Cover Page - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2019	Feb. 05, 2020	Jun. 28, 2019
Document Information [Line Items]
Document Type	10-K
Document Period End Date	Dec. 31, 2019
Document Annual Report	true
Document Transition Report	false
Entity File Number	1-14829
Entity Registrant Name	Molson Coors Beverage Company
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	84-0178360
Entity Address, Address Line One	1801 California Street, Suite 4600
Entity Address, City or Town	Denver
Entity Address, State or Province	CO
Entity Address, Country	US
Entity Address, Postal Zip Code	80202
City Area Code	303
Local Phone Number	927-2337
Amendment Flag	false
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 10.2
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Central Index Key	0000024545
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Interactive Data Current	Yes
Class A common stock, voting
Document Information [Line Items]
Entity Common Stock, shares outstanding		2,560,668
Common stock issued, Class B
Document Information [Line Items]
Entity Common Stock, shares outstanding		196,269,611
Class A exchangeable shares
Document Information [Line Items]
Entity Common Stock, shares outstanding		2,725,130
Class B Exchangeable Shares
Document Information [Line Items]
Entity Common Stock, shares outstanding		14,826,035
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
NEW YORK STOCK EXCHANGE, INC. | Class A common stock, voting
Document Information [Line Items]
Title of 12(b) Security	Class A Common Stock, $0.01 par value
Trading Symbol	TAP.A
Security Exchange Name	NYSE
NEW YORK STOCK EXCHANGE, INC. | Common stock issued, Class B
Document Information [Line Items]
Title of 12(b) Security	Class B Common Stock, $0.01 par value
Trading Symbol	TAP
Security Exchange Name	NYSE
NEW YORK STOCK EXCHANGE, INC. | Senior Notes Due 2024
Document Information [Line Items]
Title of 12(b) Security	1.25% Senior Notes due 2024
Trading Symbol	TAP
Security Exchange Name	NYSE