EARNINGS (LOSS) PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
	Dec. 31, 2023	Aug. 12, 2023	Dec. 31, 2022	Dec. 31, 2021
Income (loss) used in basic and diluted loss per share
Net income (loss)	$ 19.1	$ 1,357.5	$ (585.6)	$ (78.1)
Net income (loss) income attributable to noncontrolling interests	1.3	(0.8)	(4.2)	0.7
Net income (loss) attributable to Diebold Nixdorf, Incorporated	$ 17.8	$ 1,358.3	$ (581.4)	$ (78.8)
Denominator
Weighted-average number of shares of common stock used in basic earnings (loss) per share (in shares)	37.6	79.7	79.0	78.3
Effect of dilutive shares (in shares)	0.0	1.7	0.0	0.0
Weighted-average number of shares used in diluted earnings (loss) per share (in shares)	37.6	81.4	79.0	78.3
Net income (loss) per share attributable to Diebold Nixdorf, Incorporated
Basic and diluted income (loss) per share (in dollars per share)	$ 0.47	$ 17.04	$ (7.36)	$ (1.01)
Diluted earnings income (loss) per share (in dollars per share)	$ 0.47	$ 16.69	$ (7.36)	$ (1.01)
Anti-dilutive shares
Anti-dilutive shares not used in calculating diluted weighted-average shares (in shares)	0.0	2.1	4.2	3.9
Incremental shares, excluded from dilutive calculation, due to resulting in operating loss (in shares)			1.5	1.2