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Organization and Basis of Presentation - Additional Information (Detail) $ in Millions | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2020 USD ($) GeographicMarket Country | Jan. 01, 2020 USD ($) | Dec. 31, 2019 USD ($)
Basis Of Presentation And Organization [Line Items] |  |  |
Number of geographical area covered | GeographicMarket | 80 |  |
Number of countries distribution occur through vendors | Country | 40 |  |
Accumulated deficit | $ (1,164) |  | $ (775)
ASC Topic 326 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |
Basis Of Presentation And Organization [Line Items] |  |  |
Accumulated deficit |  | $ 6 |

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