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Acquisitions - Schedule of assets acquired and liabilities assumed (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Goodwill	$ 16,071	$ 16,414

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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