Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2017		Sep. 30, 2016		Sep. 30, 2017		Sep. 30, 2016
Amounts attributable to Diebold Nixdorf, Incorporated
Income (loss) from continuing operations, net of tax	$ (28.8)		$ (97.2)		$ (104.6)		$ (97.3)
Net income attributable to noncontrolling interest	6.6		0.5		20.2		1.6
Loss before discontinued operations, net of tax	(35.4)		(97.7)		(124.8)		(98.9)
Income (loss) from discontinued operations, net of tax	0.0		(4.6)		0.0		143.7
Net income (loss) attributable to Diebold Nixdorf, Incorporated	$ (35.4)		$ (102.3)		$ (124.8)		$ 44.8
Denominator (in millions)
Weighted-average number of common shares used in basic earnings per share	75.5		70.9		75.4		67.0
Effect of dilutive shares	0.0	[1]	0.0	[1]	0.0	[1]	0.6
Weighted-average number of shares used in diluted earnings per share	75.5		70.9		75.4		67.6
Basic earnings (loss) per share
Loss from continuing operations, net of tax	$ (0.47)		$ (1.38)		$ (1.66)		$ (1.48)
Income (loss) from discontinued operations, net of tax	0.00		(0.06)		0.00		2.15
Net income (loss) attributable to Diebold Nixdorf, Incorporated	(0.47)		(1.44)		(1.66)		0.67
Diluted earnings (loss) per share
Loss from continuing operations, net of tax	(0.47)		(1.38)		(1.66)		(1.46)
Income (loss) from discontinued operations, net of tax	0.00		(0.06)		0.00		2.12
Net income (loss) attributable to Diebold Nixdorf, Incorporated	$ (0.47)		$ (1.44)		$ (1.66)		$ 0.66
Anti-dilutive shares (in milllions)
Anti-dilutive shares not used in calculating diluted weighted-average	2.8		2.1		2.6		2.2
Incremental Shares Excluded From Dilutive Calculation Due To Resulting in Operating Loss	0.8		0.6		0.7

[1] Incremental shares of 0.8 and 0.6 shares for the three months ended September 30, 2017 and 2016, respectively, and 0.7 shares for the nine months ended September 30, 2017, were excluded from the computation of diluted earnings (loss) per share because their effect is anti-dilutive due to the net loss attributable to Diebold Nixdorf, Incorporated.