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Pension, Postretirement and Postemployment Benefits, End of Fair Value Measurement (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 30, 2012
Dec. 25, 2011
Dec. 26, 2010
Defined Benefit And Other Postretirement Benefit Plans [Line Items]      
Fair value measurements, level 3 activity, purchases $ 5,000 $ 0  
International Plans
     
Expected benefit payments under defined benefit pension plans and postretirement benefit plan for next five years [Abstract]      
2013 1,874    
2014 2,068    
2015 2,248    
2016 2,400    
2017 2,674    
2018-2022 16,703    
Projected benefit obligation 107,366 82,904  
Fair value of plan assets 76,930 68,430  
Expected amortization of unrecognized transition obligation in next fiscal year 4    
Pension
     
Defined Benefit And Other Postretirement Benefit Plans [Line Items]      
Fair value measurements, level 3 activity, purchases 300    
Fair value measurement, level 3 activity, capital distributions 5,000    
Fair value measurement, level 3 activity, unrealized gain on plan assets still held 9,600    
Shared long-term total return goal on plan assets (in hundredths) 7.00% 7.25% 8.00%
Components of net periodic cost [Abstract]      
Service cost 1,784 1,729 2,018
Interest cost 16,669 16,852 17,014
Expected return on assets (18,097) (19,012) (19,503)
Amortization of prior service cost 157 198 198
Amortization of actuarial loss 6,221 4,624 4,026
Curtailment/settlement losses 672 0 0
Net periodic benefit cost 7,406 4,391 3,753
Assumptions used to determine net periodic benefit cost of pension plan and postretirement plan [Abstract]      
Weighted average discount rate (in hundredths) 4.96% 5.20% 5.73%
Long-term rate of return on plan assets (in hundredths) 7.00% 7.25% 8.00%
Expected benefit payments under defined benefit pension plans and postretirement benefit plan for next five years [Abstract]      
2013 20,864    
2014 21,164    
2015 21,509    
2016 21,688    
2017 22,556    
2018-2022 118,965    
Projected benefit obligation 391,681 346,155 333,512
Fair value of plan assets 273,575 265,075 270,145
Postretirement [Member]
     
Components of net periodic cost [Abstract]      
Service cost 735 685 609
Interest cost 1,758 1,764 1,795
Amortization of actuarial loss 80 67 0
Net periodic benefit cost 2,573 2,516 2,404
Assumptions used to determine net periodic benefit cost of pension plan and postretirement plan [Abstract]      
Weighted average discount rate (in hundredths) 5.17% 5.27% 5.75%
Health care cost trend rate assumed for next year (in hundredths) 7.00% 7.50% 8.00%
Rate to which the cost trend rate is assumed to decline (ultimate trend rate) (in hundredths) 5.00% 5.00% 5.00%
Year that the rate reaches the ultimate trend rate 2020 2020 2016
Effect of one percentage point increase in health care cost trend rate on accumulated postretirement benefit obligation and aggregate of benefits earned and interest cost (in hundredths) 3.00%    
Expected benefit payments under defined benefit pension plans and postretirement benefit plan for next five years [Abstract]      
2013 2,141    
2014 1,952    
2015 1,945    
2016 1,965    
2017 1,920    
2018-2022 9,459    
Projected benefit obligation 36,969 35,196 34,492
Fair value of plan assets $ 0 $ 0 $ 0