Financial Instruments and Fair Value Disclosures - (Fair Value Measured On Recurring Basis) (Details) - USD ($) $ in Thousands	Aug. 31, 2019	Nov. 30, 2018
Lennar Other \| Fair Value, Measurements, Recurring \| RMF loans held-for-sale
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Aggregate principal balance	$ 171,500	$ 61,000
Aggregate fair value of loans (below) in excess of principal balance	7,200	700
Lennar Other \| Fair Value, Measurements, Recurring \| Level 3
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Loans held for sale	178,704	61,691
Financial Services
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Investments available-for-sale	3,597	4,161
Financial Services \| Mortgage loan commitments
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Financial asset	25,900	16,400
Financial Services \| Fair Value, Measurements, Recurring \| RMF loans held-for-sale
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Aggregate principal balance	1,000,000	1,100,000
Aggregate fair value of loans (below) in excess of principal balance	37,700	37,300
Financial Services \| Fair Value, Measurements, Recurring \| Level 1
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Investments available-for-sale	3,597	4,161
Financial Services \| Fair Value, Measurements, Recurring \| Level 2
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Loans held for sale	1,049,888	1,152,198
Financial Services \| Fair Value, Measurements, Recurring \| Level 3
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Mortgage servicing rights	23,072	37,206
Financial Services \| Fair Value, Measurements, Recurring \| Mortgage loan commitments \| Level 2
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Financial asset	25,871	16,373
Financial Services \| Fair Value, Measurements, Recurring \| Forward contracts \| Level 2
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items]
Forward contracts	$ (9,626)	$ (10,360)

Fair Value, Option, Principal Amount Outstanding, Loans and Long-Term Receivables

No definition available.

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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (b)
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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
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-Section 50
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- Definition

Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

+ References

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-Name Accounting Standards Codification
-Topic 815
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

This item represents the difference between the aggregate fair value and the aggregate unpaid principal balance of loans and long-term receivables (other than securities categorized as trading, available-for-sale or held-to-maturity) that have contractual principal amounts and for which the fair value option has been elected.

+ References

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-Publisher FASB
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-Topic 825
-SubTopic 10
-Section 50
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- Definition

Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

+ References

No definition available.

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- Definition

Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 45
-Paragraph 2
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