Supplemental Guarantor Information Supplemental Guarantor Information (Condensed Consolidating Statements of Operations and Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Total net sales	$ 1,133.9	$ 580.0	$ 2,236.7	$ 1,089.6
Cost of sales	896.1	424.9	1,756.4	795.7
Gross profit	237.8	155.1	480.3	293.9
Selling and administrative expense	236.8	127.3	483.8	252.9
Research, development and engineering expense	38.8	17.6	80.2	36.1
Impairment of assets	0.0	0.0	3.1	0.0
(Gain) loss on sale of assets, net	(7.7)	(0.1)	(8.1)	0.3
Operating expense	267.9	144.8	559.0	289.3
Operating profit (loss)	(30.1)	10.3	(78.7)	4.6
Other income (expense)
Interest income	5.1	6.3	11.5	11.2
Interest expense	(32.2)	(24.3)	(63.0)	(35.8)
Foreign exchange gain (loss), net	(4.6)	(1.2)	(7.7)	(3.6)
Equity in earnings of investees	0.0	0.0	0.0	0.0
Miscellaneous, net	1.9	(26.8)	3.2	7.8
Income (loss) from continuing operations before taxes	(59.9)	(35.7)	(134.7)	(15.8)
Income tax (benefit) expense	(36.3)	(14.9)	(58.9)	(15.7)
Income (loss) from continuing operations, net of tax	(23.6)	(20.8)	(75.8)	(0.1)
Income from discontinued operations, net of tax	0.0	0.5	0.0	148.3
Net income (loss)	(23.6)	(20.3)	(75.8)	148.2
Net income attributable to noncontrolling interest	7.0	0.8	13.6	1.1
Net income (loss) attributable to Diebold Nixdorf, Incorporated	(30.6)	(21.1)	(89.4)	147.1
Comprehensive income (loss)	62.2	(2.2)	54.9	196.3
Less: comprehensive income (loss) attributable to noncontrolling interests	8.7	0.2	15.3	0.6
Comprehensive income (loss) attributable to Diebold Nixdorf, Incorporated	53.5	(2.4)	39.6	195.7
Reportable Legal Entities [Member] | Parent Company [Member]
Total net sales	253.8	289.6	505.0	550.8
Cost of sales	198.6	214.3	398.4	405.0
Gross profit	55.2	75.3	106.6	145.8
Selling and administrative expense	75.8	77.9	142.9	155.9
Research, development and engineering expense	1.0	1.1	0.9	2.4
Impairment of assets			3.1
(Gain) loss on sale of assets, net	0.0	0.1	0.0	0.2
Operating expense	76.8	79.1	146.9	158.5
Operating profit (loss)	(21.6)	(3.8)	(40.3)	(12.7)
Other income (expense)
Interest income	0.4	0.8	0.9	1.0
Interest expense	(29.7)	(23.6)	(58.8)	(34.9)
Foreign exchange gain (loss), net	2.3	(1.3)	2.3	(3.0)
Equity in earnings of investees	(21.1)	18.9	(47.4)	34.7
Miscellaneous, net	1.1	(26.8)	0.9	6.4
Income (loss) from continuing operations before taxes	(68.6)	(35.8)	(142.4)	(8.5)
Income tax (benefit) expense	(38.0)	(14.2)	(53.0)	(17.2)
Income (loss) from continuing operations, net of tax		(21.6)		8.7
Income from discontinued operations, net of tax		0.5		138.4
Net income (loss)	(30.6)	(21.1)	(89.4)	147.1
Net income attributable to noncontrolling interest	0.0	0.0	0.0	0.0
Net income (loss) attributable to Diebold Nixdorf, Incorporated	(30.6)	(21.1)	(89.4)	147.1
Comprehensive income (loss)	53.5	(2.4)	39.6	195.7
Less: comprehensive income (loss) attributable to noncontrolling interests	0.0	0.0	0.0	0.0
Comprehensive income (loss) attributable to Diebold Nixdorf, Incorporated	53.5	(2.4)	39.6	195.7
Reportable Legal Entities [Member] | Guarantor Subsidiaries [Member]
Total net sales	1.4	27.1	6.2	52.8
Cost of sales	2.7	24.5	8.6	51.4
Gross profit	(1.3)	2.6	(2.4)	1.4
Selling and administrative expense	2.1	3.1	5.0	5.7
Research, development and engineering expense	9.8	11.6	19.6	23.7
Impairment of assets			0.0
(Gain) loss on sale of assets, net	0.1	(0.2)	0.1	(0.1)
Operating expense	12.0	14.5	24.7	29.3
Operating profit (loss)	(13.3)	(11.9)	(27.1)	(27.9)
Other income (expense)
Interest income	0.0	0.2	0.1	0.4
Interest expense	0.0	0.0	0.0	(0.1)
Foreign exchange gain (loss), net	0.0	0.0	0.1	0.0
Equity in earnings of investees	0.0	0.0	0.0	0.0
Miscellaneous, net	2.1	1.7	4.0	3.2
Income (loss) from continuing operations before taxes	(11.2)	(10.0)	(22.9)	(24.4)
Income tax (benefit) expense	(16.3)	(2.0)	(20.3)	(4.9)
Income (loss) from continuing operations, net of tax		(8.0)		(19.5)
Income from discontinued operations, net of tax		0.0		0.0
Net income (loss)	5.1	(8.0)	(2.6)	(19.5)
Net income attributable to noncontrolling interest	0.0	0.0	0.0	0.0
Net income (loss) attributable to Diebold Nixdorf, Incorporated	5.1	(8.0)	(2.6)	(19.5)
Comprehensive income (loss)	5.1	(7.9)	(2.6)	(19.5)
Less: comprehensive income (loss) attributable to noncontrolling interests	0.0	0.0	0.0	0.0
Comprehensive income (loss) attributable to Diebold Nixdorf, Incorporated	5.1	(7.9)	(2.6)	(19.5)
Reportable Legal Entities [Member] | Non-Guarantor Subsidiaries [Member]
Total net sales	879.4	289.9	1,730.5	537.8
Cost of sales	695.5	212.6	1,354.4	390.6
Gross profit	183.9	77.3	376.1	147.2
Selling and administrative expense	158.9	46.3	335.9	91.3
Research, development and engineering expense	28.0	4.9	59.7	10.0
Impairment of assets			0.0
(Gain) loss on sale of assets, net	(7.8)	0.0	(8.2)	0.2
Operating expense	179.1	51.2	387.4	101.5
Operating profit (loss)	4.8	26.1	(11.3)	45.7
Other income (expense)
Interest income	4.7	5.3	10.5	9.8
Interest expense	(2.5)	(0.7)	(4.2)	(0.8)
Foreign exchange gain (loss), net	(6.9)	0.1	(10.1)	(0.6)
Equity in earnings of investees	0.0	0.0	0.0	0.0
Miscellaneous, net	(1.3)	(1.7)	(0.8)	(1.8)
Income (loss) from continuing operations before taxes	(1.2)	29.1	(15.9)	52.3
Income tax (benefit) expense	18.0	1.3	14.4	6.4
Income (loss) from continuing operations, net of tax		27.8		45.9
Income from discontinued operations, net of tax		0.0		9.9
Net income (loss)	(19.2)	27.8	(30.3)	55.8
Net income attributable to noncontrolling interest	7.0	0.8	13.6	1.1
Net income (loss) attributable to Diebold Nixdorf, Incorporated	(26.2)	27.0	(43.9)	54.7
Comprehensive income (loss)	76.5	48.9	122.7	109.6
Less: comprehensive income (loss) attributable to noncontrolling interests	8.7	0.2	15.3	0.6
Comprehensive income (loss) attributable to Diebold Nixdorf, Incorporated	67.8	48.7	107.4	109.0
Consolidation, Eliminations [Member]
Total net sales	(0.7)	(26.6)	(5.0)	(51.8)
Cost of sales	(0.7)	(26.5)	(5.0)	(51.3)
Gross profit	0.0	(0.1)	0.0	(0.5)
Selling and administrative expense	0.0	0.0	0.0	0.0
Research, development and engineering expense	0.0	0.0	0.0	0.0
Impairment of assets			0.0
(Gain) loss on sale of assets, net	0.0	0.0	0.0	0.0
Operating expense	0.0	0.0	0.0	0.0
Operating profit (loss)	0.0	(0.1)	0.0	(0.5)
Other income (expense)
Interest income	0.0	0.0	0.0	0.0
Interest expense	0.0	0.0	0.0	0.0
Foreign exchange gain (loss), net	0.0	0.0	0.0	0.0
Equity in earnings of investees	21.1	(18.9)	47.4	(34.7)
Miscellaneous, net	0.0	0.0	(0.9)	0.0
Income (loss) from continuing operations before taxes	21.1	(19.0)	46.5	(35.2)
Income tax (benefit) expense	0.0	0.0	0.0	0.0
Income (loss) from continuing operations, net of tax		(19.0)		(35.2)
Income from discontinued operations, net of tax		0.0		0.0
Net income (loss)	21.1	(19.0)	46.5	(35.2)
Net income attributable to noncontrolling interest	0.0	0.0	0.0	0.0
Net income (loss) attributable to Diebold Nixdorf, Incorporated	21.1	(19.0)	46.5	(35.2)
Comprehensive income (loss)	(72.9)	(40.8)	(104.8)	(89.5)
Less: comprehensive income (loss) attributable to noncontrolling interests	0.0	0.0	0.0	0.0
Comprehensive income (loss) attributable to Diebold Nixdorf, Incorporated	$ (72.9)	$ (40.8)	$ (104.8)	$ (89.5)