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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Name:	us-gaap_GoodwillImpairmentLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Goodwill (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Goodwill (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Goodwill disclosures
Goodwill impairment losses	$ 2,515	$ 0	$ 0	$ 2,515
Measurement Input, Discount Rate \| Level 3 \| Valuation Technique, Discounted Cash Flow
Goodwill disclosures
Goodwill impairment analysis, discount rate, cost of capital, theoretical market participant	14.00%