Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net sales
Net sales	$ 4,578.6	$ 4,609.3	$ 3,316.3
Cost of sales
Cost of sales	3,687.7	3,609.5	2,604.6
Gross profit	890.9	999.8	711.7
Selling and administrative expense	885.6	933.7	761.2
Research, development and engineering expense	157.4	155.5	110.2
Impairment of assets	217.5	3.1	9.8
(Gain) loss on sale of assets, net	6.7	(1.0)	(0.3)
Total operating expense	1,253.8	1,093.3	881.5
Operating loss	(362.9)	(93.5)	(169.8)
Other income (expense)
Interest income	8.7	20.3	21.5
Interest expense	(154.9)	(117.3)	(101.4)
Foreign exchange loss, net	(2.5)	(3.9)	(2.1)
Miscellaneous, net	(4.0)	2.5	3.1
Loss from continuing operations before taxes	(515.6)	(191.9)	(248.7)
Income tax expense (benefit)	37.2	28.3	(69.0)
Equity in (loss) earnings of unconsolidated subsidiaries, net	(13.2)	6.3	0.4
Loss from continuing operations, net of tax	(566.0)	(213.9)	(179.3)
Income from discontinued operations, net of tax	0.0	0.0	143.7
Net loss	(566.0)	(213.9)	(35.6)
Net income attributable to noncontrolling interests, net of tax	2.7	27.6	6.0
Net loss attributable to Diebold Nixdorf, Incorporated	$ (568.7)	$ (241.5)	$ (41.6)
Basic weighted-average shares outstanding	76.0	75.5	69.1
Diluted weighted-average shares outstanding	76.0	75.5	69.1
Basic and diluted loss per share
Loss before discontinued operations, net of tax	$ (7.48)	$ (3.20)	$ (2.68)
Income from discontinued operations, net of tax	0.00	0.00	2.08
Net loss attributable to Diebold Nixdorf, Incorporated	(7.48)	(3.20)	(0.60)
Diluted earnings (loss) per share
Income (loss) before discontinued operations, net of tax	(7.48)	(3.20)	(2.68)
Income from discontinued operations, net of tax	0.00	0.00	2.08
Net income (loss) attributable to Diebold Nixdorf, Incorporated	$ (7.48)	$ (3.20)	$ (0.60)
Amounts attributable to Diebold Nixdorf, Incorporated
Loss before discontinued operations, net of tax	$ (568.7)	$ (241.5)	$ (185.3)
Income from discontinued operations, net of tax	0.0	0.0	143.7
Net loss attributable to Diebold Nixdorf, Incorporated	$ (568.7)	$ (241.5)	$ (41.6)
Cash dividends declared and paid per share	$ 0.10	$ 0.40	$ 0.96
Service [Member]
Net sales
Net sales	$ 2,789.5	$ 2,785.3	$ 1,908.0
Cost of sales
Cost of sales	2,164.3	2,110.1	1,381.1
Product [Member]
Net sales
Net sales	1,789.1	1,824.0	1,408.3
Cost of sales
Cost of sales	$ 1,523.4	$ 1,499.4	$ 1,223.5