Segment Information - Revenue by Service/Product Solution (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenue from External Customer [Line Items]
Net sales	$ 829.8	$ 943.9
Eurasia Banking
Revenue from External Customer [Line Items]
Net sales	277.9	327.8
Americas Banking Segment [Member]
Revenue from External Customer [Line Items]
Net sales	284.8	311.7
Retail
Revenue from External Customer [Line Items]
Net sales	267.1	304.4
Service [Member]
Revenue from External Customer [Line Items]
Net sales	526.2	573.6
Service [Member] | Eurasia Banking
Revenue from External Customer [Line Items]
Net sales	159.5	189.6
Service [Member] | Americas Banking Segment [Member]
Revenue from External Customer [Line Items]
Net sales	224.2	227.7
Service [Member] | Retail
Revenue from External Customer [Line Items]
Net sales	142.5	156.3
Product [Member]
Revenue from External Customer [Line Items]
Net sales	303.6	370.3
Product [Member] | Eurasia Banking
Revenue from External Customer [Line Items]
Net sales	118.4	138.2
Product [Member] | Americas Banking Segment [Member]
Revenue from External Customer [Line Items]
Net sales	60.6	84.0
Product [Member] | Retail
Revenue from External Customer [Line Items]
Net sales	$ 124.6	$ 148.1