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Business Acquisitions and Divestitures - Acquisition of Medical Specialties Distributors (Details) - Medical Specialties Distributors LLC (“MSD”) - USD ($) $ in Millions | May 31, 2019 | Jun. 01, 2018 | Mar. 31, 2019
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Business Acquisition [Line Items] |  |  |
Net purchase consideration |  | $ 784 |
Intangible assets | $ 326 |  | $ 326
Weighted average life (years) | 18 years |  |

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