Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 797.9	$ 831.7
Fluid Handling
Disaggregation of Revenue [Line Items]
Net sales	256.7	273.7
Fluid Handling | Process Valves and Related Products
Disaggregation of Revenue [Line Items]
Net sales	157.2	168.0
Fluid Handling | Commercial Valves
Disaggregation of Revenue [Line Items]
Net sales	75.9	80.8
Fluid Handling | Pumps and Systems
Disaggregation of Revenue [Line Items]
Net sales	23.6	24.9
Payment & Merchandising Technologies
Disaggregation of Revenue [Line Items]
Net sales	297.4	303.8
Payment & Merchandising Technologies | Payment Acceptance and Dispensing Products
Disaggregation of Revenue [Line Items]
Net sales	166.7	158.8
Payment & Merchandising Technologies | Banknotes and Security Products
Disaggregation of Revenue [Line Items]
Net sales	94.2	98.6
Payment & Merchandising Technologies | Merchandising Equipment
Disaggregation of Revenue [Line Items]
Net sales	36.5	46.4
Aerospace & Electronics
Disaggregation of Revenue [Line Items]
Net sales	192.9	194.6
Aerospace & Electronics | Commercial Original Equipment
Disaggregation of Revenue [Line Items]
Net sales	80.6	90.3
Aerospace & Electronics | Military and Other Original Equipment
Disaggregation of Revenue [Line Items]
Net sales	60.4	51.5
Aerospace & Electronics | Commercial Aftermarket Products
Disaggregation of Revenue [Line Items]
Net sales	33.9	38.2
Aerospace & Electronics | Military Aftermarket Products
Disaggregation of Revenue [Line Items]
Net sales	18.0	14.6
Engineered Materials
Disaggregation of Revenue [Line Items]
Net sales	50.9	59.6
Engineered Materials | FRP - Recreational Vehicles
Disaggregation of Revenue [Line Items]
Net sales	18.8	26.6
Engineered Materials | FRP - Building Products
Disaggregation of Revenue [Line Items]
Net sales	24.9	23.6
Engineered Materials | FRP - Transportation
Disaggregation of Revenue [Line Items]
Net sales	$ 7.2	$ 9.4