Equity (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Balance	$ (710.6)	$ (238.8)
Net loss attributable to Diebold Nixdorf, Incorporated	(92.8)	(132.7)
Net loss	(93.4)	(131.9)
Other comprehensive loss	(105.5)	0.8
Share-based compensation issued	0.0	0.0
Share-based compensation expense	4.0	9.3
Treasury shares	(4.6)	(1.1)
Reclassification of guaranteed dividend to accrued liabilities		(0.6)
Reclassifications of redeemable noncontrolling interest		10.6
Divestitures, net	(4.8)	(3.0)
Balance	(506.3)	(122.9)
Common Stock [Member]
Balance	116.7	114.9
Share-based compensation issued	1.4	0.7
Balance	115.3	114.2
Additional Paid-in Capital [Member]
Balance	776.5	761.0
Share-based compensation issued	(1.4)	(0.7)
Share-based compensation expense	4.0	9.3
Reclassifications of redeemable noncontrolling interest		10.6
Balance	773.9	741.8
Retained Earnings [Member]
Balance	(565.1)	(263.7)
Net loss attributable to Diebold Nixdorf, Incorporated	(92.8)	(132.7)
Balance	(472.3)	(131.0)
Treasury Stock [Member]
Balance	(576.5)	(571.5)
Treasury shares	4.6	(1.1)
Balance	(571.9)	(570.4)
AOCI Attributable to Parent
Balance	(479.5)	(306.2)
Other comprehensive loss	(104.2)	(1.9)
Balance	(375.3)	(304.3)
Parent [Member]
Balance	(727.9)	(265.5)
Net loss attributable to Diebold Nixdorf, Incorporated	(92.8)	(132.7)
Other comprehensive loss	(104.2)	(1.9)
Share-based compensation issued	0.0	0.0
Share-based compensation expense	4.0	9.3
Treasury shares	(4.6)	(1.1)
Reclassification of guaranteed dividend to accrued liabilities		0.0
Reclassifications of redeemable noncontrolling interest		10.6
Divestitures, net	0.0	0.0
Balance	(530.3)	(149.7)
Noncontrolling Interest [Member]
Balance	17.3	26.7
Net loss	(0.6)	0.8
Other comprehensive loss	(1.3)	2.7
Reclassification of guaranteed dividend to accrued liabilities		(0.6)
Reclassifications of redeemable noncontrolling interest		0.0
Divestitures, net	(4.8)	(3.0)
Balance	$ 24.0	$ 26.8