Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Income (loss) used in basic and diluted loss per share
Net loss	$ (50.5)	$ (199.1)	$ (183.9)	$ (2.0)	$ (30.3)	$ (8.1)	$ (433.5)	$ (40.4)
Net income (loss) attributable to noncontrolling interests	(0.7)			0.1			(1.4)	0.1
Net loss attributable to Diebold Nixdorf, Incorporated	$ (49.8)			$ (2.1)			$ (432.1)	$ (40.5)
Weighted-average number of common shares used in basic and diluted loss per share (1)	79.1			78.3			78.9	78.2
Basic and diluted loss per share	$ (0.63)			$ (0.03)			$ (5.48)	$ (0.52)
Denominator
Weighted-average number of common shares used in basic and diluted loss per share (1)	79.1			78.3			78.9	78.2
Anti-dilutive shares
Incremental Shares Excluded From Dilutive Calculation Due To Resulting in Operating Loss	1.8			1.2			1.4	1.2
Anti-dilutive shares not used in calculating diluted weighted-average shares	4.1			4.0			4.2	3.5