Goodwill and Other Intangible Assets, Net - Goodwill (Detail) $ in Millions	9 Months Ended
Sep. 30, 2019 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 3,002
Currency translation and other adjustments	(155)
Goodwill, ending balance	2,847
Americas
Goodwill [Roll Forward]
Goodwill, beginning balance	2,386
Currency translation and other adjustments	(121)
Goodwill, ending balance	2,265
EMEA
Goodwill [Roll Forward]
Goodwill, beginning balance	393
Currency translation and other adjustments	(23)
Goodwill, ending balance	370
APAC
Goodwill [Roll Forward]
Goodwill, beginning balance	223
Currency translation and other adjustments	(11)
Goodwill, ending balance	$ 212

Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e961-128460

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration