Supplemental Financial Information - Investments (Details) - USD ($) shares in Thousands, $ in Millions |
1 Months Ended | 3 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2017 |
Apr. 30, 2015 |
Mar. 31, 2017 |
Dec. 31, 2016 |
|
| Investments | ||||
| Long-term Investments | $ 1,756 | $ 1,756 | $ 2,947 | |
| Proceeds from the sale of Mylan N.V. shares | $ 1,685 | |||
| Mylan N. V. (Investee) | ||||
| Investments | ||||
| Number of shares in investment sold | 44,000 | 40,250 | 44,000 | |
| Proceeds from the sale of Mylan N.V. shares | $ 1,685 | $ 1,700 | ||
| Equity securities | ||||
| Investments | ||||
| Long-term Investments | 1,702 | 1,702 | 2,906 | |
| Equity securities | St Jude Medical | ||||
| Investments | ||||
| Securities in mutual funds held in a rabbi trust | 338 | $ 338 | ||
| Equity securities | Mylan N. V. (Investee) | ||||
| Investments | ||||
| Number of shares in investment sold | 44,000 | |||
| Proceeds from the sale of Mylan N.V. shares | $ 1,700 | |||
| Other | ||||
| Investments | ||||
| Long-term Investments | $ 54 | $ 54 | $ 41 | |