v3.20.4

Identified Intangible Assets | 12 Months Ended
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Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |
Identified Intangible Assets | Identified Intangible Assets The changes in identified intangible assets were as follows:
| Total
Balance as of January 1, 2019 |
Cost | 9,183 |
Accumulated amortization/impairment | (4,716) |
Book value | 4,467 |
Changes in book value: |
Acquisitions/additions | 683 |
Transfer to assets held for sale | (1) |
Amortization | (1,529) |
Total changes | (847) |
Balance as of December 31, 2019 |
Cost | 9,384 |
Accumulated amortization/impairment | (5,764) |
Book value | 3,620 |
Changes in book value: |
Acquisitions/additions | 63 |
Transfer to assets held for sale | — |
Amortization | (1,398) |
Impairment | (43) |
Translation differences | — |
Total changes | (1,378) |
Balance as of December 31, 2020 |
Cost | 9,249 |
Accumulated amortization/impairment | (7,007) |
Book value | 2,242 |
Identified intangible assets as of December 31, 2020 and 2019 respectively were composed of the following:
| December 31, 2020 |  | December 31, 2019
| Gross carrying amount |  | Accumulated amortization |  | Gross carrying amount |  | Accumulated amortization
IPR&D(1) | 147 |  |  | — |  |  | 272 |  |  | — |
Marketing-related | 81 |  |  | (81) |  |  | 81 |  |  | (67) |
Customer-related | 957 |  |  | (381) |  |  | 968 |  |  | (340) |
Technology-based | 8,064 |  |  | (6,545) |  |  | 8,063 |  |  | (5,357) |
Identified intangible assets | 9,249 |  |  | (7,007) |  |  | 9,384 |  |  | (5,764) |
(1) IPR&D is not subject to amortization until completion or abandonment of the associated research and development effort. The estimated amortization expense for these identified intangible assets for each of the five succeeding years is:
2021 | 675 |
2022 | 572 |
2023 | 340 |
2024 | 157 |
2025 | 106 |
Thereafter | 392 |
All intangible assets, excluding IPR&D and goodwill, are subject to amortization and have no assumed residual value. The expected weighted average remaining life of identified intangibles is 4 years as of December 31, 2020.

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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