Supplemental Consolidated Cash and Cash Flow Information - Summary of Cash and Restricted Cash (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract]
Cash	$ 133.0	$ 21.8	$ 25.2
Restricted cash	0.7	0.5	0.3
Total cash and restricted cash shown in the Consolidated Statements of Cash Flows	133.7	22.3	25.5	$ 11.9
Interest	13.5	15.5	14.1
Income taxes	$ 23.7	$ 17.3	$ 22.9