Investments and Fair Value Measurement - Schedule of Investments (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Marketable Securities [Line Items]
Short-term investments	$ 533	$ 528
Restricted investments	9,026	8,874
Investments	$ 8,109	9,178
Senior Note \| 2028 Exchangeable Senior Notes
Marketable Securities [Line Items]
Percentage of investment owned pledged as collateral	48.00%
Related Party
Marketable Securities [Line Items]
Note receivable from a related party	$ 99	119
U.S. government and agency securities
Marketable Securities [Line Items]
Short-term investments	143	149
Restricted investments	7,006	6,830
Commercial paper
Marketable Securities [Line Items]
Short-term investments	62	75
Restricted investments	72	87
Corporate bonds
Marketable Securities [Line Items]
Short-term investments	274	271
Restricted investments	1,843	1,897
Asset-backed securities
Marketable Securities [Line Items]
Short-term investments	17	0
Certificates of deposit
Marketable Securities [Line Items]
Short-term investments	37	33
Restricted investments	87	38
Mortgage-backed and asset-backed securities
Marketable Securities [Line Items]
Restricted investments	18	22
Non-marketable equity securities \| Didi
Marketable Securities [Line Items]
Non-marketable equity securities	2,337	3,011
Non-marketable equity securities \| Other
Marketable Securities [Line Items]
Non-marketable equity securities	1,800	1,455
Marketable equity securities \| Grab
Marketable Securities [Line Items]
Marketable equity securities	1,961	2,674
Marketable equity securities \| Aurora
Marketable Securities [Line Items]
Marketable equity securities	1,343	1,252
Marketable equity securities \| Other
Marketable Securities [Line Items]
Marketable equity securities	$ 569	$ 667

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