Discontinued Operations and Business Dispositions - By Disposal (Details) - USD ($) shares in Thousands, $ in Millions |
1 Months Ended | 12 Months Ended | |
|---|---|---|---|
Apr. 30, 2015 |
Feb. 28, 2015 |
Dec. 31, 2017 |
|
| Discontinued Operations and Assets Held for Disposition | |||
| Gain on sale of Mylan shares | $ 45 | ||
| Developed markets branded generics pharmaceuticals business | Mylan N.V. (Investee) | Mylan | |||
| Discontinued Operations and Assets Held for Disposition | |||
| Number of ordinary shares received for sale of business | 110,000 | ||
| Percentage of ordinary shares received for sale of business | 22.00% | ||
| Equity securities | Mylan N.V. (Investee) | |||
| Discontinued Operations and Assets Held for Disposition | |||
| Number of shares in investment sold | 40,250 | 69,750 | |
| Proceeds from the sale of Mylan N.V. shares | $ 2,290 | $ 2,704 | |
| Gain on sale of Mylan shares | $ 207 | $ 45 | |