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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Amount of assets acquired at the acquisition date.

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Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired 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 liabilities assumed at the acquisition date.

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Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at 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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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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Acquisitions - Schedule of Acquisitions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Goodwill	$ 3,900	$ 3,858	$ 3,921	$ 3,778
2019 Acquisitions
Business Acquisition [Line Items]
Accounts/finance receivables	3
Goodwill	14
Other assets	3
Total Assets acquired	41
Liabilities assumed	(3)
Total Purchase Price	$ 38
Customer relationships \| 2019 Acquisitions
Business Acquisition [Line Items]
Intangible assets, weighted average life (years)	10 years
Intangible assets	$ 19
Trademarks \| 2019 Acquisitions
Business Acquisition [Line Items]
Intangible assets, weighted average life (years)	5 years
Intangible assets	$ 2