022)	(1,121,791)
Net cash (used in) provided by financing activities	(170,826)	(818,608)
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 (repayments) under credit facilities	0	0
Consolidating Adjustments \| Warehouse Repurchase Facility
Cash flows from financing activities:
Net borrowings (repayments) under credit facilities	$ 0	$ 0

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