Segment Information (Sales By Major Product Group) (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
Revenue from External Customer [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
Process Valves and Related Products | Fluid Handling
Revenue from External Customer [Line Items]
Net sales									685.1	685.4	640.1
Commercial Valves | Fluid Handling
Revenue from External Customer [Line Items]
Net sales									332.1	325.4	310.1
Other Products | Fluid Handling
Revenue from External Customer [Line Items]
Net sales									100.2	91.0	92.3
Payment Acceptance and Dispensing Products | Payment & Merchandising Technologies
Revenue from External Customer [Line Items]
Net sales									608.6	594.2	575.9
Banknotes and Security Products | Payment & Merchandising Technologies
Revenue from External Customer [Line Items]
Net sales									352.8	458.2	0.0
Merchandising Equipment | Payment & Merchandising Technologies
Revenue from External Customer [Line Items]
Net sales									196.9	204.6	200.8
Commercial Original Equipment | Aerospace & Electronics
Revenue from External Customer [Line Items]
Net sales									357.2	343.4	346.1
Military Original Equipment | Aerospace & Electronics
Revenue from External Customer [Line Items]
Net sales									217.2	195.7	159.0
Commercial Aftermarket Products | Aerospace & Electronics
Revenue from External Customer [Line Items]
Net sales									161.4	150.5	134.0
Military Aftermarket Products | Aerospace & Electronics
Revenue from External Customer [Line Items]
Net sales									63.0	53.9	52.3
FRP - Recreational Vehicles | Engineered Materials
Revenue from External Customer [Line Items]
Net sales									84.5	119.0	150.5
FRP - Building Products | Engineered Materials
Revenue from External Customer [Line Items]
Net sales									91.9	92.2	95.2
FRP - Transportation | Engineered Materials
Revenue from External Customer [Line Items]
Net sales									32.2	32.0	29.7
Outside | Fluid Handling
Revenue from External Customer [Line Items]
Net sales									1,117.4	1,101.8	1,042.5
Outside | Payment & Merchandising Technologies
Revenue from External Customer [Line Items]
Net sales									1,158.3	1,257.0	776.7
Outside | Aerospace & Electronics
Revenue from External Customer [Line Items]
Net sales									798.8	743.5	691.4
Outside | Engineered Materials
Revenue from External Customer [Line Items]
Net sales									$ 208.6	$ 243.2	$ 275.4