Commitments - Extended Warranty Liability (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2021 |
Jun. 30, 2021 |
Jun. 30, 2020 |
Dec. 31, 2020 |
|
| Movement in deferred income | ||||
| Amortization of deferred revenue | $ (4,900) | $ (7,200) | ||
| Current portion | 13,272 | 13,272 | $ 12,833 | |
| Noncurrent portion | 4,113 | 4,113 | $ 4,301 | |
| Extended Warranty | ||||
| Movement in deferred income | ||||
| Beginning Balance | 425 | $ 477 | ||
| Revenue deferred for new extended warranty contracts | 50 | 93 | ||
| Amortization of deferred revenue | (104) | (115) | ||
| Other | (5) | (9) | ||
| Ending Balance | 367 | 367 | 445 | |
| Current portion | 184 | 184 | 216 | |
| Noncurrent portion | $ 183 | $ 183 | $ 228 | |