Segment Reporting Total Assets (Details) (USD $) In Millions, unless otherwise specified	Sep. 28, 2013	Dec. 29, 2012
Segment Reporting Information [Line Items]
Total assets	$ 15,772.8	$ 16,212.2
Canada [Member]
Segment Reporting Information [Line Items]
Total assets	6,196.6	6,547.1
U.S.
Segment Reporting Information [Line Items]
Total assets	2,541.9	2,431.8
Europe [Member]
Segment Reporting Information [Line Items]
Total assets	6,708.1	6,742.4
MCI
Segment Reporting Information [Line Items]
Total assets	76.8	92.0
Corporate
Segment Reporting Information [Line Items]
Total assets	$ 249.4	$ 398.9