Investments and Fair Value Measurement - Investments (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Marketable Securities [Line Items]
Marketable debt securities	$ 538	$ 103
Restricted investments	1,808	1,614
Investments	5,108	4,401
Related Party
Marketable Securities [Line Items]
Note receivable from a related party	108	110
U.S. government and agency securities
Marketable Securities [Line Items]
Marketable debt securities	209	44
Restricted investments	1,808	1,614
Commercial paper
Marketable Securities [Line Items]
Marketable debt securities	299	46
Corporate bonds
Marketable Securities [Line Items]
Marketable debt securities	30	13
Didi
Marketable Securities [Line Items]
Non-marketable equity securities:	1,698	1,802
Other
Marketable Securities [Line Items]
Non-marketable equity securities:	316	312
Marketable equity securities:	263	87
Grab
Marketable Securities [Line Items]
Marketable equity securities:	1,838	1,726
Aurora
Marketable Securities [Line Items]
Marketable equity securities:	$ 885	$ 364

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Investments which are not defined as or included in marketable (debt, equity, or other) securities whose use is restricted in whole or in part, generally by contractual agreements or regulatory requirements. For use in an unclassified balance sheet.

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