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Goodwill and other intangible assets (Tables) | 9 Months Ended
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Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of goodwill | The change in the carrying amount of goodwill was as follows (in millions):
| Nine months ended September 30, 2018
Beginning balance | $ | 14,761 |
Addition from K-A acquisition | 6 |
Currency translation adjustment | (83 | )
Ending balance | $ | 14,684 |
Schedule of identifiable intangible assets | Other intangible assets consisted of the following (in millions):
| September 30, 2018 |  | December 31, 2017
| Gross carrying amounts |  | Accumulated amortization |  | Intangible assets, net |  | Gross carrying amounts |  | Accumulated amortization |  | Intangible assets, net
Finite-lived intangible assets: |  |  |  |  |  |  |  |  |  |  |
Developed-product-technology rights | $ | 12,586 |  |  | $ | (7,312 | ) |  | $ | 5,274 |  |  | $ | 12,589 |  |  | $ | (6,796 | ) |  | $ | 5,793 |
Licensing rights | 3,771 |  |  | (1,921 | ) |  | 1,850 |  |  | 3,275 |  |  | (1,601 | ) |  | 1,674 |
Marketing-related rights | 1,285 |  |  | (982 | ) |  | 303 |  |  | 1,319 |  |  | (920 | ) |  | 399 |
R&D technology rights | 1,159 |  |  | (860 | ) |  | 299 |  |  | 1,161 |  |  | (804 | ) |  | 357 |
Total finite-lived intangible assets | 18,801 |  |  | (11,075 | ) |  | 7,726 |  |  | 18,344 |  |  | (10,121 | ) |  | 8,223 |
Indefinite-lived intangible assets: |  |  |  |  |  |  |  |  |  |  |
In-process research and development | 56 |  |  | — |  |  | 56 |  |  | 386 |  |  | — |  |  | 386 |
Total other intangible assets | $ | 18,857 |  |  | $ | (11,075 | ) |  | $ | 7,782 |  |  | $ | 18,730 |  |  | $ | (10,121 | ) |  | $ | 8,609 |

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267 + Details
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