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Employee Benefit Plans - Weighted-Average Health Care Cost Trend Rates (Details) - Other Benefits
12 Months Ended
Jan. 02, 2016
Jan. 03, 2015
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Healthcare cost trend rate assumed for next year 8.00% 8.00%
Ultimate healthcare cost trend rate 8.00% 8.00%
Year assumed rate reaches ultimate rate 2015 2014