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Goodwill and Acquired Intangible Assets - Goodwill by Operating Segment (Detail) (USD $) In Millions, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015
Goodwill [Roll Forward] |
December 31, 2014 | $ 948 us-gaap_Goodwill
Adjustments | (3)us-gaap_GoodwillPurchaseAccountingAdjustments
Currency Translation Adjustments | (21)us-gaap_GoodwillTranslationAdjustments
March 31, 2015 | 924 us-gaap_Goodwill
Data and Analytics |
Goodwill [Roll Forward] |
December 31, 2014 | 351 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = tdc_DataandAnalyticsMember
Adjustments | (3)us-gaap_GoodwillPurchaseAccountingAdjustments / us-gaap_StatementBusinessSegmentsAxis = tdc_DataandAnalyticsMember
Currency Translation Adjustments | (3)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = tdc_DataandAnalyticsMember
March 31, 2015 | 345 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = tdc_DataandAnalyticsMember
Marketing Applications |
Goodwill [Roll Forward] |
December 31, 2014 | 597 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = tdc_MarketingApplicationsMember
Adjustments | 0 us-gaap_GoodwillPurchaseAccountingAdjustments / us-gaap_StatementBusinessSegmentsAxis = tdc_MarketingApplicationsMember
Currency Translation Adjustments | (18)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = tdc_MarketingApplicationsMember
March 31, 2015 | $ 579 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = tdc_MarketingApplicationsMember

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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Period Type: | instant

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- Definition Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e961-128460 + Details
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- Definition Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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