Supplemental Guarantor Information Supplemental Guarantor Information (Condensed Consolidating Statements of Operations and Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Total net sales	$ 1,102.8	$ 509.6
Cost of sales	860.3	370.8
Gross profit	242.5	138.8
Selling and administrative expense	247.0	125.6
Research, development and engineering expense	41.4	18.5
Impairment of assets	3.1	0.0
(Gain) loss on sale of assets, net	(0.4)	0.4
Operating expense	291.1	144.5
Operating profit (loss)	(48.6)	(5.7)
Other income (expense)
Interest income	6.4	4.9
Interest expense	(30.8)	(11.5)
Foreign exchange gain (loss), net	(3.1)	(2.4)
Equity in earnings of investees	0.0	0.0
Miscellaneous, net	1.3	34.6
Income (loss) from continuing operations before taxes	(74.8)	19.9
Income tax (benefit) expense	(22.6)	(0.8)
Income (loss) from continuing operations, net of tax	(52.2)	20.7
Income (loss) from discontinued operations, net of tax	0.0	147.8
Net income (loss)	(52.2)	168.5
Net income attributable to noncontrolling interest	6.6	0.3
Net income (loss) attributable to Diebold Nixdorf, Incorporated	(58.8)	168.2
Comprehensive income (loss)	(7.3)	198.5
Less: comprehensive income (loss) attributable to noncontrolling interests	6.6	0.4
Comprehensive income (loss) attributable to Diebold Nixdorf, Incorporated	(13.9)	198.1
Parent Company [Member]
Total net sales	251.2	261.3
Cost of sales	199.8	190.7
Gross profit	51.4	70.6
Selling and administrative expense	67.1	78.1
Research, development and engineering expense	(0.1)	1.3
Impairment of assets	3.1
(Gain) loss on sale of assets, net	0.0	0.0
Operating expense	70.1	79.4
Operating profit (loss)	(18.7)	(8.8)
Other income (expense)
Interest income	0.5	0.1
Interest expense	(30.0)	(11.3)
Foreign exchange gain (loss), net	0.0	(1.7)
Equity in earnings of investees	(26.4)	15.7
Miscellaneous, net	0.7	33.2
Income (loss) from continuing operations before taxes	(73.9)	27.2
Income tax (benefit) expense	(15.1)	(3.0)
Income (loss) from continuing operations, net of tax	(58.8)	30.2
Income (loss) from discontinued operations, net of tax	0.0	138.0
Net income (loss)	(58.8)	168.2
Net income attributable to noncontrolling interest	0.0	0.0
Net income (loss) attributable to Diebold Nixdorf, Incorporated	(58.8)	168.2
Comprehensive income (loss)	(13.9)	196.0
Less: comprehensive income (loss) attributable to noncontrolling interests	0.0	0.0
Comprehensive income (loss) attributable to Diebold Nixdorf, Incorporated	(13.9)	196.0
Guarantor Subsidiaries [Member]
Total net sales	4.9	25.7
Cost of sales	5.9	26.9
Gross profit	(1.0)	(1.2)
Selling and administrative expense	2.9	2.6
Research, development and engineering expense	9.8	12.1
Impairment of assets	0.0
(Gain) loss on sale of assets, net	0.1	0.1
Operating expense	12.8	14.8
Operating profit (loss)	(13.8)	(16.0)
Other income (expense)
Interest income	0.1	0.2
Interest expense	0.0	(0.1)
Foreign exchange gain (loss), net	0.0	0.0
Equity in earnings of investees	0.0	0.0
Miscellaneous, net	1.9	1.5
Income (loss) from continuing operations before taxes	(11.8)	(14.4)
Income tax (benefit) expense	(4.1)	(2.8)
Income (loss) from continuing operations, net of tax	(7.7)	(11.6)
Income (loss) from discontinued operations, net of tax	0.0	0.0
Net income (loss)	(7.7)	(11.6)
Net income attributable to noncontrolling interest	0.0	0.0
Net income (loss) attributable to Diebold Nixdorf, Incorporated	(7.7)	(11.6)
Comprehensive income (loss)	(7.7)	(9.4)
Less: comprehensive income (loss) attributable to noncontrolling interests	0.0	0.0
Comprehensive income (loss) attributable to Diebold Nixdorf, Incorporated	(7.7)	(9.4)
Non-Guarantor Subsidiaries [Member]
Total net sales	851.0	247.9
Cost of sales	658.9	178.1
Gross profit	192.1	69.8
Selling and administrative expense	177.0	44.9
Research, development and engineering expense	31.7	5.1
Impairment of assets	0.0
(Gain) loss on sale of assets, net	(0.5)	0.3
Operating expense	208.2	50.3
Operating profit (loss)	(16.1)	19.5
Other income (expense)
Interest income	5.8	4.6
Interest expense	0.2	(0.1)
Foreign exchange gain (loss), net	(3.1)	(0.7)
Equity in earnings of investees	0.0	0.0
Miscellaneous, net	(1.3)	(0.1)
Income (loss) from continuing operations before taxes	(14.5)	23.2
Income tax (benefit) expense	(3.4)	5.0
Income (loss) from continuing operations, net of tax	(11.1)	18.2
Income (loss) from discontinued operations, net of tax	0.0	9.8
Net income (loss)	(11.1)	28.0
Net income attributable to noncontrolling interest	6.6	0.3
Net income (loss) attributable to Diebold Nixdorf, Incorporated	(17.7)	27.7
Comprehensive income (loss)	46.2	60.7
Less: comprehensive income (loss) attributable to noncontrolling interests	6.6	0.4
Comprehensive income (loss) attributable to Diebold Nixdorf, Incorporated	39.6	60.3
Reclassifications And Eliminations [Member]
Total net sales	(4.3)	(25.3)
Cost of sales	(4.3)	(24.9)
Gross profit	0.0	(0.4)
Selling and administrative expense	0.0	0.0
Research, development and engineering expense	0.0	0.0
Impairment of assets	0.0
(Gain) loss on sale of assets, net	0.0	0.0
Operating expense	0.0	0.0
Operating profit (loss)	0.0	(0.4)
Other income (expense)
Interest income	0.0	0.0
Interest expense	(1.0)	0.0
Foreign exchange gain (loss), net	0.0	0.0
Equity in earnings of investees	26.4	(15.7)
Miscellaneous, net	0.0	0.0
Income (loss) from continuing operations before taxes	25.4	(16.1)
Income tax (benefit) expense	0.0	0.0
Income (loss) from continuing operations, net of tax	25.4	(16.1)
Income (loss) from discontinued operations, net of tax	0.0	0.0
Net income (loss)	25.4	(16.1)
Net income attributable to noncontrolling interest	0.0	0.0
Net income (loss) attributable to Diebold Nixdorf, Incorporated	25.4	(16.1)
Comprehensive income (loss)	(31.9)	(48.8)
Less: comprehensive income (loss) attributable to noncontrolling interests	0.0	0.0
Comprehensive income (loss) attributable to Diebold Nixdorf, Incorporated	$ (31.9)	$ (48.8)