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Earnings Per Share
12 Months Ended
Dec. 31, 2018
Earnings Per Share [Abstract]  
Earnings Per Share
EARNINGS PER SHARE
The computations of UAL's basic and diluted earnings per share are set forth below for the years ended December 31 (in millions, except per share amounts):
 
 
2018
 
2017 (a)
 
2016 (a)
Earnings available to common stockholders
 
$
2,129

 
$
2,144

 
$
2,234

 
 
 
 
 
 
 
Basic weighted-average shares outstanding
 
275.5

 
302.7

 
329.9

Effect of employee stock awards
 
1.2

 
0.9

 
0.4

Diluted weighted-average shares outstanding
 
276.7

 
303.6

 
330.3

 
 
 
 
 
 
 
Earnings per share, basic
 
$
7.73

 
$
7.08

 
$
6.77

Earnings per share, diluted
 
$
7.70

 
$
7.06

 
$
6.76

(a) Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 1 to the financial statements contained in Part II, Item 8 of this report for additional information.
The number of antidilutive securities excluded from the computation of diluted earnings per share amounts was not material.