Income Taxes - Summary of Change in Income Tax Valuation Allowance (Details) - SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Contingency [Line Items]
Beginning balance	$ 282.6	$ 205.7	$ 208.0
Provision charged to expense	(24.0)	82.1	17.0
Deductions	(17.0)	(5.2)	(19.3)
Ending balance	$ 241.6	$ 282.6	$ 205.7