Restructuring (Restructuring Charges) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1.6	$ 5.2	$ 6.1	$ 5.4	$ 7.2
2017 Repositioning Program
Restructuring Cost and Reserve [Line Items]
Severance costs			1.1
Other restructuring costs			1.3
Restructuring charges			2.4
Restructuring and related cost, expected cost remaining	3.6		3.6
2017 Repositioning Program | Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost remaining	1.0		1.0
2017 Repositioning Program | Facility Closing
Restructuring Cost and Reserve [Line Items]
Facility consolidation costs	2.6		2.6
2017 Repositioning Program | Fluid Handling
Restructuring Cost and Reserve [Line Items]
Severance costs			0.8
Other restructuring costs			0.0
Restructuring charges			0.8
Restructuring and related cost, expected cost remaining	2.6		2.6
2017 Repositioning Program | Fluid Handling | Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges			0.8
2017 Repositioning Program | Fluid Handling | Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring charges			0.0
2017 Repositioning Program | Payment & Merchandising Technologies
Restructuring Cost and Reserve [Line Items]
Severance costs			0.3
Other restructuring costs			1.4
Restructuring charges			1.7
Restructuring and related cost, expected cost remaining	0.3		0.3
2017 Repositioning Program | Payment & Merchandising Technologies | Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges			0.3
2017 Repositioning Program | Payment & Merchandising Technologies | Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring charges			1.4
2017 Repositioning Program | Aerospace & Electronics
Restructuring Cost and Reserve [Line Items]
Other restructuring costs			(0.1)
Restructuring charges			(0.1)
Restructuring and related cost, expected cost remaining	0.7		0.7
2017 Repositioning Program | Aerospace & Electronics | Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges			0.0
2017 Repositioning Program | Aerospace & Electronics | Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring charges			(0.1)
2017 Repositioning Program | Expected Restructuring Costs in 2019
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost remaining	2.0		2.0
2017 Repositioning Program | Expected Restructuring Costs in 2019 | Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost remaining	1.0		1.0
2017 Repositioning Program | Expected Restructuring Costs in 2019 | Facility Closing
Restructuring Cost and Reserve [Line Items]
Facility consolidation costs	1.0		1.0
2017 Repositioning Program | Expected Restructuring Costs in 2019 | Fluid Handling
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost remaining	1.0		1.0
2017 Repositioning Program | Expected Restructuring Costs in 2019 | Payment & Merchandising Technologies
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost remaining	0.3		0.3
2017 Repositioning Program | Expected Restructuring Costs in 2019 | Aerospace & Electronics
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost remaining	0.7		0.7
2017 Repositioning Program | Expected Restructuring Costs in 2020
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost remaining	1.6		1.6
2017 Repositioning Program | Expected Restructuring Costs in 2020 | Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost remaining	0.0		0.0
2017 Repositioning Program | Expected Restructuring Costs in 2020 | Facility Closing
Restructuring Cost and Reserve [Line Items]
Facility consolidation costs	1.6		1.6
2017 Repositioning Program | Expected Restructuring Costs in 2020 | Fluid Handling
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost remaining	1.6		1.6
2017 Repositioning Program | Cumulative
Restructuring Cost and Reserve [Line Items]
Severance costs			31.4
Other restructuring costs			0.7
Restructuring charges			32.1
2017 Repositioning Program | Cumulative | Fluid Handling
Restructuring Cost and Reserve [Line Items]
Severance costs			17.5
Other restructuring costs			0.0
Restructuring charges			17.5
2017 Repositioning Program | Cumulative | Payment & Merchandising Technologies
Restructuring Cost and Reserve [Line Items]
Severance costs			12.6
Other restructuring costs			1.8
Restructuring charges			14.4
2017 Repositioning Program | Cumulative | Aerospace & Electronics
Restructuring Cost and Reserve [Line Items]
Severance costs			1.3
Other restructuring costs			(1.1)
Restructuring charges			0.2
Acquisition-Related Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost remaining	$ 0.3		0.3
Acquisition-Related Restructuring | Payment & Merchandising Technologies
Restructuring Cost and Reserve [Line Items]
Severance costs			0.9
Other restructuring costs			2.8
Restructuring charges			3.7
Acquisition-Related Restructuring | Cumulative | Payment & Merchandising Technologies
Restructuring Cost and Reserve [Line Items]
Severance costs			2.5
Other restructuring costs			2.8
Restructuring charges			$ 5.3