Leases - Schedule of Lease Assets and Lease Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease assets	$ 39.5	$ 26.5
Finance lease assets	$ 8.9	$ 8.1
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property, plant and equipment, net	Property, plant and equipment, net
Total lease assets	$ 48.4	$ 34.6
Operating lease liabilities, current	$ 8.4	$ 4.4
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other accrued liabilities	Other accrued liabilities
Finance lease liabilities, current	$ 2.0	$ 1.9
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other accrued liabilities	Other accrued liabilities
Operating lease liabilities, noncurrent	$ 34.4	$ 25.6
Finance lease liabilities, noncurrent	$ 6.9	$ 6.2
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Long-term liabilities	Long-term liabilities
Total lease liabilities	$ 51.7	$ 38.1