Revenue Recognition, Contracts with Customers - Revenue from Contracts with Customers Summarized by Segment Geography (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Net revenue	$ 90.0	$ 66.1	$ 177.7	$ 129.5
ASC 606
Disaggregation of Revenue [Line Items]
Net revenue	77.6	56.7	154.5	111.6
ASC 842
Disaggregation of Revenue [Line Items]
Machine lease revenue	12.4	9.4	23.2	17.9
Net revenue	90.0	66.1	177.7	129.5
North America | ASC 606
Disaggregation of Revenue [Line Items]
Revenue	30.6	28.2	54.2	51.9
Europe/Asia | ASC 606
Disaggregation of Revenue [Line Items]
Revenue	$ 47.0	$ 28.5	$ 100.3	$ 59.7