Segment and Geographic Information - Narrative (Details) $ in Millions	1 Months Ended	12 Months Ended
Apr. 30, 2018 USD ($)	Dec. 31, 2018 USD ($) Segment
Segment Reporting [Abstract]
Number of reportable segments \| Segment		4
Business Acquisition [Line Items]
Consideration paid for acquisition, net of cash acquired		$ 0
Maximum percentage of consolidated revenue represented by foreign countries (more than)		8.00%
Maximum percentage of consolidated revenue represented by single customer (more than)		10.00%
Kensho Technologies
Business Acquisition [Line Items]
Consideration paid for acquisition, net of cash acquired	$ 550

Maximum percentage of consolidated revenue represented by foreign countries.

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Maximum percentage of consolidated revenue represented by single customer.

+ References

No definition available.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

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