Income Taxes - Summary of Net Operating Loss Carryforwards (Details) $ in Millions	Dec. 31, 2019 USD ($)
United States Federal and Non-United States
Income Tax Contingency [Line Items]
2020	$ 2.1
2021	5.3
2022	3.8
2023	3.9
2024	5.7
Thereafter	25.2
No expirations	353.4
Total net operating loss carryforwards	399.4
United States State
Income Tax Contingency [Line Items]
2020	0.2
2021	3.0
2022	11.1
2023	9.8
2024	57.3
Thereafter	87.8
No expirations	0.0
Total net operating loss carryforwards	$ 169.2