v3.8.0.1
Document And Entity Information - USD ($)
$ in Billions
12 Months Ended
Dec. 30, 2017
Feb. 06, 2018
Jun. 10, 2016
Document And Entity Information [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 30, 2017    
Trading Symbol PEP    
Entity Registrant Name PEPSICO INC    
Entity Central Index Key 0000077476    
Entity Common Stock, Shares Outstanding   1,419,908,267  
Entity Public Float     $ 166.5
Document Fiscal Year Focus 2017    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --12-30    
Entity Filer Category Large Accelerated Filer    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer Yes