Supplemental Financial Information - Other income and expense (Details) - USD ($) shares in Thousands, $ in Millions |
1 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
Feb. 28, 2017 |
Apr. 30, 2015 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Disclosures | |||||
| Proceeds from the sale of Mylan N.V. shares | $ 2,704 | ||||
| Gain on sale of Mylan shares | $ 45 | ||||
| Equity securities | Mylan N.V. (Investee) | |||||
| Disclosures | |||||
| Number of shares in investment sold | 40,250 | 69,750 | |||
| Gain on sale of Mylan shares | $ 207 | $ 45 | |||
| Pre-tax gain on sale of disposal group | 1,163 | ||||
| Other (income) expense, net | |||||
| Disclosures | |||||
| Income related to non-service cost component of net periodic benefit cost | $ 225 | $ 160 | 160 | ||
| Other (income) expense, net | Mylan N.V. (Investee) | |||||
| Disclosures | |||||
| Gain on sale of Mylan shares | $ 45 | ||||
| AMO | Dispositions held for sale | Other (income) expense, net | |||||
| Disclosures | |||||
| Pre-tax gain on sale of disposal group | $ 1,163 | ||||