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Earnings Per Share
 12 Months Ended
Dec. 31, 2024
Earnings Per Share [Abstract]  
Earnings Per Share
5.
Earnings Per Share

The following table sets forth the computation of basic and diluted income per common share for the periods presented (dollars and shares in millions, except per share data).

 

 

Year Ended December 31,

 

 

 

2024

 

 

2023

 

 

2022

 

Numerator:

 

 

 

 

 

 

 

 

 

Net income

 

$

805.1

 

 

$

765.2

 

 

$

1,029.8

 

Less: Distributed and undistributed earnings allocated to participating
   securities

 

 

(5.6

)

 

 

(6.2

)

 

 

(7.9

)

Net income attributable to common shareholders

 

$

799.5

 

 

$

759.0

 

 

$

1,021.9

 

Denominator:

 

 

 

 

 

 

 

 

 

Weighted average basic common shares outstanding

 

 

89.1

 

 

 

89.1

 

 

 

92.3

 

Effect of dilutive securities

 

 

0.4

 

 

 

0.4

 

 

 

0.4

 

Diluted common shares outstanding

 

 

89.5

 

 

 

89.5

 

 

 

92.7

 

Basic income per common share

 

$

8.97

 

 

$

8.52

 

 

$

11.08

 

Diluted income per common share

 

$

8.93

 

 

$

8.48

 

 

$

11.03