Investments Financials (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 30, 2013	Dec. 31, 2013
Equity Method Investment, Summarized Financial Information, Liabilities and Equity [Abstract]
Total equity	$ 8,624.7			$ 8,663.8
MillerCoors
Condensed balance sheets
Current assets	995.1			798.4
Noncurrent assets	8,958.7			8,989.3
Total assets	9,953.8			9,787.7
Current liabilities	933.4			950.1
Noncurrent liabilities	1,288.6			1,346.2
Total liabilities	2,222.0			2,296.3
Noncontrolling interests	20.9			20.7
Owners' equity	7,710.9			7,470.7
Total liabilities and equity	9,953.8			9,787.7
Equity Method Investment, Summarized Financial Information, Liabilities and Equity [Abstract]
Total equity	7,710.9			7,470.7
MCBC economic interest	42.00%		42.00%	42.00%
MCBC proportionate share of MillerCoors equity	3,238.6			3,137.7
Difference between MCBC contributed cost basis and proportional share of the underlying equity in net assets of MillerCoors	(665.1)	[1]		(666.2)	[1]
Investment in MillerCoors	2,608.5			2,506.5
Results of operations
Net sales	1,790.4		1,788.3
Cost of goods sold	(1,094.1)		(1,088.7)
Gross profit	696.3		699.6
Operating income	297.5		274.5
Net income attributable to MillerCoors	291.2		271.9
Special charges, restructuring	0
Parent [Member]
Equity Method Investment, Summarized Financial Information, Liabilities and Equity [Abstract]
Equity Method Investment, Difference From Accounting Policy Elections	$ 35.0			$ 35.0

[1] Our net investment in MillerCoors is based on the carrying values of the net assets contributed to the joint venture which is less than our proportionate share of underlying equity (42%) of MillerCoors (contributed by both Coors Brewing Company ("CBC") and Miller Brewing Company ("Miller")). This basis difference, with the exception of certain non-amortizing items (goodwill, land, etc.), is being amortized as additional equity income over the remaining useful lives of the contributed long-lived amortizing assets.