Business Combinations - Summary of Unaudited Pro Forma Consolidated Revenue and Net Loss (Details) - IDV Solutions LLC - USD ($) $ in Millions	2 Months Ended	3 Months Ended
Mar. 31, 2017	Mar. 31, 2017	Mar. 31, 2016
Business Acquisition [Line Items]
Revenue	$ 1,348	$ 1,885	$ 1,790
Net loss	$ (635)	$ (1,389)	$ (1,378)

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.

No definition available.

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- Definition

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)-(3)
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463

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- Definition

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

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