Equity (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022	Dec. 31, 2021
Balance	$ (2,130.6)	$ (1,473.6)	$ (1,247.2)	$ (1,008.6)	$ (2,130.6)	$ (1,247.2)
Net loss attributable to Diebold Nixdorf, Incorporated	(677.1)		(199.2)		(788.2)	(382.3)
Net loss	(677.3)	(111.5)	(199.1)	(183.9)	(788.8)	(383.0)
Other comprehensive loss	19.6	8.5	(44.5)	13.9	28.1	(30.6)
Share-based compensation issued	0.1	0.0	0.2	0.0
Share-based compensation expense	0.8	1.3	5.2	1.7
Treasury shares	0.0	(0.8)	0.0	(3.3)
Balance	(1,473.6)	(1,371.1)	(1,008.6)	(837.0)	(1,371.1)	(837.0)
Warrants and Rights Outstanding	20.1	20.1		0.0	20.1		$ 20.1	$ 0.0
Common Stock [Member]
Balance	121.2	120.8	119.6	119.5	121.2	119.6
Share-based compensation issued	(0.4)	(1.0)	(0.1)	(1.2)
Balance	120.8	119.8	119.5	118.3	119.8	118.3
Additional Paid-in Capital [Member]
Balance	832.1	831.8	825.0	820.1	832.1	825.0
Share-based compensation issued	(0.5)	(1.0)	(0.3)	(1.2)
Share-based compensation expense	0.8	1.3	5.2	1.7
Balance	831.8	831.5	820.1	819.6	831.5	819.6
Retained Earnings [Member]
Balance	(2,194.9)	(1,517.8)	(1,204.7)	(1,005.5)	(2,194.9)	(1,204.7)
Net loss attributable to Diebold Nixdorf, Incorporated	(677.1)	(111.1)	(199.2)	(183.1)	(788.2)	(382.3)
Balance	(1,517.8)	(1,406.7)	(1,005.5)	(822.4)	(1,406.7)	(822.4)
Treasury Stock, Common
Balance	(586.4)	(586.4)	(585.4)	(585.4)	(586.4)	(585.4)
Treasury shares	0.0	(0.8)	0.0	(3.3)
Balance	(586.4)	(585.6)	(585.4)	(582.1)	(585.6)	(582.1)
AOCI Attributable to Parent
Balance	(327.5)	(353.7)	(412.2)	(365.4)	(327.5)	(412.2)
Other comprehensive loss	26.2	6.3	(46.8)	13.1
Balance	(353.7)	(360.0)	(365.4)	(378.5)	(360.0)	(378.5)
Parent [Member]
Balance	(2,135.4)	(1,485.2)	(1,257.7)	(1,016.7)	(2,135.4)	(1,257.7)
Net loss attributable to Diebold Nixdorf, Incorporated	(677.1)	(111.1)	(199.2)	(183.1)
Other comprehensive loss	26.2	6.3	(46.8)	13.1
Share-based compensation issued	0.1		0.2
Share-based compensation expense	0.8	1.3	5.2	1.7
Treasury shares	0.0	(0.8)	0.0	(3.3)
Balance	(1,485.2)	(1,380.9)	(1,016.7)	(845.1)	(1,380.9)	(845.1)
Noncontrolling Interest [Member]
Balance	4.8	11.6	10.5	8.1	4.8	10.5
Net loss	(0.2)	(0.4)	0.1	(0.8)
Other comprehensive loss	(6.6)	2.2	2.3	0.8
Balance	$ 11.6	$ 9.8	$ 8.1	$ 8.1	$ 9.8	$ 8.1