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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, 2023	Aug. 31, 2022
Average selling price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs		750,000,000
Absorption rate per quarter (homes)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs		2
Discount rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs	0.20	0.20
Minimum | Average selling price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs	371,000
Minimum | Absorption rate per quarter (homes)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs	3
Maximum | Average selling price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs	850,000,000
Maximum | Absorption rate per quarter (homes)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs	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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Data Type:	xbrli:stringItemType
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X

- Details

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X

- Details

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X

- Details

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X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
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X

- Details

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