Commitments and Contingencies Commitments and Contingencies (Details) shares in Millions, $ in Millions	May 13, 2019 € / shares shares	Feb. 17, 2017 € / shares shares	Dec. 31, 2020 USD ($)
Loss Contingencies [Line Items]
Shares Repurchased Of Redeemable Noncontrolling Interest | shares	1.4	6.9
Indirect Tax Liability [Member]
Loss Contingencies [Line Items]
Range of possible loss, portion not accrued | $			$ 74.0
Diebold Nixdorf AG | Domination and Profit and Loss Transfer Agreement [Member]
Loss Contingencies [Line Items]
Business Acquisition, Share Price	€ 54.80	€ 55.02
Recurring Cash Compensation Per Share Net Of Tax		€ 2.82