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Shareholders' Equity (Narrative) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 01, 2022
Mar. 31, 2022
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Increase (decrease) in stock-based compensation from change in management's estimate         $ 663  
Unrecognized compensation cost     $ 82,733   82,733  
Total intrinsic value of options exercised         12,806  
Aggregate intrinsic value of options exercisable     $ 61,515   $ 61,515  
Market value of Company's common stock (in USD per share)     $ 54.02   $ 54.02  
Weighted average exercise price per share (in USD per share)     $ 49.40   $ 49.40  
Total options outstanding (in shares)     18,072   18,072  
Total options exercisable (in shares)     7,911   7,911  
Dividends declared per common share (in USD per share) $ 0.40   $ 0.40 $ 0.37 $ 0.40 $ 0.37
Cash dividends declared     $ 54,378 $ 52,389 $ 54,378 $ 52,389
Restricted Stock Units (RSUs)            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period   4 years        
Common Stock Buyback            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares purchased and retired (in shares)         3,683  
Company purchased, cost         $ 209,383  
Additional authorized amount $ 200,000          
Remaining stock repurchase authorization amount     $ 221,910   $ 221,910  
2014 Plan | Tranche One            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting rate         50.00%  
2014 Plan | Tranche Two            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting rate         50.00%  
Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award waiting period         2 years  
Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award waiting period         4 years