Income Taxes - Effective Income Tax Provision Rate (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Income before income taxes	$ 173.2	$ 135.9	$ 496.3	$ 388.1
Provision (benefit) for income taxes	$ 30.3	$ 2.7	$ 104.6	$ 25.8
Effective income tax provision rate (as a percent)	17.50%	2.00%	21.10%	6.60%