CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net income (loss) including noncontrolling interests	$ 1,134.6	$ 1,587.8	$ 1,599.8
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(359.0)	686.7	(234.4)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax	6.0	0.0	0.0
Unrealized gain (loss) on derivative and non-derivative financial instruments	10.9	(133.4)	9.7
Reclassification of derivative (gain) loss to income	2.5	1.3	(3.0)
Pension and other postretirement benefit adjustments	43.5	145.7	53.8
Other Comprehensive Income (Loss), Amortization of Net Prior Service Costs and Net Actuarial Losses, Net of Tax	4.9	3.6	22.8
Reclassification of historical share of MillerCoors' AOCI loss	0.0	0.0	258.2
Ownership share of unconsolidated subsidiaries' other comprehensive income (loss)	(0.8)	10.4	22.3
Total other comprehensive income (loss), net of tax	(292.0)	714.3	129.4
Comprehensive income (loss)	842.6	2,302.1	1,729.2
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	(16.1)	(24.7)	(3.0)
Net (income) loss attributable to noncontrolling interests	(18.1)	(22.2)	(5.9)
Comprehensive income (loss) attributable to Molson Coors Brewing Company	826.5	2,277.4	1,726.2
As Restated
Other comprehensive income (loss), net of tax:
Total other comprehensive income (loss), net of tax	$ (292.0)	$ 714.3	$ 129.4