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Marketable and Other Securities | 9 Months Ended
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Sep. 30, 2025
Marketable Securities [Abstract] |
Marketable and Other Securities | Marketable and Other Securities The following table summarizes the fair value of cash equivalents and marketable debt securities, which approximates cost:
| Fair Value Level |  | September 30, 2025 |  | December 31, 2024
Cash and cash equivalents |  |  |  |  |
Cash and time deposits |  |  | $ | 11,946 |  |  | $ | 12,471 |
Available-for-sale debt securities |  |  |  |  |
U.S. government and agencies | 2 |  | 808 |  |  | 26 |
Corporate debt | 2 |  | 3,749 |  |  | 1,541 |
Sovereign debt | 2 |  | 924 |  |  | 785 |
Total available-for-sale debt securities – cash equivalents |  |  | 5,480 |  |  | 2,351 |
Money market funds | 1 |  | 5,484 |  |  | 5,050 |
Total cash and cash equivalents |  |  | $ | 22,910 |  |  | $ | 19,872 |
Marketable debt securities |  |  |  |  |
U.S. government and agencies | 2 |  | $ | 2,479 |  |  | $ | 3,082 |
Corporate debt and other | 2 |  | 3,765 |  |  | 3,592 |
Mortgage and asset-backed | 2 |  | 548 |  |  | 591 |
Total available-for-sale debt securities – marketable securities |  |  | $ | 6,792 |  |  | $ | 7,265 |
Restricted cash |  |  |  |  |
Cash and cash equivalents |  |  | $ | 338 |  |  | $ | 294 |
Money market funds | 1 |  | 2,962 |  |  | 2,798 |
Total restricted cash |  |  | $ | 3,300 |  |  | $ | 3,092 |
Available-for-sale debt securities included above with contractual maturities(a) |  |  |  |
Due in one year or less |  |  | $ | 6,683 |  |  |
Due between one and five years |  |  | 4,992 |  |  |
Total available-for-sale debt securities with contractual maturities |  |  | $ | 11,675 |  |  |
__________ (a)Excludes mortgage and asset-backed securities o f $548 million at September 30, 2025 as these securities are not due at a single maturity date. Proceeds from the sale of available-for-sale debt securities sold prior to maturity were $547 million and $580 million in the three months ended September 30, 2025 and 2024 and $2.7 billion and $1.6 billion in the nine months ended September 30, 2025 and 2024. Net unrealized gains on available-for-sale debt securities were insignificant and $159 million in the three months ended September 30, 2025 and 2024 and insignificant and $160 million in the nine months ended September 30, 2025 and 2024. Cumulative unrealized losses o n available-for-sale debt securities were insignificant at September 30, 2025 and December 31, 2024. The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the condensed consolidated balance sheet to the total shown in the condensed consolidated statement of cash flows:
| September 30, 2025 |  | December 31, 2024
Cash and cash equivalents | $ | 22,910 |  |  | $ | 19,872 |
Restricted cash included in Other current assets | 2,845 |  |  | 2,608 |
Restricted cash included in Other assets | 455 |  |  | 484 |
Total | $ | 26,210 |  |  | $ | 22,964 |

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- Definition The entire disclosure of cash, cash equivalent, and debt and equity securities, including realized and unrealized gain (loss). + 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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