Other Income and Expense (Details) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended				6 Months Ended				3 Months Ended				6 Months Ended				3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended			3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 29, 2013	Jun. 30, 2014	Jun. 29, 2013	Jun. 30, 2014 Other Foreign Exchange and Derivative Activity [Member]	Jun. 29, 2013 Other Foreign Exchange and Derivative Activity [Member]	Jun. 30, 2014 Other Foreign Exchange and Derivative Activity [Member]	Jun. 29, 2013 Other Foreign Exchange and Derivative Activity [Member]	Jun. 30, 2014 Sale of Non-operating Asset [Member]		Jun. 29, 2013 Sale of Non-operating Asset [Member]		Jun. 30, 2014 Sale of Non-operating Asset [Member]		Jun. 29, 2013 Sale of Non-operating Asset [Member]		Jun. 30, 2014 Other Foreign Exchange and Derivative Activity [Member]		Jun. 29, 2013 Other Foreign Exchange and Derivative Activity [Member]		Jun. 30, 2014 Other Foreign Exchange and Derivative Activity [Member]		Jun. 29, 2013 Other Foreign Exchange and Derivative Activity [Member]		Jun. 30, 2014 Other income (expense), net [Member]	Jun. 29, 2013 Other income (expense), net [Member]	Jun. 30, 2014 Other income (expense), net [Member]	Jun. 29, 2013 Other income (expense), net [Member]	Mar. 30, 2013 Molson Coors Central Europe (MCCE) Other Foreign Exchange and Derivative Activity [Member]	Jun. 30, 2014 Molson Coors Central Europe (MCCE) Other Foreign Exchange and Derivative Activity [Member]	Jun. 29, 2013 Molson Coors Central Europe (MCCE) Other Foreign Exchange and Derivative Activity [Member]	May 03, 2012 Senior Notes [Member]	Mar. 30, 2013 StarBev L.P. [Member] Foreign Cash Positions and Foreign Exchange Contracts [Member]	Jun. 29, 2013 StarBev L.P. [Member] Foreign Cash Positions and Foreign Exchange Contracts [Member]
Other income and expense:
Debt instrument, face amount																																$ 1,900,000,000
Other income (expense), net	700,000	(7,300,000)	1,500,000	(3,000,000)					0	[1]	0	[1]	0	[1]	1,200,000	[1]	500,000	[2]	(8,800,000)	[2]	1,300,000	[2]	(6,100,000)	[2]	200,000	1,500,000	200,000	1,900,000
Loss on foreign currency movements																													(10,100,000)	500,000	10,000,000
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments																																	3,900,000	(6,700,000)
Loss on derivatives, recognized in income					$ 500,000	$ (2,600,000)	$ 800,000	$ (9,400,000)

[1] During the first quarter of 2013, we realized a gain for proceeds received related to a non-income-related tax settlement resulting from historical activity within our former investment in the Montréal Canadiens.

[2] Included in this amount are gains of $0.5 million for the six months ended June 30, 2014, and unrealized losses of $10.1 million and gains of $10.0 million for the three and six months ended June 29, 2013, respectively, related to foreign currency movements on foreign-denominated financing instruments entered into in conjunction with the closing of the Acquisition. These amounts were partially offset by unrealized gains of $3.9 million and losses of $6.7 million for the three and six months ended June 29, 2013, respectively, related to foreign cash positions and foreign exchange contracts entered into to hedge our risk associated with payments of this foreign-denominated debt. Additionally, we recorded net gains of $0.5 million and $0.8 million related to other foreign exchange and derivative activity during the three and six months ended June 30, 2014, respectively. We recorded net losses related to other foreign exchange and derivative activity of $2.6 million and $9.4 million for the three and six months ended June 29, 2013, respectively.