Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Net loss	$ (55.3)	$ (128.3)	$ (187.2)	$ (193.9)
Other comprehensive income (loss), net of tax
Other comprehensive loss, net of tax	16.1	(69.5)	17.7	(78.7)
Comprehensive loss	(39.2)	(197.8)	(169.5)	(272.6)
Less: comprehensive income attributable to noncontrolling interests	(7.5)	3.3	(4.0)	10.9
Comprehensive loss attributable to Diebold Nixdorf, Incorporated	(31.7)	(201.1)	(165.5)	(283.5)
Other Comprehensive Income - Other [Member]
Other Comprehensive Income, Other, Net of Tax	0.0	0.0	0.1	0.0
Translation adjustment
Other comprehensive income (loss), net of tax
Translation adjustment and foreign currency hedges	14.0	(81.3)	18.4	(63.1)
Foreign currency hedges (net of tax of $(0.4), $(2.2), $0.0 and $(1.1), respectively)
Other comprehensive income (loss), net of tax
Translation adjustment and foreign currency hedges	0.7	8.7	0.1	5.9
Interest rate hedges
Other comprehensive income (loss), net of tax
Net (loss) gain recognized in other comprehensive income (net of tax of $0.7, $(0.4), $1.2 and $(1.2), respectively)	(3.4)	0.5	(5.7)	2.7
Reclassification adjustment for amounts recognized in net income	0.5	0.8	1.0	1.2
Total interest rate hedges	(2.9)	1.3	(4.7)	3.9
Pension and other post-retirement benefits
Other comprehensive income (loss), net of tax
Net actuarial (loss) gain amortization (net of tax of $(0.4), $(0.6), $(0.7) and $(0.2), respectively)	4.3	1.8	3.8	3.6
Accounting Standards Update 2018-02 | AOCI Attributable to Parent
Other comprehensive income (loss), net of tax
Adoption of accounting standard	$ 0.0	$ 0.0	$ 0.0	$ (29.0)