Product Warranty and Related Liabilities (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Product warranty and related liabilities | ||
| Warranty balance at beginning of period | $ 13,631 | $ 10,571 |
| Warranties issued and assumed in period – recall campaigns | 148 | 143 |
| Warranties issued and assumed in period – product warranty | 927 | 789 |
| Payments | (1,415) | (1,203) |
| Adjustments to pre-existing warranties | 331 | 565 |
| Effect of foreign currency and other | (16) | 8 |
| Warranty balance at end of period | 13,605 | 10,873 |
| Less: Supplier recoveries balance at end of period | 392 | 408 |
| Warranty balance, net of supplier recoveries at end of period | 13,213 | 10,465 |
| Product warranty expense, net of recoveries | ||
| Warranties issued and assumed in period | 1,075 | 932 |
| Supplier recoveries accrued in period | (132) | (151) |
| Adjustments and other | 314 | 573 |
| Warranty expense, net of supplier recoveries | $ 1,257 | $ 1,354 |