Restructuring (Cumulative Restructuring and Remaining Costs) (Details) $ in Millions	Sep. 30, 2021 USD ($)
2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net	$ 29.9
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	12.9
Severance | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net	26.1
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	26.3
Other Restructuring | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net	3.8
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)
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)
Process Flow Technologies | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net	3.8
Process Flow Technologies | 2019 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net	16.1
Process Flow Technologies | 2017 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net	0.8
Process Flow Technologies | Severance | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net	3.8
Process Flow Technologies | Severance | 2019 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net	16.1
Process Flow Technologies | Severance | 2017 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net	13.5
Process Flow Technologies | Other Restructuring | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net	0.0
Process Flow Technologies | Other Restructuring | 2019 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net	0.0
Process Flow Technologies | 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	19.6
Payment & Merchandising Technologies | 2017 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net	12.2
Payment & Merchandising Technologies | Severance | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net	15.8
Payment & Merchandising Technologies | Severance | 2017 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net	11.5
Payment & Merchandising Technologies | Other Restructuring | 2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net	3.8
Payment & Merchandising Technologies | Other Restructuring | 2017 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Cumulative Restructuring Costs, Net	$ 0.7