Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Net sales
Net sales	$ 922.2	$ 851.7	$ 1,780.3	$ 1,681.5
Cost of sales
Total cost of sales	697.0	690.9	1,345.8	1,335.4
Gross profit	225.2	160.8	434.5	346.1
Selling and administrative expense	201.0	213.8	384.8	394.8
Research, development and engineering expense	25.4	33.1	51.8	65.4
Asset Impairment Charges	1.8	5.4	2.7	60.6
Impairment of assets	0.9	0.0	1.2	0.2
Total operating expense	229.1	252.3	440.5	521.0
Operating loss	(3.9)	(91.5)	(6.0)	(174.9)
Other income (expense)
Interest income	3.3	1.0	5.0	2.3
Interest expense	(69.7)	(49.6)	(151.6)	(97.7)
Foreign exchange gain (loss), net	1.5	2.3	(9.1)	(2.4)
Reorganization Items	(636.2)	0.0	(636.2)	0.0
Miscellaneous, net	3.5	4.6	6.1	7.2
Loss before taxes	(701.5)	(133.2)	(791.8)	(265.5)
Income tax (benefit) expense	(24.8)	64.2	(3.7)	115.1
Equity in loss of unconsolidated subsidiaries	(0.6)	(1.7)	(0.7)	(2.4)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total	(677.3)	(199.1)	(788.8)	(383.0)
Net income (loss) attributable to noncontrolling interests	(0.2)	0.1	(0.6)	(0.7)
Net loss attributable to Diebold Nixdorf, Incorporated	$ (677.1)	$ (199.2)	$ (788.2)	$ (382.3)
Weighted-average number of common shares used in basic and diluted loss per share (1)	80.0	79.0	79.7	78.9
Earnings Per Share [Abstract]
Basic and diluted loss per share	$ (8.46)	$ (2.52)	$ (9.89)	$ (4.85)
Service [Member]
Net sales
Net sales	$ 538.0	$ 525.4	$ 1,054.4	$ 1,051.6
Cost of sales
Total cost of sales	388.1	375.1	751.1	749.3
Product [Member]
Net sales
Net sales	384.2	326.3	725.9	629.9
Cost of sales
Total cost of sales	308.9	315.8	594.7	586.1
Retained Earnings [Member]
Other income (expense)
Net loss attributable to Diebold Nixdorf, Incorporated	$ (677.1)	$ (199.2)	$ (788.2)	$ (382.3)