Leases - Schedule of Future Minimum Operating Lease Payments (Details) $ in Millions	Dec. 31, 2020 USD ($)
Operating Leases
2021	$ 5.5
2022	4.3
2023	3.8
2024	3.8
2025	3.6
Thereafter	5.5
Total future minimum lease payments	26.5
Less: Imputed interest	2.8
Present value of lease liabilities	23.7
Accrued expense and other current liabilities (current maturities of leases)	4.7
Other liabilities (non-current maturities of leases)	$ 19.0
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesNoncurrent
Operating Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilities
Finance Leases
2021	$ 0.4
2022	0.4
2023	0.4
2024	0.4
2025	0.4
Thereafter	6.0
Total future minimum lease payments	8.0
Less: Imputed interest	1.8
Present value of lease liabilities	6.2
Accrued expense and other current liabilities (current maturities of leases)	0.2
Other liabilities (non-current maturities of leases)	$ 6.0
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesNoncurrent
Finance Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilities