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- Definition

Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Other Assets

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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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- 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.

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Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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- Definition

Amount of deferred tax asset attributable to deductible temporary differences and carryforwards acquired at the acquisition date.

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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 of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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- Definition

The amount of property, plant, and equipment recognized as of the acquisition date.

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

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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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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Acquisitions, Goodwill, and Acquired Intangible Assets - Allocation of Aggregate Purchase Price of Acquisitions (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 976	$ 13,213	$ 1,855	$ 13,891	$ 1,936	$ 13,893
Goodwill	14,553		14,553		14,553		$ 13,350
Two Thousand Eighteen Acquisitions [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired			1,609
Business Combination, Consideration Transferred, Liabilities Incurred			29
Aggregate purchase price			1,638
Goodwill	1,222		1,222		1,222
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	671		671		671
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	11		11		11
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets	174		174		174
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Other Assets	282		282		282
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt	(176)		(176)		(176)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities	159		159		159
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Liabilities, Other	387		387		387
Allocated purchase price	1,638		$ 1,638		1,638
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			6 years
Marketing-Related Intangible Assets [Member] \| Two Thousand Eighteen Acquisitions [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	186		$ 186		186
Contract-Based Intangible Assets [Member] \| Two Thousand Eighteen Acquisitions [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	13		13		13
Technology-Based Intangible Assets [Member] \| Two Thousand Eighteen Acquisitions [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	279		279		279
Customer-Related Intangible Assets [Member] \| Two Thousand Eighteen Acquisitions [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 193		$ 193		$ 193
Minimum [Member] \| Two Thousand Eighteen Acquisitions [Member]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life			2 years
Maximum [Member] \| Two Thousand Eighteen Acquisitions [Member]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life			7 years