Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 4.0	$ (3.6)	$ (3.5)	$ 8.2
Increase (decrease) due to tax audit settlements		$ (2.7)	$ (2.7)
Effective tax rate (as a percent)	58.00%		25.70%	16.50%
Discrete tax expense (benefit) from revaluation of deferred tax liabilities	$ 2.7		$ (3.2)	$ (2.7)