Segment Information (Textuals) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Contract with Customer, Asset, Credit Loss Expense	$ 0.4	$ 9.7	$ 3.3	$ 20.6
Trade receivables, net	603.4		603.4		$ 737.2
Deferred revenue	318.6		318.6		$ 378.2
Impairment of assets	0.0	134.4	0.0	217.5
Deferred Revenue, Revenue Recognized			247.9
Revenue, Remaining Performance Obligation, Amount	1,700.0		1,700.0
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Non Routine Expenses Net	23.5	175.9	98.4	342.8
Impairment of assets		134.4		217.5
Legal, Acquisition, and Divestiture Fees		10.3		40.0
Diebold Nixdorf AG [Member] \| Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Purchase accounting adjustment related to amortization of acquired intangible assets	$ (22.8)	$ (28.1)	$ (71.8)	$ (88.6)

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Non Routine Expenses Net.

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Purchase Accounting Pretax Charge Amortization Expense

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount of credit loss recognized for write-down of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income.

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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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