Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Document Period End Date			Jun. 30, 2019
Revenues	$ 841.6	$ 851.0	$ 1,673.3	$ 1,650.0
Fluid Handling
Disaggregation of Revenue [Line Items]
Revenues	290.6	276.9	564.3	543.5
Fluid Handling | Process Valves and Related Products
Disaggregation of Revenue [Line Items]
Revenues	182.4	175.4	350.4	340.4
Fluid Handling | Commercial Valves
Disaggregation of Revenue [Line Items]
Revenues	83.6	79.2	164.4	159.7
Fluid Handling | Other Products
Disaggregation of Revenue [Line Items]
Revenues	24.6	22.3	49.5	43.4
Payment & Merchandising Technologies
Disaggregation of Revenue [Line Items]
Revenues	291.0	324.3	594.8	616.7
Payment & Merchandising Technologies | Payment Acceptance and Dispensing Products
Disaggregation of Revenue [Line Items]
Revenues	154.0	155.3	312.7	300.7
Payment & Merchandising Technologies | Banknotes and Security Products
Disaggregation of Revenue [Line Items]
Revenues	88.5	121.6	187.1	221.4
Payment & Merchandising Technologies | Merchandising Equipment
Disaggregation of Revenue [Line Items]
Revenues	48.5	47.4	95.0	94.6
Aerospace & Electronics
Disaggregation of Revenue [Line Items]
Revenues	204.5	187.2	399.1	357.5
Aerospace & Electronics | Commercial Original Equipment
Disaggregation of Revenue [Line Items]
Revenues	91.3	86.2	181.7	170.8
Aerospace & Electronics | Military and Other Original Equipment
Disaggregation of Revenue [Line Items]
Revenues	55.4	48.7	106.9	90.7
Aerospace & Electronics | Commercial Aftermarket Products
Disaggregation of Revenue [Line Items]
Revenues	41.4	37.5	79.6	70.2
Aerospace & Electronics | Military Aftermarket Products
Disaggregation of Revenue [Line Items]
Revenues	16.4	14.8	30.9	25.8
Engineered Materials
Disaggregation of Revenue [Line Items]
Revenues	55.5	62.6	115.1	132.3
Engineered Materials | FRP - Recreational Vehicles
Disaggregation of Revenue [Line Items]
Revenues	22.2	31.2	48.7	68.5
Engineered Materials | FRP - Building Products
Disaggregation of Revenue [Line Items]
Revenues	24.0	23.4	47.7	47.2
Engineered Materials | FRP - Transportation
Disaggregation of Revenue [Line Items]
Revenues	$ 9.3	$ 8.0	$ 18.7	$ 16.6