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Goodwill and other intangible assets (Identifiable Intangible Assets) (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amounts | $ 32,098 | $ 32,099
Accumulated amortization | (19,191) | (17,987)
Other intangible assets, net | 12,907 | 14,112
Gross carrying amount | 33,118 | 33,169
Accumulated amortization | (19,191) | (17,987)
Intangible assets, net | 13,927 | 15,182
In-process Research and Development |  |
Indefinite-lived Intangible Assets [Line Items] |  |
Indefinite-lived intangible assets | 1,020 | 1,070
Developed-Product-Technology Rights [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amounts | 25,537 | 25,561
Accumulated amortization | (13,863) | (12,769)
Other intangible assets, net | 11,674 | 12,792
Licensing rights |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amounts | 3,864 | 3,807
Accumulated amortization | (3,050) | (2,973)
Other intangible assets, net | 814 | 834
Marketing-Related Rights [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amounts | 1,326 | 1,354
Accumulated amortization | (1,125) | (1,112)
Other intangible assets, net | 201 | 242
Research and Development Technology Rights [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amounts | 1,371 | 1,377
Accumulated amortization | (1,153) | (1,133)
Other intangible assets, net | $ 218 | $ 244

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