Investments - Equity Investments Without Readily Determinable Fair Values (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Equity Securities without Readily Determinable Fair Value [Roll Forward]
Carrying value, beginning of period	$ 86	$ 85
Downward adjustments for observable price changes and impairment	0	(7)
Carrying value, end of period	$ 86	$ 78

Equity Securities without Readily Determinable Fair Value [Roll Forward]

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- Definition

Amount of investment in equity security without readily determinable fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126980263&loc=SL75117539-209714

+ Details

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- Definition

Amount of loss from downward price adjustment on investment in equity security without readily determinable fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126980263&loc=SL75117539-209714

+ Details

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