Segment Reporting Income (Loss) From Continuing Operations (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 25, 2011		Jun. 30, 2012		Jun. 25, 2011
Segment Reporting
Income (loss) from continuing operations before income taxes	$ 123.8		$ 268.5		$ 220.4		$ 367.0
Canada
Segment Reporting
Income (loss) from continuing operations before income taxes	139.9		131.8		183.8		184.0
U.S.
Segment Reporting
Income (loss) from continuing operations before income taxes	185.6		171.8		304.5		273.0
Central Europe
Segment Reporting
Income (loss) from continuing operations before income taxes	12.4	[1]	0	[1]	12.4	[1]	0	[1]
U.K.
Segment Reporting
Income (loss) from continuing operations before income taxes	16.3		32.3		17.6		39.1
MCI
Segment Reporting
Income (loss) from continuing operations before income taxes	(24.3)		(10.6)		(32.9)		(18.0)
Corporate
Segment Reporting
Income (loss) from continuing operations before income taxes	$ (206.1)		$ (56.8)		$ (265.0)		$ (111.1)

[1] Represents Central Europe income from continuing operations before income taxes from the Acquisition date of June 15, 2012 through June 30, 2012.