Investments Transactions with MillerCoors (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2011	Dec. 29, 2012 MillerCoors	Dec. 31, 2013 MillerCoors
Schedule of Equity Method Investments [Line Items]
Beer sales to MillerCoors	$ 16.6	$ 28.2	$ 18.9
Beer purchases from MillerCoors	19.2	11.5	13.1
Service agreement costs and other charges to MillerCoors	2.5	6.0	3.7
Service agreement costs and other charges from MillerCoors	1.1	1.3	1.2
Net payables due to affiliate				4.4
Net receivables due from affiliate			0.8
Undistributed Earnings, Basic			$ 0