XML 22 R29.htm IDEA: XBRL DOCUMENT v2.4.1.9

Goodwill and Acquired Intangible Assets - Gross Carrying Amount and Accumulated Amortization for Teradata Acquired Intangible Assets (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Acquired Finite-Lived Intangible Assets
Gross Carrying Amount	$ 269us-gaap_FiniteLivedIntangibleAssetsGross	$ 269us-gaap_FiniteLivedIntangibleAssetsGross
Accumulated Amortization and Currency Translation Adjustments	(147)tdc_FiniteLivedIntangibleAssetsAccumulatedAmortizationAndCurrencyTranslationAdjustment	(133)tdc_FiniteLivedIntangibleAssetsAccumulatedAmortizationAndCurrencyTranslationAdjustment
Intellectual property/developed technology
Acquired Finite-Lived Intangible Assets
Gross Carrying Amount	186us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_DevelopedTechnologyRightsMember	186us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_DevelopedTechnologyRightsMember
Accumulated Amortization and Currency Translation Adjustments	(105)tdc_FiniteLivedIntangibleAssetsAccumulatedAmortizationAndCurrencyTranslationAdjustment / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_DevelopedTechnologyRightsMember	(95)tdc_FiniteLivedIntangibleAssetsAccumulatedAmortizationAndCurrencyTranslationAdjustment / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_DevelopedTechnologyRightsMember
Customer relationships
Acquired Finite-Lived Intangible Assets
Gross Carrying Amount	77us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember	77us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember
Accumulated Amortization and Currency Translation Adjustments	(39)tdc_FiniteLivedIntangibleAssetsAccumulatedAmortizationAndCurrencyTranslationAdjustment / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember	(35)tdc_FiniteLivedIntangibleAssetsAccumulatedAmortizationAndCurrencyTranslationAdjustment / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember
Trademarks/trade names
Acquired Finite-Lived Intangible Assets
Original Amortization Life (in Years)	5 years	5 years
Gross Carrying Amount	1us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember	1us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember
Accumulated Amortization and Currency Translation Adjustments	(1)tdc_FiniteLivedIntangibleAssetsAccumulatedAmortizationAndCurrencyTranslationAdjustment / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember	(1)tdc_FiniteLivedIntangibleAssetsAccumulatedAmortizationAndCurrencyTranslationAdjustment / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember
In-process research and development
Acquired Finite-Lived Intangible Assets
Original Amortization Life (in Years)	5 years	5 years
Gross Carrying Amount	5us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_InProcessResearchAndDevelopmentMember	5us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_InProcessResearchAndDevelopmentMember
Accumulated Amortization and Currency Translation Adjustments	$ (2)tdc_FiniteLivedIntangibleAssetsAccumulatedAmortizationAndCurrencyTranslationAdjustment / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_InProcessResearchAndDevelopmentMember	$ (2)tdc_FiniteLivedIntangibleAssetsAccumulatedAmortizationAndCurrencyTranslationAdjustment / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_InProcessResearchAndDevelopmentMember
Minimum | Intellectual property/developed technology
Acquired Finite-Lived Intangible Assets
Original Amortization Life (in Years)	1 year	1 year
Minimum | Customer relationships
Acquired Finite-Lived Intangible Assets
Original Amortization Life (in Years)	3 years	3 years
Maximum | Intellectual property/developed technology
Acquired Finite-Lived Intangible Assets
Original Amortization Life (in Years)	7 years	7 years
Maximum | Customer relationships
Acquired Finite-Lived Intangible Assets
Original Amortization Life (in Years)	10 years	10 years

X

- Definition

Finite Lived Intangible Assets Accumulated Amortization And Currency Translation Adjustment

+ References

No definition available.

+ Details

Name:	tdc_FiniteLivedIntangibleAssetsAccumulatedAmortizationAndCurrencyTranslationAdjustment
Namespace Prefix:	tdc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

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

X

- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_CustomerRelationshipsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_DevelopedTechnologyRightsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_InProcessResearchAndDevelopmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TrademarksMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: