Investments Financials (Details) (MillerCoors, USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 26, 2011	Dec. 31, 2011
MillerCoors
Condensed balance sheets
Current assets	$ 997.4			$ 810.9
Noncurrent assets	8,881.2			8,861.7
Total assets	9,878.6			9,672.6
Current liabilities	875.5			922.7
Noncurrent liabilities	1,421.9			1,471.3
Total liabilities	2,297.4			2,394.0
Noncontrolling interests	42.1			36.7
Owners' equity	7,539.1			7,241.9
Total liabilities and equity	9,878.6			9,672.6
Results of operations
Net sales	1,759.8	1,699.1
Cost of goods sold	(1,070.0)	(1,063.0)
Gross profit	689.8	636.1
Operating income	279.0	238.7
Net income attributable to MillerCoors	$ 275.3	$ 234.7	$ 234.7
Equity Method Investment, Ownership Percentage	42.00%		42.00%