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Homebuilding Senior Notes and Other Debts Payable (Letter of Credit Facilities) (Details) - USD ($) $ in Thousands	Aug. 31, 2021	Nov. 30, 2020
Performance letters of credit
Line of Credit Facility [Line Items]
Letters of credit	$ 874,820	$ 752,096
Surety bonds
Line of Credit Facility [Line Items]
Letters of credit	3,465,134	3,087,711
Anticipated future costs primarily for site improvements related to performance surety bonds
Line of Credit Facility [Line Items]
Letters of credit	$ 1,595,800	$ 1,584,642

X

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- 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.

+ Details

Name:	us-gaap_LineOfCreditFacilityLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_CreditFacilityAxis=len_PerformanceLettersOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_SuretyBondMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditFacilityAxis=len_AnticipatedFutureCostsRelatedtoSiteImprovementsRelatedtoPerformanceSuretyBondsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: