Stock-Based Compensation - Compensation (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Amounts recognized in the financial statements | |||
| Stock-based compensation programs expense | $ 324 | $ 298 | $ 276 |
| Income tax benefits | (327) | (272) | (87) |
| Stock-based compensation expenses (benefits), net of tax | (3) | 26 | 189 |
| ASU 2016-09 Improvements to Employee Share-Based Payment Accounting | |||
| Amounts recognized in the financial statements | |||
| Income tax benefits | (228) | (184) | |
| Cost of sales | |||
| Amounts recognized in the financial statements | |||
| Stock-based compensation programs expense | 49 | 47 | 46 |
| Selling, general and administrative expenses | |||
| Amounts recognized in the financial statements | |||
| Stock-based compensation programs expense | 229 | 206 | 185 |
| Research, development and related expenses | |||
| Amounts recognized in the financial statements | |||
| Stock-based compensation programs expense | $ 46 | $ 45 | $ 45 |