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Goodwill and Intangible Assets (Acquired Intangible Assets) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016
Acquired intangible assets disclosures |  |
Total gross carrying amount | $ 4,361 | $ 3,696
Total accumulated amortization | (2,073) | (2,005)
Total finite-lived intangible assets - net | 2,288 | 1,691
Non-amortizable intangible assets (primarily tradenames) | 648 | 629
Total intangible assets - net | $ 2,936 | 2,320
Indefinite lived tradenames years in existence | 55 years |
Customer related intangible assets |  |
Acquired intangible assets disclosures |  |
Total gross carrying amount | $ 2,332 | 1,939
Total accumulated amortization | (874) | (797)
Patents |  |
Acquired intangible assets disclosures |  |
Total gross carrying amount | 561 | 602
Total accumulated amortization | (489) | (497)
Other technology-based intangible assets |  |
Acquired intangible assets disclosures |  |
Total gross carrying amount | 583 | 524
Total accumulated amortization | (292) | (302)
Definite-lived tradenames |  |
Acquired intangible assets disclosures |  |
Total gross carrying amount | 678 | 420
Total accumulated amortization | (256) | (236)
Other amortizable intangible assets |  |
Acquired intangible assets disclosures |  |
Total gross carrying amount | 207 | 211
Total accumulated amortization | $ (162) | $ (173)

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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=66006027&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=66006027&loc=d3e16323-109275 + Details
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- Definition Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the rights acquired through registration of a trade name to gain or protect exclusive use thereof for a projected indefinite period of benefit. + 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 (b) -URI http://asc.fasb.org/extlink&oid=66006027&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=66006027&loc=d3e16323-109275 + Details
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