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Goodwill and other intangible assets (Tables) | 9 Months Ended
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Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of goodwill | Changes in the carrying amounts of goodwill were as follows (in millions):
| Nine months ended September 30,
| 2017 |  | 2016
Beginning balance | $ | 14,751 |  |  | $ | 14,787 |
Goodwill related to acquisitions of businesses | — |  |  | 2 |
Currency translation adjustments | 25 |  |  | 13 |
Ending balance | $ | 14,776 |  |  | $ | 14,802 |
Schedule of identifiable intangible assets | Identifiable intangible assets consisted of the following (in millions):
| September 30, 2017 |  | December 31, 2016
| Gross carrying amount |  | Accumulated amortization |  | Intangible assets, net |  | Gross carrying amount |  | Accumulated amortization |  | Intangible assets, net
Finite-lived intangible assets: |  |  |  |  |  |  |  |  |  |  |
Developed product technology rights | $ | 12,585 |  |  | $ | (6,624 | ) |  | $ | 5,961 |  |  | $ | 12,534 |  |  | $ | (5,947 | ) |  | $ | 6,587 |
Licensing rights | 3,275 |  |  | (1,525 | ) |  | 1,750 |  |  | 3,275 |  |  | (1,300 | ) |  | 1,975 |
Marketing-related rights | 1,326 |  |  | (895 | ) |  | 431 |  |  | 1,333 |  |  | (793 | ) |  | 540 |
Research and development technology rights | 1,158 |  |  | (783 | ) |  | 375 |  |  | 1,122 |  |  | (704 | ) |  | 418 |
Total finite-lived intangible assets | 18,344 |  |  | (9,827 | ) |  | 8,517 |  |  | 18,264 |  |  | (8,744 | ) |  | 9,520 |
Indefinite-lived intangible assets: |  |  |  |  |  |  |  |  |  |  |
In-process research and development | 356 |  |  | — |  |  | 356 |  |  | 759 |  |  | — |  |  | 759 |
Total identifiable intangible assets | $ | 18,700 |  |  | $ | (9,827 | ) |  | $ | 8,873 |  |  | $ | 19,023 |  |  | $ | (8,744 | ) |  | $ | 10,279 |

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- Definition Tabular disclosure of finite-lived and indefinite-lived identifiable intangible assets. + References No definition available. + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + 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 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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