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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended 0 Months Ended 9 Months Ended 0 Months Ended 1 Months Ended
Dec. 31, 2014
Country
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Country
Dec. 31, 2013
Dec. 31, 2012
Oct. 01, 2014
Dec. 31, 2014
Feb. 10, 2015
Jan. 23, 2014
Feb. 11, 2015
Oct. 01, 2012
Feb. 08, 2013
Jan. 02, 2010
Summary Of Significant Accounting Policies [Line Items]                                      
Number of countries in which entity operates 165us-gaap_NumberOfCountriesInWhichEntityOperates               165us-gaap_NumberOfCountriesInWhichEntityOperates       165us-gaap_NumberOfCountriesInWhichEntityOperates            
Change in accounting policy effect of change on net revenue                   $ 37mdlz_ChangeInAccountingPolicyEffectOfChangeOnNetRevenue                  
Change in accounting policy effect of change on operating results                   6mdlz_ChangeInAccountingPolicyEffectOfChangeOnOperatingResults                  
Foreign currency impacts relating to highly inflationary accounting               (54)us-gaap_AmountRecognizedInIncomeDueToInflationaryAccounting                      
Net revenue 8,830us-gaap_Revenues 8,337us-gaap_Revenues 8,436us-gaap_Revenues 8,641us-gaap_Revenues 9,488us-gaap_Revenues 8,472us-gaap_Revenues 8,595us-gaap_Revenues 8,744us-gaap_Revenues 34,244us-gaap_Revenues 35,299us-gaap_Revenues 35,015us-gaap_Revenues                
Advertising expense                 1,552us-gaap_AdvertisingExpense 1,721us-gaap_AdvertisingExpense 1,815us-gaap_AdvertisingExpense                
Research and development expense                 455us-gaap_ResearchAndDevelopmentExpense 471us-gaap_ResearchAndDevelopmentExpense 462us-gaap_ResearchAndDevelopmentExpense                
Machinery and Equipment | Minimum                                      
Summary Of Significant Accounting Policies [Line Items]                                      
Useful life, in years                 3 years                    
Machinery and Equipment | Maximum                                      
Summary Of Significant Accounting Policies [Line Items]                                      
Useful life, in years                 20 years                    
Buildings and Building Improvements | Maximum                                      
Summary Of Significant Accounting Policies [Line Items]                                      
Useful life, in years                 40 years                    
Software | Maximum                                      
Summary Of Significant Accounting Policies [Line Items]                                      
Useful life, in years                 7 years                    
North America And Europe                                      
Summary Of Significant Accounting Policies [Line Items]                                      
Discount rate                       6.90%us-gaap_FairValueInputsDiscountRate
/ us-gaap_StatementGeographicalAxis
= mdlz_NorthAmericaAndEuropeMember
             
Latin America, Asia Pacific, and EEMEA                                      
Summary Of Significant Accounting Policies [Line Items]                                      
Discount rate                       9.90%us-gaap_FairValueInputsDiscountRate
/ us-gaap_StatementGeographicalAxis
= mdlz_LatinAmericaAsiaPacificEasternEuropeMiddleEastAfricaMember
             
Argentina                                      
Summary Of Significant Accounting Policies [Line Items]                                      
Net revenue                 693us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= country_AR
                   
Percentage of consolidated net revenues                 2.00%mdlz_PercentOfConsolidatedRevenues
/ us-gaap_StatementGeographicalAxis
= country_AR
                   
Russia                                      
Summary Of Significant Accounting Policies [Line Items]                                      
Net revenue                 1,114us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= country_RU
                   
Percentage of consolidated net revenues                 3.30%mdlz_PercentOfConsolidatedRevenues
/ us-gaap_StatementGeographicalAxis
= country_RU
                   
UKRAINE                                      
Summary Of Significant Accounting Policies [Line Items]                                      
Net revenue                 294us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= country_UA
                   
Percentage of consolidated net revenues                 0.90%mdlz_PercentOfConsolidatedRevenues
/ us-gaap_StatementGeographicalAxis
= country_UA
                   
SICAD I                                      
Summary Of Significant Accounting Policies [Line Items]                                      
Foreign currency impacts relating to highly inflationary accounting       (142)us-gaap_AmountRecognizedInIncomeDueToInflationaryAccounting
/ mdlz_ForeignCurrencyContractAxis
= mdlz_SICADOneMember
                (25)us-gaap_AmountRecognizedInIncomeDueToInflationaryAccounting
/ mdlz_ForeignCurrencyContractAxis
= mdlz_SICADOneMember
           
SICAD I | Scenario, Forecast                                      
Summary Of Significant Accounting Policies [Line Items]                                      
Foreign currency impacts relating to highly inflationary accounting                           $ (10)us-gaap_AmountRecognizedInIncomeDueToInflationaryAccounting
/ mdlz_ForeignCurrencyContractAxis
= mdlz_SICADOneMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
         
Kraft Foods Group                                      
Summary Of Significant Accounting Policies [Line Items]                                      
Percentage of shares divested                                 100.00%mdlz_PercentOfDistributionBusinessDivested
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= mdlz_KraftFoodsGroupMember
   
Venezuelan bolívar fuerte                                      
Summary Of Significant Accounting Policies [Line Items]                                      
Foreign currency exchange rate translation 6.30us-gaap_ForeignCurrencyExchangeRateTranslation1
/ us-gaap_CurrencyAxis
= currency_VEF
              6.30us-gaap_ForeignCurrencyExchangeRateTranslation1
/ us-gaap_CurrencyAxis
= currency_VEF
      6.30us-gaap_ForeignCurrencyExchangeRateTranslation1
/ us-gaap_CurrencyAxis
= currency_VEF
        6.30us-gaap_ForeignCurrencyExchangeRateTranslation1
/ us-gaap_CurrencyAxis
= currency_VEF
4.30us-gaap_ForeignCurrencyExchangeRateTranslation1
/ us-gaap_CurrencyAxis
= currency_VEF
Venezuelan bolívar fuerte | SICAD I                                      
Summary Of Significant Accounting Policies [Line Items]                                      
Foreign currency exchange rate translation 11.50us-gaap_ForeignCurrencyExchangeRateTranslation1
/ us-gaap_CurrencyAxis
= currency_VEF
/ mdlz_ForeignCurrencyContractAxis
= mdlz_SICADOneMember
    10.70us-gaap_ForeignCurrencyExchangeRateTranslation1
/ us-gaap_CurrencyAxis
= currency_VEF
/ mdlz_ForeignCurrencyContractAxis
= mdlz_SICADOneMember
        11.50us-gaap_ForeignCurrencyExchangeRateTranslation1
/ us-gaap_CurrencyAxis
= currency_VEF
/ mdlz_ForeignCurrencyContractAxis
= mdlz_SICADOneMember
      11.50us-gaap_ForeignCurrencyExchangeRateTranslation1
/ us-gaap_CurrencyAxis
= currency_VEF
/ mdlz_ForeignCurrencyContractAxis
= mdlz_SICADOneMember
           
Venezuelan bolívar fuerte | SICAD I | Scenario, Forecast                                      
Summary Of Significant Accounting Policies [Line Items]                                      
Foreign currency exchange rate translation                           12.00us-gaap_ForeignCurrencyExchangeRateTranslation1
/ us-gaap_CurrencyAxis
= currency_VEF
/ mdlz_ForeignCurrencyContractAxis
= mdlz_SICADOneMember
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
         
Venezuelan bolívar fuerte | SICAD II                                      
Summary Of Significant Accounting Policies [Line Items]                                      
Foreign currency exchange rate translation 49.99us-gaap_ForeignCurrencyExchangeRateTranslation1
/ us-gaap_CurrencyAxis
= currency_VEF
/ mdlz_ForeignCurrencyContractAxis
= mdlz_SICADTwoMember
              49.99us-gaap_ForeignCurrencyExchangeRateTranslation1
/ us-gaap_CurrencyAxis
= currency_VEF
/ mdlz_ForeignCurrencyContractAxis
= mdlz_SICADTwoMember
      49.99us-gaap_ForeignCurrencyExchangeRateTranslation1
/ us-gaap_CurrencyAxis
= currency_VEF
/ mdlz_ForeignCurrencyContractAxis
= mdlz_SICADTwoMember
           
Argentina, Pesos                                      
Summary Of Significant Accounting Policies [Line Items]                                      
Devalued percentage against US Dollar                 31.00%mdlz_ForeignCurrencyDevaluedRate
/ us-gaap_CurrencyAxis
= currency_ARS
          15.00%mdlz_ForeignCurrencyDevaluedRate
/ us-gaap_CurrencyAxis
= currency_ARS
       
Russia, Rubles                                      
Summary Of Significant Accounting Policies [Line Items]                                      
Devalued percentage against US Dollar 50.00%mdlz_ForeignCurrencyDevaluedRate
/ us-gaap_CurrencyAxis
= currency_RUB
                                   
Ukraine, Hryvnia | Subsequent Event                                      
Summary Of Significant Accounting Policies [Line Items]                                      
Devalued percentage against US Dollar                               61.00%mdlz_ForeignCurrencyDevaluedRate
/ us-gaap_CurrencyAxis
= currency_UAH
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember