Financial Instruments - Investments - Unrealized Gains and Losses Related to Equity Securities - Footnotes (Details) $ in Millions	Dec. 31, 2023 USD ($)
Fair Value Disclosures [Abstract]
Cumulative impairment losses and downward price adjustments on equity securities	$ 259
Cumulative upward price adjustments on equity securities	$ 213

Amount of cumulative gain from upward price adjustment on investment in equity security without readily determinable fair value.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 321
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479536/321-10-50-3

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant