Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net sales
Net sales	$ 851.7	$ 943.5	$ 1,681.5	$ 1,887.4
Cost of sales
Total cost of sales	690.9	691.6	1,335.4	1,362.3
Gross profit	160.8	251.9	346.1	525.1
Selling and administrative expense	213.8	204.8	394.8	408.2
Research, development and engineering expense	33.1	35.6	65.4	69.7
Asset Impairment Charges	5.4	0.0	60.6	0.0
Impairment of assets	0.0	1.4	(0.2)	1.9
Total operating expense	252.3	239.0	521.0	476.0
Operating profit (loss)	(91.5)	12.9	(174.9)	49.1
Other income (expense)
Interest income	1.0	2.3	2.3	4.0
Interest expense	(49.6)	(49.7)	(97.7)	(98.4)
Foreign exchange gain (loss), net	2.3	(9.2)	(2.4)	(3.5)
Miscellaneous, net	4.6	2.7	7.2	2.0
Loss before taxes	(133.2)	(41.0)	(265.5)	(46.8)
Income tax expense (benefit)	64.2	(11.2)	115.1	(10.0)
Equity in loss of unconsolidated subsidiaries	(1.7)	(0.5)	(2.4)	(1.6)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total	(199.1)	(30.3)	(383.0)	(38.4)
Net income (loss) attributable to noncontrolling interests	0.1	0.0	(0.7)	0.0
Net loss attributable to Diebold Nixdorf, Incorporated	$ (199.2)	$ (30.3)	$ (382.3)	$ (38.4)
Weighted-average number of common shares used in basic and diluted loss per share (1)	79.0	78.3	78.9	78.2
Earnings Per Share [Abstract]
Basic and diluted loss per share	$ (2.52)	$ (0.39)	$ (4.85)	$ (0.49)
Service [Member]
Net sales
Net sales	$ 525.4	$ 586.7	$ 1,051.6	$ 1,160.3
Cost of sales
Total cost of sales	375.1	409.9	749.3	799.5
Product [Member]
Net sales
Net sales	326.3	356.8	629.9	727.1
Cost of sales
Total cost of sales	315.8	281.7	586.1	562.8
Retained Earnings [Member]
Other income (expense)
Net loss attributable to Diebold Nixdorf, Incorporated	$ (199.2)	$ (30.3)	$ (382.3)	$ (38.4)