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Goodwill and Other Intangibles (Narrative) (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Feb. 15, 2019
Finite-lived intangible assets: |  |  |  |
Goodwill, impairment loss | $ 0 | $ 0 | $ 0 |
Remaining amortization period | 15 years |  |  |
Loxo Oncology, Inc. |  |  |  |
Finite-lived intangible assets: |  |  |  |
Acquired IPR&D |  |  |  | $ 4,670,000,000.0
Selpercatinib (LOXO-292) | Loxo Oncology, Inc. |  |  |  |
Finite-lived intangible assets: |  |  |  |
Acquired IPR&D |  |  |  | $ 4,600,000,000
Minimum |  |  |  |
Finite-lived intangible assets: |  |  |  |
Finite-lived intangible asset, useful life | 3 years |  |  |
Maximum |  |  |  |
Finite-lived intangible assets: |  |  |  |
Finite-lived intangible asset, useful life | 20 years |  |  |

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- Definition Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Acquired In-Process Research And Development + References No definition available. + Details
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