Derivative Instruments and Hedging Activities (Textuals) (Details) € in Millions, £ in Millions, $ in Millions							3 Months Ended		9 Months Ended
		Jul. 23, 2018 USD ($)	Jun. 21, 2018 USD ($)	Sep. 21, 2017 USD ($)	May 09, 2017 EUR (€)	Mar. 30, 2017 EUR (€)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 GBP (£)	Sep. 30, 2018 EUR (€)	Dec. 31, 2017 USD ($)	Nov. 30, 2016 USD ($)	Aug. 15, 2016 EUR (€)	Mar. 31, 2006 EUR (€)
Derivative [Line Items]
Total net sales							$ 1,119.0	$ 1,122.7	$ 3,288.8	$ 3,359.4
Cost of Services							451.6	470.7	1,377.5	1,362.1
Derivative Instruments and Hedging Activities (Textuals)
Fair value of investment hedge contracts							2.4		$ 2.4				$ 2.0
Document Period End Date									Sep. 30, 2018
(Loss) gain on investment hedge derivative							2.7	(2.7)	$ 13.6	(4.1)
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net							(0.5)	12.0	$ (4.9)	37.8
Maximum maturities of Foreign exchange forward contracts									24 months
Fair value of non-designated foreign exchange forward contracts							(3.3)		$ (3.3)				(4.9)
Interest Expense							$ 45.2	27.7	$ 99.6	90.7
Currency Forward Agreements EUR to USD [Member]
Derivative Instruments and Hedging Activities (Textuals)
Derivative, Number of Instruments Held							1		1		1	1
Notional amount of pay-fixed receive-variable interest rate swap							$ 2.8		$ 2.8			€ 3.5
Cash Flow Hedging [Member]
Derivative Instruments and Hedging Activities (Textuals)
Derivative, Number of Instruments Held							13		13		13	13
Notional amount of pay-fixed receive-variable interest rate swap											£ 31.0	€ 34.7
Foreign exchange forward contracts
Derivative [Line Items]
Total net sales							$ (0.4)	0.0	$ 2.4	0.0
Cost of Services							(0.7)	0.0	(0.6)	0.0
Interest rate hedges
Derivative Instruments and Hedging Activities (Textuals)
Notional amount of pay-fixed receive-variable interest rate swap														$ 400.0		€ 50.0
Interest Expense							0.7	1.5	1.8	3.6
Interest Rate Derivatives, at Fair Value, Net							14.3		14.3				9.8
Diebold Nixdorf AG [Member] | Interest rate hedges
Derivative Instruments and Hedging Activities (Textuals)
Interest Expense							$ 0.5		$ 1.5
Derivative, Fixed Interest Rate							2.97%		2.97%		2.97%	2.97%
Interest Rate Derivatives, at Fair Value, Net							$ (5.4)		$ (5.4)				$ (5.5)
Term Loan B EUR [Member]
Derivative Instruments and Hedging Activities (Textuals)
Decrease In Amount Designated As Net Investment Hedge		$ 180.2	$ 0.0	$ 101.1	€ 66.8	€ 130.6
Derivative Liability | €															€ (350.0)
Debt Instrument, Interest Rate Terms	[1]						EURIBOR(ii) + 3.00%
Accumulated Net Gain (Loss) from Interest Rate Hedge [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative Instruments and Hedging Activities (Textuals)
Interest Expense							$ (1.0)	$ 0.0	(2.1)	$ 0.4
Accounting Standards Update 2017-12 [Member]
Derivative [Line Items]
Total net sales							(0.4)		2.4
Cost of Services							$ (0.7)		$ (0.6)

[1] EURIBOR with a floor of 0.0%