Restructuring (Restructuring Charges by Segment) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring gain, net	$ 13.1	$ 1.2
Fluid Handling
Restructuring Cost and Reserve [Line Items]
Restructuring gain, net	(12.6)	0.0
Payment & Merchandising Technologies
Restructuring Cost and Reserve [Line Items]
Restructuring gain, net	(0.5)	(1.2)
Cost of Sales and Selling, General and Administrative | Fluid Handling
Restructuring Cost and Reserve [Line Items]
Other costs related to facility consolidations	$ 1.4	$ 1.3