Supplemental Guarantor Information Supplemental Guarantor Information (Condensed Consolidating Statements of Operations and Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Total net sales	$ 1,122.7	$ 983.3	$ 3,359.4	$ 2,072.9
Cost of sales	881.7	785.7	2,638.1	1,581.4
Gross profit	241.0	197.6	721.3	491.5
Selling and administrative expense	208.8	253.5	692.6	506.4
Research, development and engineering expense	34.2	31.3	114.4	67.4
Impairment of assets	0.0	0.0	3.1	0.0
(Gain) loss on sale of assets, net	5.6	(0.5)	(2.5)	(0.2)
Operating expense	248.6	284.3	807.6	573.6
Operating profit (loss)	(7.6)	(86.7)	(86.3)	(82.1)
Other income (expense)
Interest income	4.3	5.3	15.8	16.5
Interest expense	(27.7)	(32.4)	(90.7)	(68.2)
Foreign exchange gain (loss), net	3.2	2.0	(4.5)	(1.6)
Equity in earnings of investees	0.0	0.0	0.0	0.0
Miscellaneous, net	(1.5)	(4.2)	1.7	3.6
Income (loss) from continuing operations before taxes	(29.3)	(116.0)	(164.0)	(131.8)
Income tax (benefit) expense	(0.5)	(18.8)	(59.4)	(34.5)
Income (loss) from continuing operations, net of tax	(28.8)	(97.2)	(104.6)	(97.3)
Income (loss) from discontinued operations, net of tax	0.0	(4.6)	0.0	143.7
Net income (loss)	(28.8)	(101.8)	(104.6)	46.4
Net income attributable to noncontrolling interest	6.6	0.5	20.2	1.6
Net income (loss) attributable to Diebold Nixdorf, Incorporated	(35.4)	(102.3)	(124.8)	44.8
Comprehensive income (loss)	(14.1)	(106.5)	40.8	89.8
Less: comprehensive income (loss) attributable to noncontrolling interests	8.4	0.5	23.7	1.1
Comprehensive income (loss) attributable to Diebold Nixdorf, Incorporated	(22.5)	(107.0)	17.1	88.7
Reportable Legal Entities [Member] | Parent Company [Member]
Total net sales	289.1	301.3	831.0	852.2
Cost of sales	233.0	229.2	667.3	629.8
Gross profit	56.1	72.1	163.7	222.4
Selling and administrative expense	65.2	30.0	211.5	186.1
Research, development and engineering expense	1.0	1.0	1.8	3.3
Impairment of assets			3.1
(Gain) loss on sale of assets, net	(0.1)	0.0	0.0	0.2
Operating expense	66.1	31.0	216.4	189.6
Operating profit (loss)	(10.0)	41.1	(52.7)	32.8
Other income (expense)
Interest income	0.6	1.0	1.7	2.0
Interest expense	(25.7)	(32.2)	(84.4)	(64.3)
Foreign exchange gain (loss), net	0.5	1.8	3.1	(1.2)
Equity in earnings of investees	11.0	(96.4)	(42.3)	(66.1)
Miscellaneous, net	1.7	(5.5)	9.0	(1.9)
Income (loss) from continuing operations before taxes	(21.9)	(90.2)	(165.6)	(98.7)
Income tax (benefit) expense	13.5	7.5	(40.8)	(9.7)
Income (loss) from continuing operations, net of tax		(97.7)		(89.0)
Income (loss) from discontinued operations, net of tax		(4.6)		133.8
Net income (loss)	(35.4)	(102.3)	(124.8)	44.8
Net income attributable to noncontrolling interest	0.0	0.0	0.0	0.0
Net income (loss) attributable to Diebold Nixdorf, Incorporated	(35.4)	(102.3)	(124.8)	44.8
Comprehensive income (loss)	(22.5)	(107.0)	17.1	88.7
Less: comprehensive income (loss) attributable to noncontrolling interests	0.0	0.0	0.0	0.0
Comprehensive income (loss) attributable to Diebold Nixdorf, Incorporated	(22.5)	(107.0)	17.1	88.7
Reportable Legal Entities [Member] | Guarantor Subsidiaries [Member]
Total net sales	0.6	22.5	6.9	75.2
Cost of sales	1.8	24.4	10.5	80.2
Gross profit	(1.2)	(1.9)	(3.6)	(5.0)
Selling and administrative expense	2.7	2.9	7.7	8.4
Research, development and engineering expense	10.8	10.8	30.5	34.6
Impairment of assets			0.0
(Gain) loss on sale of assets, net	0.1	(0.1)	0.1	(0.1)
Operating expense	13.6	13.6	38.3	42.9
Operating profit (loss)	(14.8)	(15.5)	(41.9)	(47.9)
Other income (expense)
Interest income	0.1	0.1	0.2	0.5
Interest expense	0.0	0.0	(0.1)	(0.1)
Foreign exchange gain (loss), net	0.0	(0.1)	0.1	(0.1)
Equity in earnings of investees	0.0	0.0	0.0	0.0
Miscellaneous, net	1.8	2.2	5.9	5.4
Income (loss) from continuing operations before taxes	(12.9)	(13.3)	(35.8)	(42.2)
Income tax (benefit) expense	2.6	1.4	(17.7)	(3.5)
Income (loss) from continuing operations, net of tax		(14.7)		(38.7)
Income (loss) from discontinued operations, net of tax		0.0		0.0
Net income (loss)	(15.5)	(14.7)	(18.1)	(38.7)
Net income attributable to noncontrolling interest	0.0	0.0	0.0	0.0
Net income (loss) attributable to Diebold Nixdorf, Incorporated	(15.5)	(14.7)	(18.1)	(38.7)
Comprehensive income (loss)	(15.5)	(14.7)	(18.1)	(39.0)
Less: comprehensive income (loss) attributable to noncontrolling interests	0.0	0.0	0.0	0.0
Comprehensive income (loss) attributable to Diebold Nixdorf, Incorporated	(15.5)	(14.7)	(18.1)	(39.0)
Reportable Legal Entities [Member] | Non-Guarantor Subsidiaries [Member]
Total net sales	833.0	681.6	2,526.6	1,219.4
Cost of sales	646.9	554.1	1,965.4	944.7
Gross profit	186.1	127.5	561.2	274.7
Selling and administrative expense	140.9	220.6	473.4	311.9
Research, development and engineering expense	22.4	19.5	82.1	29.5
Impairment of assets			0.0
(Gain) loss on sale of assets, net	5.6	(0.4)	(2.6)	(0.3)
Operating expense	168.9	239.7	552.9	341.1
Operating profit (loss)	17.2	(112.2)	8.3	(66.4)
Other income (expense)
Interest income	3.6	4.2	13.9	14.0
Interest expense	(2.0)	(1.5)	(6.2)	(8.0)
Foreign exchange gain (loss), net	2.7	0.3	(7.7)	(0.3)
Equity in earnings of investees	0.0	0.0	0.0	0.0
Miscellaneous, net	(4.7)	0.4	(12.0)	4.3
Income (loss) from continuing operations before taxes	16.8	(108.8)	(3.7)	(56.4)
Income tax (benefit) expense	(16.6)	(27.7)	(0.9)	(21.3)
Income (loss) from continuing operations, net of tax		(81.1)		(35.1)
Income (loss) from discontinued operations, net of tax		0.0		9.9
Net income (loss)	33.4	(81.1)	(2.8)	(25.2)
Net income attributable to noncontrolling interest	6.6	0.5	20.2	1.6
Net income (loss) attributable to Diebold Nixdorf, Incorporated	26.8	(81.6)	(23.0)	(26.8)
Comprehensive income (loss)	56.3	(81.9)	179.0	27.6
Less: comprehensive income (loss) attributable to noncontrolling interests	8.4	0.5	23.7	1.1
Comprehensive income (loss) attributable to Diebold Nixdorf, Incorporated	47.9	(82.4)	155.3	26.5
Consolidation, Eliminations [Member]
Total net sales	0.0	(22.1)	(5.1)	(73.9)
Cost of sales	0.0	(22.0)	(5.1)	(73.3)
Gross profit	0.0	(0.1)	0.0	(0.6)
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	(0.6)
Other income (expense)
Interest income	0.0	0.0	0.0	0.0
Interest expense	0.0	1.3	0.0	4.2
Foreign exchange gain (loss), net	0.0	0.0	0.0	0.0
Equity in earnings of investees	(11.0)	96.4	42.3	66.1
Miscellaneous, net	(0.3)	(1.3)	(1.2)	(4.2)
Income (loss) from continuing operations before taxes	(11.3)	96.3	41.1	65.5
Income tax (benefit) expense	0.0	0.0	0.0	0.0
Income (loss) from continuing operations, net of tax		96.3		65.5
Income (loss) from discontinued operations, net of tax		0.0		0.0
Net income (loss)	(11.3)	96.3	41.1	65.5
Net income attributable to noncontrolling interest	0.0	0.0	0.0	0.0
Net income (loss) attributable to Diebold Nixdorf, Incorporated	(11.3)	96.3	41.1	65.5
Comprehensive income (loss)	(32.4)	97.1	(137.2)	12.5
Less: comprehensive income (loss) attributable to noncontrolling interests	0.0	0.0	0.0	0.0
Comprehensive income (loss) attributable to Diebold Nixdorf, Incorporated	$ (32.4)	$ 97.1	$ (137.2)	$ 12.5