Segment Reporting Income (Loss) From Continuing Operations (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Segment Reporting
Amortization of Intangible Assets	$ 7.8		$ 15.5
Income (loss) from continuing operations before income taxes	93.5		169.6
Gain (Loss) Related to Litigation Settlement			13.0
Canada [Member]
Segment Reporting
Income (loss) from continuing operations before income taxes	30.9		88.3	[1]
U.S. [Member]
Segment Reporting
Income (loss) from continuing operations before income taxes	129.3		122.8
Europe [Member]
Segment Reporting
Income (loss) from continuing operations before income taxes	(4.1)	[2]	27.0	[2]
MCI [Member]
Segment Reporting
Income (loss) from continuing operations before income taxes	(5.4)		(3.0)
Corporate [Member]
Segment Reporting
Income (loss) from continuing operations before income taxes	(57.2)		(65.5)
Licensing Agreements [Member] | Canada [Member]
Segment Reporting
Amortization of Intangible Assets	0	[3]	4.9	[3]
Licensing Agreements [Member] | Europe [Member]
Segment Reporting
Amortization of Intangible Assets	11.8	[4]	0	[4]
Modelo [Member]
Segment Reporting
Termination fee income	$ 0	[3]	$ (63.2)	[3]

[1] Results for the three months ended March 31, 2014, include $63.2 million of income related to the termination of our Modelo Molson Imports, L.P. ("MMI") joint venture in Canada. See Note 4, "Investments" for further discussion.

[2] Results for the three months ended March 31, 2015, include $11.8 million of accelerated depreciation expense related to our decision to close one of our U.K. brewing facilities in the second quarter of 2015. See Note 6, "Special Items" for further discussion. Additionally, results for the three months ended March 31, 2014, include a gain of $13.0 million related to the release of an indirect-tax reserve, inclusive of accrued interest. See Note 15, "Commitments and Contingencies" for further discussion.

[3] Upon termination of our MMI operations in the first quarter of 2014, we recognized termination fee income and charges associated with the write-off of the definite-lived intangible asset associated with the joint venture. See Note 4, "Investments" for further discussion.

[4] In December 2013, we entered into an agreement with Heineken to early terminate our contract brewing and kegging agreement under which we produced and packaged the Foster's and Kronenbourg brands in the U.K. As a result of the termination, Heineken agreed to pay us an aggregate early termination payment of GBP 13.0 million, of which we received GBP 5.0 million ($8.5 million at payment date) in 2014 and the remaining GBP 8.0 million (approximately $12 million at payment date) on April 30, 2015. The full amount of the termination payment will be recognized as income within special items at the end of the transition period in the second quarter of 2015. Additionally, the termination of this distribution agreement led to a strategic review of our European supply chain network. As part of this analysis, we decided to close the Alton brewery in the U.K., which we anticipate to be completed during the second quarter of 2015. As a result of this anticipated closure, we incurred accelerated depreciation expense in excess of our normal depreciation associated with this brewery. We may incur additional charges associated with the closure of this brewery in 2015, which will also be recorded within special items.