Goodwill and Intangible Assets - Changes in Goodwill and Intangible Assets (Details) $ in Millions	6 Months Ended
Jun. 30, 2020 USD ($)
Goodwill
Balance at January 1, 2020	$ 20,848
Currency	(381)
Acquisition	530
Asset impairments	0
Balance at June 30, 2020	20,997
Intangible Assets, at cost
Balance at January 1, 2020	19,670
Currency	(526)
Acquisition	553
Asset impairments	(90)
Balance at June 30, 2020	$ 19,607

Finite-lived and Indefinite-lived Intangible Assets

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- Definition

Intangible Assets Acquired Other Than Goodwill

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- Definition

Reflects net changes to intangible assets for foreign currency translation adjustments.

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- Definition

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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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

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Amount before accumulated amortization of intangible assets, excluding goodwill.

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