Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Net sales	$ 833.5	$ 686.5	$ 2,409.5	$ 2,077.6
Process Flow Technologies
Disaggregation of Revenue [Line Items]
Net sales	299.1	252.3	897.9	748.2
Process Flow Technologies | Process Valves and Related Products
Disaggregation of Revenue [Line Items]
Net sales	176.6	153.9	535.4	471.7
Process Flow Technologies | Commercial Valves
Disaggregation of Revenue [Line Items]
Net sales	95.8	76.1	283.3	210.3
Process Flow Technologies | Pumps and Systems
Disaggregation of Revenue [Line Items]
Net sales	26.7	22.3	79.2	66.2
Process Flow Technologies | Outside
Disaggregation of Revenue [Line Items]
Net sales	299.1	252.3	897.9	748.2
Payment & Merchandising Technologies
Disaggregation of Revenue [Line Items]
Net sales	365.8	277.2	1,031.4	822.1
Payment & Merchandising Technologies | Payment Acceptance and Dispensing Products
Disaggregation of Revenue [Line Items]
Net sales	206.0	161.6	588.3	505.7
Payment & Merchandising Technologies | Banknotes and Security Products
Disaggregation of Revenue [Line Items]
Net sales	159.8	115.6	443.1	316.4
Payment & Merchandising Technologies | Outside
Disaggregation of Revenue [Line Items]
Net sales	365.8	277.2	1,031.4	822.1
Aerospace & Electronics
Disaggregation of Revenue [Line Items]
Net sales	168.6	157.0	480.2	507.3
Aerospace & Electronics | Commercial Original Equipment
Disaggregation of Revenue [Line Items]
Net sales	62.2	47.5	170.5	180.0
Aerospace & Electronics | Military and Other Original Equipment
Disaggregation of Revenue [Line Items]
Net sales	58.4	70.9	184.0	196.8
Aerospace & Electronics | Commercial Aftermarket Products
Disaggregation of Revenue [Line Items]
Net sales	30.2	20.2	75.1	74.4
Aerospace & Electronics | Military Aftermarket Products
Disaggregation of Revenue [Line Items]
Net sales	17.8	18.4	50.6	56.1
Aerospace & Electronics | Outside
Disaggregation of Revenue [Line Items]
Net sales	$ 168.6	$ 157.0	$ 480.2	$ 507.3