Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended	2 Months Ended	3 Months Ended					7 Months Ended	9 Months Ended
	Aug. 11, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Aug. 11, 2023	Sep. 30, 2022
Income (loss) used in basic and diluted loss per share
Net income (loss)	$ 2,146.3	$ (25.8)	$ (677.3)	$ (111.5)	$ (50.5)	$ (199.1)	$ (183.9)	$ 1,357.5	$ (433.5)
Net income (loss) attributable to noncontrolling interests	(0.2)	0.7			(0.7)			(0.8)	(1.4)
Net (loss) income attributable to Diebold Nixdorf, Incorporated	$ 2,146.5	$ (26.5)			$ (49.8)			$ 1,358.3	$ (432.1)
Denominator
Weighted-average number of shares of common stock used in basic earnings (loss) per share (in shares)	80.0	37.6			79.1			79.7	78.9
Effect of dilutive shares (in shares)	1.4	0.0			0.0			1.7	0.0
Weighted-average number of shares used in diluted earnings (loss) per share (in shares)	81.4	37.6			79.1			81.4	78.9
Net income (loss) attributable to Diebold Nixdorf, Incorporated
Basic earnings (loss) per share (in dollars per share)	$ 26.83	$ (0.70)			$ (0.63)			$ 17.04	$ (5.48)
Diluted earnings (loss) per share (in dollars per share)	$ 26.37	$ (0.70)			$ (0.63)			$ 16.69	$ (5.48)
Anti-dilutive shares
Anti-dilutive shares not used in calculating diluted weighted-average shares	1.9	0.0			4.1			2.1	4.2