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Goodwill and Other Intangible Assets (Goodwill by Segment) (Details) - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Goodwill [Line Items] |  |
Total goodwill | $ 39,856 | $ 39,752
Operating segments | Biotechnology |  |
Goodwill [Line Items] |  |
Total goodwill | 22,167 | 22,087
Operating segments | Life Sciences |  |
Goodwill [Line Items] |  |
Total goodwill | 8,319 | 8,314
Operating segments | Diagnostics |  |
Goodwill [Line Items] |  |
Total goodwill | 6,883 | 6,875
Operating segments | Environmental & Applied Solutions |  |
Goodwill [Line Items] |  |
Total goodwill | $ 2,487 | $ 2,476

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