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Pension, Postretirement and Postemployment Benefits (Details)
$ in Thousands
12 Months Ended
Dec. 30, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 25, 2016
USD ($)
Dec. 30, 2018
USD ($)
Dec. 31, 2017
USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]          
Pension expense $ 41,900 $ 45,900 $ 45,200    
Pension expense related to defined contribution plans $ 32,300 36,000 33,300    
Defined benefit plan, number of major plans which principally cover non-union employees       2  
Assumptions used to determine year-end pension and postretirement benefit obligations [Abstract]          
Defined benefit plan, number of major plans that are funded       1  
Defined Benefit Plan Plan Amendment [Abstract]          
Date Of Resolution Approval Plan Termination February 2018        
United States [Member]          
Defined Benefit Plan Plan Amendment [Abstract]          
Defined benefit plan accumulated benefit obligation increase decrease for plan amendment $ 35,192        
Unrecognized losses, U.S. pension plan, remaining in accumulated other comprehensive loss       $ 142,439  
Pension [Member]          
Assumptions used to determine year-end pension and postretirement benefit obligations [Abstract]          
Weighted average discount rate       3.72% 3.71%
Change in Projected Benefit Obligation [Roll Forward]          
Service cost 1,300 1,290 2,100    
Interest cost 13,358 15,303 16,106    
Reconciliation of Funded Status [Abstract]          
Expected amortization of unrecognized net losses in next fiscal year       $ 12,116  
Pension [Member] | International Plans[Member]          
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]          
Pension expense 2,392 3,473 1,533    
Reconciliation of Funded Status [Abstract]          
Expected amortization of unrecognized net losses in next fiscal year       965  
Expected amortization of unrecognized prior service cost in next fiscal year       (34)  
Pension [Member] | United States [Member]          
Change in Projected Benefit Obligation [Roll Forward]          
Projected benefit obligation - beginning 393,367 372,824      
Service cost 1,300 1,290      
Interest cost 13,358 15,303      
Actuarial (gain) loss 13,010 27,670      
Curtailment 0 0      
Plan amendment (78) 0      
Benefits paid 22,718 22,579      
Expenses paid 2,521 1,141      
Projected benefit obligation - ending 395,718 393,367 372,824    
Accumulated benefit obligation - ending       395,718 $ 393,367
Change in Plan Assets [Roll Forward]          
Fair value of plan assets - beginning 382,989 309,380      
Actual return on plan assets (3,328) 44,562      
Employer contribution 2,802 52,767      
Benefits paid (22,718) (22,579)      
Expenses paid (2,521) (1,141)      
Fair value of plan assets - ending 357,224 382,989 309,380    
Reconciliation of Funded Status [Abstract]          
Projected benefit obligation (395,718) (372,824) (372,824) (395,718) (393,367)
Fair value of plan assets $ 382,989 $ 382,989 309,380 357,224 382,989
Funded status       (38,494) (10,378)
Unrecognized net loss (gain)       155,829 132,088
Unrecognized prior service cost       0 0
Net amount recognized       117,335 121,710
Accrued liabilities       (8,946) (2,448)
Other liabilities       (29,548) (7,930)
Accumulated other comprehensive earnings (loss)       $ 155,829 $ 132,088
Defined Benefit Plan Plan Amendment [Abstract]          
Weighted Average Discount Rate, Defined Benefit Plan, Plan Amendment       3.20% 3.70%
Pension [Member] | United States [Member] | Funded [Member]          
Assumptions used to determine year-end pension and postretirement benefit obligations [Abstract]          
Projected benefit obligations in excess of the fair value of the plans' assets       $ 6,423 $ 25,603
Pension [Member] | United States [Member] | Unfunded [Member]          
Assumptions used to determine year-end pension and postretirement benefit obligations [Abstract]          
Projected benefit obligations in excess of the fair value of the plans' assets       $ 32,072 $ 35,981
Postretirement [Member]          
Assumptions used to determine year-end pension and postretirement benefit obligations [Abstract]          
Weighted average discount rate       4.33% 3.74%
Health care cost trend rate assumed for next year 6.50% 6.50%      
Rate to which the cost trend rate is assumed to decline (ultimate trend rate) 5.00% 5.00%      
Year that the rate reaches the ultimate trend 2024 2024      
Change in Projected Benefit Obligation [Roll Forward]          
Service cost $ 756 $ 691 532    
Interest cost 1,171 1,179 1,175    
Reconciliation of Funded Status [Abstract]          
Expected amortization of unrecognized net losses in next fiscal year       $ 21  
Postretirement [Member] | United States [Member]          
Change in Projected Benefit Obligation [Roll Forward]          
Projected benefit obligation - beginning 32,153 28,484      
Service cost 756 691      
Interest cost 1,171 1,179      
Actuarial (gain) loss (2,339) 3,432      
Curtailment 0 0      
Plan amendment 0 0      
Benefits paid 1,660 1,633      
Expenses paid 0 0      
Projected benefit obligation - ending 30,081 32,153 28,484    
Accumulated benefit obligation - ending       30,081 $ 32,153
Change in Plan Assets [Roll Forward]          
Fair value of plan assets - beginning 0 0      
Actual return on plan assets 0 0      
Employer contribution 0 0      
Benefits paid 0 0      
Expenses paid 0 0      
Fair value of plan assets - ending 0 0 0    
Reconciliation of Funded Status [Abstract]          
Projected benefit obligation (32,153) (32,153) (28,484) (30,081) (32,153)
Fair value of plan assets $ 0 $ 0 $ 0 0 0
Funded status       (30,081) (32,153)
Unrecognized net loss (gain)       3,350 5,853
Unrecognized prior service cost       0 0
Net amount recognized       (26,731) (26,300)
Accrued liabilities       (1,607) (1,630)
Other liabilities       (28,474) (30,523)
Accumulated other comprehensive earnings (loss)       $ 3,350 $ 5,853