Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 251.1	$ 227.3
Performance obligation	0.0		$ 0.0
United States
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	233.5	215.3
Canada
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 17.6	$ 12.0