Investments Variable Interest Entity (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012		Mar. 26, 2011		Dec. 31, 2011
Variable Interest Entity
Assets	$ 12,436.2				$ 12,423.8
Revenues	691.4		690.4
Pre-tax income	96.6		98.5
Grolsch
Variable Interest Entity
Assets	22.9				20.4
Revenues	5.3	[1]	5.2	[1]
Pre-tax income	0.8	[1]	0.7	[1]
Cobra
Variable Interest Entity
Assets	32.7				31.6
Revenues	8.2		8.3
Pre-tax income	$ 0.4		$ 1.0

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