Supplemental Financial Information (Condensed Consolidating Statement of Operations and Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Feb. 29, 2020	Feb. 28, 2019
Revenues:
Revenues	$ 4,505,337	$ 3,868,082
Cost and expenses:
Corporate general and administrative	86,847	79,343
Total costs and expenses	4,075,919	3,545,317
Equity in earnings (loss) from unconsolidated entities	(2,572)	(5,710)
Earnings before income taxes	423,552	319,124
Benefit (provision) for income taxes	(32,329)	(79,700)
Equity in earnings from subsidiaries		0
Net earnings (including net loss attributable to noncontrolling interests)	391,223	239,424
Less: Net earnings (loss) attributable to noncontrolling interests	(7,229)	(486)
Net earnings attributable to Lennar	398,452	239,910
Other comprehensive income (loss), net of tax:
Net unrealized gain (loss) on securities available-for-sale	(46)	208
Total other comprehensive income (loss), net of tax	(46)	208
Total comprehensive income attributable to Lennar	398,406	240,118
Total comprehensive loss attributable to noncontrolling interests	(7,229)	(486)
Homebuilding
Revenues:
Revenues	4,172,116	3,623,721
Cost and expenses:
Cost and expenses	3,697,806	3,238,835
Equity in earnings (loss) from unconsolidated entities	(4,546)	(13,756)
Other income (expense), net	(9,366)	(1,535)
Financial Services
Revenues:
Revenues	198,661	143,311
Cost and expenses:
Cost and expenses	151,344	124,339
Multifamily
Revenues:
Revenues	132,617	97,394
Cost and expenses:
Cost and expenses	137,348	101,178
Equity in earnings (loss) from unconsolidated entities	6,516	10,581
Lennar Other
Revenues:
Revenues	1,943	3,656
Cost and expenses:
Cost and expenses	2,574	1,622
Equity in earnings (loss) from unconsolidated entities	119	8,330
Other income (expense), net	1,411	(7,261)
Reportable Legal Entities | Lennar Corporation
Revenues:
Revenues	0	0
Cost and expenses:
Corporate general and administrative	84,010	77,529
Total costs and expenses	84,010	77,529
Earnings before income taxes	(84,367)	(77,937)
Benefit (provision) for income taxes	6,328	19,437
Equity in earnings from subsidiaries	476,491	298,410
Net earnings (including net loss attributable to noncontrolling interests)	398,452	239,910
Less: Net earnings (loss) attributable to noncontrolling interests	0	0
Net earnings attributable to Lennar	398,452	239,910
Other comprehensive income (loss), net of tax:
Net unrealized gain (loss) on securities available-for-sale	0	0
Total other comprehensive income (loss), net of tax	0	0
Total comprehensive income attributable to Lennar	398,452	239,910
Total comprehensive loss attributable to noncontrolling interests	0	0
Reportable Legal Entities | Lennar Corporation | Homebuilding
Revenues:
Revenues	0	0
Cost and expenses:
Cost and expenses	0	0
Equity in earnings (loss) from unconsolidated entities	0	0
Other income (expense), net	(357)	(408)
Reportable Legal Entities | Lennar Corporation | Financial Services
Revenues:
Revenues	0	0
Cost and expenses:
Cost and expenses	0	0
Reportable Legal Entities | Lennar Corporation | Multifamily
Revenues:
Revenues	0	0
Cost and expenses:
Cost and expenses	0	0
Equity in earnings (loss) from unconsolidated entities	0	0
Reportable Legal Entities | Lennar Corporation | Lennar Other
Revenues:
Revenues	0	0
Cost and expenses:
Cost and expenses	0	0
Equity in earnings (loss) from unconsolidated entities	0	0
Other income (expense), net	0	0
Reportable Legal Entities | Guarantor Subsidiaries
Revenues:
Revenues	4,185,137	3,662,958
Cost and expenses:
Corporate general and administrative	1,572	549
Total costs and expenses	3,702,722	3,264,856
Earnings before income taxes	461,703	378,409
Benefit (provision) for income taxes	(25,837)	(93,839)
Equity in earnings from subsidiaries	24,705	4,773
Net earnings (including net loss attributable to noncontrolling interests)	460,571	289,343
Less: Net earnings (loss) attributable to noncontrolling interests	0	0
Net earnings attributable to Lennar	460,571	289,343
Other comprehensive income (loss), net of tax:
Net unrealized gain (loss) on securities available-for-sale	0	0
Total other comprehensive income (loss), net of tax	0	0
Total comprehensive income attributable to Lennar	460,571	289,343
Total comprehensive loss attributable to noncontrolling interests	0	0
Reportable Legal Entities | Guarantor Subsidiaries | Homebuilding
Revenues:
Revenues	4,156,143	3,614,041
Cost and expenses:
Cost and expenses	3,684,697	3,225,929
Equity in earnings (loss) from unconsolidated entities	(4,734)	(13,951)
Other income (expense), net	(11,048)	(2,396)
Reportable Legal Entities | Guarantor Subsidiaries | Financial Services
Revenues:
Revenues	28,994	48,917
Cost and expenses:
Cost and expenses	16,453	38,378
Reportable Legal Entities | Guarantor Subsidiaries | Multifamily
Revenues:
Revenues	0	0
Cost and expenses:
Cost and expenses	0	0
Equity in earnings (loss) from unconsolidated entities	0	0
Reportable Legal Entities | Guarantor Subsidiaries | Lennar Other
Revenues:
Revenues	0	0
Cost and expenses:
Cost and expenses	0	0
Equity in earnings (loss) from unconsolidated entities	(4,930)	(3,346)
Other income (expense), net	0	0
Reportable Legal Entities | Non-Guarantor Subsidiaries
Revenues:
Revenues	326,186	209,979
Cost and expenses:
Corporate general and administrative	0	0
Total costs and expenses	294,816	207,375
Earnings before income taxes	46,216	18,652
Benefit (provision) for income taxes	(12,820)	(5,298)
Equity in earnings from subsidiaries		0
Net earnings (including net loss attributable to noncontrolling interests)	33,396	13,354
Less: Net earnings (loss) attributable to noncontrolling interests	(7,229)	(486)
Net earnings attributable to Lennar	40,625	13,840
Other comprehensive income (loss), net of tax:
Net unrealized gain (loss) on securities available-for-sale	(46)	208
Total other comprehensive income (loss), net of tax	(46)	208
Total comprehensive income attributable to Lennar	40,579	14,048
Total comprehensive loss attributable to noncontrolling interests	(7,229)	(486)
Reportable Legal Entities | Non-Guarantor Subsidiaries | Homebuilding
Revenues:
Revenues	15,973	9,680
Cost and expenses:
Cost and expenses	17,343	12,307
Equity in earnings (loss) from unconsolidated entities	188	195
Other income (expense), net	1,682	857
Reportable Legal Entities | Non-Guarantor Subsidiaries | Financial Services
Revenues:
Revenues	175,653	99,249
Cost and expenses:
Cost and expenses	137,551	92,268
Reportable Legal Entities | Non-Guarantor Subsidiaries | Multifamily
Revenues:
Revenues	132,617	97,394
Cost and expenses:
Cost and expenses	137,348	101,178
Equity in earnings (loss) from unconsolidated entities	6,516	10,581
Reportable Legal Entities | Non-Guarantor Subsidiaries | Lennar Other
Revenues:
Revenues	1,943	3,656
Cost and expenses:
Cost and expenses	2,574	1,622
Equity in earnings (loss) from unconsolidated entities	5,049	11,676
Other income (expense), net	1,411	(7,261)
Consolidating Adjustments
Revenues:
Revenues	(5,986)	(4,855)
Cost and expenses:
Corporate general and administrative	1,265	1,265
Total costs and expenses	(5,629)	(4,443)
Earnings before income taxes	0	0
Benefit (provision) for income taxes	0	0
Equity in earnings from subsidiaries	(501,196)	(303,183)
Net earnings (including net loss attributable to noncontrolling interests)	(501,196)	(303,183)
Less: Net earnings (loss) attributable to noncontrolling interests	0	0
Net earnings attributable to Lennar	(501,196)	(303,183)
Other comprehensive income (loss), net of tax:
Net unrealized gain (loss) on securities available-for-sale	0	0
Total other comprehensive income (loss), net of tax	0	0
Total comprehensive income attributable to Lennar	(501,196)	(303,183)
Total comprehensive loss attributable to noncontrolling interests	0	0
Consolidating Adjustments | Homebuilding
Revenues:
Revenues	0	0
Cost and expenses:
Cost and expenses	(4,234)	599
Equity in earnings (loss) from unconsolidated entities	0	0
Other income (expense), net	357	412
Consolidating Adjustments | Financial Services
Revenues:
Revenues	(5,986)	(4,855)
Cost and expenses:
Cost and expenses	(2,660)	(6,307)
Consolidating Adjustments | Multifamily
Revenues:
Revenues	0	0
Cost and expenses:
Cost and expenses	0	0
Equity in earnings (loss) from unconsolidated entities	0	0
Consolidating Adjustments | Lennar Other
Revenues:
Revenues	0	0
Cost and expenses:
Cost and expenses	0	0
Equity in earnings (loss) from unconsolidated entities	0	0
Other income (expense), net	$ 0	$ 0