Postretirement Health Care (Narrative) (Details) - Other Postretirement Benefit Plan [Member]	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Defined Benefit Plan Disclosure [Line Items]
Discount rates at fiscal year-end	4.20%	3.80%	4.60%
Discount rate, used to determine net periodic benefit cost	4.20%