Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Net sales	$ 772.3	$ 855.8	$ 2,445.6	$ 2,505.8
Fluid Handling
Disaggregation of Revenue [Line Items]
Net sales	276.1	278.7	840.4	822.1
Fluid Handling | Process Valves and Related Products
Disaggregation of Revenue [Line Items]
Net sales	163.3	168.7	513.7	509.0
Fluid Handling | Commercial Valves
Disaggregation of Revenue [Line Items]
Net sales	88.8	86.2	253.2	245.9
Fluid Handling | Other Products
Disaggregation of Revenue [Line Items]
Net sales	24.0	23.8	73.5	67.2
Payment & Merchandising Technologies
Disaggregation of Revenue [Line Items]
Net sales	248.9	327.4	843.7	944.2
Payment & Merchandising Technologies | Payment Acceptance and Dispensing Products
Disaggregation of Revenue [Line Items]
Net sales	144.3	144.9	457.0	445.7
Payment & Merchandising Technologies | Banknotes and Security Products
Disaggregation of Revenue [Line Items]
Net sales	51.9	126.7	239.0	348.1
Payment & Merchandising Technologies | Merchandising Equipment
Disaggregation of Revenue [Line Items]
Net sales	52.7	55.8	147.7	150.4
Aerospace & Electronics
Disaggregation of Revenue [Line Items]
Net sales	197.2	189.5	596.3	547.0
Aerospace & Electronics | Commercial Original Equipment
Disaggregation of Revenue [Line Items]
Net sales	85.9	85.2	267.6	256.0
Aerospace & Electronics | Military and Other Original Equipment
Disaggregation of Revenue [Line Items]
Net sales	55.4	51.5	162.3	142.2
Aerospace & Electronics | Commercial Aftermarket Products
Disaggregation of Revenue [Line Items]
Net sales	41.8	38.8	121.4	109.0
Aerospace & Electronics | Military Aftermarket Products
Disaggregation of Revenue [Line Items]
Net sales	14.1	14.0	45.0	39.8
Engineered Materials
Disaggregation of Revenue [Line Items]
Net sales	50.1	60.2	165.2	192.5
Engineered Materials | FRP - Recreational Vehicles
Disaggregation of Revenue [Line Items]
Net sales	19.7	28.4	68.4	96.9
Engineered Materials | FRP - Building Products
Disaggregation of Revenue [Line Items]
Net sales	22.8	23.5	70.5	70.7
Engineered Materials | FRP - Transportation
Disaggregation of Revenue [Line Items]
Net sales	$ 7.6	$ 8.3	$ 26.3	$ 24.9