Restructuring (Cumulative Restructuring and Remaining Costs) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Mar. 31, 2021
2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		$ 31.6
2019 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		16.1
2017 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		13.1
Severance | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		27.0
Severance | 2019 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		16.1
Severance | 2017 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		26.5
Other Restructuring | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		4.6
Other Restructuring | 2019 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		0.0
Other Restructuring | 2017 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		(13.4)
Fluid Handling | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		3.8
Fluid Handling | 2019 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		16.1
Fluid Handling | 2017 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		0.8
Fluid Handling | Severance | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		3.8
Fluid Handling | Severance | 2019 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		16.1
Fluid Handling | Severance | 2017 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		13.5
Fluid Handling | Other Restructuring | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		0.0
Fluid Handling | Other Restructuring | 2019 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		0.0
Fluid Handling | Other Restructuring | 2017 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		(12.7)
Payment & Merchandising Technologies | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		20.7
Payment & Merchandising Technologies | 2017 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		12.4
Payment & Merchandising Technologies | Severance | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		16.1
Payment & Merchandising Technologies | Severance | 2017 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		11.7
Payment & Merchandising Technologies | Other Restructuring | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		4.6
Payment & Merchandising Technologies | Other Restructuring | 2017 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		0.7
Aerospace & Electronics | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		6.5
Aerospace & Electronics | 2017 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		(0.1)
Aerospace & Electronics | Severance | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		6.5
Aerospace & Electronics | Severance | 2017 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		1.3
Aerospace & Electronics | Other Restructuring | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		0.0
Aerospace & Electronics | Other Restructuring | 2017 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		(1.4)
Engineered Materials | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		0.6
Engineered Materials | Severance | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		0.6
Engineered Materials | Other Restructuring | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net		$ 0.0
Forecast | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Remaining Costs	$ 0.0
Forecast | 2019 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Remaining Costs	2.1
Forecast | 2017 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Remaining Costs	0.0
Forecast | Fluid Handling | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Remaining Costs	0.0
Forecast | Fluid Handling | 2019 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Remaining Costs	2.1
Forecast | Fluid Handling | 2017 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Remaining Costs	0.0
Forecast | Payment & Merchandising Technologies | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Remaining Costs	0.0
Forecast | Payment & Merchandising Technologies | 2017 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Remaining Costs	0.0
Forecast | Aerospace & Electronics | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Remaining Costs	0.0
Forecast | Aerospace & Electronics | 2017 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Remaining Costs	0.0
Forecast | Engineered Materials | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Remaining Costs	$ 0.0