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Performance Contingent TSR Shares (Detail) - Total Shareholders Return - EPIP - $ / shares
shares in Thousands
12 Months Ended
Jan. 02, 2016
Jan. 03, 2015
Grant Date Fourth January Twenty Sixteen    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares granted 401  
Vesting date Feb. 21, 2018  
Fair value per share $ 24.17  
Grant Date Fourth January Twenty Fifteen    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares granted   414
Vesting date   Mar. 01, 2017
Fair value per share   $ 21.21