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Net Income Per Share (Tables)
 12 Months Ended
Dec. 31, 2019
Earnings Per Share [Abstract]  
Computation of Net Income (Loss) Per Share

The following table sets forth the computation of Net Income Per Share for the years ended December 31, 2019, 2018 and 2017 (in thousands, except per share data):
 
2019
 
2018
 
2017
Numerator for Basic and Diluted Earnings per Share -
 
 
 
 
 
Net Income
$
2,734,910

 
$
3,419,040

 
$
2,582,579

Denominator for Basic Earnings per Share -
 

 
 

 
 

Weighted Average Shares
577,670

 
576,578

 
574,620

Potential Dilutive Common Shares -
 

 
 

 
 

Stock Options/SARs
258

 
1,137

 
1,466

Restricted Stock/Units and Performance Units
2,849

 
2,726

 
2,607

Denominator for Diluted Earnings per Share -
 

 
 

 
 

Adjusted Diluted Weighted Average Shares
580,777

 
580,441

 
578,693

Net Income Per Share
 

 
 

 
 

Basic
$
4.73

 
$
5.93

 
$
4.49

Diluted
$
4.71

 
$
5.89

 
$
4.46