Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 734.8	$ 772.3	$ 2,210.5	$ 2,445.6
Fluid Handling
Disaggregation of Revenue [Line Items]
Net sales	252.3	276.1	748.2	840.4
Fluid Handling | Process Valves and Related Products
Disaggregation of Revenue [Line Items]
Net sales	153.9	163.3	471.7	513.7
Fluid Handling | Commercial Valves
Disaggregation of Revenue [Line Items]
Net sales	76.1	88.8	210.3	253.2
Fluid Handling | Pumps and Systems
Disaggregation of Revenue [Line Items]
Net sales	22.3	24.0	66.2	73.5
Payment & Merchandising Technologies
Disaggregation of Revenue [Line Items]
Net sales	277.2	248.9	822.1	843.7
Payment & Merchandising Technologies | Payment Acceptance and Dispensing Products 1
Disaggregation of Revenue [Line Items]
Net sales	161.6	197.0	505.7	604.7
Payment & Merchandising Technologies | Banknotes and Security Products
Disaggregation of Revenue [Line Items]
Net sales	115.6	51.9	316.4	239.0
Aerospace & Electronics
Disaggregation of Revenue [Line Items]
Net sales	157.0	197.2	507.3	596.3
Aerospace & Electronics | Commercial Original Equipment
Disaggregation of Revenue [Line Items]
Net sales	47.5	85.9	180.0	267.6
Aerospace & Electronics | Military and Other Original Equipment
Disaggregation of Revenue [Line Items]
Net sales	70.9	55.4	196.8	162.3
Aerospace & Electronics | Commercial Aftermarket Products
Disaggregation of Revenue [Line Items]
Net sales	20.2	41.8	74.4	121.4
Aerospace & Electronics | Military Aftermarket Products
Disaggregation of Revenue [Line Items]
Net sales	18.4	14.1	56.1	45.0
Engineered Materials
Disaggregation of Revenue [Line Items]
Net sales	48.3	50.1	132.9	165.2
Engineered Materials | FRP - Recreational Vehicles
Disaggregation of Revenue [Line Items]
Net sales	21.9	19.7	50.6	68.4
Engineered Materials | FRP - Building Products
Disaggregation of Revenue [Line Items]
Net sales	20.2	22.8	64.4	70.5
Engineered Materials | FRP - Transportation
Disaggregation of Revenue [Line Items]
Net sales	$ 6.2	$ 7.6	$ 17.9	$ 26.3