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EARNINGS PER SHARE
 12 Months Ended
Dec. 31, 2019
Earnings Per Share [Abstract]  
Earnings Per Share EARNINGS PER SHARE
The table below illustrates the reconciliation of the earnings and number of shares used in our calculations of basic and diluted earnings per share, the latter of which uses the treasury stock method in order to calculate the dilutive effect of the Company’s potential common stock:
(in millions, except per share amounts)
2019
 
2018
 
2017
Computation of Basic Earnings Per Share
 
 
 
 
 
Net income
$
1,273

 
$
1,907

 
$
1,459

Shares for basic earnings per share
332.7

 
350.1

 
375.2

Basic earnings per share
$
3.83

 
$
5.45

 
$
3.89

Computation of Diluted Earnings Per Share
 
 
 
 
 
Net income
$
1,273

 
$
1,907

 
$
1,459

Shares for basic earnings per share
332.7

 
350.1

 
375.2

Effect of dilutive securities
 
 
 
 
 
Share-based compensation
2.8

 
4.1

 
4.7

Shares for diluted earnings per share
335.5

 
354.2

 
379.9

Diluted earnings per share
$
3.80

 
$
5.38

 
$
3.84