Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Prior Period Adjustment [Abstract]
Impairment of assets	$ 111.8	$ 1.3	$ 7.5
Net loss attributable to Diebold Nixdorf, Incorporated	581.4	78.8	269.1
Other current assets	168.5	203.1
Goodwill	702.3	743.6	800.4
Deferred income taxes	0.0	95.7
Current assets held for sale	7.9	73.4
Current liabilities held for sale	6.8	20.3
Trade receivables, net	612.2	595.2	646.9
Deferred revenue	453.2	322.4	346.8
Revenue, Remaining Performance Obligation, Amount	1,400.0
Advertising expense	8.5	7.1	7.2
Research, development and engineering expense	120.7	126.3	133.4
Restricted Cash and Cash Equivalents	$ (9.1)
Expected rate of return period	20 years
Amortization of unrecognized net gain (loss)	5.00%
Cash equivalents, maturity period	3 months
Accounts Receivable, Related Parties	$ 18.9
Accounts Payable, Related Parties	25.7
Equity in earnings (loss) of unconsolidated subsidiaries, net	2.2	0.3	0.7
Balance at January 1	35.3	37.5	42.2
Charged to costs and expenses	14.0	9.8	10.1
Charged to other accounts (1)	(0.1)	0.0	(1.2)
Deductions (2)	(14.7)	(12.0)	(13.6)
Balance at December 31	$ 34.5	$ 35.3	$ 37.5
Aisino-Wincor Retail And Banking Systems (Shanghai) Co.,Ltd [Member]
Prior Period Adjustment [Abstract]
Equity Method Investment, Ownership Percentage	49.00%
Inspur (Suzhou) Financial Technology Service Co Ltd [Member]
Prior Period Adjustment [Abstract]
Equity Method Investment, Ownership Percentage	48.10%
Minimum
Prior Period Adjustment [Abstract]
Past Due Period Of Financing Receivable Accruing Interest	90 days