Nonpension Postretirement and Postemployment Benefits Assumptions (Details) - U.S. and Canada - Nonpension postretirement	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate, benefit obligation	4.30%	3.60%	4.00%
Discount rate, annual net periodic cost	3.60%	4.00%	4.20%
Long-term rate of return on plan assets	7.50%	8.50%	8.50%