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Variable Interest Entities (Details) - USD ($) | Aug. 31, 2015 | Nov. 30, 2014
--- | --- | ---
Variable Interest Entity [Line Items] |  |
Cash Deposits | $ 42,771,000 | $ 33,059,000
Aggregate Purchase Price | 941,596,000 | 958,470,000
Pre-acquisition costs related to land option contracts and other similar contracts | 60,000,000 | 48,000,000
Outstanding letters of credit | 0 | 100,000
Increase in inventories and accrued expenses and other liabilities | 89,400,000 | 3,100,000
Variable Interest Entity, Not Primary Beneficiary [Member] |  |
Variable Interest Entity [Line Items] |  |
Cash Deposits | 21,907,000 | 10,633,000
Aggregate Purchase Price | 472,169,000 | 520,628,000
Non-VIE Other land option contracts and other similar contracts [Member] |  |
Variable Interest Entity [Line Items] |  |
Cash Deposits | 20,864,000 | 22,426,000
Aggregate Purchase Price | $ 469,427,000 | $ 437,842,000

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- Definition Acquisition costs related to land option contracts and other similar contracts. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Aggregate purchase price associated with land option and other similar contracts. + References No definition available. + Details
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Namespace Prefix: | kbh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Cash deposits on land option and other similar contracts. + References No definition available. + Details
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- Definition Increase in inventories and accrued expenses and other liabilities due to land option and other similar contracts. + References No definition available. + Details
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- Definition Outstanding letters of credit in lieu of cash deposits under certain land option or other similar contracts. + References No definition available. + Details
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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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- Details
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- Details
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