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Earnings per share
 12 Months Ended
Dec. 31, 2022
Earnings Per Share [Abstract]  
Earnings per share

21. Earnings Per Share

The computation of basic and diluted EPS under the two-class method were as follows (dollars and shares in millions):

 

 

 

2022

 

 

2021

 

 

2020

 

Numerator: 1)

 

 

 

 

 

 

 

 

 

Net income attributable to common shareholders

 

$

423

 

 

$

435

 

 

$

187

 

Denominator: 1)

 

 

 

 

 

 

 

 

 

Basic weighted average common stock

 

 

87.1

 

 

 

87.5

 

 

 

87.3

 

Added: Weighted average stock options/share awards

 

 

0.2

 

 

 

0.2

 

 

 

0.2

 

Diluted weighted average common stock

 

 

87.2

 

 

 

87.7

 

 

 

87.5

 

 

 

 

 

 

 

 

 

 

 

Basic EPS

 

$

4.86

 

 

$

4.97

 

 

$

2.14

 

Diluted EPS

 

$

4.85

 

 

$

4.96

 

 

$

2.14

 

 

1) The Company’s unvested RSUs and PSs, of which some included the right to receive non-forfeitable dividend equivalents, are considered participating securities. Calculations of EPS under the two-class method exclude from the numerator any dividends paid or owed on participating securities and any undistributed earnings considered to be attributable to participating securities. The related participating securities are similarly excluded from the denominator. However, these participating securities have been immaterial for all the years presented.

 

Anti-dilutive shares outstanding for the years ended December 31, 2022, 2021 and 2020 were immaterial.