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Cash and Available-for-Sale Securities | 3 Months Ended
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Mar. 31, 2025
Investments, Debt and Equity Securities [Abstract] |
Cash and Available-for-Sale Securities | Cash and Available-for-Sale Securities Cash, cash equivalents and investments consisted of the following (in thousands):
| March 31, 2025
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value |  | Cash and Cash Equivalents |  | Investments
Cash | $ | 841,568 |  |  | $ | — |  |  | $ | — |  |  | $ | 841,568 |  |  | $ | 841,568 |  |  | $ | — |
Time deposits | 770,000 |  |  | — |  |  | — |  |  | 770,000 |  |  | 60,000 |  |  | 710,000 |
Money market funds | 960,378 |  |  | — |  |  | — |  |  | 960,378 |  |  | 960,378 |  |  | — |
Totals | $ | 2,571,946 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,571,946 |  |  | $ | 1,861,946 |  |  | $ | 710,000 |
| December 31, 2024
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value |  | Cash and Cash Equivalents |  | Investments
Cash | $ | 948,894 |  |  | $ | — |  |  | $ | — |  |  | $ | 948,894 |  |  | $ | 948,894 |  |  | $ | — |
Time deposits | 790,000 |  |  | — |  |  | — |  |  | 790,000 |  |  | 210,000 |  |  | 580,000 |
Money market funds | 1,253,970 |  |  | — |  |  | — |  |  | 1,253,970 |  |  | 1,253,970 |  |  | — |
Totals | $ | 2,992,864 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,992,864 |  |  | $ | 2,412,864 |  |  | $ | 580,000 |
Cash equivalents and investments are considered available-for-sale securities. We use the specific-identification method for calculating realized gains and losses on securities sold and include them in interest expense, net in the condensed consolidated statements of loss. Our investment balances represent time deposits with original maturities of greater than three months and less than one year. Interest income from available-for-sale securities was $27.6 million and $23.3 million in the three months ended March 31, 2025 and 2024, respectively.

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- Definition The entire disclosure of the components of cash, cash equivalents, and short-term investments. Short-term investments may include current marketable securities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/320/tableOfContent + Details
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