v3.19.2
Document and Entity Information - shares
6 Months Ended
Jun. 15, 2019
Jul. 01, 2019
Document and Entity Information [Line Items]    
Document Type 10-Q  
Document Period End Date Jun. 15, 2019  
Entity File Number 1-1183  
Entity Interactive Data Current Yes  
Entity Current Reporting Status Yes  
Entity Registrant Name PEPSICO INC  
Entity Incorporation, State or Country Code NC  
Entity Address, City or Town Purchase  
Entity Address, State or Province NY  
Entity Tax Identification Number 13-1584302  
Entity Address, Address Line One 700 Anderson Hill Road, Purchase, New York  
Entity Address, Postal Zip Code 10577  
Local Phone Number 914-253-2000  
Entity Information, Former Legal or Registered Name N/A  
Entity Common Stock, Shares Outstanding   1,398,169,503
Entity Central Index Key 0000077476  
Current Fiscal Year End Date --12-28  
Entity Filer Category Large Accelerated Filer  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Entity Emerging Growth Company false  
Entity Small Business false  
Entity Shell Company false  
City Area Code 914  
Document Quarterly Report true  
Document Transition Report false  
One Point One Two Five Percent Notes Due 2031 [Member]    
Document and Entity Information [Line Items]    
Title of 12(b) Security 1.125% Senior Notes Due 2031  
Trading Symbol PEP31  
Name of Exchange on which Security is Registered NASDAQ  
Zero Point Seven Five Percent Notes Due 2027 [Member]    
Document and Entity Information [Line Items]    
Title of 12(b) Security 0.750% Senior Notes Due 2027  
Trading Symbol PEP27  
Name of Exchange on which Security is Registered NASDAQ  
Zero Point Eight Seven Five Percent Notes Due 2028 [Member]    
Document and Entity Information [Line Items]    
Title of 12(b) Security 0.875% Senior Notes Due 2028  
Trading Symbol PEP28  
Name of Exchange on which Security is Registered NASDAQ  
Two Point Six Two Five Percent Notes Due 2026 [Member]    
Document and Entity Information [Line Items]    
Title of 12(b) Security 2.625% Senior Notes Due 2026  
Trading Symbol PEP26  
Name of Exchange on which Security is Registered NASDAQ  
One Point Seven Five Percent Notes Due 2021 [Member]    
Document and Entity Information [Line Items]    
Title of 12(b) Security 1.750% Senior Notes Due 2021  
Trading Symbol PEP21a  
Name of Exchange on which Security is Registered NASDAQ  
Two Point Five Percent Notes Due 2022 [Member]    
Document and Entity Information [Line Items]    
Title of 12(b) Security 2.500% Senior Notes Due 2022  
Trading Symbol PEP22a  
Name of Exchange on which Security is Registered NASDAQ  
Common stock, par value 1-2/3 cents per share [Member]    
Document and Entity Information [Line Items]    
Title of 12(b) Security Common Stock, par value 1-2/3 cents per share  
Trading Symbol PEP  
Name of Exchange on which Security is Registered NASDAQ