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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) | May 31, 2024 | May 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 | 6
Maximum | Average selling price (1) |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Unobservable inputs | 282,000 | 663,000
Maximum | Absorption rate per quarter (homes) |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Unobservable inputs | 15 | 26

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- 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

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

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

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

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

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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