2019 Acquisition [Abstract]

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2019 Divestiture [Abstract]

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Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Net Assets

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Gain (Loss) On Disposition Of Business, Net Of Tax

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This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to intangibles acquired in connection with a business combination for which the initial accounting was incomplete.

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Amount of deferred tax liability attributable to taxable temporary differences assumed at the acquisition date.

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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 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 a business, net of the cash acquired from the purchase.

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This element represents the cash inflow during the period from the sale of a component of the entity.

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Acquisitions and Divestiture (2019 Divestiture and Acquisition) (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended			12 Months Ended
	Mar. 31, 2019	Jan. 31, 2019	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2019
2019 Divestiture [Abstract]
Proceeds from divestiture of businesses			$ 0		$ 108
2019 Acquisition [Abstract]
Purchase Consideration			157		$ 193
Goodwill			$ 6,326	$ 6,366		$ 6,366
Cinnober
2019 Acquisition [Abstract]
Purchase Consideration		$ 219
Total Net Assets Acquired		18
Total Net Deferred Tax Liability		(19)
Acquired Intangible Assets		74
Goodwill		$ 146
Measurement period adjustment, net assets						$ 4
Measurement period adjustment, intangible assets				$ 5
Disposal group disposed of by sale \| BWise
2019 Divestiture [Abstract]
Proceeds from divestiture of businesses	$ 27
Gain on divestiture of business, after tax	$ 20