Share-Based Compensation - Schedule of Share-Based Payment Arrangement Activity Expensed (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Cost (reversal) of employee share-based compensation included in income, before income tax	$ 12.4	$ 13.8
Income tax benefit	(3.0)	(3.3)
Total cost of share-based compensation, after tax	9.4	10.5
Stock options
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Cost (reversal) of employee share-based compensation included in income, before income tax	0.1	0.4
Restricted stock units
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Cost (reversal) of employee share-based compensation included in income, before income tax	4.6	4.1
Restricted stock awards
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Cost (reversal) of employee share-based compensation included in income, before income tax	0.2	0.4
Performance based restricted share unit awards
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Cost (reversal) of employee share-based compensation included in income, before income tax	$ 7.5	$ 8.9