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Stockholders' Equity (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	May 31, 2012	Feb. 29, 2012	May 31, 2011	Feb. 28, 2011	May 31, 2012	May 31, 2011
Stockholders' Equity (Textual) [Abstract]
Number of common stock, authorized, approved under a board approved stock repurchase program	4				4
Dividend paid in each quarter	$ 0.0250	$ 0.0625	$ 0.0625	$ 0.0625	$ 0.0875	$ 0.1250

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- Details

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Namespace Prefix:	kbh_
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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770

+ Details

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- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

+ Details

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