Earnings Per Share - Components of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Numerator:
Income from continuing operations, net of tax		$ 238.0	$ 263.5	$ 42.5
Income (loss) from discontinued operations, net of tax		5.1	77.0	(9.2)
Net income		$ 243.1	$ 340.5	$ 33.3
Denominator:
Weighted-average common shares outstanding used in basic earnings per share (in shares)		162.9	161.2	159.6
Assumed exercise of dilutive options and vesting of dilutive restricted stock units (in shares)		3.2	4.4	2.2
Assumed conversion of the Notes (in shares)		11.5	12.0	2.3
Weighted average common shares outstanding used in diluted earnings (loss) per share (in shares)		177.6	177.6	164.1
Earnings per share:
Earnings from continuing operations - basic (in USD per share)		$ 1.46	$ 1.63	$ 0.27
Earnings from continuing operations - diluted (in USD per share)		1.34	1.48	0.26
Earnings (loss) from discontinued operations - basic (in USD per share)		0.03	0.48	(0.06)
Earnings (loss) from discontinued operations - diluted (in USD per share)		0.03	0.43	(0.06)
Earnings - basic (in USD per share)		1.49	2.11	0.21
Earnings - diluted (in USD per share)	[1]	$ 1.37	$ 1.92	$ 0.20

[1] * Earnings per share is computed independently for earnings per share from continuing operations and earnings per share from discontinued operations. The sum of earnings per share from continuing operations and earnings per share from discontinued operations does not equal earnings per share due to rounding.