Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Disaggregation of Revenue [Line Items]
Document Period End Date	Mar. 31, 2019
Revenues	$ 831.7	$ 799.1
Fluid Handling
Disaggregation of Revenue [Line Items]
Revenues	273.7	266.6
Fluid Handling | Process Valves and Related Products
Disaggregation of Revenue [Line Items]
Revenues	168.0	165.0
Fluid Handling | Commercial Valves
Disaggregation of Revenue [Line Items]
Revenues	80.8	80.5
Fluid Handling | Other Products
Disaggregation of Revenue [Line Items]
Revenues	24.9	21.1
Payment & Merchandising Technologies
Disaggregation of Revenue [Line Items]
Revenues	303.8	292.4
Payment & Merchandising Technologies | Payment Acceptance and Dispensing Products
Disaggregation of Revenue [Line Items]
Revenues	158.8	145.4
Payment & Merchandising Technologies | Banknotes and Security Products
Disaggregation of Revenue [Line Items]
Revenues	98.6	99.8
Payment & Merchandising Technologies | Merchandising Equipment
Disaggregation of Revenue [Line Items]
Revenues	46.4	47.2
Aerospace & Electronics
Disaggregation of Revenue [Line Items]
Revenues	194.6	170.4
Aerospace & Electronics | Commercial Original Equipment
Disaggregation of Revenue [Line Items]
Revenues	90.3	84.7
Aerospace & Electronics | Military and Other Original Equipment
Disaggregation of Revenue [Line Items]
Revenues	51.5	42.1
Aerospace & Electronics | Commercial Aftermarket Products
Disaggregation of Revenue [Line Items]
Revenues	38.2	32.6
Aerospace & Electronics | Military Aftermarket Products
Disaggregation of Revenue [Line Items]
Revenues	14.6	11.0
Engineered Materials
Disaggregation of Revenue [Line Items]
Revenues	59.6	69.7
Engineered Materials | FRP - Recreational Vehicles
Disaggregation of Revenue [Line Items]
Revenues	26.6	37.4
Engineered Materials | FRP - Building Products
Disaggregation of Revenue [Line Items]
Revenues	23.6	23.8
Engineered Materials | FRP - Transportation
Disaggregation of Revenue [Line Items]
Revenues	$ 9.4	$ 8.5