XML 1106 R81.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Employee Benefit and Stock Plans (Narrative) (Details) $ / shares in Units, $ in Thousands |  |  |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Oct. 05, 2018 $ / shares | Oct. 05, 2017 $ / shares | Oct. 06, 2016 $ / shares | Nov. 30, 2018 USD ($) $ / shares shares | Nov. 30, 2017 USD ($) $ / shares shares | Nov. 30, 2016 USD ($) $ / shares shares | Apr. 07, 2016 shares | Nov. 30, 2015 shares | Apr. 03, 2014 shares
Employee Benefit and Stock Plans (Textual) [Abstract] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures |  |  |  | 0 | 0 | 1,012,686 |  |  |
Employee Benefit and Stock Plan (Additional Textual) [Abstract] |  |  |  |  |  |  |  |  |
Exercises in period, total intrinsic value | $ |  |  |  | $ 11,800 | $ 12,100 | $ 1,400 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period |  |  |  | 1,195,926 | 1,650,360 | 551,898 |  |  |
Intrinsic value of stock options outstanding | $ |  |  |  | $ 51,900 | $ 136,300 | $ 24,500 |  |  |
Intrinsic value of stock options exercisable | $ |  |  |  | 50,500 | 121,300 | $ 23,300 |  |  |
Weighted average fair value of stock options granted | $ / shares |  |  |  |  |  | $ 5.82 |  |  |
Tax shortfall from cancellation of stock awards | $ |  |  |  |  | 3,300 | $ 2,200 |  |  |
Excess Tax Benefit (Tax Deficiency) from Share-based Compensation, Financing Activities | $ |  |  |  | $ 0 | $ 958 | $ 186 |  |  |
Shares of common stock held in trust |  |  |  | 8,157,235 | 8,897,954 |  |  |  |
Share Based payments award terms of Award |  |  |  |  |  | 5 years |  |  |
Stock Options |  |  |  |  |  |  |  |  |
Employee Benefit and Stock Plans (Textual) [Abstract] |  |  |  |  |  |  |  |  |
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition |  |  |  | 10 months 30 days |  |  |  |  |
Total unrecognized stock-based compensation expense related to unvested stock option awards | $ |  |  |  | $ 100 |  |  |  |  |
Restricted Stock |  |  |  |  |  |  |  |  |
Employee Benefit and Stock Plans (Textual) [Abstract] |  |  |  |  |  |  |  |  |
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition |  |  |  | 3 years |  |  |  |  |
Minimum period of restriction imposed on share grant lapse |  |  |  | 3 years |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  |  | 303,030 | 321,835 | 453,703 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares |  |  |  | $ 23.05 | $ 24.49 | $ 15.73 |  |  |
Total unrecognized stock-based compensation expense related to unvested stock option awards | $ |  |  |  | $ 11,600 |  |  |  |  |
Employee Benefit and Stock Plan (Additional Textual) [Abstract] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number |  |  |  | 555,457 | 503,926 | 604,619 |  | 416,977 |
Performance Shares |  |  |  |  |  |  |  |  |
Employee Benefit and Stock Plans (Textual) [Abstract] |  |  |  |  |  |  |  |  |
Minimum period of restriction imposed on share grant lapse |  |  |  | 3 years |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  |  | 603,424 | 424,797 | 369,281 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares | $ 23.05 | $ 25.64 | $ 16.21 | $ 25.70 | $ 22.99 | $ 13.81 |  |  |
Total unrecognized stock-based compensation expense related to unvested stock option awards | $ |  |  |  | $ 27,400 |  |  |  |  |
Employee Benefit and Stock Plan (Additional Textual) [Abstract] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number |  |  |  | 1,090,967 | 925,232 | 809,860 |  | 820,209 |
Director Plan SARs [Domain] |  |  |  |  |  |  |  |  |
Employee Benefit and Stock Plans (Textual) [Abstract] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number |  |  |  | 308,880 | 308,880 | 452,983 |  |  |
Non-Employee Director Deferred Common Stock [Domain] |  |  |  |  |  |  |  |  |
Employee Benefit and Stock Plans (Textual) [Abstract] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number |  |  |  | 490,240 | 456,875 | 485,632 |  |  |
Maximum | Performance Shares |  |  |  |  |  |  |  |  |
Employee Benefit and Stock Plans (Textual) [Abstract] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants, Award Share Percentage |  |  |  | 200.00% |  |  |  |  |
Minimum | Performance Shares |  |  |  |  |  |  |  |  |
Employee Benefit and Stock Plans (Textual) [Abstract] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants, Award Share Percentage |  |  |  | 0.00% |  |  |  |  |
Equity Incentive Two Thousand Fourteen Plan [Member] [Member] |  |  |  |  |  |  |  |  |
Employee Benefit and Stock Plans (Textual) [Abstract] |  |  |  |  |  |  |  |  |
Number of shares authorized for issuance of stock based awards to employees |  |  |  | 12,300,000 |  |  | 7,500,000 |  | 4,800,000
Grant of stock option, Reduce the plan share capacity per share |  |  |  |  |  |  | 1 |  |
Grant of restricted stock, Reduce the Plan share capacity per share |  |  |  |  |  |  | 1.78 |  |
Employee Benefit and Stock Plan (Additional Textual) [Abstract] |  |  |  |  |  |  |  |  |
Share Based payments award terms of Award |  |  |  | 10 years |  |  |  |  |
Performance Based Incentive Plan for Senior Management [Member] |  |  |  |  |  |  |  |  |
Employee Benefit and Stock Plan (Additional Textual) [Abstract] |  |  |  |  |  |  |  |  |
Share Based payments award terms of Award |  |  |  | 15 years |  |  |  |  |
2010 Equity Incentive Plan |  |  |  |  |  |  |  |  |
Employee Benefit and Stock Plans (Textual) [Abstract] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures |  |  |  | 0 |  |  |  |  |
Saving Plan |  |  |  |  |  |  |  |  |
Employee Benefit and Stock Plans (Textual) [Abstract] |  |  |  |  |  |  |  |  |
Aggregate cost related to saving plan | $ |  |  |  | $ 6,000 | $ 6,200 | $ 5,300 |  |  |
Net assets invested in funds consisting common stock |  |  |  | 5.00% | 7.00% | 5.00% |  |  |
Director Plan SARs [Domain] |  |  |  |  |  |  |  |  |
Employee Benefit and Stock Plan (Additional Textual) [Abstract] |  |  |  |  |  |  |  |  |
Share Based payments award terms of Award |  |  |  | 15 years |  |  |  |  |
Restricted Stock Vesting Period 12-1-2017 ending 11-30-2020 [Domain] |  |  |  |  |  |  |  |  |
Employee Benefit and Stock Plans (Textual) [Abstract] |  |  |  |  |  |  |  |  |
Minimum period of restriction imposed on share grant lapse |  |  |  | 3 years |  |  |  |  |
PSU 2014 [Domain] | Performance Shares |  |  |  |  |  |  |  |  |
Employee Benefit and Stock Plans (Textual) [Abstract] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  |  |  | 125,460 |  |  |  |

X
- Definition Employee benefit and stock plan. + References No definition available. + Details
Name: | kbh_EmployeeBenefitAndStockPlanAdditionalTextualAbstract
Namespace Prefix: | kbh_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Employee benefit and stock plans. + References No definition available. + Details
Name: | kbh_EmployeeBenefitAndStockPlansTextualAbstract
Namespace Prefix: | kbh_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of plan net assets invested in company common stock. + References No definition available. + Details
Name: | kbh_PercentageOfPlanNetAssetsInvestedInCompanyCommonStock
Namespace Prefix: | kbh_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Reduction of plan per share capacity for grants of restricted stock and other similar full value awards. + References No definition available. + Details
Name: | kbh_ReductionofPlanShareCapacityforGrantsofRestrictedStockandOtherSimilarFullValueAwardsRatio
Namespace Prefix: | kbh_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Reduction of plan per share capacity for grants of stock option and other similar Awards. + References No definition available. + Details
Name: | kbh_ReductionofPlanShareCapacityforGrantsofStockOptionandOtherSimilarAwardsRatio
Namespace Prefix: | kbh_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants, Award Share Percentage + References No definition available. + Details
Name: | kbh_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsAwardSharePercentage
Namespace Prefix: | kbh_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tax shortfall from cancellation of stock awards. + References No definition available. + Details
Name: | kbh_TaxShortfallFromCancellationOfStockAwards
Namespace Prefix: | kbh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of common stock held in a trust that has been set up specifically to accumulate stock for the sole purpose of distribution to participating employees but not yet earned. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 25 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=65888597&loc=d3e16701-113920 + Details
Name: | us-gaap_CommonStockSharesHeldInEmployeeTrustShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Unrecognized cost of unvested share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cash inflow from realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 20 -Section 55 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=96864182&loc=d3e11374-113907 + Details
Name: | us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of equity instruments other than options outstanding, including both vested and non-vested instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Net number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.D.2) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of share options (or share units) exercised during the current period. + 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(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 Reference 3: 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(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: 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=27012166&loc=d3e187085-122770 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_StockOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_PerformanceSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=kbh_DirectorPlanSARsDomain
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=kbh_NonEmployeeDirectorDeferredCommonStockDomain
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: |

X
- Details
Name: | us-gaap_PlanNameAxis=kbh_EquityIncentiveTwoThousandFourteenPlanMemberMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=kbh_PerformanceBasedIncentivePlanforSeniorManagementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=kbh_EquityIncentiveTwoThousandTenPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=kbh_SavingPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=kbh_DirectorPlanSARsDomain
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=kbh_PerformanceSharesVestingPeriod1212017ending11302020Domain
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=kbh_PSU2014Domain
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |