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Stock Plans - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended 0 Months Ended 1 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
May 21, 2014
Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unamortized compensation expense related to our stock options $ 67us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions        
Stock Options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Compensation expense 47us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= mdlz_StockOptionPlansMember
39us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= mdlz_StockOptionPlansMember
39us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= mdlz_StockOptionPlansMember
   
Deferred tax benefit related to compensation expense 12us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
/ us-gaap_AwardTypeAxis
= mdlz_StockOptionPlansMember
11us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
/ us-gaap_AwardTypeAxis
= mdlz_StockOptionPlansMember
11us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
/ us-gaap_AwardTypeAxis
= mdlz_StockOptionPlansMember
   
Unamortized compensation expense recognition period 2 years        
Restricted And Deferred Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Compensation expense 94us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= mdlz_RestrictedAndDeferredStockMember
94us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= mdlz_RestrictedAndDeferredStockMember
90us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= mdlz_RestrictedAndDeferredStockMember
   
Deferred tax benefit related to compensation expense 26us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
/ us-gaap_AwardTypeAxis
= mdlz_RestrictedAndDeferredStockMember
28us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
/ us-gaap_AwardTypeAxis
= mdlz_RestrictedAndDeferredStockMember
27us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
/ us-gaap_AwardTypeAxis
= mdlz_RestrictedAndDeferredStockMember
   
Unamortized compensation expense recognition period 2 years        
Unamortized compensation expense related to restricted and deferred stock 128us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
/ us-gaap_AwardTypeAxis
= mdlz_RestrictedAndDeferredStockMember
       
Amended 2005 Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Additional number of shares available for issuance under stock option plan       75.7us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= mdlz_AmendedAndRestatedTwoThousandFiveStockIncentivePlanMember
 
Shares authorized to be issued under stock option plan       243.7us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= mdlz_AmendedAndRestatedTwoThousandFiveStockIncentivePlanMember
 
Shares available to be granted 90.6us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= mdlz_AmendedAndRestatedTwoThousandFiveStockIncentivePlanMember
       
Kraft Foods Group          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Cash received from Kraft Foods Group related to the Spin-Off         $ 55mdlz_CashReceivedRelatedToSpinoff
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= mdlz_KraftFoodsGroupMember