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Operating and Reporting Segments (Fair Value Inputs for Commercial Mortgage-Backed Securities) (Details) - Commercial Mortgage-Backed Securities - Financial Services	12 Months Ended
	Nov. 30, 2021
Minimum
Segment Reporting Information [Line Items]
Discount rate	6.00%
Coupon rate	2.00%
Maximum
Segment Reporting Information [Line Items]
Discount rate	84.00%
Coupon rate	5.30%

X

- Definition

Held to Maturity Securities, Coupon Rate

+ References

No definition available.

+ Details

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Namespace Prefix:	len_
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Balance Type:	na
Period Type:	duration

X

- Definition

Held to Maturity Securities, Discount Rate as a Percent of Face Value

+ References

No definition available.

+ Details

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Namespace Prefix:	len_
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Balance Type:	na
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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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X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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X

- Details

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