v3.20.4

Identified Intangible Assets - Summary of Identified Intangible Assets (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |  |
Cost | $ 9,249 | $ 9,384 | $ 9,183
Finite-lived intangible assets, accumulated amortization | (7,007) | (5,764) | $ (4,716)
Marketing-related |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Cost | 81 | 81 |
Finite-lived intangible assets, accumulated amortization | (81) | (67) |
Customer-related |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Cost | 957 | 968 |
Finite-lived intangible assets, accumulated amortization | (381) | (340) |
Technology-based |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Cost | 8,064 | 8,063 |
Finite-lived intangible assets, accumulated amortization | (6,545) | (5,357) |
In-process R&D (IPR&D) |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Indefinite-lived intangible assets, gross carrying amount | $ 147 | $ 272 |

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