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Revenues Revenues (Details Textual) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Disaggregation of Revenue [Line Items] |  |
Other Revenues | $ 3,489.8 | $ 3,131.1
Distributor One |  |
Disaggregation of Revenue [Line Items] |  |
Percentage of revenues from major distributors | 31.30% | 34.00%
Distributor Two |  |
Disaggregation of Revenue [Line Items] |  |
Percentage of revenues from major distributors | 14.20% | 15.90%
Other |  |
Disaggregation of Revenue [Line Items] |  |
Other Revenues | $ 292.4 | $ 164.4
Other | Bioverativ |  |
Disaggregation of Revenue [Line Items] |  |
Other Revenues | $ 206.8 | $ 47.0

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