Financing Obligations (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 25, 2010
Long-term Debt and Capital Lease Obligations [Abstract]
Borrowings outstanding	$ 610.9	$ 428.7
Less current portion	(195.7)	(1.9)
Long-term debt	415.2	426.8
Short-term Debt [Abstract]
Total short-term borrowings at year-end	193.4	0
Weighted average interest rate at year-end	3.00%
Average short-term borrowings during the year	166.1	125.2
Short-term Debt, Weighted Average Interest Rate for Year	2.10%	1.60%
Maximum short-term borrowings during the year	425.2	188.6
2007 Term Loan Facility due 2012 [Member]
Long-term Debt and Capital Lease Obligations [Abstract]
Borrowings outstanding	0	405.0
Fixed Rate Senior Notes due 2021 [Member]
Long-term Debt and Capital Lease Obligations [Abstract]
Borrowings outstanding	396.1	0
Five Year Credit Agreement Expiring 2016 [Member]
Short-term Debt [Abstract]
Total short-term borrowings at year-end	192.3	0
Belgium Facility Capital Lease [Member]
Long-term Debt and Capital Lease Obligations [Abstract]
Borrowings outstanding	20.5	22.3
Other [Member]
Long-term Debt and Capital Lease Obligations [Abstract]
Borrowings outstanding	$ 2.0	$ 1.4