Restructuring (Restructuring Reserve) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1.6	$ (0.6)	$ 4.5	$ 0.2	$ 7.2
2017Repositioning [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, beginning balance			23.2
Restructuring charges			1.7
Payments for restructuring			(10.1)
Restructuring reserve, ending balance	14.8		14.8		23.2
2017Repositioning [Member] | Fluid Handling
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, beginning balance			12.9
Restructuring charges			0.8
Payments for restructuring			(2.2)
Restructuring reserve, ending balance	11.5		11.5		12.9
2017Repositioning [Member] | Fluid Handling | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, beginning balance			12.9
Restructuring charges			0.8
Payments for restructuring			(2.2)
Restructuring reserve, ending balance	11.5		11.5		12.9
2017Repositioning [Member] | Fluid Handling | Other Restructuring [Member]
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
2017Repositioning [Member] | Payment & Merchandising Technologies
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, beginning balance			9.4
Restructuring charges			1.0
Payments for restructuring			(8.2)
Restructuring reserve, ending balance	2.2		2.2		9.4
2017Repositioning [Member] | Payment & Merchandising Technologies | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, beginning balance			9.4
Restructuring charges			0.2
Payments for restructuring			(7.4)
Restructuring reserve, ending balance	2.2		2.2		9.4
2017Repositioning [Member] | Payment & Merchandising Technologies | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, beginning balance			0.0
Restructuring charges			0.8
Payments for restructuring			(0.8)
Restructuring reserve, ending balance	0.0		0.0		0.0
2017Repositioning [Member] | Aerospace & Electronics
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, beginning balance			0.9
Restructuring charges			(0.1)
Payments for restructuring			0.3
Restructuring reserve, ending balance	1.1		1.1		0.9
2017Repositioning [Member] | Aerospace & Electronics | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, beginning balance			0.9
Restructuring charges			0.0
Payments for restructuring			0.0
Restructuring reserve, ending balance	0.9		0.9		0.9
2017Repositioning [Member] | Aerospace & Electronics | Other Restructuring [Member]
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