Lennar Financial Services Segment (Schedule Of Loan Origination Liabilities) (Details) - Lennar Financial Services - Loss origination liability - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Aug. 31, 2017	Aug. 31, 2016	Aug. 31, 2017	Aug. 31, 2016
Loss Contingency Accrual [Roll Forward]
Loan origination liabilities, beginning of period	$ 25,912	$ 20,994	$ 24,905	$ 19,492
Provision for losses	1,056	1,288	3,000	3,186
Adjustments to pre-existing provisions for losses from changes in estimates	(4,440)	1,224	(4,440)	1,224
Payments/settlements	(651)	(17)	(1,588)	(413)
Loan origination liabilities, end of period	$ 21,877	$ 23,489	$ 21,877	$ 23,489

Loss Contingency Accrual, Increase (Decrease) for Preexisting Provisions

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- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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- Definition

Amount of cash outflow reducing loss contingency liability.

+ References

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Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges.

+ References

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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