Segment Information (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
Summary of Segment Information
Net sales		$ 1,151.6	$ 1,078.8	$ 1,150.2	$ 1,028.1	$ 1,289.8	$ 1,119.0	$ 1,105.6	$ 1,064.2	$ 4,408.7	$ 4,578.6	$ 4,609.3
Segment operating profit										(26.6)	(325.6)	(93.5)
Impairment of assets										(30.2)	(180.2)	(3.1)
Restructuring charges										(50.2)	(65.0)	(49.4)
Other expense										(202.3)	(152.7)	(98.4)
Income (loss) from continuing operations before taxes										(228.9)	(478.3)	(191.9)
Eurasia Banking Segment [Member]
Summary of Segment Information
Net sales										1,649.8	1,800.2	1,903.4
Americas Banking Segment [Member]
Summary of Segment Information
Net sales										1,604.1	1,515.7	1,525.6
Retail Segment [Member]
Summary of Segment Information
Net sales										1,154.8	1,262.7	1,180.3
Operating Segments [Member]
Summary of Segment Information
Net sales										4,408.7	4,578.6	4,609.3
Revenue from Related Parties										183.8	174.9	130.9
Segment operating profit										347.3	214.4	282.8
Operating Segments [Member] | Eurasia Banking Segment [Member]
Summary of Segment Information
Net sales										1,649.8	1,800.2	1,903.4
Revenue from Related Parties										168.3	161.1	105.0
Segment operating profit										169.3	150.1	126.8
Operating Segments [Member] | Americas Banking Segment [Member]
Summary of Segment Information
Net sales										1,604.1	1,515.7	1,525.6
Revenue from Related Parties										15.5	13.8	25.9
Segment operating profit										119.7	17.2	68.1
Operating Segments [Member] | Retail Segment [Member]
Summary of Segment Information
Net sales										1,154.8	1,262.7	1,180.3
Segment operating profit										58.3	47.1	87.9
Corporate, Non-Segment [Member]
Summary of Segment Information
Corporate charges not allocated back to segments	[1]									(79.4)	(52.1)	(62.6)
Segment Reconciling Items [Member]
Summary of Segment Information
Impairment of assets										(30.2)	(180.2)	(3.1)
Restructuring charges										(50.2)	(65.0)	(49.4)
Net non-routine expense										(214.1)	(242.7)	(261.2)
Corporate And Reconciling Items [Member]
Summary of Segment Information
Reconciliation of Operating Profit (Loss) from Segments to Consolidated										$ (373.9)	$ (540.0)	$ (376.3)

[1] Corporate charges not allocated to segments include headquarter-based costs associated with procurement, human resources, compensation and benefits, finance and accounting, global development/engineering, global strategy/mergers and acquisitions, global IT, tax, treasury and legal.