Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 677.9	$ 841.6	$ 1,475.7	$ 1,673.3
Fluid Handling
Disaggregation of Revenue [Line Items]
Net sales	239.3	290.6	495.9	564.3
Fluid Handling | Process Valves and Related Products
Disaggregation of Revenue [Line Items]
Net sales	160.8	182.4	317.9	350.4
Fluid Handling | Commercial Valves
Disaggregation of Revenue [Line Items]
Net sales	58.3	83.6	134.1	164.4
Fluid Handling | Pumps and Systems
Disaggregation of Revenue [Line Items]
Net sales	20.2	24.6	43.9	49.5
Payment & Merchandising Technologies
Disaggregation of Revenue [Line Items]
Net sales	247.6	291.0	544.9	594.8
Payment & Merchandising Technologies | Payment Acceptance and Dispensing Products
Disaggregation of Revenue [Line Items]
Net sales	113.5	154.0	280.2	312.7
Payment & Merchandising Technologies | Banknotes and Security Products
Disaggregation of Revenue [Line Items]
Net sales	106.7	88.5	200.8	187.1
Payment & Merchandising Technologies | Merchandising Equipment
Disaggregation of Revenue [Line Items]
Net sales	27.4	48.5	63.9	95.0
Aerospace & Electronics
Disaggregation of Revenue [Line Items]
Net sales	157.4	204.5	350.3	399.1
Aerospace & Electronics | Commercial Original Equipment
Disaggregation of Revenue [Line Items]
Net sales	51.9	91.3	132.5	181.7
Aerospace & Electronics | Military and Other Original Equipment
Disaggregation of Revenue [Line Items]
Net sales	65.5	55.4	125.9	106.9
Aerospace & Electronics | Commercial Aftermarket Products
Disaggregation of Revenue [Line Items]
Net sales	20.3	41.4	54.2	79.6
Aerospace & Electronics | Military Aftermarket Products
Disaggregation of Revenue [Line Items]
Net sales	19.7	16.4	37.7	30.9
Engineered Materials
Disaggregation of Revenue [Line Items]
Net sales	33.6	55.5	84.6	115.1
Engineered Materials | FRP - Recreational Vehicles
Disaggregation of Revenue [Line Items]
Net sales	9.7	22.2	28.5	48.7
Engineered Materials | FRP - Building Products
Disaggregation of Revenue [Line Items]
Net sales	19.4	24.0	44.3	47.7
Engineered Materials | FRP - Transportation
Disaggregation of Revenue [Line Items]
Net sales	$ 4.5	$ 9.3	$ 11.8	$ 18.7