Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Current assets
Cash, cash equivalents and restricted cash	$ 234.8	$ 324.5
Short-term investments	21.3	37.2
Receivables, Net, Current	629.1	646.9
Inventories	538.7	498.2
Prepaid expenses	58.6	58.8
Current assets held for sale	63.8	64.7
Other current assets	246.6	227.0
Total current assets	1,792.9	1,857.3
Securities and other investments	10.4	10.3
Property, Plant and Equipment, Net	156.7	177.5
Goodwill	771.4	800.4
Deferred income taxes	99.0	97.5
Intangible assets, net	410.7	448.6
Other Assets, Noncurrent	314.8	306.5
Total assets	3,515.6	3,657.4
Current liabilities
Notes payable	11.0	10.7
Accounts payable	546.9	499.9
Deferred revenue	365.8	346.8
Payroll and other benefits liabilities	201.4	226.6
Disposal Group, Including Discontinued Operation, Liabilities	15.4	15.4
Other current liabilities	488.4	550.1
Total current liabilities	1,628.9	1,649.5
Long-term debt	2,270.7	2,335.7
Pensions, post-retirement and other benefits	205.9	228.7
Deferred income taxes	103.4	103.4
Other liabilities	146.7	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, 94,438,989 and 93,534,866 issued shares, 78,209,484 and 77,678,984 outstanding shares, respectively	118.0	116.9
Additional capital	809.5	787.9
Retained earnings (accumulated deficit)	(750.4)	(742.3)
Treasury shares, at cost (16,229,505 and 15,855,882 shares, respectively)	(581.9)	(576.7)
Accumulated other comprehensive loss	(443.8)	(412.9)
Total Diebold Nixdorf, Incorporated shareholders' equity	(848.6)	(827.1)
Noncontrolling interests	8.6	(4.6)
Total equity	(840.0)	(831.7)
Total liabilities, redeemable noncontrolling interests and equity	3,515.6	3,657.4
Customer relationships [Member]
Current assets
Intangible assets, net	$ 370.4	$ 407.9