Acquisitions, Divestitures, Assets and Liabilities Held for Sale, Licensing Arrangements, Research and Development and Collaborative Arrangements, Equity-Method Investments and Privately Held Investment - Privately Held Investment (Details) - AM Pharma BV [Member] - USD ($) $ in Millions |
1 Months Ended | |
|---|---|---|
Apr. 30, 2015 |
Dec. 31, 2017 |
|
| Schedule of Equity Method Investments [Line Items] | ||
| Impairment of investment | $ 43.0 | |
| Long-term Investments [Member] | ||
| Schedule of Equity Method Investments [Line Items] | ||
| Cost method investment, upfront and milestone payments | $ 87.5 |