Equity (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017		Jun. 30, 2016
Equity [Abstract]
Document Period End Date			Jun. 30, 2017
Diebold Nixdorf, Incorporated shareholders' equity
Balance at beginning of period	$ 533.1	$ 595.6	$ 591.4		$ 412.4
Comprehensive income (loss) attributable to Diebold Nixdorf, Incorporated	53.5	(2.4)	39.6		195.7
Common shares	0.1	0.1	0.7		0.4
Additional capital	8.1	4.5	(24.7)		9.8
Treasury shares	0.1	(0.3)	(4.5)		(2.0)
Dividends paid	(7.7)	(19.2)	(15.3)		(38.0)
Balance at end of period	587.2	578.3	587.2		578.3
Noncontrolling interests
Balance at beginning of period	34.8	23.5	433.4		23.1
Comprehensive income attributable to noncontrolling interests, net	8.7	0.2	15.3	[1]	0.6
Reclassification From Noncontrolling Interests To Redeemable Noncontrolling Interests			(386.7)		0.0
Minority Interest Decrease From Reclassification of Guaranteed Dividends To Other Current Liabilities			(11.7)		0.0
Distributions to noncontrolling interest holders	0.0	0.0	12.8		0.0
Balance at end of period	$ 37.5	$ 23.7	$ 37.5		$ 23.7

[1] The decrease for the six months ended June 30, 2017 is primarily attributable to the redemption value adjustment to the redeemable noncontrolling interest.