Consolidated Statements of Equity - USD ($) shares in Millions, $ in Millions	Total	Common Shares	Additional Capital	Retained Earnings	Treasury Shares	Accumulated Other Comprehensive Income (Loss)	Total Diebold Nixdorf, Incorporated Shareholders' Equity	Non-controlling Interests
Balance (shares) at Dec. 31, 2018		91.3
Balance at Dec. 31, 2018	$ (122.9)	$ 114.2	$ 741.8	$ (131.0)	$ (570.4)	$ (304.3)	$ (149.7)	$ 26.8
Net loss	(344.6)			(341.3)			(341.3)	(3.3)
Other Comprehensive Income (Loss), Net of Tax	(72.4)					(71.0)	(71.0)	(1.4)
Restricted stock units issued, shares		0.9
Share-based compensation issued	0.1	$ 1.1	(1.0)				0.1
Share-based compensation expense	24.0		24.0				24.0
Treasury shares	(1.5)				(1.5)		(1.5)
Reclassification From Noncontrolling Interests To Redeemable Noncontrolling Interests	14.0		9.1				9.1	(4.9)
Acquisitions and divestitures, net	(3.0)							(3.0)
Balance (shares) at Dec. 31, 2019		92.2
Balance at Dec. 31, 2019	(506.3)	$ 115.3	773.9	(472.3)	(571.9)	(375.3)	(530.3)	24.0
Net loss	(267.8)			(269.1)			(269.1)	1.3
Other Comprehensive Income (Loss), Net of Tax	(39.2)					(37.6)	(37.6)	(1.6)
Restricted stock units issued, shares		1.3
Share-based compensation issued	0.0	$ 1.6	(1.6)				0.0
Share-based compensation expense	14.9		14.9				14.9
Treasury shares	(4.8)				(4.8)		(4.8)
Reclassification From Noncontrolling Interests To Redeemable Noncontrolling Interests	0.7		0.7				0.7	0.0
Distributions to noncontrolling interest holders, net	(0.9)							0.0
Balance (shares) at Dec. 31, 2020		93.5
Balance at Dec. 31, 2020	(831.7)	$ 116.9	787.9	(742.3)	(576.7)	(412.9)	(827.1)	(4.6)
Net loss	(78.1)			(78.8)			(78.8)	0.7
Other Comprehensive Income (Loss), Net of Tax	35.0					34.4	34.4	0.6
Restricted stock units issued, shares		1.1
Share-based compensation issued	0.1	$ 1.4	(1.3)				0.1
Share-based compensation expense	13.8		13.8				13.8
Treasury shares	(5.4)				(5.4)		(5.4)
Reclassification From Noncontrolling Interests To Redeemable Noncontrolling Interests	31.9		19.2				19.2	(12.7)
DistributionToNoncontrollingInterestAndEmployeeShareTrusts	(2.6)			(1.3)			(1.3)	(1.3)
Balance (shares) at Dec. 31, 2021		94.6
Balance at Dec. 31, 2021	(837.0)	$ 118.3	$ 819.6	$ (822.4)	$ (582.1)	$ (378.5)	$ (845.1)	8.1
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	$ (28.3)							$ (28.3)