Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2021

Earnings Per Share [Abstract]

Schedule of earnings per share, basic and diluted

A computation of earnings per share from continuing operations and weighted average shares of the Company's common stock outstanding for the three months ended March 31, 2021 and 2020 is as follows:

	Three Months Ended March 31,
(dollars in millions, except per share amounts)	2021		2020
Net income from continuing operations attributable to common stockholders	$	82.3	$	8.4
Basic weighted average common shares outstanding	247.2		250.3
Denominator adjustments for diluted EPS:
Number of shares issuable upon conversion of Series A Preferred Stock	—		1.2
Number of stock options and RSUs	1.4		0.5
Denominator adjustments for diluted EPS	1.4		1.7
Diluted weighted average common shares outstanding	248.6		252.0
Earnings per share from continuing operations attributable to common stockholders:
Basic	$	0.33	$	0.03
Diluted	$	0.33	$	0.03

Schedule of antidilutive securities excluded from computation of earnings per share

For the three months ended March 31, 2021 and 2020, the following securities were not included in the computation of diluted shares outstanding because the effect would be anti-dilutive or because performance targets were not yet met for awards contingent upon such measures:

	Three Months Ended March 31,
(shares in millions)	2021	2020
Shares issuable upon vesting of RSUs and exercise of stock options	3.0	4.9
Total	3.0	4.9