Equity - Stock-Based Compensation (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Shares reserved for issuance (in shares) | 144,000,000 | ||
| Retirement-eligible employees' age | 55 years | ||
| Minimum number of years of services | 10 years | ||
| Pre-tax compensation expense | $ 692 | $ 753 | $ 430 |
| Tax benefit | 126 | 131 | 80 |
| After-tax compensation expense | 566 | 622 | 350 |
| Realized excess tax benefits from the exercise of stock options | 50 | 34 | 15 |
| Cost of products sold | |||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Pre-tax compensation expense | 46 | 47 | 29 |
| Research and development | |||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Pre-tax compensation expense | 226 | 247 | 171 |
| Selling, general and administrative | |||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Pre-tax compensation expense | $ 420 | $ 459 | $ 230 |