The period over which contingent consideration may be earned by the acquiree.

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Amount recognized as of the acquisition date for the other identifiable assets acquired and other aggregate liabilities assumed, net.

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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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.

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No definition available.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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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.

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For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

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For contingent consideration arrangements and indemnification assets recognized in connection with a business combination, this element represents an estimate of the low-end of the potential range (undiscounted) of the consideration which may be paid.

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Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled beyond one year or the normal operating cycle, if longer.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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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.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Acquisitions And Divestitures Acquisition of Antaya Technologies Corporation (Details) - USD ($) $ in Millions		1 Months Ended
	Oct. 31, 2017	Oct. 31, 2014	Jun. 30, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill			$ 619	$ 656
Antaya Technologies Corp.
Business Acquisition [Line Items]
Business Acquisition, Percentage of Equity Interests Acquired		100.00%
Purchase price, cash consideration		$ 140
Contingent Consideration Liability at closing		11
Total purchase price		151
Definite-lived intangible assets		75
Other assets purchased and liabilities assumed, net		(17)
Identifiable net assets acquired		58
Goodwill		93
Total purchase price allocation		$ 151
Contingent Consideration Arrangements, Range of Outcomes, Value, High			40
Contingent Consideration Arrangements, Range of Outcomes, Value, Low			$ 0
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		14 years
Scenario, Forecast \| Antaya Technologies Corp.
Business Acquisition [Line Items]
Contingent Consideration Period	3 years