Investments Finance Lease Receivables - Minimum Lease Receivables Schedule (Details) $ in Millions	Mar. 31, 2021 USD ($)
Finance Lease Receivables - Minimum Lease Receivables Schedule [Abstract]
2020	$ 16.5
2021	8.7
2022	6.6
2023	6.0
Capital Leases, Future Minimum Payments Due in Five Years	5.5
Thereafter	3.4
Capital Leases, Future Minimum Payments Receivable	$ 46.7

Finance Lease Receivables - Minimum Lease Receivables Schedule [Abstract]

No definition available.

Name:	dbd_FinanceLeaseReceivablesMinimumLeaseReceivablesScheduleAbstract
Namespace Prefix:	dbd_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of minimum lease payments for capital leases due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121616839&loc=d3e45280-112737

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of minimum lease payments to be received by the lessor for capital leases.

+ References