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Pension and Other Post Retirement Benefits (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Sep. 27, 2012
Defined Benefit Plans [Member]
Mar. 29, 2012
Defined Benefit Plans [Member]
Mar. 28, 2013
Other Benefits [Member]
Mar. 29, 2012
Other Benefits [Member]
Mar. 28, 2013
U.K. pension plan [Member]
Mar. 28, 2013
Supplemental Executive Retirement Plan [Member]
Pension and Other Post-Retirement Benefits            
Service cost $ 1.9 $ 1.6 $ 0.7 $ 0.8    
Interest cost 11.7 11.3 0.6 0.9    
Expected return on plan assets (21.3) (18.7)        
Amortization of net (gain)/loss 3.1 1.8   0.1    
Net periodic pension income (4.6) (4.0) 1.3 1.8    
Pension And Other Post Retirement Benefits Textuals [Abstract]            
Defined Benefit Plan Estimated Future Employer Contributions Remainder Of Year         6.3 1.4
Expected UK Pension Plan Contribution For The Year         8.8  
UK Pension Plan Contributions Made Year To Date         $ 2.5