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Goodwill and Intangible Assets (Acquired Intangible Assets) (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2019 | Dec. 31, 2018
Acquired intangible assets disclosures |  |
Total gross carrying amount | $ 4,642 | $ 4,198
Total accumulated amortization | (2,319) | (2,182)
Total finite-lived intangible assets - net | 2,323 | 2,016
Non-amortizable intangible assets (primarily tradenames) | 641 | 641
Total intangible assets - net | $ 2,964 | 2,657
Minimum |  |
Acquired intangible assets disclosures |  |
Indefinite lived tradenames years in existence | 55 years |
Customer related intangible assets |  |
Acquired intangible assets disclosures |  |
Total gross carrying amount | $ 2,565 | 2,291
Total accumulated amortization | (1,075) | (998)
Patents |  |
Acquired intangible assets disclosures |  |
Total gross carrying amount | 540 | 542
Total accumulated amortization | (494) | (487)
Other technology-based intangible assets |  |
Acquired intangible assets disclosures |  |
Total gross carrying amount | 738 | 576
Total accumulated amortization | (368) | (333)
Definite-lived tradenames |  |
Acquired intangible assets disclosures |  |
Total gross carrying amount | 674 | 664
Total accumulated amortization | (293) | (276)
Other amortizable intangible assets |  |
Acquired intangible assets disclosures |  |
Total gross carrying amount | 125 | 125
Total accumulated amortization | $ (89) | $ (88)

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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/disclosureRef -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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