Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Loss used in basic and diluted loss per share
Net (loss) income	$ (14.0)	$ (111.5)
Net (loss) income attributable to noncontrolling interests	0.6	(0.4)
Net loss attributable to Diebold Nixdorf, Incorporated	$ (14.6)	$ (111.1)
Denominator
Weighted-average number of shares of common stock used in basic loss per share (in shares)	37.6	79.3
Weighted-average number of shares of common stock used in diluted loss per share (in shares)	37.6	79.3
Net (loss) income attributable to Diebold Nixdorf, Incorporated
Basic loss per share (in dollars per share)	$ (0.39)	$ (1.40)
Diluted loss per share (in dollars per share)	$ (0.39)	$ (1.40)
Anti-dilutive shares
Anti-dilutive shares not used in calculating diluted weighted-average shares	1.1	2.2
Incremental shares, excluded from dilutive calculation, due to resulting in operating loss (in shares)		2.1