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Fair Value Disclosures (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Nov. 30, 2013 | Nov. 30, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Post Impairment Fair Value | $ 1,100 | $ 39,900
Level 3 | Fair Value, Measurements, Nonrecurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Post Impairment Fair Value | $ 1,143 | $ 39,851

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- Definition Post impairment fair value of land parcels or communities. + References No definition available. + Details
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Namespace Prefix: | kbh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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