Restructuring (Summary of Restructuring Charges) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Restructuring Cost and Reserve [Line Items]
Severance			$ 0.0	$ (0.6)
Other			0.0	12.7
Total	$ 0.0	$ (0.2)	0.0	(13.3)
Process Flow Technologies
Restructuring Cost and Reserve [Line Items]
Total	0.0	0.0	0.0	(12.6)
Payment & Merchandising Technologies
Restructuring Cost and Reserve [Line Items]
Total	0.0	(0.2)	0.0	(0.7)
2020 Repositioning Actions
Restructuring Cost and Reserve [Line Items]
Severance			0.0	(0.5)
Other			0.0	0.0
Total			0.0	(0.5)
2020 Repositioning Actions | Payment & Merchandising Technologies
Restructuring Cost and Reserve [Line Items]
Severance			0.0	(0.5)
Other			0.0	0.0
Total			0.0	(0.5)
2019 Repositioning
Restructuring Cost and Reserve [Line Items]
Severance			0.0	0.1
Other			0.0	0.0
Total			0.0	0.1
2019 Repositioning | Process Flow Technologies
Restructuring Cost and Reserve [Line Items]
Severance			0.0	0.1
Other			0.0	0.0
Total			0.0	0.1
2017 Repositioning
Restructuring Cost and Reserve [Line Items]
Severance			0.0	(0.2)
Other			0.0	12.7
Total	$ 0.0	$ (0.2)	0.0	(12.9)
2017 Repositioning | Process Flow Technologies
Restructuring Cost and Reserve [Line Items]
Severance			0.0	0.0
Other			0.0	12.7
Total			0.0	(12.7)
2017 Repositioning | Payment & Merchandising Technologies
Restructuring Cost and Reserve [Line Items]
Severance			0.0	(0.2)
Other			0.0	0.0
Total			$ 0.0	$ (0.2)