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Segment, Other Supplemental Information and Concentrations - Schedule of Property and Equipment by Geographic Area (Detail) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Schedule Of Identifiable Assets By Segment [Line Items] |  |
Property and equipment, net | $ 350 | $ 295
United States |  |
Schedule Of Identifiable Assets By Segment [Line Items] |  |
Property and equipment, net | 261 | 226
Americas (excluding United States) |  |
Schedule Of Identifiable Assets By Segment [Line Items] |  |
Property and equipment, net | 19 | 18
EMEA |  |
Schedule Of Identifiable Assets By Segment [Line Items] |  |
Property and equipment, net | $ 36 | $ 26

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