Document and Entity Information - shares	8 Months Ended
	Sep. 07, 2019	Sep. 26, 2019
Document and Entity Information [Line Items]
Document Type	10-Q
Document Period End Date	Sep. 07, 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
Entity Address, Postal Zip Code	10577
City Area Code	914
Local Phone Number	253-2000
Entity Common Stock, Shares Outstanding		1,394,435,338
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	Q3
Amendment Flag	false
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
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