Pension and Other Benefits - Narrative (Details) - Pension Benefits - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Defined Benefit Plan Disclosure [Line Items]
Settlement losses	$ 0.0	$ (1.7)	$ 0.0	$ (7.5)
Continuing Operations
Defined Benefit Plan Disclosure [Line Items]
Settlement losses		1.5		5.9
Discontinued Operations
Defined Benefit Plan Disclosure [Line Items]
Settlement losses		$ 0.2		1.6
United States
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer			10.0	10.0
Foreign Plan
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer			$ 0.0	$ 2.5