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v2.4.1.9

Components of Other Intangible Assets (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013
Gross Carrying Amount | $ 671 us-gaap_IntangibleAssetsGrossExcludingGoodwill | $ 710 us-gaap_IntangibleAssetsGrossExcludingGoodwill
Accumulated Impairment and Amortization | (502)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | (483)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Net Carrying Amount | 169 us-gaap_IntangibleAssetsNetExcludingGoodwill | 227 us-gaap_IntangibleAssetsNetExcludingGoodwill
Amortizable Intangible Assets [Member] | Core Technology [Member] |  |
Weighted Average Useful Life (years) | 7 years |
Gross Carrying Amount | 90 us-gaap_FiniteLivedIntangibleAssetsGross / dan_IntangibleAssetsByAmortizationAxis = dan_AmortizableIntangibleAssetsMember / dan_IntangibleAssetsByMajorClassAxis = dan_CoreTechnologyMember | 94 us-gaap_FiniteLivedIntangibleAssetsGross / dan_IntangibleAssetsByAmortizationAxis = dan_AmortizableIntangibleAssetsMember / dan_IntangibleAssetsByMajorClassAxis = dan_CoreTechnologyMember
Accumulated Impairment and Amortization | (85)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / dan_IntangibleAssetsByAmortizationAxis = dan_AmortizableIntangibleAssetsMember / dan_IntangibleAssetsByMajorClassAxis = dan_CoreTechnologyMember | (83)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / dan_IntangibleAssetsByAmortizationAxis = dan_AmortizableIntangibleAssetsMember / dan_IntangibleAssetsByMajorClassAxis = dan_CoreTechnologyMember
Net Carrying Amount | 5 us-gaap_FiniteLivedIntangibleAssetsNet / dan_IntangibleAssetsByAmortizationAxis = dan_AmortizableIntangibleAssetsMember / dan_IntangibleAssetsByMajorClassAxis = dan_CoreTechnologyMember | 11 us-gaap_FiniteLivedIntangibleAssetsNet / dan_IntangibleAssetsByAmortizationAxis = dan_AmortizableIntangibleAssetsMember / dan_IntangibleAssetsByMajorClassAxis = dan_CoreTechnologyMember
Amortizable Intangible Assets [Member] | Trademarks and Trade Names [Member] |  |
Weighted Average Useful Life (years) | 16 years |
Gross Carrying Amount | 3 us-gaap_FiniteLivedIntangibleAssetsGross / dan_IntangibleAssetsByAmortizationAxis = dan_AmortizableIntangibleAssetsMember / dan_IntangibleAssetsByMajorClassAxis = us-gaap_TrademarksAndTradeNamesMember | 4 us-gaap_FiniteLivedIntangibleAssetsGross / dan_IntangibleAssetsByAmortizationAxis = dan_AmortizableIntangibleAssetsMember / dan_IntangibleAssetsByMajorClassAxis = us-gaap_TrademarksAndTradeNamesMember
Accumulated Impairment and Amortization | (1)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / dan_IntangibleAssetsByAmortizationAxis = dan_AmortizableIntangibleAssetsMember / dan_IntangibleAssetsByMajorClassAxis = us-gaap_TrademarksAndTradeNamesMember | (1)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / dan_IntangibleAssetsByAmortizationAxis = dan_AmortizableIntangibleAssetsMember / dan_IntangibleAssetsByMajorClassAxis = us-gaap_TrademarksAndTradeNamesMember
Net Carrying Amount | 2 us-gaap_FiniteLivedIntangibleAssetsNet / dan_IntangibleAssetsByAmortizationAxis = dan_AmortizableIntangibleAssetsMember / dan_IntangibleAssetsByMajorClassAxis = us-gaap_TrademarksAndTradeNamesMember | 3 us-gaap_FiniteLivedIntangibleAssetsNet / dan_IntangibleAssetsByAmortizationAxis = dan_AmortizableIntangibleAssetsMember / dan_IntangibleAssetsByMajorClassAxis = us-gaap_TrademarksAndTradeNamesMember
Amortizable Intangible Assets [Member] | Customer Relationships [Member] |  |
Weighted Average Useful Life (years) | 8 years |
Gross Carrying Amount | 493 us-gaap_FiniteLivedIntangibleAssetsGross / dan_IntangibleAssetsByAmortizationAxis = dan_AmortizableIntangibleAssetsMember / dan_IntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember | 527 us-gaap_FiniteLivedIntangibleAssetsGross / dan_IntangibleAssetsByAmortizationAxis = dan_AmortizableIntangibleAssetsMember / dan_IntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember
Accumulated Impairment and Amortization | (416)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / dan_IntangibleAssetsByAmortizationAxis = dan_AmortizableIntangibleAssetsMember / dan_IntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember | (399)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / dan_IntangibleAssetsByAmortizationAxis = dan_AmortizableIntangibleAssetsMember / dan_IntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember
Net Carrying Amount | 77 us-gaap_FiniteLivedIntangibleAssetsNet / dan_IntangibleAssetsByAmortizationAxis = dan_AmortizableIntangibleAssetsMember / dan_IntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember | 128 us-gaap_FiniteLivedIntangibleAssetsNet / dan_IntangibleAssetsByAmortizationAxis = dan_AmortizableIntangibleAssetsMember / dan_IntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember
Non Amortizable Intangible Assets [Member] | Trademarks and Trade Names [Member] |  |
Indefinite-Lived Intangible Assets (Excluding Goodwill) | 65 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / dan_IntangibleAssetsByAmortizationAxis = dan_NonAmortizableIntangibleAssetsMember / dan_IntangibleAssetsByMajorClassAxis = us-gaap_TrademarksAndTradeNamesMember | 65 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / dan_IntangibleAssetsByAmortizationAxis = dan_NonAmortizableIntangibleAssetsMember / dan_IntangibleAssetsByMajorClassAxis = us-gaap_TrademarksAndTradeNamesMember
Non Amortizable Intangible Assets [Member] | Used In Research and Development [Member] |  |
Indefinite-Lived Intangible Assets (Excluding Goodwill) | $ 20 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / dan_IntangibleAssetsByAmortizationAxis = dan_NonAmortizableIntangibleAssetsMember / dan_IntangibleAssetsByMajorClassAxis = dan_UsedInResearchAndDevelopmentMember | $ 20 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill / dan_IntangibleAssetsByAmortizationAxis = dan_NonAmortizableIntangibleAssetsMember / dan_IntangibleAssetsByMajorClassAxis = dan_UsedInResearchAndDevelopmentMember

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- Definition Accumulated amount of 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
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- 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
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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