CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net income (loss) including noncontrolling interests	$ (115.4)	$ 149.1
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(373.5)	71.5
Unrealized gain (loss) on derivative instruments	(127.9)	(29.7)
Reclassification of derivative (gain) loss to income	0.0	0.1
Amortization of net prior service (benefit) cost and net actuarial (gain) loss to income	(1.3)	(0.6)
Ownership share of unconsolidated subsidiaries' other comprehensive income (loss)	0.7	1.0
Total other comprehensive income (loss), net of tax	(502.0)	42.3
Comprehensive income (loss)	(617.4)	191.4
Comprehensive (income) loss attributable to noncontrolling interests	1.3	2.1
Comprehensive income (loss) attributable to Molson Coors Beverage Company	(616.1)	193.5
Consolidated [Member]
Other comprehensive income (loss), net of tax:
Comprehensive income (loss) attributable to Molson Coors Beverage Company	$ (616.1)	$ 193.5