Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Loss used in basic and diluted loss per share
Net loss	$ (111.5)	$ (183.9)
Net loss attributable to noncontrolling interests	(0.4)	(0.8)
Net loss attributable to Diebold Nixdorf, Incorporated	$ (111.1)	$ (183.1)
Weighted-average number of common shares used in basic and diluted loss per share (1)	79.3	78.7
Basic and diluted loss per share	$ (1.40)	$ (2.33)
Denominator
Weighted-average number of common shares used in basic and diluted loss per share (1)	79.3	78.7
Anti-dilutive shares
Incremental Shares Excluded From Dilutive Calculation Due To Resulting in Operating Loss	2.1	1.4
Anti-dilutive shares not used in calculating diluted weighted-average shares	2.2	4.0