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Goodwill and other intangible assets - (Tables) | 12 Months Ended
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Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of goodwill | The changes in the carrying amounts of goodwill were as follows (in millions):
| Years ended December 31,
| 2019 |  | 2018
Beginning balance | $ | 14,699 |  |  | $ | 14,761 |
Addition from acquisitions | 26 |  |  | 6 |
Currency translation adjustments | (22 | ) |  | (68 | )
Ending balance | $ | 14,703 |  |  | $ | 14,699 |
Schedule of identifiable intangible assets | Other intangible assets consisted of the following (in millions):
| December 31,
| 2019 |  | 2018
| Gross carrying amounts |  | Accumulated amortization |  | Other intangible assets, net |  | Gross carrying amounts |  | Accumulated amortization |  | Other intangible assets, net
Finite-lived intangible assets: |  |  |  |  |  |  |  |  |  |  |
Developed-product-technology rights | $ | 25,575 |  |  | $ | (8,322 | ) |  | $ | 17,253 |  |  | $ | 12,573 |  |  | $ | (7,479 | ) |  | $ | 5,094 |
Licensing rights | 3,761 |  |  | (2,398 | ) |  | 1,363 |  |  | 3,772 |  |  | (2,032 | ) |  | 1,740 |
Marketing-related rights | 1,382 |  |  | (965 | ) |  | 417 |  |  | 1,297 |  |  | (1,019 | ) |  | 278 |
R&D technology rights | 1,273 |  |  | (947 | ) |  | 326 |  |  | 1,148 |  |  | (872 | ) |  | 276 |
Total finite-lived intangible assets | 31,991 |  |  | (12,632 | ) |  | 19,359 |  |  | 18,790 |  |  | (11,402 | ) |  | 7,388 |
Indefinite-lived intangible assets: |  |  |  |  |  |  |  |  |  |  |
IPR&D | 54 |  |  | — |  |  | 54 |  |  | 55 |  |  | — |  |  | 55 |
Total other intangible assets | $ | 32,045 |  |  | $ | (12,632 | ) |  | $ | 19,413 |  |  | $ | 18,845 |  |  | $ | (11,402 | ) |  | $ | 7,443 |

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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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