XML 87 R59.htm IDEA: XBRL DOCUMENT
v3.20.4

Earnings Per Share - Narrative (Details) - shares shares in Millions | 12 Months Ended |
--- | --- | ---
Nov. 30, 2020 | Nov. 30, 2018 | Jan. 29, 2013
Debt Instrument [Line Items] |  |  |
Antidilutive securities excluded from computation of earnings per share (in shares) | 0.0 | 0.8 |
Convertible senior notes due February 1, 2019 at 1.375% |  |  |
Debt Instrument [Line Items] |  |  |
Stated interest rate percentage |  |  | 1.375%

X
- Definition Antidilutive Securities Excluded from Computation of EPS, Number of Shares + References No definition available. + Details
Name: | kbh_AntidilutiveSecuritiesExcludedFromComputationOfEPSNumberOfShares
Namespace Prefix: | kbh_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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

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