Investments Variable Interest Entity (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 29, 2012		Sep. 24, 2011		Sep. 29, 2012		Sep. 24, 2011		Dec. 31, 2011
Variable Interest Entity
Assets	$ 16,466.5				$ 16,466.5				$ 12,423.8
Revenues	1,195.5		954.4		2,886.3		2,578.4
Income tax expense	243.2		225.4		463.6		592.4
Grolsch
Variable Interest Entity
Assets	13.4				13.4				20.4
Revenues	6.5	[1]	6.8	[1]	18.1	[1]	19.7	[1]
Income tax expense	0.9	[1]	1.0	[1]	2.6	[1]	2.8	[1]
Cobra
Variable Interest Entity
Assets	30.1				30.1				31.6
Revenues	11.7		10.1		30.7		28.7
Income tax expense	$ 1.5		$ 1.7		$ 3.6		$ 4.8

[1] Substantially all such sales for Grolsch are made to us and as such, are eliminated upon consolidation.