Investments Financials (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended						9 Months Ended
	Sep. 30, 2011		Sep. 24, 2011	Sep. 30, 2010		Sep. 25, 2010	Sep. 30, 2011		Sep. 24, 2011	Sep. 30, 2010		Sep. 25, 2010	Dec. 31, 2010
MillerCoors
Condensed balance sheets
Current assets	$ 960.7						$ 960.7						$ 815.9
Noncurrent assets	8,790.0						8,790.0						8,972.1
Total assets	9,750.7						9,750.7						9,788.0
Current liabilities	912.6						912.6						932.9
Noncurrent liabilities	1,254.2						1,254.2						1,273.4
Total liabilities	2,166.8						2,166.8						2,206.3
Noncontrolling interests	33.2						33.2						30.5
Owners' equity	7,550.7						7,550.7						7,551.2
Total liabilities and equity	9,750.7						9,750.7						9,788.0
Results of operations
Net sales	1,964.9			2,015.9			5,796.3			5,850.9
Cost of goods sold	(1,213.3)			(1,226.7)			(3,545.1)			(3,590.1)
Gross profit	751.6			789.2			2,251.2			2,260.8
Operating income	179.2	[1]		320.8	[1]		824.3	[1]		930.1	[1]
Net income attributable to MillerCoors	$ 176.4	[1]	$ 176.4	$ 313.0	[1]	$ 313.0	$ 809.8	[1]	$ 809.8	$ 912.8	[1]	$ 912.8
Equity Method Investment, Ownership Percentage			42.00%			42.00%			42.00%			42.00%
Sparks [Member]
Results of operations
Equity Method Investment, Ownership Percentage			42.00%						42.00%

[1] Results for three months and nine months ended September 30, 2011, include special charges of $60.0 million for a write-down in the value of the Sparks brand and a $50.9 million charge resulting from the planned assumption of the Milwaukee Brewery Worker's Pension Plan, an under-funded multi-employer pension plan.