Segment Reporting - Income (Loss) Before Income Taxes by Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting
Net sales	$ 10,701.0	$ 10,279.7	$ 9,654.0
Equity income (loss)	4.7	0.0	0.0
Interest expense	(250.6)	(260.3)	(274.6)
Interest income	4.3	2.0	3.3
Income (loss) before income taxes	(62.5)	1,239.0	(643.9)
Income tax benefit (expense)	(124.0)	(230.5)	(301.8)
Net income (loss)	(186.5)	1,008.5	(945.7)
Net (income) loss attributable to noncontrolling interests	11.2	(2.8)	(3.3)
Net income (loss) attributable to Molson Coors Beverage Company	(175.3)	1,005.7	(949.0)
Unallocated
Segment Reporting
Net sales	0.0	0.0	0.0
Equity income (loss)	0.0
Interest expense	(244.0)	(253.1)	(266.3)
Interest income	3.9	1.8	2.8
Income (loss) before income taxes	(436.4)	29.6	(120.7)
Inter-segment net sales eliminations
Segment Reporting
Net sales	(15.7)	(7.6)	(14.9)
Equity income (loss)	0.0
Interest expense	0.0	0.0	0.0
Interest income	0.0	0.0	0.0
Income (loss) before income taxes	0.0	0.0	0.0
Americas | Operating segments
Segment Reporting
Net sales	8,711.5	8,485.0	8,237.0
Equity income (loss)	4.7
Interest expense	(1.5)	(1.4)	(2.6)
Interest income	0.2	0.0	0.2
Income (loss) before income taxes	312.9	1,176.5	1,080.5
EMEA&APAC | Operating segments
Segment Reporting
Net sales	2,005.2	1,802.3	1,431.9
Equity income (loss)	0.0
Interest expense	(5.1)	(5.8)	(5.7)
Interest income	0.2	0.2	0.3
Income (loss) before income taxes	$ 61.0	$ 32.9	$ (1,603.7)