Accrued and Other Liabilities - Product Warranty and Related Liabilities (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
|
| Product Warranty and Related Liabilities [Roll Forward] | ||||
| Warranty balance at beginning of period | $ 7,798 | $ 7,590 | $ 8,332 | |
| Warranties issued and assumed in period – recall campaigns | 1,628 | 745 | 665 | |
| Warranties issued and assumed in period – product warranty | 1,773 | 2,001 | 2,143 | |
| Payments | (2,986) | (3,012) | (2,903) | |
| Adjustments to pre-existing warranties | 41 | 455 | (464) | |
| Effect of foreign currency and other | (12) | 19 | (183) | |
| Warranty balance at end of period | $ 8,242 | $ 8,242 | $ 7,798 | $ 7,590 |
| Takata Passenger-side Airbags | ||||
| Loss Contingencies [Line Items] | ||||
| Increase in product warranty accrual | $ 1,100 | |||