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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)	Aug. 31, 2024	Aug. 31, 2023
Discount rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs	0.20	0.20
Minimum | Average selling price (1)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs	178,000	371,000
Minimum | Absorption rate per quarter (homes)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs	10	3
Maximum | Average selling price (1)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs	282,000	850,000
Maximum | Absorption rate per quarter (homes)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs	15	26

X

- Definition

Inventory, Measurement Input

+ References

No definition available.

+ Details

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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

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Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:
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X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
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X

- Details

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Namespace Prefix:
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Balance Type:
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X

- Details

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

- Details

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Namespace Prefix:
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