Restructuring - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		21 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021
Restructuring Costs [Abstract]
Restructuring charges	$ 1.1	$ 10.0	$ 10.3	$ 77.4
Restructuring Program 2020 to 2022
Restructuring Costs [Abstract]
Expected restructuring cost	350.0		350.0		$ 350.0
Restructuring charges	1.1		10.3
Restructuring Program 2020 to 2022 | Corporate
Restructuring Costs [Abstract]
Restructuring charges	0.1		5.0		11.0
Restructuring Program 2020 to 2022 | Industrial Technologies and Services
Restructuring Costs [Abstract]
Restructuring charges	1.0		5.2		75.5
Restructuring Program 2020 to 2022 | Precision and Science Technologies
Restructuring Costs [Abstract]
Restructuring charges	$ 0.0		0.1		$ 7.0
Restructuring Program 2020 to 2022 | Energy Segment | Other Operating Expense, Net
Restructuring Costs [Abstract]
Non-cash charges			$ 6.2