Retirement and Post Retirement Health Care Plans (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016	Dec. 28, 2019
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employer Contributions	$ 10,900,000	$ 8,600,000
Accumulated benefit obligation	$ 244,000,000	$ 251,700,000
Defined benefit plan compensation increase assumption	3.00%	3.00%
Expected contribution to defined benefit pension plans	$ 10,400,000
Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employer Contributions	10,900,000	$ 8,600,000
Future amortization of prior service cost	300,000
Amount to be amortized	2,200,000
Amortization of prior service cost recognized in OCI	$ 200,000	$ 200,000	$ 200,000
Discount Rate	4.40%	3.80%
Postretirement Health Coverage
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employer Contributions	$ 600,000	$ 900,000
Amount to be amortized	400,000
Expected contribution to defined benefit pension plans	700,000
Amortization of prior service cost recognized in OCI	$ 0
Discount Rate	4.20%	3.50%
Health care cost trend rate, 2025	4.50%
Postretirement Health Coverage | Forecast
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Health care cost trend rate, 2025				4.50%
Minimum | Postretirement Health Coverage
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Health care cost trend rate, next fiscal year	8.00%
Minimum | Postretirement Health Coverage | Forecast
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Health care cost trend rate, next fiscal year				7.60%
Maximum | Postretirement Health Coverage
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Health care cost trend rate, next fiscal year	5.40%
Maximum | Postretirement Health Coverage | Forecast
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Health care cost trend rate, next fiscal year				5.30%
United States
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employer Contributions	$ 10,100,000	$ 9,300,000	8,700,000
International Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employer Contributions	$ 11,800,000	$ 9,400,000	$ 10,400,000