XML 1113 R69.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Notes Payable (Narrative) (Details) (USD $) | 12 Months Ended | 0 Months Ended | 3 Months Ended | 0 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Nov. 30, 2014 | Nov. 30, 2013 | Nov. 30, 2012 | Oct. 29, 2013 | Jan. 29, 2013 | Jul. 31, 2012 | Feb. 07, 2012 | Nov. 30, 2013 | Aug. 31, 2012 | Feb. 29, 2012 | Mar. 25, 2014 | Mar. 12, 2013 | Jul. 30, 2009 | Apr. 03, 2006
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ratio of Consolidated EBITDA to Consolidated Interest Incurred | 1.40 kbh_RatioofConsolidatedEBITDAtoConsolidatedInterestIncurred |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Significant Subsidiary Threshold, Percent | 5.00%kbh_LineofCreditFacilitySignificantSubsidiaryThresholdPercent |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Non Guarantor Subsidiary Threshold, Percent | 10.00%kbh_LineofCreditFacilityNonGuarantorSubsidiaryThresholdPercent |  |  |  |  |  |  |  |  |  |  |  |  |
Incremental Common Shares Attributable to Conversion of Debt Securities | 8,402,000 us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities | 7,044,000 us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities | 0 us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities |  |  |  |  |  |  |  |  |  |  |
Letters of Credit Outstanding, Amount | $ 26,700,000 us-gaap_LettersOfCreditOutstandingAmount | $ 41,500,000 us-gaap_LettersOfCreditOutstandingAmount |  |  |  |  |  | $ 41,500,000 us-gaap_LettersOfCreditOutstandingAmount |  |  |  |  |  |
Gain (loss) on early extinguishment of debt | 0 us-gaap_GainsLossesOnExtinguishmentOfDebt | 10,448,000 us-gaap_GainsLossesOnExtinguishmentOfDebt | 10,278,000 us-gaap_GainsLossesOnExtinguishmentOfDebt |  |  |  |  |  |  |  |  |  |  |
Primarily inventories carrying value | 133,800,000 us-gaap_PledgedAssetsNotSeparatelyReportedRealEstate |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Senior Long-term Debt | 400,000,000 us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt | 680,000,000 us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt | 694,831,000 us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt |  |  |  |  |  |  |  |  |  |  |
Long-term Debt, Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2013 | 222,200,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths |  |  |  |  |  |  |  |  |  |  |  |  |
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2014 | 16,000,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo |  |  |  |  |  |  |  |  |  |  |  |  |
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2015 | 265,000,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree |  |  |  |  |  |  |  |  |  |  |  |  |
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2016 | 300,000,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour |  |  |  |  |  |  |  |  |  |  |  |  |
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due 2017 | 630,000,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive |  |  |  |  |  |  |  |  |  |  |  |  |
Principal payments on senior notes, mortgages and land contracts due to land sellers and other loans due thereafter | 1,150,000,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive |  |  |  |  |  |  |  |  |  |  |  |  |
Senior notes due December 15, 2021 at 7.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Early Repayment of Senior Debt |  |  |  | 225,400,000 us-gaap_EarlyRepaymentOfSeniorDebt / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandTwentyOneAtSevenPointZeroZeroPercentMember |  |  |  |  |  |  |  |  |  |
Convertible senior notes due February 1, 2019 at 1.375% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior notes, rate | 1.375%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_ConvertibleSeniorNotesDueTwoThousandNineteenAtOnePointThreeSevenFivePercentMemberMember | 1.375%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_ConvertibleSeniorNotesDueTwoThousandNineteenAtOnePointThreeSevenFivePercentMemberMember |  |  | 1.375%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_ConvertibleSeniorNotesDueTwoThousandNineteenAtOnePointThreeSevenFivePercentMemberMember |  |  | 1.375%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_ConvertibleSeniorNotesDueTwoThousandNineteenAtOnePointThreeSevenFivePercentMemberMember |  |  |  |  |  |
Convertible Notes Payable [Member] | Convertible senior notes due February 1, 2019 at 1.375% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Incremental Common Shares Attributable to Conversion of Debt Securities |  |  |  |  | 8,401,831 us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities / us-gaap_DebtInstrumentAxis = kbh_ConvertibleSeniorNotesDueTwoThousandNineteenAtOnePointThreeSevenFivePercentMemberMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |  |
Percentage of Principal Amount for Purchase of Notes if Fundamental Change | 100.00%kbh_PercentageOfPrincipalAmountForPurchaseOfNotesIfFundamentalChange / us-gaap_DebtInstrumentAxis = kbh_ConvertibleSeniorNotesDueTwoThousandNineteenAtOnePointThreeSevenFivePercentMemberMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |  |  |  |  |  |
Senior notes |  |  |  |  | 230,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = kbh_ConvertibleSeniorNotesDueTwoThousandNineteenAtOnePointThreeSevenFivePercentMemberMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |  |
Senior notes, rate | 1.375%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_ConvertibleSeniorNotesDueTwoThousandNineteenAtOnePointThreeSevenFivePercentMemberMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember | 1.375%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_ConvertibleSeniorNotesDueTwoThousandNineteenAtOnePointThreeSevenFivePercentMemberMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  | 1.375%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_ConvertibleSeniorNotesDueTwoThousandNineteenAtOnePointThreeSevenFivePercentMemberMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |
Percentage of principal amount in relation to issued value of senior notes |  |  |  |  | 100.00%kbh_PercentageOfPrincipalAmountInRelationToIssuedValueOfSeniorNotes / us-gaap_DebtInstrumentAxis = kbh_ConvertibleSeniorNotesDueTwoThousandNineteenAtOnePointThreeSevenFivePercentMemberMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |  |
Debt Conversion, Converted Instrument, Shares Issued |  |  |  |  | 36.5297 us-gaap_DebtConversionConvertedInstrumentSharesIssued1 / us-gaap_DebtInstrumentAxis = kbh_ConvertibleSeniorNotesDueTwoThousandNineteenAtOnePointThreeSevenFivePercentMemberMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |  |
Debt Instrument, Convertible, Conversion Price |  |  |  |  | $ 27.37 us-gaap_DebtInstrumentConvertibleConversionPrice1 / us-gaap_DebtInstrumentAxis = kbh_ConvertibleSeniorNotesDueTwoThousandNineteenAtOnePointThreeSevenFivePercentMemberMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |  |
Conversion Price Premium |  |  |  |  | 47.00%kbh_ConversionPricePremium / us-gaap_DebtInstrumentAxis = kbh_ConvertibleSeniorNotesDueTwoThousandNineteenAtOnePointThreeSevenFivePercentMemberMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |  |
Share Price |  |  |  |  | $ 18.62 us-gaap_SharePrice / us-gaap_DebtInstrumentAxis = kbh_ConvertibleSeniorNotesDueTwoThousandNineteenAtOnePointThreeSevenFivePercentMemberMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |  |
Proceeds from Convertible Debt |  |  |  |  | 222,700,000 us-gaap_ProceedsFromConvertibleDebt / us-gaap_DebtInstrumentAxis = kbh_ConvertibleSeniorNotesDueTwoThousandNineteenAtOnePointThreeSevenFivePercentMemberMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |  |  |  |  |  |  |  |
Mortgages and Land Contracts Due to Land Sellers and Other Loans [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior notes, rate |  | 700.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = kbh_MortgagesAndLandContractsDueToLandSellersAndOtherLoansMember |  |  |  |  |  | 700.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = kbh_MortgagesAndLandContractsDueToLandSellersAndOtherLoansMember |  |  |  |  |  |
Senior Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on early extinguishment of debt |  |  |  |  |  |  |  | 10,400,000 us-gaap_GainsLossesOnExtinguishmentOfDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember | 8,300,000 us-gaap_GainsLossesOnExtinguishmentOfDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember | 2,000,000 us-gaap_GainsLossesOnExtinguishmentOfDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |
Extinguishment of Debt, Amount |  |  |  |  |  | 244,900,000 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember | 340,000,000 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |
Early Repayment of Senior Debt |  |  |  |  |  | 252,200,000 us-gaap_EarlyRepaymentOfSeniorDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember | 340,500,000 us-gaap_EarlyRepaymentOfSeniorDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |
Percentage of principal amount for purchase of notes if change in control | 101.00%kbh_PercentageofPrincipalAmountforPurchaseofNotesifChangeinControl / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes [Member] | Senior notes due May 15, 2019 at 4.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior notes |  |  |  |  |  |  |  |  |  |  | 400,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandNineteenatFourPointSevenFivePercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |
Senior notes, rate | 4.75%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandNineteenatFourPointSevenFivePercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |  | 4.75%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandNineteenatFourPointSevenFivePercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |
Percentage of principal amount in relation to issued value of senior notes |  |  |  |  |  |  |  |  |  |  | 100.00%kbh_PercentageOfPrincipalAmountInRelationToIssuedValueOfSeniorNotes / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandNineteenatFourPointSevenFivePercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |
Senior Notes [Member] | Senior notes due June 15, 2015 at 6 1/4% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior notes, rate | 6.25%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandFifteenAtSixPointTwoFivePercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember | 6.25%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandFifteenAtSixPointTwoFivePercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  | 6.25%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandFifteenAtSixPointTwoFivePercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |
Senior Notes [Member] | Senior notes due September 15, 2022 at 7.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior notes |  |  |  |  |  | 350,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandTwentyTwoAtSevenPointFiveZeroPercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |
Senior notes, rate | 7.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandTwentyTwoAtSevenPointFiveZeroPercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember | 7.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandTwentyTwoAtSevenPointFiveZeroPercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  | 7.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandTwentyTwoAtSevenPointFiveZeroPercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  | 7.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandTwentyTwoAtSevenPointFiveZeroPercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |
Percentage of principal amount in relation to issued value of senior notes |  |  |  |  |  | 100.00%kbh_PercentageOfPrincipalAmountInRelationToIssuedValueOfSeniorNotes / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandTwentyTwoAtSevenPointFiveZeroPercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |
Senior Notes [Member] | Senior notes due December 15, 2021 at 7.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior notes |  |  |  | 450,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandTwentyOneAtSevenPointZeroZeroPercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |  |
Senior notes, rate | 7.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandTwentyOneAtSevenPointZeroZeroPercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember | 7.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandTwentyOneAtSevenPointZeroZeroPercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  | 7.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandTwentyOneAtSevenPointZeroZeroPercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  | 7.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandTwentyOneAtSevenPointZeroZeroPercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |
Percentage of principal amount in relation to issued value of senior notes |  |  |  | 100.00%kbh_PercentageOfPrincipalAmountInRelationToIssuedValueOfSeniorNotes / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandTwentyOneAtSevenPointZeroZeroPercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |  |
Senior Notes [Member] | Senior Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extinguishment of Debt, Amount |  |  |  | 215,100,000 us-gaap_ExtinguishmentOfDebtAmount / us-gaap_DebtInstrumentAxis = us-gaap_SeniorNotesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |  |
Senior Notes [Member] | Senior notes due September 15, 2017 at 9.10% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior notes |  |  |  |  |  |  |  |  |  |  |  |  | 265,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandSeventeenAtNinePointOnePercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |
Senior notes, rate | 9.10%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandSeventeenAtNinePointOnePercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember | 9.10%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandSeventeenAtNinePointOnePercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  | 9.10%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandSeventeenAtNinePointOnePercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |
Senior Notes [Member] | Senior notes due June 15, 2018 at 7 1/4% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior notes |  |  |  |  |  |  |  |  |  |  |  |  |  | 300,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandEighteenAtSevenPointTwoFivePercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember
Senior notes, rate | 7.25%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandEighteenAtSevenPointTwoFivePercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember | 7.25%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandEighteenAtSevenPointTwoFivePercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  | 7.25%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandEighteenAtSevenPointTwoFivePercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |
Senior Notes [Member] | Senior notes due March 15, 2020 at 8.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior notes |  |  |  |  |  |  | 350,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandTwentyAtEightPointZeroZeroPercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |
Senior notes, rate | 8.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandTwentyAtEightPointZeroZeroPercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember | 8.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandTwentyAtEightPointZeroZeroPercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  | 8.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandTwentyAtEightPointZeroZeroPercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember | 8.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandTwentyAtEightPointZeroZeroPercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |
Percentage of principal amount in relation to issued value of senior notes |  |  |  |  |  |  | 98.523%kbh_PercentageOfPrincipalAmountInRelationToIssuedValueOfSeniorNotes / us-gaap_DebtInstrumentAxis = kbh_SeniorNotesDueTwoThousandTwentyAtEightPointZeroZeroPercentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |
Senior notes due May 15, 2019 at 4.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Senior Long-term Debt |  |  |  |  |  |  |  |  |  |  | 394,600,000 us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt / us-gaap_LongtermDebtTypeAxis = kbh_SeniorNotesDueTwoThousandNineteenatFourPointSevenFivePercentMember |  |  |
Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Expiration Date |  |  |  |  |  |  |  |  |  |  |  | Mar. 12, 2016 |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  |  |  | 300,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |  |
Line of Credit Facility, Remaining Borrowing Capacity | 200,000,000 us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Non Guarantor Subsidiary Threshold, Percent | 10.00%kbh_LineofCreditFacilityNonGuarantorSubsidiaryThresholdPercent / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |  |  |  |  |  |  |  |  |  |  |  |  |
Letter of Credit [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  |  |  | 100,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_LetterOfCreditMember |  |
Line of Credit Facility, Amount Outstanding | 0 us-gaap_LineOfCreditFacilityAmountOutstanding / us-gaap_CreditFacilityAxis = us-gaap_LetterOfCreditMember |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Remaining Borrowing Capacity | $ 100,000,000 us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_LetterOfCreditMember |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum | Mortgages and Land Contracts Due to Land Sellers and Other Loans [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior notes, rate | 500.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = kbh_MortgagesAndLandContractsDueToLandSellersAndOtherLoansMember / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum | Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  |  |  |  |  |  |  |  |  |  |  | 0.50%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MinimumMember |  |
Maximum | Mortgages and Land Contracts Due to Land Sellers and Other Loans [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior notes, rate | 700.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = kbh_MortgagesAndLandContractsDueToLandSellersAndOtherLoansMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  |  |  |  |  |  |  |  |  |  |  | 0.75%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |

X
- Definition Represents the percentage of debt instrument conversion premium based on the closing price of the entity's common stock on date debt was issued. + References No definition available. + Details
Name: | kbh_ConversionPricePremium
Namespace Prefix: | kbh_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line of Credit Facility, Non Guarantor Subsidiary Threshold, Percent + References No definition available. + Details
Name: | kbh_LineofCreditFacilityNonGuarantorSubsidiaryThresholdPercent
Namespace Prefix: | kbh_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line of Credit Facility, Significant Subsidiary Threshold, Percent + References No definition available. + Details
Name: | kbh_LineofCreditFacilitySignificantSubsidiaryThresholdPercent
Namespace Prefix: | kbh_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of Principal Amount for Purchase of Notes if Change in Control + References No definition available. + Details
Name: | kbh_PercentageofPrincipalAmountforPurchaseofNotesifChangeinControl
Namespace Prefix: | kbh_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of principal amount for purchase of notes if fundamental change. + References No definition available. + Details
Name: | kbh_PercentageOfPrincipalAmountForPurchaseOfNotesIfFundamentalChange
Namespace Prefix: | kbh_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of principal amount in relation to issued value of senior notes. + References No definition available. + Details
Name: | kbh_PercentageOfPrincipalAmountInRelationToIssuedValueOfSeniorNotes
Namespace Prefix: | kbh_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Ratio of Consolidated EBITDA to Consolidated Interest Incurred + References No definition available. + Details
Name: | kbh_RatioofConsolidatedEBITDAtoConsolidatedInterestIncurred
Namespace Prefix: | kbh_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
Name: | us-gaap_DebtConversionConvertedInstrumentSharesIssued1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The price per share of the conversion feature embedded in the debt instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870 + Details
Name: | us-gaap_DebtInstrumentConvertibleConversionPrice1
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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

X
- Definition The cash outflow for the extinguishment of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, before its maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
Name: | us-gaap_EarlyRepaymentOfSeniorDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Gross amount of debt extinguished. + References No definition available. + Details
Name: | us-gaap_ExtinguishmentOfDebtAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6850294&loc=d3e12317-112629 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6850294&loc=d3e12355-112629 + Details
Name: | us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible debt securities using the if-converted method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 40 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1930-109256 + Details
Name: | us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityAmountOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Date the credit facility terminates, in CCYY-MM-DD format. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityExpirationDate1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
Name: | us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
Name: | us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
Name: | us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
Name: | us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
Name: | us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
Name: | us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
Name: | us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The carrying amount, as of the date of the latest financial statement presented, of real estate owned but transferred to serve as collateral for the payment of the related debt obligation, primarily a secured borrowing or repurchase agreement, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (b)(1)(i) -URI http://asc.fasb.org/extlink&oid=7523297&loc=SL6224234-111729 + Details
Name: | us-gaap_PledgedAssetsNotSeparatelyReportedRealEstate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromConvertibleDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Price of a single share of a number of saleable stocks of a company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
Name: | us-gaap_SharePrice
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=kbh_ConvertibleSeniorNotesDueTwoThousandNineteenAtOnePointThreeSevenFivePercentMemberMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=kbh_SeniorNotesDueTwoThousandTwentyOneAtSevenPointZeroZeroPercentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=kbh_MortgagesAndLandContractsDueToLandSellersAndOtherLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=kbh_SeniorNotesDueTwoThousandNineteenatFourPointSevenFivePercentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_ConvertibleNotesPayableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |