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Cash, Cash Equivalents, Restricted Cash and Investments - Schedule of Cash, Cash Equivalents, Short-term Investments and Long-term Investments Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash and cash equivalents | $ 206 | $ 211
Total short-term investments | 1,103 | 1,012
U.S. Treasury securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total short-term investments | 801 | 728
U.S. Treasury securities | Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total short-term investments | 801 | 728
Commercial paper |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total short-term investments | 108 | 132
Commercial paper | Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total short-term investments | 108 | 132
Corporate bonds and notes |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total short-term investments | 194 | 152
Corporate bonds and notes | Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total short-term investments | 194 | 152
Bank deposits | Level 1 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash and cash equivalents | 1 | 1
Money market funds | Level 1 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash and cash equivalents | 190 | 165
U.S. Treasury securities | Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash and cash equivalents | 13 | 40
Commercial paper | Level 2 |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Total cash and cash equivalents | $ 2 | $ 5

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