XML 1109 R88.htm IDEA: XBRL DOCUMENT v2.4.1.9
Supplemental Guarantor Information (Condensed Consolidating Statements of Operations) (Details) (USD $)
In Thousands, unless otherwise specified
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
Condensed Consolidated Statements of Operations                      
Revenues $ 796,041us-gaap_Revenues $ 589,214us-gaap_Revenues $ 565,007us-gaap_Revenues $ 450,687us-gaap_Revenues $ 618,531us-gaap_Revenues $ 548,974us-gaap_Revenues $ 524,406us-gaap_Revenues $ 405,219us-gaap_Revenues $ 2,400,949us-gaap_Revenues $ 2,097,130us-gaap_Revenues $ 1,560,115us-gaap_Revenues
Homebuilding:                      
Revenues                 2,389,643us-gaap_HomeBuildingRevenue 2,084,978us-gaap_HomeBuildingRevenue 1,548,432us-gaap_HomeBuildingRevenue
Construction and land costs                 (1,985,651)us-gaap_ConstructionAndDevelopmentCosts (1,737,086)us-gaap_ConstructionAndDevelopmentCosts (1,332,045)us-gaap_ConstructionAndDevelopmentCosts
Selling, general and administrative expenses                 (288,023)us-gaap_SellingGeneralAndAdministrativeExpense (255,808)us-gaap_SellingGeneralAndAdministrativeExpense (236,643)us-gaap_SellingGeneralAndAdministrativeExpense
Operating income (loss)                 115,969us-gaap_OperatingIncomeLoss 92,084us-gaap_OperatingIncomeLoss (20,256)us-gaap_OperatingIncomeLoss
Interest income                 443us-gaap_InvestmentIncomeInterest 792us-gaap_InvestmentIncomeInterest 518us-gaap_InvestmentIncomeInterest
Interest Expense                 (30,750)us-gaap_InterestExpense [1] (62,690)us-gaap_InterestExpense [1] (69,804)us-gaap_InterestExpense [1]
Intercompany Interest Income (Expense)                 0kbh_IntercompanyInterestIncomeExpense 0kbh_IntercompanyInterestIncomeExpense 0kbh_IntercompanyInterestIncomeExpense
Equity in income (loss) of unconsolidated joint ventures                 1,427us-gaap_IncomeLossFromEquityMethodInvestments (933)us-gaap_IncomeLossFromEquityMethodInvestments 1,797us-gaap_IncomeLossFromEquityMethodInvestments
Pretax income (loss) 28,601us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic 28,661us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic 26,924us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic 10,763us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic 28,316us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic 26,578us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic (4,173)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic (12,358)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic 94,949us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic 38,363us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic (79,053)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
Income tax benefit 824,200us-gaap_IncomeTaxExpenseBenefit               823,400us-gaap_IncomeTaxExpenseBenefit 1,600us-gaap_IncomeTaxExpenseBenefit 20,100us-gaap_IncomeTaxExpenseBenefit
Income (Loss) from Subsidiaries, Net of Tax                 0us-gaap_IncomeLossFromSubsidiariesNetOfTax 0us-gaap_IncomeLossFromSubsidiariesNetOfTax 0us-gaap_IncomeLossFromSubsidiariesNetOfTax
Net income (loss) 852,801us-gaap_NetIncomeLoss 28,361us-gaap_NetIncomeLoss 26,624us-gaap_NetIncomeLoss 10,563us-gaap_NetIncomeLoss 28,116us-gaap_NetIncomeLoss 27,278us-gaap_NetIncomeLoss (2,973)us-gaap_NetIncomeLoss (12,458)us-gaap_NetIncomeLoss 918,349us-gaap_NetIncomeLoss 39,963us-gaap_NetIncomeLoss (58,953)us-gaap_NetIncomeLoss
KB Home Corporate                      
Condensed Consolidated Statements of Operations                      
Revenues                 0us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Homebuilding:                      
Revenues                 0us-gaap_HomeBuildingRevenue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_HomeBuildingRevenue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_HomeBuildingRevenue
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Construction and land costs                 0us-gaap_ConstructionAndDevelopmentCosts
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_ConstructionAndDevelopmentCosts
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_ConstructionAndDevelopmentCosts
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Selling, general and administrative expenses                 (68,717)us-gaap_SellingGeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(60,545)us-gaap_SellingGeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(60,101)us-gaap_SellingGeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Operating income (loss)                 (68,717)us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(60,545)us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(60,101)us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Interest income                 432us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
768us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
480us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Interest Expense                 (165,485)us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(143,902)us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(127,291)us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Intercompany Interest Income (Expense)                 287,017kbh_IntercompanyInterestIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
203,096kbh_IntercompanyInterestIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
176,977kbh_IntercompanyInterestIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Equity in income (loss) of unconsolidated joint ventures                 0us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Pretax income (loss)                 53,247us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(583)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(9,935)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Income tax benefit                 215,691us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
100us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
7,900us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Income (Loss) from Subsidiaries, Net of Tax                 649,411us-gaap_IncomeLossFromSubsidiariesNetOfTax
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
40,446us-gaap_IncomeLossFromSubsidiariesNetOfTax
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(56,918)us-gaap_IncomeLossFromSubsidiariesNetOfTax
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Net income (loss)                 918,349us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
39,963us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(58,953)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Guarantor Subsidiaries                      
Condensed Consolidated Statements of Operations                      
Revenues                 2,148,048us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
1,872,648us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
1,378,749us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Homebuilding:                      
Revenues                 2,148,048us-gaap_HomeBuildingRevenue
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
1,872,648us-gaap_HomeBuildingRevenue
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
1,378,749us-gaap_HomeBuildingRevenue
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Construction and land costs                 (1,776,839)us-gaap_ConstructionAndDevelopmentCosts
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(1,549,426)us-gaap_ConstructionAndDevelopmentCosts
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(1,192,877)us-gaap_ConstructionAndDevelopmentCosts
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Selling, general and administrative expenses                 (188,690)us-gaap_SellingGeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(161,415)us-gaap_SellingGeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(145,291)us-gaap_SellingGeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Operating income (loss)                 182,519us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
161,807us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
40,581us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Interest income                 9us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
18us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
14us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Interest Expense                 (6,056)us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(5,199)us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(5,364)us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Intercompany Interest Income (Expense)                 (135,978)kbh_IntercompanyInterestIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(108,252)kbh_IntercompanyInterestIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(97,304)kbh_IntercompanyInterestIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Equity in income (loss) of unconsolidated joint ventures                 (2,551)us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(2,506)us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
 
Pretax income (loss)                 37,943us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
45,868us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(63,058)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Income tax benefit                 551,203us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
1,800us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
10,800us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Income (Loss) from Subsidiaries, Net of Tax                 0us-gaap_IncomeLossFromSubsidiariesNetOfTax
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_IncomeLossFromSubsidiariesNetOfTax
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0us-gaap_IncomeLossFromSubsidiariesNetOfTax
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Net income (loss)                 589,146us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
47,668us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(52,258)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Non-Guarantor Subsidiaries                      
Condensed Consolidated Statements of Operations                      
Revenues                 252,901us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
224,482us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
181,366us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Homebuilding:                      
Revenues                 241,595us-gaap_HomeBuildingRevenue
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
212,330us-gaap_HomeBuildingRevenue
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
169,683us-gaap_HomeBuildingRevenue
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Construction and land costs                 (208,812)us-gaap_ConstructionAndDevelopmentCosts
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(187,660)us-gaap_ConstructionAndDevelopmentCosts
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(139,168)us-gaap_ConstructionAndDevelopmentCosts
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Selling, general and administrative expenses                 (30,616)us-gaap_SellingGeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(33,848)us-gaap_SellingGeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(31,251)us-gaap_SellingGeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Operating income (loss)                 2,167us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(9,178)us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(736)us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Interest income                 2us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
6us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
24us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Interest Expense                 0us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(1)us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Intercompany Interest Income (Expense)                 (10,248)kbh_IntercompanyInterestIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(8,433)kbh_IntercompanyInterestIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(16,821)kbh_IntercompanyInterestIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Equity in income (loss) of unconsolidated joint ventures                 3,292us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
499us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
 
Pretax income (loss)                 3,759us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(6,922)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(6,060)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Income tax benefit                 56,506us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(300)us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
1,400us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Income (Loss) from Subsidiaries, Net of Tax                 0us-gaap_IncomeLossFromSubsidiariesNetOfTax
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_IncomeLossFromSubsidiariesNetOfTax
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_IncomeLossFromSubsidiariesNetOfTax
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Net income (loss)                 60,265us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(7,222)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
(4,660)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Consolidating Adjustments                      
Condensed Consolidated Statements of Operations                      
Revenues                 0us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_Revenues
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Homebuilding:                      
Revenues                 0us-gaap_HomeBuildingRevenue
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_HomeBuildingRevenue
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_HomeBuildingRevenue
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Construction and land costs                 0us-gaap_ConstructionAndDevelopmentCosts
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_ConstructionAndDevelopmentCosts
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_ConstructionAndDevelopmentCosts
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Selling, general and administrative expenses                 0us-gaap_SellingGeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_SellingGeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_SellingGeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Operating income (loss)                 0us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Interest income                 0us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_InvestmentIncomeInterest
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Interest Expense                 140,791us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
86,411us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
62,852us-gaap_InterestExpense
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Intercompany Interest Income (Expense)                 (140,791)kbh_IntercompanyInterestIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
(86,411)kbh_IntercompanyInterestIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
(62,852)kbh_IntercompanyInterestIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Equity in income (loss) of unconsolidated joint ventures                 0us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
 
Pretax income (loss)                 0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Income tax benefit                 0us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
0us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Income (Loss) from Subsidiaries, Net of Tax                 (649,411)us-gaap_IncomeLossFromSubsidiariesNetOfTax
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
(40,446)us-gaap_IncomeLossFromSubsidiariesNetOfTax
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
56,918us-gaap_IncomeLossFromSubsidiariesNetOfTax
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Net income (loss)                 (649,411)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
(40,446)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
56,918us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
Homebuilding [Member]                      
Condensed Consolidated Statements of Operations                      
Revenues                 2,389,643us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
2,084,978us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
1,548,432us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
Homebuilding:                      
Equity in income (loss) of unconsolidated joint ventures                 741us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
(2,007)us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
(394)us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
Pretax income (loss)                 86,403us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
28,179us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
(89,936)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
Homebuilding [Member] | KB Home Corporate                      
Homebuilding:                      
Equity in income (loss) of unconsolidated joint ventures                     0us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
Pretax income (loss)                 53,247us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
(583)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
(9,935)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
Homebuilding [Member] | Guarantor Subsidiaries                      
Homebuilding:                      
Equity in income (loss) of unconsolidated joint ventures                     (985)us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
Pretax income (loss)                 37,943us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
45,868us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
(63,058)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
Homebuilding [Member] | Non-Guarantor Subsidiaries                      
Homebuilding:                      
Equity in income (loss) of unconsolidated joint ventures                     591us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
Pretax income (loss)                 (4,787)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
(17,106)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
(16,943)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
Homebuilding [Member] | Consolidating Adjustments                      
Homebuilding:                      
Equity in income (loss) of unconsolidated joint ventures                     0us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
Pretax income (loss)                 0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_HomebuildingMember
Financial services [Member]                      
Condensed Consolidated Statements of Operations                      
Revenues                 11,306us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
12,152us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
11,683us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
Homebuilding:                      
Operating income (loss)                 7,860us-gaap_OperatingIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
9,110us-gaap_OperatingIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
8,692us-gaap_OperatingIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
Equity in income (loss) of unconsolidated joint ventures                 686us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
1,074us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
2,191us-gaap_IncomeLossFromEquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
Pretax income (loss)                 8,546us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
10,184us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
10,883us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
Financial services [Member] | KB Home Corporate                      
Homebuilding:                      
Pretax income (loss)                 0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
Financial services [Member] | Guarantor Subsidiaries                      
Homebuilding:                      
Pretax income (loss)                 0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
Financial services [Member] | Non-Guarantor Subsidiaries                      
Homebuilding:                      
Pretax income (loss)                 8,546us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
10,184us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
10,883us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
Financial services [Member] | Consolidating Adjustments                      
Homebuilding:                      
Pretax income (loss)                 $ 0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
$ 0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
$ 0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
/ dei_LegalEntityAxis
= us-gaap_ConsolidationEliminationsMember
/ us-gaap_StatementBusinessSegmentsAxis
= kbh_FinancialServicesMember
[1] Amounts for the years ended November 30, 2013 and 2012 included losses on the early extinguishment of debt of $10.4 million and $10.3 million, respectively, associated with the purchase and retirement of certain senior notes ahead of their maturity.