Pension, Postretirement and Postemployment Benefits, End of Fair Value Measurement (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017	Dec. 25, 2016
Equity - Other [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Investments for which the fair value is measured using net asset value per share	300
Cash Equivalents [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Investments for which the fair value is measured using net asset value per share	105,600
International Plans [Member]
Expected benefit payments under defined benefit pension plans and postretirement benefit plan for next five years [Abstract]
2019	$ 1,774
2020	1,958
2021	2,072
2022	2,279
2023	2,531
2024-2028	15,337
Projected benefit obligation	98,476	$ 127,012
Fair value of plan assets	78,184	$ 100,766
Expected amortization of unrecognized transition obligation in next fiscal year	$ 2
Pension [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Shared long-term total return goal on plan assets	4.75%	6.25%	6.75%
Components of net periodic cost [Abstract]
Service cost	$ 1,300	$ 1,290	$ 2,100
Interest cost	13,358	15,303	16,106
Expected return on assets	(18,475)	(19,534)	(17,013)
Amortization of prior service cost	0	0	0
Amortization of actuarial loss	10,995	9,082	7,361
Curtailment/settlement losses	0	0	0
Net periodic benefit cost	$ 7,178	$ 6,141	$ 8,554
Assumptions used to determine net periodic benefit cost of pension plan and postretirement plan [Abstract]
Weighted average discount rate	3.71%	4.22%	4.58%
Long-term rate of return on plan assets	4.75%	6.25%	6.75%
Expected benefit payments under defined benefit pension plans and postretirement benefit plan for next five years [Abstract]
2019	$ 368,278
2020	2,465
2021	2,434
2022	2,410
2023	2,420
2024-2028	11,634
Postretirement [Member]
Components of net periodic cost [Abstract]
Service cost	756	$ 691	$ 532
Interest cost	1,171	1,179	1,175
Amortization of actuarial loss	(165)	0	0
Curtailment/settlement losses	0	0	0
Net periodic benefit cost	$ 2,092	$ 1,870	$ 1,707
Assumptions used to determine net periodic benefit cost of pension plan and postretirement plan [Abstract]
Weighted average discount rate	3.74%	4.26%	4.64%
Health care cost trend rate assumed for next year	6.50%	7.00%	7.00%
Rate to which the cost trend rate is assumed to decline (ultimate trend rate)	5.00%	5.00%	5.00%
Year that the rate reaches the ultimate trend rate	2024	2021	2021
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	0.70%
Expected benefit payments under defined benefit pension plans and postretirement benefit plan for next five years [Abstract]
2019	$ 1,641
2020	1,594
2021	1,548
2022	1,510
2023	1,472
2024-2028	$ 7,031