Summary of Significant Accounting Policies - Schedule of Accrued Warranty Activity (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
|
| Standard Product Warranty Disclosure [Abstract] | |||
| Accrued warranty—beginning of period | $ 1,089 | $ 748 | $ 402 |
| Warranty costs incurred | (312) | (250) | (209) |
| Net changes in liability for pre-existing warranties, including expirations and foreign exchange impact | 66 | 36 | (26) |
| Additional warranty accrued from adoption of ASC 606 | 37 | ||
| Provision for warranty | 625 | 555 | 544 |
| Accrued warranty—end of period | $ 1,468 | $ 1,089 | $ 748 |