Revenue Recognition - Disaggregation of Revenue by Major Geographical Region (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 72.6	$ 97.7	$ 206.0	$ 310.0
North America
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	11.0	22.7	40.5	57.1
Latin America
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0.0	0.0	0.1	1.0
Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	9.8	12.8	32.3	45.7
Asia
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	51.8	62.2	133.1	206.2
JAPAN
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	23.5	39.6	81.1	131.4
UNITED STATES
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	11.0	22.8	40.0	56.6
CHINA
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 19.0	$ 13.4	$ 29.1	$ 46.3