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Plan Asset and Target Asset Allocations (Detail)
12 Months Ended
Jan. 02, 2016
Jan. 03, 2015
Schedule of Defined Benefit Plan Asset Allocation Targets [Line Items]    
Percentage of Plan Assets at the Measurement Date 100.00% 100.00%
Equity Securities    
Schedule of Defined Benefit Plan Asset Allocation Targets [Line Items]    
Target Allocation 2015, Minimum 40.00%  
Target Allocation 2015, Maximum 60.00%  
Percentage of Plan Assets at the Measurement Date 55.60% 55.00%
Fixed Income Securities    
Schedule of Defined Benefit Plan Asset Allocation Targets [Line Items]    
Target Allocation 2015, Minimum 10.00%  
Target Allocation 2015, Maximum 40.00%  
Percentage of Plan Assets at the Measurement Date 10.00% 7.10%
Real Estate Funds    
Schedule of Defined Benefit Plan Asset Allocation Targets [Line Items]    
Target Allocation 2015, Minimum 0.00%  
Target Allocation 2015, Maximum 25.00%  
Percentage of Plan Assets at the Measurement Date 4.70% 3.90%
Other Diversifying Strategies    
Schedule of Defined Benefit Plan Asset Allocation Targets [Line Items]    
Target Allocation 2015, Minimum [1] 0.00%  
Target Allocation 2015, Maximum [1] 40.00%  
Percentage of Plan Assets at the Measurement Date [1] 28.70% 33.20%
Short Term Investments And Cash    
Schedule of Defined Benefit Plan Asset Allocation Targets [Line Items]    
Target Allocation 2015, Minimum 0.00%  
Target Allocation 2015, Maximum 25.00%  
Percentage of Plan Assets at the Measurement Date 1.00% 0.80%
[1] Includes absolute return funds, hedged equity funds, and guaranteed insurance contracts.