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Stock-Based Compensation - Restricted Stock Awards and Restricted Stock Units (Details) - $ / shares
Jul. 29, 2015
Feb. 18, 2015
Jan. 02, 2015
Jul. 30, 2014
Feb. 19, 2014
Jan. 02, 2014
Performance Stock Units (PSUs) [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares awarded (shares)   175,000        
Price per share (usd per share)   $ 33.44        
2014 Omnibus Share Incentive Plan (2014 Plan) | Restricted Stock Units (RSUs)            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares awarded (shares) 237,000 50,000   311,000    
Price per share (usd per share) $ 40.03 $ 33.44   $ 29.99    
Non Employee Directors Plan | Restricted Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares awarded (shares)     21,875     26,117
Price per share (usd per share)     $ 33.60     $ 28.15
2011 Omnibus Share Incentive Plan | Performance Stock Units (PSUs) [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares awarded (shares)         165,000  
Price per share (usd per share)         $ 25.52