CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Statement [Abstract]
Sales	$ 13,040.3	$ 13,734.3	$ 13,884.6
Excise taxes	(1,899.5)	(2,107.3)	(2,182.5)
Net sales	11,140.8	11,627.0	11,702.1
Cost of goods sold	(6,866.2)	(7,093.6)	(7,333.3)
Gross profit	4,274.6	4,533.4	4,368.8
Marketing, general and administrative expenses	(2,643.9)	(2,717.5)	(2,779.9)
Goodwill impairment	(3,645.7)	0.0	0.0
Other operating income (expense), net	(335.3)	(65.4)	(162.7)
Equity income (loss)	13.4	2.7	12.0
Operating income (loss)	(2,336.9)	1,753.2	1,438.2
Interest expense	(247.9)	(282.7)	(234.0)
Interest income	20.6	35.4	25.4
Other pension and postretirement benefit (cost), net	14.4	(5.0)	10.2
Other non-operating income (expense), net	31.8	2.1	12.7
Total non-operating income (expense), net	(181.1)	(250.2)	(185.7)
Income (loss) before income taxes	(2,518.0)	1,503.0	1,252.5
Income tax benefit (expense)	337.8	(345.3)	(296.1)
Net income (loss)	(2,180.2)	1,157.7	956.4
Net (income) loss attributable to noncontrolling interests	40.6	(35.3)	(7.5)
Net income (loss) attributable to Molson Coors Beverage Company	$ (2,139.6)	$ 1,122.4	$ 948.9
Net income (loss) attributable to Molson Coors Beverage Company per share
Basic (in dollars per share)	$ (10.75)	$ 5.38	$ 4.39
Diluted (in dollars per share)	$ (10.75)	$ 5.35	$ 4.37
Weighted-average shares outstanding
Basic (in shares)	199.1	208.8	216.0
Dilutive effect of share-based awards (in shares)	0.0	1.1	1.3
Diluted (in shares)	199.1	209.9	217.3