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Financial Services (Details) (USD $) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Nov. 30, 2014 | Aug. 31, 2014 | May 31, 2014 | Feb. 28, 2014 | Nov. 30, 2013 | Aug. 31, 2013 | May 31, 2013 | Feb. 28, 2013 | Nov. 30, 2014 | Nov. 30, 2013 | Nov. 30, 2012 | Nov. 30, 2011
Financial services: |  |  |  |  |  |  |  |  |  |  |  |
Insurance commissions |  |  |  |  |  |  |  |  | $ 6,566,000 us-gaap_InsuranceCommissionsAndFees | $ 7,177,000 us-gaap_InsuranceCommissionsAndFees | $ 7,140,000 us-gaap_InsuranceCommissionsAndFees |
Title services |  |  |  |  |  |  |  |  | 3,593,000 kbh_TitleServices | 3,172,000 kbh_TitleServices | 2,362,000 kbh_TitleServices |
Marketing services fees |  |  |  |  |  |  |  |  | 1,147,000 us-gaap_RevenueOtherFinancialServices | 1,800,000 us-gaap_RevenueOtherFinancialServices | 2,175,000 us-gaap_RevenueOtherFinancialServices |
Interest income |  |  |  |  |  |  |  |  | 0 us-gaap_InterestIncomeOperating | 3,000 us-gaap_InterestIncomeOperating | 6,000 us-gaap_InterestIncomeOperating |
Total |  |  |  |  |  |  |  |  | 11,306,000 us-gaap_FinancialServicesRevenue | 12,152,000 us-gaap_FinancialServicesRevenue | 11,683,000 us-gaap_FinancialServicesRevenue |
Expenses |  |  |  |  |  |  |  |  |  |  |  |
Expenses |  |  |  |  |  |  |  |  | (3,446,000)us-gaap_FinancialServicesCosts | (3,042,000)us-gaap_FinancialServicesCosts | (2,991,000)us-gaap_FinancialServicesCosts |
Operating income (loss) |  |  |  |  |  |  |  |  | 115,969,000 us-gaap_OperatingIncomeLoss | 92,084,000 us-gaap_OperatingIncomeLoss | (20,256,000)us-gaap_OperatingIncomeLoss |
Income (Loss) from Equity Method Investments |  |  |  |  |  |  |  |  | 1,427,000 us-gaap_IncomeLossFromEquityMethodInvestments | (933,000)us-gaap_IncomeLossFromEquityMethodInvestments | 1,797,000 us-gaap_IncomeLossFromEquityMethodInvestments |
Pretax income (loss) | 28,601,000 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic | 28,661,000 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic | 26,924,000 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic | 10,763,000 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic | 28,316,000 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic | 26,578,000 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic | (4,173,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic | (12,358,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic | 94,949,000 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic | 38,363,000 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic | (79,053,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic |
Assets |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents | 358,768,000 us-gaap_CashAndCashEquivalentsAtCarryingValue |  |  |  | 532,523,000 us-gaap_CashAndCashEquivalentsAtCarryingValue |  |  |  | 358,768,000 us-gaap_CashAndCashEquivalentsAtCarryingValue | 532,523,000 us-gaap_CashAndCashEquivalentsAtCarryingValue | 525,688,000 us-gaap_CashAndCashEquivalentsAtCarryingValue | 418,074,000 us-gaap_CashAndCashEquivalentsAtCarryingValue
Receivables | 125,488,000 us-gaap_AccountsAndNotesReceivableNet |  |  |  | 75,749,000 us-gaap_AccountsAndNotesReceivableNet |  |  |  | 125,488,000 us-gaap_AccountsAndNotesReceivableNet | 75,749,000 us-gaap_AccountsAndNotesReceivableNet |  |
Investments in unconsolidated joint ventures | 79,441,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures |  |  |  | 130,192,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures |  |  |  | 79,441,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures | 130,192,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures |  |
Other assets | 114,915,000 us-gaap_OtherAssets |  |  |  | 107,076,000 us-gaap_OtherAssets |  |  |  | 114,915,000 us-gaap_OtherAssets | 107,076,000 us-gaap_OtherAssets |  |
Total assets | 4,757,550,000 us-gaap_Assets |  |  |  | 3,193,635,000 us-gaap_Assets |  |  |  | 4,757,550,000 us-gaap_Assets | 3,193,635,000 us-gaap_Assets |  |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |
Accounts payable and accrued expenses | 582,598,000 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent |  |  |  | 504,458,000 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent |  |  |  | 582,598,000 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent | 504,458,000 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent |  |
Total liabilities | 2,517,000 us-gaap_FinancialServicesLiabilities |  |  |  | 2,593,000 us-gaap_FinancialServicesLiabilities |  |  |  | 2,517,000 us-gaap_FinancialServicesLiabilities | 2,593,000 us-gaap_FinancialServicesLiabilities |  |
Financial services (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Realized Gain (Loss) on Disposal |  |  |  |  |  |  |  |  |  | 1,100,000 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal | 2,100,000 us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal |
Financial services [Member] |  |  |  |  |  |  |  |  |  |  |  |
Expenses |  |  |  |  |  |  |  |  |  |  |  |
Operating income (loss) |  |  |  |  |  |  |  |  | 7,860,000 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember | 9,110,000 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember | 8,692,000 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember |
Income (Loss) from Equity Method Investments |  |  |  |  |  |  |  |  | 686,000 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember | 1,074,000 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember | 2,191,000 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember |
Pretax income (loss) |  |  |  |  |  |  |  |  | 8,546,000 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember | 10,184,000 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember | 10,883,000 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember |
Assets |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents | 2,402,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember |  |  |  | 2,428,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember |  |  |  | 2,402,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember | 2,428,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember | 923,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember |
Receivables | 1,738,000 us-gaap_AccountsAndNotesReceivableNet / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember |  |  |  | 2,084,000 us-gaap_AccountsAndNotesReceivableNet / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember |  |  |  | 1,738,000 us-gaap_AccountsAndNotesReceivableNet / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember | 2,084,000 us-gaap_AccountsAndNotesReceivableNet / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember |  |
Investments in unconsolidated joint ventures | 6,149,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember |  |  |  | 5,490,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember |  |  |  | 6,149,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember | 5,490,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember |  |
Other assets | 197,000 us-gaap_OtherAssets / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember |  |  |  | 38,000 us-gaap_OtherAssets / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember |  |  |  | 197,000 us-gaap_OtherAssets / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember | 38,000 us-gaap_OtherAssets / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember |  |
Total assets | 10,486,000 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember |  |  |  | 10,040,000 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember |  |  |  | 10,486,000 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember | 10,040,000 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember |  |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |
Accounts payable and accrued expenses | 2,517,000 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember |  |  |  | 2,593,000 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember |  |  |  | 2,517,000 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember | 2,593,000 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent / us-gaap_StatementBusinessSegmentsAxis = kbh_FinancialServicesMember |  |
Home Community Mortgage LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
General Partners' Contributed Capital |  |  |  |  | $ 5,000,000 us-gaap_GeneralPartnersContributedCapital / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = kbh_HomeCommunityMortgageLLCMember |  |  |  |  | $ 5,000,000 us-gaap_GeneralPartnersContributedCapital / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = kbh_HomeCommunityMortgageLLCMember |  |

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3044-108585 + Details
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- Definition For entities that provide full or partial financing and servicing for customers supplementary to its major operations (such as a manufacturer or a homebuilder providing and servicing loans to buyers), represents the liabilities associated with such activities, including accounts payable and accrued liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.15) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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