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Financial Instruments and Fair Value Disclosures - (Unobservable Inputs Used in Discounted Cash Flow Model to Determine the Fair Value of Communities) (Details)	Feb. 29, 2024
Discount rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs	0.20
Minimum | Average selling price (1)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs	178,000
Minimum | Absorption rate per quarter (homes)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs	10
Maximum | Average selling price (1)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs	197,000,000
Maximum | Absorption rate per quarter (homes)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs	13

X

- Definition

Inventory, Measurement Input

+ References

No definition available.

+ Details

Name:	len_InventoryMeasurementInput
Namespace Prefix:	len_
Data Type:	xbrli:decimalItemType
Balance Type:	na
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_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDiscountRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=len_MeasurementInputAverageSellingPriceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=len_MeasurementInputAbsorptionRatePerQuarterMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: