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Restructuring, Impairment and Integration Charges (Schedule of Merger and Integration Activity) (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
 12 Months Ended
Dec. 27, 2014
Dec. 28, 2013
Dec. 29, 2012
Restructuring Cost and Reserve [Line Items]      
Other Restructuring Costs $ 67us-gaap_OtherRestructuringCosts    
Other Restructuring Costs, Net of Tax 54pep_OtherRestructuringCostsNetofTax    
Other Restructuring Costs, Net of Tax, Per Share Amount $ 0.04pep_OtherRestructuringCostsNetofTaxPerShareAmount    
Restructuring Reserve [Roll Forward]      
Merger and integration charges 0us-gaap_BusinessCombinationIntegrationRelatedCosts 10us-gaap_BusinessCombinationIntegrationRelatedCosts 16us-gaap_BusinessCombinationIntegrationRelatedCosts
Cash payments 0us-gaap_PaymentsForMergerRelatedCosts (25)us-gaap_PaymentsForMergerRelatedCosts (83)us-gaap_PaymentsForMergerRelatedCosts
Latin America Foods      
Restructuring Cost and Reserve [Line Items]      
Other Restructuring Costs 11us-gaap_OtherRestructuringCosts
/ us-gaap_StatementBusinessSegmentsAxis
= pep_LatinAmericaFoodsMember		    
Europe      
Restructuring Cost and Reserve [Line Items]      
Other Restructuring Costs 26us-gaap_OtherRestructuringCosts
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_EuropeMember		    
Pepsico Asia Middle East And Africa      
Restructuring Cost and Reserve [Line Items]      
Other Restructuring Costs $ 30us-gaap_OtherRestructuringCosts
/ us-gaap_StatementBusinessSegmentsAxis
= pep_PepsicoAsiaMiddleEastAndAfricaMember