Goodwill and Other Intangible Assets - Summary of Changes in Carrying Amount of Goodwill (Detail) $ in Millions	3 Months Ended
Mar. 31, 2019 USD ($)
Goodwill [Line Items]
Balance beginning	$ 6,987
Acquisitions, divestitures and other adjustments	22
Balance ending	7,009
Connect
Goodwill [Line Items]
Balance beginning	1,337
Acquisitions, divestitures and other adjustments	(2)
Effect of foreign currency translation	3
Balance ending	1,338
Media
Goodwill [Line Items]
Balance beginning	5,650
Acquisitions, divestitures and other adjustments	24
Effect of foreign currency translation	(3)
Balance ending	$ 5,671

Acquisitions, divestitures and other adjustments.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

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-Publisher FASB
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-Section 45
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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: 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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