XML 70 R59.htm IDEA: XBRL DOCUMENT
v3.21.2

Financial Instruments and Fair Value Disclosures - (Communities with Indicators for Impairment) (Details) $ in Thousands | 9 Months Ended
--- | ---
Aug. 31, 2021 USD ($) community | Aug. 31, 2020 USD ($) community
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items] |  |
Active communities | 1,192 | 1,194
Number of Communities with potential indicator of impairment | 8 | 28
Number of communities with valuation adjustments | 1 | 14
Valuation adjustments | $ | $ 11,849 | $ 40,364
Level 3 |  |
Fair Value, Assets and Liabilities Measured on a Recuring and Nonrecurring Basis [Line Items] |  |
Fair value of communities with valuation adjustments | $ | $ 17,117 | $ 76,115

X
- Definition Inventory, Operative Builders, Fair Value Measurement Adjustments, Before Impairment + References No definition available. + Details
Name: | len_InventoryOperativeBuildersFairValueMeasurementAdjustmentsBeforeImpairment
Namespace Prefix: | len_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of Active Communities + References No definition available. + Details
Name: | len_NumberofActiveCommunities
Namespace Prefix: | len_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of Communities Assessed for Impairment + References No definition available. + Details
Name: | len_NumberofCommunitiesAssessedforImpairment
Namespace Prefix: | len_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of Communities Impaired + References No definition available. + Details
Name: | len_NumberofCommunitiesImpaired
Namespace Prefix: | len_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=116847112&loc=d3e4542-108314 + Details
Name: | us-gaap_InventoryWriteDown
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |