| Cover | May 26, 2020 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | May 26, 2020 |
| Entity File Number | 1-14829 |
| Entity Registrant Name | MOLSON COORS BEVERAGE COMPANY |
| Entity Central Index Key | 0000024545 |
| Entity Tax Identification Number | 84-0178360 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | P.O. Box 4030 |
| Entity Address, Address Line Two | NH353 |
| Entity Address, City or Town | Golden |
| Entity Address, State or Province | CO |
| Entity Address, Postal Zip Code | 80401 |
| City Area Code | 303 |
| Local Phone Number | 927-2337 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Senior Notes Due 2024 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 1.25% Senior Notes due 2024 |
| Trading Symbol | TAP |
| Security Exchange Name | NYSE |
| Common Class A [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Class A Common Stock, par value $0.01 |
| Trading Symbol | TAP.A |
| Security Exchange Name | NYSE |
| Common Class B [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Class B Common Stock, par value $0.01 |
| Trading Symbol | TAP |
| Security Exchange Name | NYSE |
| CANADA | |
| Document Information [Line Items] | |
| Entity Address, Address Line One | 1555 Notre Dame Street East |
| Entity Address, City or Town | Montréal |
| Entity Address, State or Province | QC |
| Entity Address, Country | CA |
| Entity Address, Postal Zip Code | H2L 2R5 |
| City Area Code | 514 |
| Local Phone Number | 521-1786 |
