Summary of Significant Accounting Policies - Goodwill (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Accounting Policies [Abstract]
Goodwill	$ 1,657	$ 1,657	$ 1,795
Goodwill decrease		138
Goodwill impairment loss	$ 130	130
Goodwill, decrease due to asset sales		6
Goodwill, decrease due foreign currency translation		$ 2

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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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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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