Retirement Benefit Plans (Net Periodic Benefit Cost and Weighted Average Assumptions) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 25, 2010	Dec. 26, 2009
Pension Benefits [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost and expenses	$ 10.3	$ 9.4	$ 7.5
Interest cost	9.9	10.0	9.7
Return on plan assets	(5.5)	(6.5)	(5.7)
Settlement/Curtailment	2.8	2.2	0
Employee contributions	(0.3)	0	0
Net deferral	3.9	3.2	4.0
Net periodic benefit cost	21.1	18.3	15.5
U.S. Pension Benefits [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost and expenses	1.1	1.0
Interest cost	2.6	2.6
Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate, net periodic benefit cost	4.70%	5.10%	5.80%
Expected return on plan assets	8.30%	8.30%	8.30%
Salary growth rate, net periodic benefit cost	5.00%	5.00%	5.00%
Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate, benefit obligations	3.70%	4.70%	5.10%
Salary growth rate, benefit obligations	3.00%	5.00%	5.00%
Foreign Pension Benefits [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost and expenses	9.2	8.4
Interest cost	7.3	7.4
Weighted Average Assumptions [Abstract]
Discount rate	3.90%	4.30%	5.00%
Return on plan assets	4.10%	4.40%	4.80%
Salary growth rate	3.10%	3.00%	3.10%
Postretirement Benefits [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost and expenses	0.1	0.1	0.1
Interest cost	1.7	1.8	2.5
Return on plan assets	0	0	0
Settlement/Curtailment	0	0	0
Employee contributions	0	0	0
Net deferral	(0.4)	(0.4)	(0.5)
Net periodic benefit cost	1.4	1.5	2.1
U.S. Postretirement Benefit [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost and expenses	0.1	0.1
Interest cost	$ 1.6	$ 1.8
Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate, net periodic benefit cost	5.00%	5.30%	5.80%
Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate, benefit obligations	4.00%	5.00%	5.30%