| Cover | Sep. 04, 2019 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Sep. 4, 2019 |
| Entity File Number | 001-02217 |
| Entity Registrant Name | COCA COLA CO |
| Entity Central Index Key | 0000021344 |
| Entity Tax Identification Number | 58-0628465 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | One Coca-Cola Plaza |
| Entity Address, City or Town | Atlanta |
| Entity Address, State or Province | GA |
| Entity Address, Postal Zip Code | 30313 |
| City Area Code | 404 |
| Local Phone Number | 676-2121 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Stock [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Common Stock, $0.25 Par Value |
| Trading Symbol | KO |
| Security Exchange Name | NYSE |
| Floating Rate Notes Due 2019 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Floating Rate Notes Due 2019 |
| Trading Symbol | KO19A |
| Security Exchange Name | NYSE |
| 0.000% Notes Due 2021 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 0.000% Notes Due 2021 |
| Trading Symbol | KO21B |
| Security Exchange Name | NYSE |
| Floating Rate Notes Due 2021 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Floating Rate Notes Due 2021 |
| Trading Symbol | KO21C |
| Security Exchange Name | NYSE |
| 1.125% Notes Due 2022 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 1.125% Notes Due 2022 |
| Trading Symbol | KO22 |
| Security Exchange Name | NYSE |
| 0.125% Notes Due 2022 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 0.125% Notes Due 2022 |
| Trading Symbol | KO22B |
| Security Exchange Name | NYSE |
| 0.75% Notes Due 2023 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 0.75% Notes Due 2023 |
| Trading Symbol | KO23B |
| Security Exchange Name | NYSE |
| 0.500% Notes Due 2024 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 0.500% Notes Due 2024 |
| Trading Symbol | KO24 |
| Security Exchange Name | NYSE |
| 1.875% Notes Due 2026 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 1.875% Notes Due 2026 |
| Trading Symbol | KO26 |
| Security Exchange Name | NYSE |
| 0.750% Notes Due 2026 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 0.750% Notes Due 2026 |
| Trading Symbol | KO26C |
| Security Exchange Name | NYSE |
| 1.125% Notes Due 2027 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 1.125% Notes Due 2027 |
| Trading Symbol | KO27 |
| Security Exchange Name | NYSE |
| 1.250% Notes Due 2031 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 1.250% Notes Due 2031 |
| Trading Symbol | KO31 |
| Security Exchange Name | NYSE |
| 1.625% Notes Due 2035 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 1.625% Notes Due 2035 |
| Trading Symbol | KO35 |
| Security Exchange Name | NYSE |
| 1.100% Notes Due 2036 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 1.100% Notes Due 2036 |
| Trading Symbol | KO36 |
| Security Exchange Name | NYSE |
