Acquisition of StarBev - Allocation of Consideration Transferred (Details) (USD $)	9 Months Ended					0 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Dec. 29, 2012	Jun. 15, 2012 Molson Coors Central Europe (MCCE)		Jun. 29, 2012 Molson Coors Central Europe (MCCE) Subordinated Deferred Payment Obligation, Including Interest and Other Costs [Member]	Jun. 15, 2012 Molson Coors Central Europe (MCCE) Subordinated Deferred Payment Obligation, Including Interest and Other Costs [Member]
Business Acquisition, Purchase Price Allocation
Cash and cash equivalents				$ 143,600,000
Current assets				263,500,000	[1]
Properties, net				571,700,000
Other intangibles, net				2,481,000,000	[2]
Other assets				36,700,000
Total assets acquired				3,496,500,000
Current liabilities				849,000,000	[3]
Non-current liabilities				456,100,000	[4]
Total liabilities assumed				1,305,100,000			423,400,000
Total identifiable net assets				2,191,400,000
Noncontrolling interest measured at fair value				40,600,000
Goodwill	2,415,300,000		2,453,100,000	896,100,000	[5]
Total purchase price				3,046,900,000
Business acquisition, assets assumed, net receivables				167,500,000
Business acquisition, assets assumed, inventory				57,300,000
Repayments of assumed debt	0	424,300,000				425,700,000
Deferred tax liabilities, noncurrent	$ 941,900,000		$ 948,500,000	$ 404,000,000

[1] Includes trade receivables of $167.5 million and inventory of $57.3 million.

[2] Includes the fair values of $145.6 million for brand intangibles with a 30 year useful life, $2,323.4 million for brand intangibles with an indefinite-life and a fair value of a favorable supply contract and other intangibles of $12.0 million with a 1.5 year useful life. See Note 11, "Goodwill and Intangible Assets" for further discussion of changes to intangible assets resulting from our annual goodwill and indefinite-lived intangible testing in the third quarter of 2013.

[3] Includes the $423.4 million subordinated deferred payment obligation assumed, which was subsequently repaid for $425.7 million on June 29, 2012.

[4] Includes $404.0 million of deferred tax liabilities.

[5] The goodwill resulting from the Acquisition is primarily attributable to Central Europe's licensed brand brewing, distribution and import business, anticipated synergies and the assembled workforce. We assigned the majority of the goodwill to our Europe reporting unit with a portion allocated to the Canada reporting unit resulting from synergies. The goodwill is not deductible for tax purposes. See Note 11, "Goodwill and Intangible Assets" for further discussion.