(Loss) Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2024

Earnings Per Share [Abstract]

Schedule of earnings per share, basic and diluted

The table below presents the computation of basic and diluted earnings per share ($ and shares in millions, except per share amounts):

	Year Ended December 31,
	2024		2023		2022
Numerator:
(Loss) income from continuing operations, net of tax	$	(1,118.6)	$	(100.2)	$	238.0
Income from discontinued operations, net of tax	—		—		5.1
Net (loss) income	$	(1,118.6)	$	(100.2)	$	243.1
Denominator:
Weighted-average common shares outstanding used in basic earnings per share	172.2		166.9		162.9
Incremental common shares from:
Assumed exercise of dilutive options and vesting of dilutive restricted stock units and performance stock units	—		—		3.2
Assumed conversion of 2025 Convertible Notes	—		—		11.5
Weighted average common shares outstanding used in diluted earnings per share	172.2		166.9		177.6
Earnings per share:
(Loss) earnings from continuing operations - basic	$	(6.50)	$	(0.60)	$	1.46
(Loss) earnings from continuing operations - diluted	$	(6.50)	$	(0.60)	$	1.34
Earnings from discontinued operations - basic	$	—	$	—	$	0.03
Earnings from discontinued operations - diluted	$	—	$	—	$	0.03
(Loss) earnings - basic	$	(6.50)	$	(0.60)	$	1.49
(Loss) earnings - diluted	$	(6.50)	$	(0.60)	$	1.37

Schedule of antidilutive securities excluded from computation of earnings per share

The following table presents the number of outstanding securities not included in the computation of diluted income per share, because their effect was anti-dilutive (in millions):

	Year Ended December 31,
	2024	2023	2022
Stock-based awards	6.8	4.4	1.5