Equity (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017		Sep. 30, 2016
Diebold Nixdorf, Incorporated shareholders' equity
Balance at beginning of period	$ 587.2	$ 578.3	$ 591.4		$ 412.4
Comprehensive income (loss) attributable to Diebold Nixdorf, Incorporated	(22.5)	(107.0)	17.1		88.7
Common shares	0.0	12.4	0.7		12.8
Additional capital	15.4	271.6	(9.3)		281.4
Treasury shares	(0.3)	(0.1)	(4.8)		(2.1)
Dividends paid	(7.6)	(19.0)	(22.9)		(57.0)
Balance at end of period	572.2	736.2	572.2		736.2
Noncontrolling interests
Balance at beginning of period	37.5	23.7	433.4		23.1
Comprehensive income attributable to noncontrolling interests, net	8.4	386.9	23.7	[1]	387.5
Reclassification From Noncontrolling Interests To Redeemable Noncontrolling Interests	0.0	0.0	(386.7)		0.0
Minority Interest Decrease From Reclassification of Guaranteed Dividends To Other Current Liabilities	(6.4)	0.0	(18.1)		0.0
Distributions to noncontrolling interest holders	0.0	0.0	12.8		0.0
Balance at end of period	$ 39.5	$ 410.6	$ 39.5		$ 410.6

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