Acquisition of Molson Coors Central Europe - Allocation of Consideration Transferred (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended			0 Months Ended		3 Months Ended	0 Months Ended
	Sep. 29, 2012	Sep. 24, 2011	Dec. 31, 2011	Jun. 15, 2012 Molson Coors Central Europe (MCCE)		Sep. 29, 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 [Line Items]
Goodwill, Allocation Adjustment						$ 69
Business Acquisition, Purchase Price Allocation
Cash and cash equivalents				143.6
Current assets				260.9	[1]
Properties, net				582.0
Other intangibles, net				2,430.8	[2]
Other assets				41.0
Total assets acquired				3,458.3
Current liabilities				847.6	[3]
Non-current liabilities				423.3	[4]
Total liabilities assumed				1,270.9				423.4	[5]
Total identifiable net assets				2,187.4
Noncontrolling interest measured at fair value				40.6
Goodwill	2,415.6		1,453.3	900.1	[6]
Total purchase price				3,046.9
Business acquisition, assets assumed, net receivables				152.2
Business acquisition, assets assumed, inventory				57.3
Repayments of assumed debt	424.3	0					425.7
Deferred tax liabilities, noncurrent	$ 903.6		$ 455.6	$ 403.4

[1] Includes trade receivables of $152.2 million and inventory of $57.3 million.

[2] See Note 12, "Goodwill and Intangible Assets" for further discussion.

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

[4] Includes $403.4 million of deferred tax liabilities.

[5] We assumed the pre-existing StarBev $423.4 million SDPO payable to third-party creditors, which we subsequently repaid on June 29, 2012, in accordance with the terms of the SDPO agreement. The SDPO was held by private investors and accrued interest at 11%. The settlement of the SDPO was not required by our agreement with the Seller.

[6] The goodwill resulting from the Acquisition is primarily attributable to MCCE's licensed brand brewing, distribution and import business, anticipated synergies and the assembled workforce. We have preliminarily assigned the majority of the goodwill to our Central Europe reporting unit with a portion allocated to the U.K. and Canada reporting units resulting from synergies. The goodwill is not expected to be deductible for tax purposes. See Note 12, "Goodwill and Intangible Assets" for further discussion.