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Fair Value Measurements - Financial Instruments Measured at Fair Value (Details) - Recurring Basis - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Investments: |  |
Total assets | $ 1,700 | $ 859
Foreign currency forward contracts |  |
Derivatives: |  |
Foreign currency forward contracts | 2 | 9
Cross-currency interest rate swaps |  |
Derivatives: |  |
Derivatives | 25 | 8
Money market funds |  |
Cash equivalents: |  |
Cash equivalents | 113 | 168
Term deposits and certificates of deposit |  |
Cash equivalents: |  |
Cash equivalents | 163 |
Investments: |  |
Investments | 3 |
Term deposits |  |
Cash equivalents: |  |
Cash equivalents |  | 71
Investments: |  |
Investments |  | 28
Commercial paper |  |
Cash equivalents: |  |
Cash equivalents | 2 |
Investments: |  |
Investments | 2 |
Equity investments |  |
Investments: |  |
Investments | 895 | 584
Corporate debt securities |  |
Investments: |  |
Investments | 354 |
Asset-backed securities |  |
Investments: |  |
Investments | 62 |
U.S. treasury securities |  |
Investments: |  |
Investments | 70 |
U.S. agency securities |  |
Investments: |  |
Investments | 8 |
Non-U.S. government securities |  |
Investments: |  |
Investments | 3 |
Level 1 |  |
Investments: |  |
Total assets | 1,008 | 752
Level 1 | Foreign currency forward contracts |  |
Derivatives: |  |
Foreign currency forward contracts | 0 | 0
Level 1 | Cross-currency interest rate swaps |  |
Derivatives: |  |
Derivatives | 0 | 0
Level 1 | Money market funds |  |
Cash equivalents: |  |
Cash equivalents | 113 | 168
Level 1 | Term deposits and certificates of deposit |  |
Cash equivalents: |  |
Cash equivalents | 0 |
Investments: |  |
Investments | 0 |
Level 1 | Term deposits |  |
Cash equivalents: |  |
Cash equivalents |  | 0
Investments: |  |
Investments |  | 0
Level 1 | Commercial paper |  |
Cash equivalents: |  |
Cash equivalents | 0 |
Investments: |  |
Investments | 0 |
Level 1 | Equity investments |  |
Investments: |  |
Investments | 895 | 584
Level 1 | Corporate debt securities |  |
Investments: |  |
Investments | 0 |
Level 1 | Asset-backed securities |  |
Investments: |  |
Investments | 0 |
Level 1 | U.S. treasury securities |  |
Investments: |  |
Investments | 0 |
Level 1 | U.S. agency securities |  |
Investments: |  |
Investments | 0 |
Level 1 | Non-U.S. government securities |  |
Investments: |  |
Investments | 0 |
Level 2 |  |
Investments: |  |
Total assets | 692 | 107
Level 2 | Foreign currency forward contracts |  |
Derivatives: |  |
Foreign currency forward contracts | 2 | 9
Level 2 | Cross-currency interest rate swaps |  |
Derivatives: |  |
Derivatives | 25 | 8
Level 2 | Money market funds |  |
Cash equivalents: |  |
Cash equivalents | 0 | 0
Level 2 | Term deposits and certificates of deposit |  |
Cash equivalents: |  |
Cash equivalents | 163 |
Investments: |  |
Investments | 3 |
Level 2 | Term deposits |  |
Cash equivalents: |  |
Cash equivalents |  | 71
Investments: |  |
Investments |  | 28
Level 2 | Commercial paper |  |
Cash equivalents: |  |
Cash equivalents | 2 |
Investments: |  |
Investments | 2 |
Level 2 | Equity investments |  |
Investments: |  |
Investments | 0 | $ 0
Level 2 | Corporate debt securities |  |
Investments: |  |
Investments | 354 |
Level 2 | Asset-backed securities |  |
Investments: |  |
Investments | 62 |
Level 2 | U.S. treasury securities |  |
Investments: |  |
Investments | 70 |
Level 2 | U.S. agency securities |  |
Investments: |  |
Investments | 8 |
Level 2 | Non-U.S. government securities |  |
Investments: |  |
Investments | $ 3 |

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