Pension, Postretirement and Postemployment Benefits (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 30, 2012	Dec. 25, 2011	Dec. 26, 2010
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension expense	$ 40,300	$ 35,500	$ 34,900
Pension expense related to defined contribution plans	29,500	28,500	29,000
Defined benefit plan, number of major plans which principally cover non-union employees	2
Defined benefit plan, number of major plans that are funded	1
Postretirement health care and life insurance benefits eligibility terms	age 65 with 5 years of service or age 55 with 10 years of service
International Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension expense	3,458	2,758	2,333
Change in Projected Benefit Obligation [Roll Forward]
Projected benefit obligation - beginning	82,904
Projected benefit obligation - ending	107,366	82,904
Change in Plan Assets [Roll Forward]
Fair value of plan assets - beginning	68,430
Fair value of plan assets - ending	76,930	68,430
Reconciliation of Funded Status [Abstract]
Projected benefit obligation	(107,366)	(82,904)
Fair value of plan assets	76,930	68,430
Expected amortization of unrecognized net losses in next fiscal year	1,614
Expected amortization of unrecognized prior service cost in next fiscal year	3
Pension
Change in Projected Benefit Obligation [Roll Forward]
Projected benefit obligation - beginning	346,155	333,512
Service cost	1,784	1,729	2,018
Interest cost	16,669	16,852	17,014
Actuarial loss (gain)	54,428	14,845
Curtailment	486	0
Benefits paid	(25,795)	(19,596)
Expenses paid	(2,046)	(1,187)
Projected benefit obligation - ending	391,681	346,155	333,512
Accumulated benefit obligation - ending	391,681	346,155
Change in Plan Assets [Roll Forward]
Fair value of plan assets - beginning	265,075	270,145
Actual return on plan assets	32,613	11,914
Employer contribution	3,728	3,799
Benefits paid	(25,795)	(19,596)
Expenses paid	(2,046)	(1,187)
Fair value of plan assets - ending	273,575	265,075	270,145
Reconciliation of Funded Status [Abstract]
Projected benefit obligation	(391,681)	(346,155)	(333,512)
Fair value of plan assets	273,575	265,075	270,145
Funded status	(118,106)	(81,080)
Unrecognized net loss	138,946	104,872
Unrecognized prior service cost	0	725
Net amount recognized	20,840	24,517
Accrued liabilities	(2,982)	(3,020)
Other liabilities	(115,124)	(78,060)
Accumulated other comprehensive earnings	138,946	105,597
Expected amortization of unrecognized net losses in next fiscal year	8,874
Expected amortization of unrecognized prior service cost in next fiscal year	100
Assumptions used to determine year-end pension and postretirement benefit obligations [Abstract]
Weighted average discount rate (in hundredths)	4.09%	4.96%
Mortality table	RP-2000/IRS Static Basis	RP-2000
Pension | Funded [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Projected benefit obligations in excess of the fair value of the plans' assets	77,205	43,522
Pension | Unfunded [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Projected benefit obligations in excess of the fair value of the plans' assets	40,901	37,559
Postretirement [Member]
Change in Projected Benefit Obligation [Roll Forward]
Projected benefit obligation - beginning	35,196	34,492
Service cost	735	685	609
Interest cost	1,758	1,764	1,795
Actuarial loss (gain)	1,403	314
Curtailment	0	0
Benefits paid	(2,123)	(2,059)
Expenses paid	0	0
Projected benefit obligation - ending	36,969	35,196	34,492
Accumulated benefit obligation - ending	36,969	35,196
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	(36,969)	(35,196)	(34,492)
Fair value of plan assets	0	0	0
Funded status	(36,969)	(35,196)
Unrecognized net loss	5,673	4,321
Unrecognized prior service cost	215	244
Net amount recognized	(31,081)	(30,631)
Accrued liabilities	(2,200)	(2,400)
Other liabilities	(34,769)	(32,796)
Accumulated other comprehensive earnings	5,888	4,565
Expected amortization of unrecognized net losses in next fiscal year	127
Expected amortization of unrecognized prior service cost in next fiscal year	$ 29
Assumptions used to determine year-end pension and postretirement benefit obligations [Abstract]
Weighted average discount rate (in hundredths)	4.17%	5.17%
Health care cost trend rate assumed for next year (in hundredths)	7.00%	7.00%
Rate to which the cost trend rate is assumed to decline (ultimate trend rate) (in hundredths)	5.00%	5.00%
Year that the rate reaches the ultimate trend	2020	2020