Condensed Consolidated Balance Sheets - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Current assets
Cash, cash equivalents and restricted cash	$ 215.9	$ 324.5
Short-term investments	13.7	37.2
Receivables, Net, Current	671.4	646.9
Inventories	624.8	498.2
Prepaid expenses	52.2	58.8
Current assets held for sale	57.6	64.7
Other current assets	285.5	227.0
Total current assets	1,921.1	1,857.3
Securities and other investments	10.4	10.3
Property, Plant and Equipment, Net	145.4	177.5
Goodwill	760.6	800.4
Deferred income taxes	103.8	97.5
Intangible assets, net	371.2	448.6
Other Assets, Noncurrent	318.1	306.5
Total assets	3,586.9	3,657.4
Current liabilities
Notes payable	49.1	10.7
Accounts payable	572.7	499.9
Deferred Revenue, Current	246.4	346.8
Payroll and other benefits liabilities	221.0	226.6
Disposal Group, Including Discontinued Operation, Liabilities	17.8	15.4
Other current liabilities	452.5	550.1
Total current liabilities	1,559.5	1,649.5
Long-term debt	2,447.1	2,335.7
Pensions, post-retirement and other benefits	211.2	228.7
Deferred income taxes	85.4	103.4
Other liabilities	147.2	152.6
Redeemable noncontrolling interests	0.0	19.2
Diebold Nixdorf, Incorporated shareholders' equity
Preferred shares, no par value, 1,000,000 authorized shares, none issued	0.0	0.0
Common shares, $1.25 par value, 125,000,000 authorized shares, 94,596,280 and 93,534,866 issued shares, 78,349,911 and 77,678,984 outstanding shares, respectively	118.2	116.9
Additional capital	818.4	787.9
Retained earnings (accumulated deficit)	(782.8)	(742.3)
Treasury shares, at cost (16,246,369 and 15,855,882 shares, respectively)	(582.1)	(576.7)
Accumulated other comprehensive loss	(444.0)	(412.9)
Total Diebold Nixdorf, Incorporated shareholders' equity	(872.3)	(827.1)
Noncontrolling interests	8.8	(4.6)
Total equity	(863.5)	(831.7)
Total liabilities, redeemable noncontrolling interests and equity	$ 3,586.9	3,657.4
Document Period End Date	Sep. 30, 2021
Customer relationships [Member]
Current assets
Intangible assets, net	$ 327.5	$ 407.9