CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss) including noncontrolling interests	$ (186.5)	$ 1,008.5	$ (945.7)
Other comprehensive income (loss), net of tax
Foreign currency translation adjustments	(329.8)	(28.4)	113.6
Reclassification of cumulative translation adjustment	12.1	7.5	0.0
Unrealized gain (loss) on derivative instruments	153.8	37.4	(85.7)
Reclassification of derivative (gain) loss to income (loss)	9.4	5.5	(0.4)
Net change in pension and other postretirement benefit assets and liabilities	(59.6)	118.4	(39.9)
Pension and other postretirement prior service (benefit) cost and net actuarial (gain) loss amortization and settlements to income (loss)	(1.6)	5.4	(5.2)
Ownership share of unconsolidated subsidiaries' other comprehensive income (loss)	13.8	15.5	14.2
Total other comprehensive income (loss), net of tax	(201.9)	161.3	(3.4)
Comprehensive income (loss)	(388.4)	1,169.8	(949.1)
Comprehensive (income) loss attributable to noncontrolling interests	13.6	(2.3)	(5.5)
Comprehensive income (loss) attributable to Molson Coors Beverage Company	$ (374.8)	$ 1,167.5	$ (954.6)