Aggregate notional amount specified by the derivative(s).

No definition available.

Name:	dbd_NotionalAmountofDerivatives
Namespace Prefix:	dbd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959

+ Details

Name:	us-gaap_DerivativeGainLossOnDerivativeNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeInstrumentsGainLossLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of derivative instruments of a particular group held by the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959

+ Details

Name:	us-gaap_DerivativeNumberOfInstrumentsHeld
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dbd_CurrencyForwardAgreementsEURtoGBPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dbd_CurrencyForwardAgreementsUSDToBRLMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dbd_CurrencyForwardAgreementsUSDToEURMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dbd_CurrencyForwardAgreementsGBPToEURMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_InterestExpenseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_SalesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeForwardMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_ForeignCurrencyGainLossMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Derivative Instruments and Hedging Activities (Details) € in Millions, £ in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 GBP (£)	Jun. 30, 2021 EUR (€)	Dec. 31, 2020 USD ($)
Derivative Instruments Gain (Loss) [Line Items]
Gain (loss) recognized on derivative instruments	$ (2.0)	$ 3.2	$ (8.2)	$ (11.6)
Interest rate swaps
Derivative Instruments Gain (Loss) [Line Items]
Notional Amount of Derivatives		500.0		500.0			$ 250.0
Cash Flow Hedging [Member]
Derivative Instruments Gain (Loss) [Line Items]
Notional Amount of Derivatives \| €						€ 2.6
Currency Forward Agreements USD to BRL
Derivative Instruments Gain (Loss) [Line Items]
Notional Amount of Derivatives					£ 25.4	€ 4.9
Derivative, Number of Instruments Held	4		4		4	4
Currency Forward Agreements USD to EUR
Derivative Instruments Gain (Loss) [Line Items]
Notional Amount of Derivatives	$ 1.0		$ 1.0			€ 1.2
Derivative, Number of Instruments Held	2		2		2	2
Currency Forward Agreements GBP to EUR
Derivative Instruments Gain (Loss) [Line Items]
Notional Amount of Derivatives \| £					£ 2.2
Derivative, Number of Instruments Held	4		4		4	4
Interest Expense [Member] \| Interest rate swaps
Derivative Instruments Gain (Loss) [Line Items]
Gain (loss) recognized on derivative instruments	$ (2.2)	(3.4)	$ (4.1)	(4.9)
Sales [Member] \| Foreign exchange forward contracts
Derivative Instruments Gain (Loss) [Line Items]
Gain (loss) recognized on derivative instruments	0.0	0.2	0.0	0.5
Asset Management Income [Member] \| Foreign exchange forward contracts
Derivative Instruments Gain (Loss) [Line Items]
Gain (loss) recognized on derivative instruments	$ 0.1	$ 6.4	$ (4.1)	$ (7.2)