Cover Page - USD ($) $ in Billions	12 Months Ended
	Dec. 28, 2019	Feb. 06, 2020	Jun. 14, 2019
Document and Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 28, 2019
Document Transition Report	false
Entity File Number	1-1183
Entity Registrant Name	PepsiCo, Inc.
Entity Incorporation, State or Country Code	NC
Entity Tax Identification Number	13-1584302
Entity Address, Address Line One	700 Anderson Hill Road
Entity Address, City or Town	Purchase
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10577
City Area Code	914
Local Phone Number	253-2000
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 185.4
Entity Common Stock, Shares Outstanding		1,389,544,618
Documents Incorporated by Reference [Text Block]	Portions of the Proxy Statement relating to PepsiCo, Inc.’s 2020 Annual Meeting of Shareholders are incorporated by reference into Part III of this Form 10-K.
Amendment Flag	false
Entity Central Index Key	0000077476
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-28
Common stock, par value 1-2/3 cents per share
Document and Entity Information [Line Items]
Title of 12(b) Security	Common Stock, par value 1-2/3 cents per share
Trading Symbol	PEP
Security Exchange Name	NASDAQ
Two Point Five Percent Notes Due 2022
Document and Entity Information [Line Items]
Title of 12(b) Security	2.500% Senior Notes Due 2022
Trading Symbol	PEP22a
Security Exchange Name	NASDAQ
One Point Seven Five Percent Notes Due 2021
Document and Entity Information [Line Items]
Title of 12(b) Security	1.750% Senior Notes Due 2021
Trading Symbol	PEP21a
Security Exchange Name	NASDAQ
Two Point Six Two Five Percent Notes Due 2026
Document and Entity Information [Line Items]
Title of 12(b) Security	2.625% Senior Notes Due 2026
Trading Symbol	PEP26
Security Exchange Name	NASDAQ
Zero Point Eight Seven Five Percent Notes Due 2028
Document and Entity Information [Line Items]
Title of 12(b) Security	0.875% Senior Notes Due 2028
Trading Symbol	PEP28
Security Exchange Name	NASDAQ
Zero Point Seven Five Percent Notes Due 2027
Document and Entity Information [Line Items]
Title of 12(b) Security	0.750% Senior Notes Due 2027
Trading Symbol	PEP27
Security Exchange Name	NASDAQ
One Point One Two Five Percent Notes Due 2031
Document and Entity Information [Line Items]
Title of 12(b) Security	1.125% Senior Notes Due 2031
Trading Symbol	PEP31
Security Exchange Name	NASDAQ
Zero Point Eight Seven Five Notes Due 2039
Document and Entity Information [Line Items]
Title of 12(b) Security	0.875% Senior Notes Due 2039
Trading Symbol	PEP39
Security Exchange Name	NASDAQ