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Short-Term Deposits and Marketable Securities - Debt Securities in an Unrealized Loss Position (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Less than 12 months |  |
Unrealized Losses | $ (2) | $ (12)
More than 12 months |  |
Unrealized Losses | (9) | (1)
Total |  |
Fair Value |  | 1,635
Unrealized Losses | (11) | (13)
Unrealized loss |  |
Less than 12 months |  |
Fair Value | 448 | 429
More than 12 months |  |
Fair Value | 443 | 157
Total |  |
Fair Value | 891 | 586
Unrealized gain |  |
Total |  |
Fair Value | 1,561 | 1,049
U.S. Treasury debt securities |  |
Less than 12 months |  |
Unrealized Losses | (2) | (12)
More than 12 months |  |
Unrealized Losses | (9) | (1)
Total |  |
Unrealized Losses | (11) | (13)
U.S. Treasury debt securities | Unrealized loss |  |
Less than 12 months |  |
Fair Value | 448 | 429
More than 12 months |  |
Fair Value | 443 | 157
Total |  |
Fair Value | $ 891 | $ 586

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