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Income Taxes - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Dec. 31, 2015
Income Tax Contingency [Line Items]        
Impact on provision for income tax, out-of-period adjustments $ 7us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions      
Effective tax rate 26.60%us-gaap_EffectiveIncomeTaxRateContinuingOperations (22.00%)us-gaap_EffectiveIncomeTaxRateContinuingOperations 20.10%us-gaap_EffectiveIncomeTaxRateContinuingOperations  
Total favorable discrete items 25mdlz_EffectiveTaxRateNetTaxBenefits 52mdlz_EffectiveTaxRateNetTaxBenefits    
Net unfavorable tax charge related to the sale of joint venture 32mdlz_TaxExpenseDisposalGroupHeldForSale      
Net favorable tax audit settlements and expirations of statutes of limitations   $ 51mdlz_IncomeTaxReconciliationTaxSettlementsAndExpirationOfStatuteOfLimitations    
Scenario, Forecast        
Income Tax Contingency [Line Items]        
Estimated effective tax rate       20.50%mdlz_EstimatedAnnualEffectiveTaxRateFromContinuingOperations
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember