Commitments & Contingencies - Extended Warranty Liability (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Movement in deferred income | ||
| Amortization of deferred revenue | $ (10,200) | |
| Current portion | 12,518 | $ 11,980 |
| Noncurrent portion | 3,577 | 3,758 |
| Extended Warranty | ||
| Movement in deferred income | ||
| Beginning Balance | 425 | 477 |
| Revenue deferred for new extended warranty contracts | 133 | 166 |
| Amortization of deferred revenue | (198) | (224) |
| Other | (10) | 6 |
| Ending Balance | 350 | 425 |
| Current portion | 163 | 204 |
| Noncurrent portion | $ 186 | $ 221 |