Supplemental Consolidated Cash and Cash Flow Information - Summary of Cash and Restricted Cash (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020	[2]
Supplemental Cash Flow Elements [Abstract]
Cash	$ 29.0	$ 42.2		$ 133.0
Restricted cash	0.7	0.6		0.7
Total cash and restricted cash shown in the Consolidated Statements of Cash Flows	29.7	42.8	[1],[2]	133.7	[2]	$ 22.3
Interest	30.1	18.2		13.5
Income taxes	$ 14.0	$ 8.6		$ 23.7

[1] Recast for the adoption of ASU 2018-12. See Note 1 of the Consolidated Financial Statements

[2] Recast for the adoption of ASU 2018-12. See Note 1 of the Consolidated Financial Statements