Restructuring (Restructuring Reserve) (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]
Restructuring reserve, beginning balance			23.2
Restructuring charges			2.4
Payments for restructuring			(11.7)
Restructuring reserve, ending balance	13.9		13.9		23.2
2017 Repositioning Program | Fluid Handling
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, beginning balance			12.9
Restructuring charges			0.8
Payments for restructuring			(2.8)
Restructuring reserve, ending balance	10.9		10.9		12.9
2017 Repositioning Program | Fluid Handling | Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, beginning balance			12.9
Restructuring charges			0.8
Payments for restructuring			(2.8)
Restructuring reserve, ending balance	10.9		10.9		12.9
2017 Repositioning Program | Fluid Handling | Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, beginning balance			0.0
Restructuring charges			0.0
Payments for restructuring			0.0
Restructuring reserve, ending balance	0.0		0.0		0.0
2017 Repositioning Program | Payment & Merchandising Technologies
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, beginning balance			9.4
Restructuring charges			1.7
Payments for restructuring			(9.1)
Restructuring reserve, ending balance	2.0		2.0		9.4
2017 Repositioning Program | Payment & Merchandising Technologies | Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, beginning balance			9.4
Restructuring charges			0.3
Payments for restructuring			(7.7)
Restructuring reserve, ending balance	2.0		2.0		9.4
2017 Repositioning Program | Payment & Merchandising Technologies | Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, beginning balance			0.0
Restructuring charges			1.4
Payments for restructuring			(1.4)
Restructuring reserve, ending balance	0.0		0.0		0.0
2017 Repositioning Program | Aerospace & Electronics
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, beginning balance			0.9
Restructuring charges			(0.1)
Payments for restructuring			0.2
Restructuring reserve, ending balance	1.0		1.0		0.9
2017 Repositioning Program | Aerospace & Electronics | Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, beginning balance			0.9
Restructuring charges			0.0
Payments for restructuring			(0.1)
Restructuring reserve, ending balance	0.8		0.8		0.9
2017 Repositioning Program | Aerospace & Electronics | Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, beginning balance			0.0
Restructuring charges			(0.1)
Payments for restructuring			0.3
Restructuring reserve, ending balance	$ 0.2		$ 0.2		$ 0.0