Segment Information (Textuals) (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Document Period End Date				Sep. 30, 2018
Goodwill, Impairment Loss	$ 109.3	$ 90.0		$ 199.3
Impairment of assets	109.3		$ 0.0	199.3	$ 3.1
Legal, Acquisition, and Divestiture Fees			19.8		16.1
Business Combination, Integration Related Costs	10.3			40.0	54.8
Cost of sales	890.7		882.7	2,601.1	2,641.1
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Non Routine Expenses Net	152.0		72.7	322.5	206.2
Diebold Nixdorf AG [Member]
Segment Reporting Information [Line Items]
Purchase accounting adjustment related to amortization of acquired intangible assets	$ (28.2)		(34.9)	$ (88.7)	(99.5)
Purchase accounting adjustment related to acquired deferred revenue			$ 0.0		$ 30.4