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Share-Based Compensation - Restricted Stock Awards and Restricted Stock Units (Details) - $ / shares
Aug. 02, 2017
Feb. 22, 2017
Jan. 03, 2017
Sep. 02, 2016
Aug. 03, 2016
Feb. 24, 2016
Jan. 04, 2016
2014 Omnibus Share Incentive Plan (2014 Plan) | Performance Stock Units (PSUs) [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares awarded (shares)   50,000       140,000  
Price per share (usd per share)   $ 56.52       $ 38.99  
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) 48,700 100,000   50,000 226,500 50,000  
Price per share (usd per share) $ 49.75 $ 56.52   $ 58.94 $ 59.83 $ 38.99  
Non Employee Directors Plan | Restricted Stock              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares awarded (shares)     14,294       22,946
Price per share (usd per share)     $ 61.21       $ 38.13