Inventory - Additional Information (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2020 |
Jun. 30, 2019 |
Jun. 30, 2020 |
Jun. 30, 2019 |
|
| Inventory [Line Items] | ||||
| Inventory write-downs | $ 88 | $ 116 | ||
| Cost of Revenues [Member] | ||||
| Inventory [Line Items] | ||||
| Inventory write-downs | $ 37 | $ 25 | $ 82 | $ 89 |