Restructuring and other asset-related charges (benefit)

No definition available.

Name:	ncr_Restructuringandotherassetrelatedchargesbenefit
Namespace Prefix:	ncr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 17
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3367-108585

+ Details

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

- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

+ Details

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

- Definition

Amount of increase (decrease) in the accrual for restructuring costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_RestructuringCostAndReserveAxis=ncr_SeveranceandotheremployeerelatedchargesMember
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Data Type:	na
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- Details

Name:	us-gaap_RestructuringCostAndReserveAxis=ncr_InventoryrelatedchargesMember
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Data Type:	na
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- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_SellingGeneralAndAdministrativeExpensesMember
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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=ncr_CostofServicesMember
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Data Type:	na
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Period Type:

- Details

Name:	us-gaap_RestructuringCostAndReserveAxis=ncr_OtherexitcostsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ncr_SeveranceTypeAxis=ncr_DiscretechargeunderASC712Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ncr_SeveranceTypeAxis=ncr_SeverancechargeunderASC420Member
Namespace Prefix:
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Balance Type:
Period Type:

Restructuring Plan (Details) - USD ($) $ in Millions	12 Months Ended
Restructuring Plan (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 0	$ 2	$ 0
Restructuring Reserve, Period Increase (Decrease)	3	13
Payments for Restructuring	(5)	(11)
Severance and other employee related charges [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other asset-related charges (benefit)	1	7
Inventory related charges [Member] \| Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other asset-related charges (benefit)		2
Inventory related charges [Member] \| Cost of Services [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other asset-related charges (benefit)		5
Other exit costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other asset-related charges (benefit)	$ 2	6
Other exit costs [Member] \| Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other asset-related charges (benefit)		3
Discrete charge under ASC 712 [Member] \| Severance and other employee related charges [Member]
Restructuring Cost and Reserve [Line Items]
Payments for Restructuring		(2)
Restructuring and other asset-related charges (benefit)		2
Severance charge under ASC 420 [Member] \| Severance and other employee related charges [Member]
Restructuring Cost and Reserve [Line Items]
Payments for Restructuring		(3)
Restructuring and other asset-related charges (benefit)		$ 5