Financial Instruments (Schedule Of Gains And Losses Of Financial Instruments) (Details) - USD ($) $ in Thousands	3 Months Ended
Feb. 29, 2016	Feb. 28, 2015
Schedule of Trading Securities and Other Trading Assets [Line Items]
Net unrealized gain (loss) on securities available-for-sale	$ (437)	$ 200
Loans Held-For-Sale [Member] \| Lennar Financial Services [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Loans held-for-sale	513	(7,300)
Mortgage Loan Commitments [Member] \| Lennar Financial Services [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Mortgage loan commitments	6,053	6,279
Forward Contracts [Member] \| Lennar Financial Services [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Derivative instruments	(10,168)	7,521
Interest Rate Swaps and Swap Futures [Member] \| Liability [Member] \| Rialto [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Derivative instruments	(5,006)	(33)
Credit Default Swap [Member] \| Assets [Member] \| Rialto [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Derivative instruments	$ 3,431	$ (492)

Unrealized Gain (Loss) on Mortgage Loan Commitments

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- Definition

Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e637-108580

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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

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of investments, not including unrealized gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, held at each balance sheet date and included in earnings for the period.

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