v3.3.1.900
Pensions and Other Benefit Plans (Details 2)
 12 Months Ended
Jan. 03, 2016
Dec. 28, 2014
Dec. 29, 2013
Retirement Plans [Member]      
Weighted average assumptions used in calculating net periodic benefit cost      
Discount rate assumption NPBC 3.78% 4.78% 4.25%
Rate of increase in compensation levels NPBC 4.05% 4.08% 4.08%
Expected long-term rate of return on plan assets assumption NPBC 8.53% 8.46% 8.45%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]      
Discount rate assumption benefit obligation 4.11% 3.78% 4.78%
Rate of compensation increase benefit obligation 4.01% 4.05% 4.08%
Other Benefit Plans [Member]      
Weighted average assumptions used in calculating net periodic benefit cost      
Discount rate assumption NPBC 4.31% 5.25% 4.55%
Rate of increase in compensation levels NPBC 4.11% 4.29% 4.28%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]      
Discount rate assumption benefit obligation 4.63% 4.31% 5.25%
Rate of compensation increase benefit obligation 4.28% 4.11% 4.29%