Accrued and Other Liabilities - Product Warranty and Related Liabilities (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Product Warranty and Related Liabilities [Roll Forward] | |||
| Warranty balance at beginning of period | $ 7,590 | $ 8,332 | $ 9,069 |
| Warranties issued and assumed in period – recall campaigns | 745 | 665 | 678 |
| Warranties issued and assumed in period – product warranty | 2,001 | 2,143 | 2,123 |
| Payments | (3,012) | (2,903) | (3,129) |
| Adjustments to pre-existing warranties | 455 | (464) | (495) |
| Effect of foreign currency and other | 19 | (183) | 86 |
| Warranty balance at end of period | $ 7,798 | $ 7,590 | $ 8,332 |