CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 30, 2013
Net income (loss) including noncontrolling interests	$ 162.9	$ 29.9
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(182.0)	(280.7)
Unrealized gain (loss) on derivative instruments	14.5	13.1
Reclassification of derivative (gain) loss to income	(3.2)	0.1
Pension and other postretirement benefit adjustments	0	2.4
Amortization of net prior service (benefit) cost and net actuarial (gain) loss to income	7.6	10.6
Ownership share of unconsolidated subsidiaries' other comprehensive income (loss)	1.6	(6.7)
Total other comprehensive income (loss), net of tax	(161.5)	(261.2)
Comprehensive income (loss)	1.4	(231.3)
Less: Comprehensive (income) loss attributable to noncontrolling interests	(0.5)	1.4
Comprehensive income (loss) attributable to Molson Coors Brewing Company	$ 1.9	$ (232.7)