Equity (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	$ 1,025.7	$ (1,473.6)
Net loss	(14.0)	(111.5)
Other comprehensive (loss) income	(38.0)	8.5
Share-based compensation issued		0.0
Share-based compensation expense	1.9	1.3
Distribution to noncontrolling interest holders, net	(3.4)
Treasury shares		(0.8)
Balance	1,079.2	(1,371.1)
Total Diebold Nixdorf, Incorporated Shareholders' Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	1,013.1	(1,485.2)
Net loss	(14.6)	(111.1)
Other comprehensive (loss) income	(38.0)	6.3
Share-based compensation expense	1.9	1.3
Treasury shares		(0.8)
Balance	1,063.8	(1,380.9)
Common Shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	0.4	120.8
Share-based compensation issued		1.0
Balance	0.4	119.8
Additional Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	1,040.6	831.8
Share-based compensation issued		(1.0)
Share-based compensation expense	1.9	1.3
Balance	1,038.7	831.5
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	2.5	(1,517.8)
Net loss	(14.6)	(111.1)
Balance	17.1	(1,406.7)
Treasury Shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	0.0	(586.4)
Treasury shares		(0.8)
Balance	0.0	(585.6)
Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	(30.4)	(353.7)
Other comprehensive (loss) income	(38.0)	6.3
Balance	7.6	(360.0)
Equity Warrants
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	0.0	20.1
Balance	0.0	20.1
Non-controlling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	12.6	11.6
Net loss	0.6	(0.4)
Other comprehensive (loss) income		2.2
Distribution to noncontrolling interest holders, net	(3.4)
Balance	$ 15.4	$ 9.8