Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2018		Jun. 30, 2017	Jun. 30, 2018		Jun. 30, 2017
Net income (loss)	$ (133.4)		$ (23.6)	$ (196.7)		$ (75.8)
Other comprehensive income (loss), net of tax
Other comprehensive income (loss), net of tax	(69.5)		85.8	(78.7)		130.7
Comprehensive income (loss)	(202.9)		62.2	(275.4)		54.9
Less: comprehensive income attributable to noncontrolling interests	3.3		8.7	10.9		15.3
Comprehensive income (loss) attributable to Diebold Nixdorf, Incorporated	(206.2)		53.5	(286.3)		39.6
Translation adjustment
Other comprehensive income (loss), net of tax
Translation adjustment and foreign currency hedges	(81.3)		79.9	(63.1)		129.2
Foreign currency hedges (net of tax of $(2.2), $(2.5), $(1.1) and $(1.3), respectively)
Other comprehensive income (loss), net of tax
Translation adjustment and foreign currency hedges	8.7		5.6	5.9		3.4
Interest rate hedges
Other comprehensive income (loss), net of tax
Net gain (loss) recognized in other comprehensive income (net of tax of $(0.4), $0.4, $(1.1) and $(0.4), respectively)	0.5		(0.5)	2.7		1.5
Reclassification adjustment for amounts recognized in net income	0.8		(0.1)	1.2		(0.4)
Total interest rate hedges	1.3		(0.6)	3.9		1.1
Pension and other post-retirement benefits
Other comprehensive income (loss), net of tax
Net actuarial gain (loss) amortization (net of tax of $(0.6), $(0.5), $(0.2) and $1.0, respectively)	1.8		0.9	3.6		(3.0)
Accounting Standards Update 2018-02 | AOCI Attributable to Parent
Other comprehensive income (loss), net of tax
Adoption of accounting standards	$ 0.0	[1]	$ 0.0	$ (29.0)	[1]	$ 0.0

[1] (1)Stranded tax effects reclassified from AOCI to retained earnings from the adoption of ASU 2018-02.