Segment Information (Narratives) (Details)	3 Months Ended
Feb. 28, 2023 segment
Schedule of Equity Method Investments [Line Items]
Number of reportable segments	5
KBHS, LLC \| Financial services
Schedule of Equity Method Investments [Line Items]
Ownership interest in joint venture	50.00%
KBHS, LLC \| GR Alliance, LLC
Schedule of Equity Method Investments [Line Items]
Ownership interest in joint venture	50.00%
Homebuilding
Schedule of Equity Method Investments [Line Items]
Number of reportable segments	4
Financial services
Schedule of Equity Method Investments [Line Items]
Number of reportable segments	1

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8672-108599

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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.

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