Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Net sales	$ 837.5	$ 772.3	$ 841.6	$ 831.7	$ 839.6	$ 855.8	$ 851.0	$ 799.1	$ 3,283.1	$ 3,345.5	$ 2,786.0
Fluid Handling | Process Valves and Related Products
Disaggregation of Revenue [Line Items]
Net sales									685.1	685.4	640.1
Fluid Handling | Commercial Valves
Disaggregation of Revenue [Line Items]
Net sales									332.1	325.4	310.1
Fluid Handling | Other Products
Disaggregation of Revenue [Line Items]
Net sales									100.2	91.0	92.3
Fluid Handling | Outside
Disaggregation of Revenue [Line Items]
Net sales									1,117.4	1,101.8	1,042.5
Payment & Merchandising Technologies | Outside
Disaggregation of Revenue [Line Items]
Net sales									1,158.3	1,257.0	776.7
Payment & Merchandising Technologies | Payment Acceptance and Dispensing Products
Disaggregation of Revenue [Line Items]
Net sales									608.6	594.2	575.9
Payment & Merchandising Technologies | Banknotes and Security Products
Disaggregation of Revenue [Line Items]
Net sales									352.8	458.2	0.0
Payment & Merchandising Technologies | Merchandising Equipment
Disaggregation of Revenue [Line Items]
Net sales									196.9	204.6	200.8
Aerospace & Electronics | Outside
Disaggregation of Revenue [Line Items]
Net sales									798.8	743.5	691.4
Aerospace & Electronics | Commercial Original Equipment
Disaggregation of Revenue [Line Items]
Net sales									357.2	343.4	346.1
Aerospace & Electronics | Military Original Equipment
Disaggregation of Revenue [Line Items]
Net sales									217.2	195.7	159.0
Aerospace & Electronics | Commercial Aftermarket Products
Disaggregation of Revenue [Line Items]
Net sales									161.4	150.5	134.0
Aerospace & Electronics | Military Aftermarket Products
Disaggregation of Revenue [Line Items]
Net sales									63.0	53.9	52.3
Engineered Materials | Outside
Disaggregation of Revenue [Line Items]
Net sales									208.6	243.2	275.4
Engineered Materials | FRP - Recreational Vehicles
Disaggregation of Revenue [Line Items]
Net sales									84.5	119.0	150.5
Engineered Materials | FRP - Building Products
Disaggregation of Revenue [Line Items]
Net sales									91.9	92.2	95.2
Engineered Materials | FRP - Transportation
Disaggregation of Revenue [Line Items]
Net sales									$ 32.2	$ 32.0	$ 29.7