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Goodwill And Other Intangible Assets (Rollforward Of Goodwill) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Goodwill [Roll Forward] |  |  |
Balance at beginning of year | $ 35,420 | $ 22,713 |
Attributable to acquisitions | 7,235 | 10,402 | $ 217
Attributable to divestitures | (12) | (181) |
Adjustments due to finalization of purchase price allocations | (11) | (3) |
Foreign currency translation and other | (1,448) | 2,489 |
Balance at end of year | 41,184 | 35,420 | 22,713
Operating segments | Life Sciences |  |  |
Goodwill [Roll Forward] |  |  |
Balance at beginning of year | 25,812 | 13,472 |
Attributable to acquisitions | 7,077 | 10,291 |
Attributable to divestitures | 0 | (181) |
Adjustments due to finalization of purchase price allocations | (11) | (3) |
Foreign currency translation and other | (1,240) | 2,233 |
Balance at end of year | 31,638 | 25,812 | 13,472
Operating segments | Diagnostics |  |  |
Goodwill [Roll Forward] |  |  |
Balance at beginning of year | 7,082 | 6,901 |
Attributable to acquisitions | 110 | 0 |
Attributable to divestitures | 0 | 0 |
Adjustments due to finalization of purchase price allocations | 0 | 0 |
Foreign currency translation and other | (148) | 181 |
Balance at end of year | 7,044 | 7,082 | 6,901
Operating segments | Environmental & Applied Solutions |  |  |
Goodwill [Roll Forward] |  |  |
Balance at beginning of year | 2,526 | 2,340 |
Attributable to acquisitions | 48 | 111 |
Attributable to divestitures | (12) | 0 |
Adjustments due to finalization of purchase price allocations | 0 | 0 |
Foreign currency translation and other | (60) | 75 |
Balance at end of year | $ 2,502 | $ 2,526 | $ 2,340

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