Leases - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Remaining lease term (up to)	7 years
Operating lease costs	$ 3.4	$ 2.8
Short-term lease costs	21.4	26.9
Variable lease costs	1.7	3.2
Cash paid for amounts included in the measurement of lease liabilities in operating cash flows from operating leases	$ 3.0	$ 2.8