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Goodwill and other intangible assets (Identifiable Intangible Assets) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross carrying amounts | $ 35,608 |  | $ 35,608 |  | $ 35,596
Accumulated amortization | (21,916) |  | (21,916) |  | (20,525)
Other intangible assets, net | 13,692 |  | 13,692 |  | 15,071
Gross carrying amount | 36,549 |  | 36,549 |  | 36,605
Accumulated amortization | (21,916) |  | (21,916) |  | (20,525)
Intangible assets, net | 14,633 |  | 14,633 |  | 16,080
Amortization charges associated with finite-lived intangible assets | 693 | $ 629 | 1,400 | $ 1,300 |
In-process research and development |  |  |  |  |
Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |
Indefinite-lived intangible assets: | 941 |  | 941 |  | 1,009
Developed-product-technology rights |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross carrying amounts | 29,040 |  | 29,040 |  | 29,028
Accumulated amortization | (16,310) |  | (16,310) |  | (15,045)
Other intangible assets, net | 12,730 |  | 12,730 |  | 13,983
Licensing rights |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross carrying amounts | 3,864 |  | 3,864 |  | 3,864
Accumulated amortization | (3,197) |  | (3,197) |  | (3,123)
Other intangible assets, net | 667 |  | 667 |  | 741
Marketing-related rights |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross carrying amounts | 1,312 |  | 1,312 |  | 1,326
Accumulated amortization | (1,195) |  | (1,195) |  | (1,167)
Other intangible assets, net | 117 |  | 117 |  | 159
Research and development technology rights |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross carrying amounts | 1,392 |  | 1,392 |  | 1,378
Accumulated amortization | (1,214) |  | (1,214) |  | (1,190)
Other intangible assets, net | $ 178 |  | $ 178 |  | $ 188

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