| Document and Entity Information Document | Jul. 13, 2020 |
| Entity Listings [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Jul. 13, 2020 |
| Entity Registrant Name | PepsiCo, Inc. |
| Entity Incorporation, State or Country Code | NC |
| Entity File Number | 1-1183 |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0000077476 |
| Amendment Flag | false |
| Common stock, par value 1-2/3 cents per share [Member] | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | Common Stock, par value 1-2/3 cents per share |
| Trading Symbol | PEP |
| Security Exchange Name | NASDAQ |
| One Point Seven Five Percent Notes Due 2021 [Member] | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | 1.750% Senior Notes Due 2021 |
| Trading Symbol | PEP21a |
| Security Exchange Name | NASDAQ |
| Two Point Five Percent Notes Due 2022 [Member] | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | 2.500% Senior Notes Due 2022 |
| Trading Symbol | PEP22a |
| Security Exchange Name | NASDAQ |
| Zero Point Two Five Percent Notes Due 2024 [Member] | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | 0.250% Senior Notes Due 2024 |
| Trading Symbol | PEP24 |
| Security Exchange Name | NASDAQ |
| Two Point Six Two Five Percent Notes Due 2026 [Member] | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | 2.625% Senior Notes Due 2026 |
| Trading Symbol | PEP26 |
| Security Exchange Name | NASDAQ |
| Zero Point Seven Five Percent Notes Due 2027 [Member] | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | 0.750% Senior Notes Due 2027 |
| Trading Symbol | PEP27 |
| Security Exchange Name | NASDAQ |
| Zero Point Eight Seven Five Percent Notes Due 2028 [Member] | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | 0.875% Senior Notes Due 2028 |
| Trading Symbol | PEP28 |
| Security Exchange Name | NASDAQ |
| Zero Point Five Percent Notes Due 2028 [Member] | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | 0.500% Senior Notes Due 2028 |
| Trading Symbol | PEP28a |
| Security Exchange Name | NASDAQ |
| One Point One Two Five Percent Notes Due 2031 [Member] | |
| Entity Listings [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 [Member] | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | 0.875% Senior Notes Due 2039 |
| Trading Symbol | PEP39 |
| Security Exchange Name | NASDAQ |
