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

Amount classified as property, plant and equipment attributable to disposal group held for sale or disposed of, expected to be disposed of after one year or the normal operating cycle, if longer.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Name:	us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant