EARNINGS PER SHARE

3 Months Ended

Mar. 31, 2023

Basic and diluted earnings per share are based on the weighted average number of shares of the Company's common stock and potential common stock outstanding during the period. Potential common stock, for purposes of determining diluted earnings per share, assumes the issuance of all potentially dilutive share equivalents using the treasury stock method.

A computation of earnings per share and weighted average shares of the Company's common stock outstanding for the three months ended March 31, 2023 and 2022 is as follows:


	Three Months Ended March 31,
(dollars in millions, except per share amounts)	2023		2022
Net income	$	43.0	$	56.4
Net income attributable to non-controlling interests	(0.1)		(0.3)
Net income attributable to common stockholders	$	42.9	$	56.1






Basic weighted average common shares outstanding	241.1		247.3
Denominator adjustments for diluted EPS:



Number of stock options and RSUs	0.7		1.9
Denominator adjustments for diluted EPS	0.7		1.9
Diluted weighted average common shares outstanding	241.8		249.2

Earnings per share attributable to common stockholders:
Basic	$	0.18	$	0.23
Diluted	$	0.18	$	0.23

For the three months ended March 31, 2023 and 2022, the following securities were not included in the computation of diluted shares outstanding because either the effect would be anti-dilutive or the applicable performance targets were not yet met for awards contingent upon such measures:


	Three Months Ended March 31,
(shares in millions)	2023	2022


Shares issuable upon vesting of RSUs and exercise of stock options	3.7	3.6