v2.4.0.8
Pension and Postretirement Benefit Plans Health Care Trends (Details) (Canadian Benefit Plans)
12 Months Ended
Dec. 28, 2013
Dec. 29, 2012
Canadian Benefit Plans
   
Defined Benefit Plan Disclosure [Line Items]    
Weighted average health care cost trend rate assumed for next year 6.44% 6.42%
Rate to which the cost trend is expected to decline (the ultimate trend rate) 4.50% 4.50%
Year that the rate reached the ultimate trend rate 2028 2028