Employee Retirement Plans Estimated Future Benefit Payments under the Plans (Details) $ in Thousands	Dec. 29, 2018 USD ($)
USPlans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	$ 600
2019	1,686
2020	1,704
2021	1,741
2022	1,755
2023 through 2028	11,055
Non US Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	6,200
2019	59,200
2020	61,498
2021	62,360
2022	64,772
2023 through 2028	$ 393,112