Segment Reporting Net Sales (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
Segment Reporting
Net sales	$ 1,195.5		$ 954.4		$ 2,886.3		$ 2,578.4
Maximum percentage of sales accounted for by a single customer (as a percent)					10.00%
Canada [Member]
Segment Reporting
Net sales	580.1		598.9		1,565.3		1,557.4
Central Europe
Segment Reporting
Net sales	264.2	[1]	0	[1]	321.5	[1]	0	[1]
U.K. [Member]
Segment Reporting
Net sales	313.5		327.2		903.1		943.6
MCI
Segment Reporting
Net sales	43.0		31.1		108.2		80.9
Corporate
Segment Reporting
Net sales	0.2		0.4		0.9		1.0
Intersegment sales elimination
Segment Reporting
Net sales	$ (5.5)	[2]	$ (3.2)	[2]	$ (12.7)	[2]	$ (4.5)	[2]

[1] Net sales for the thirty-nine weeks ended September 29, 2012, for Central Europe represents activity from the Acquisition date of June 15, 2012.

[2] Represents inter-segment sales from the U.K. segment to the MCI segment.