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Shareholders' Equity - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 9 Months Ended
Jul. 29, 2015
Oct. 30, 2018
Sep. 28, 2018
Sep. 29, 2017
Feb. 21, 2018
Dec. 29, 2017
Class of Stock [Line Items]            
Preferred shares, shares authorized (shares)     50,000,000     50,000,000
Preferred shares, par value (usd per share)     $ 0.01     $ 0.01
Preferred shares, issued (shares)     0     0
Preferred shares, outstanding (shares)     0     0
Ordinary shares, authorized (shares)     200,000,000     200,000,000
Ordinary shares, par value (usd per share)     $ 0.01     $ 0.01
Ordinary shares, issued (shares)     48,375,971     48,759,481
Ordinary shares, outstanding (shares)     48,375,971     48,759,481
Stock Repurchase Program:            
Duration of share repurchase program 3 years          
Stock repurchase program, ordinary shares authorized         $ 300.0  
Stock repurchase program, value of ordinary shares repurchased and retired     $ 19.6      
Stock repurchase program, ordinary shares repurchased and retired (shares)     512,300      
Stock repurchase program, maximum remaining amount     $ 280.4      
Payments of dividends, common stock     $ 21.8 $ 22.7    
Subsequent Event            
Stock Repurchase Program:            
Stock repurchased during period (shares)   0