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Goodwill and Other Intangible Assets (Goodwill by Segment) (Details) - USD ($) $ in Millions | Apr. 03, 2020 | Dec. 31, 2019
--- | --- | ---
Goodwill [Line Items] |  |
Total goodwill | $ 33,725.5 | $ 22,712.5
Operating segments | Life Sciences |  |
Goodwill [Line Items] |  |
Total goodwill | 24,703.0 | 13,471.8
Operating segments | Diagnostics |  |
Goodwill [Line Items] |  |
Total goodwill | 6,740.1 | 6,901.2
Operating segments | Environmental & Applied Solutions |  |
Goodwill [Line Items] |  |
Total goodwill | $ 2,282.4 | $ 2,339.5

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