Investments and Fair Value Measurement - Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Financial Assets
Non-marketable equity securities	$ 2,926	$ 2,574
Recurring
Financial Assets
Non-marketable equity securities	3	0
Marketable equity securities	3,147	3,401
Note receivable from a related party	127	126
Total financial assets	11,550	10,400
Recurring \| Money market funds
Financial Assets
Money market funds	1,059	1,153
Recurring \| U.S. government and agency securities
Financial Assets
Debt securities available-for-sale	5,381	4,840
Recurring \| Commercial paper
Financial Assets
Debt securities available-for-sale	789	351
Recurring \| Corporate bonds
Financial Assets
Debt securities available-for-sale	940	263
Recurring \| Certificates of deposit
Financial Assets
Debt securities available-for-sale	104	266
Recurring \| Level 1
Financial Assets
Non-marketable equity securities	0	0
Marketable equity securities	3,147	3,401
Note receivable from a related party	0	0
Total financial assets	4,206	4,554
Recurring \| Level 1 \| Money market funds
Financial Assets
Money market funds	1,059	1,153
Recurring \| Level 1 \| U.S. government and agency securities
Financial Assets
Debt securities available-for-sale	0	0
Recurring \| Level 1 \| Commercial paper
Financial Assets
Debt securities available-for-sale	0	0
Recurring \| Level 1 \| Corporate bonds
Financial Assets
Debt securities available-for-sale	0	0
Recurring \| Level 1 \| Certificates of deposit
Financial Assets
Debt securities available-for-sale	0	0
Recurring \| Level 2
Financial Assets
Non-marketable equity securities	0	0
Marketable equity securities	0	0
Note receivable from a related party	0	0
Total financial assets	7,214	5,720
Recurring \| Level 2 \| Money market funds
Financial Assets
Money market funds	0	0
Recurring \| Level 2 \| U.S. government and agency securities
Financial Assets
Debt securities available-for-sale	5,381	4,840
Recurring \| Level 2 \| Commercial paper
Financial Assets
Debt securities available-for-sale	789	351
Recurring \| Level 2 \| Corporate bonds
Financial Assets
Debt securities available-for-sale	940	263
Recurring \| Level 2 \| Certificates of deposit
Financial Assets
Debt securities available-for-sale	104	266
Recurring \| Level 3
Financial Assets
Non-marketable equity securities	3	0
Marketable equity securities	0	0
Note receivable from a related party	127	126
Total financial assets	130	126
Recurring \| Level 3 \| Money market funds
Financial Assets
Money market funds	0	0
Recurring \| Level 3 \| U.S. government and agency securities
Financial Assets
Debt securities available-for-sale	0	0
Recurring \| Level 3 \| Commercial paper
Financial Assets
Debt securities available-for-sale	0	0
Recurring \| Level 3 \| Corporate bonds
Financial Assets
Debt securities available-for-sale	0	0
Recurring \| Level 3 \| Certificates of deposit
Financial Assets
Debt securities available-for-sale	$ 0	$ 0

Fair value portion of asset recognized for present right to economic benefit.

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