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Financial Instruments (Tables) | 6 Months Ended
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Jun. 30, 2026
Financial Instruments [Abstract] |
Fair Value, Assets Measured on Recurring Basis | The following tables summarize our assets measured at fair value on a recurring basis and the classification by level of input within the fair value hierarchy (in millions):
|  |  |  | Fair Value Measurement at Reporting Date Using
|  | June 30, 2026 |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
Cash equivalents: |  |  |  |  |  |  |  |
Money market funds |  | $ | 5,223 |  |  | $ | 5,223 |  |  | $ | — |  |  | $ | — |
U.S. government securities |  | 2,077 |  |  | 2,077 |  |  | — |  |  | — |
Time deposits |  | 350 |  |  | — |  |  | 350 |  |  | — |
Corporate debt securities |  | 4,483 |  |  | — |  |  | 4,483 |  |  | — |
Total cash equivalents |  | 12,133 |  |  | 7,300 |  |  | 4,833 |  |  | — |
Marketable securities: |  |  |  |  |  |  |  |
U.S. government securities |  | 41,724 |  |  | 41,724 |  |  | — |  |  | — |
U.S. government agency securities |  | 940 |  |  | 940 |  |  | — |  |  | — |
Corporate debt securities |  | 28,591 |  |  | — |  |  | 28,591 |  |  | — |
Marketable equity securities |  | 3,543 |  |  | 3,543 |  |  | — |  |  | — |
Total marketable securities |  | 74,798 |  |  | 46,207 |  |  | 28,591 |  |  | — |
Restricted cash equivalents |  | 13,554 |  |  | 13,554 |  |  | — |  |  | — |
Other assets |  | 114 |  |  | — |  |  | — |  |  | 114 |
Total |  | $ | 100,599 |  |  | $ | 67,061 |  |  | $ | 33,424 |  |  | $ | 114 |
|  |  |  | Fair Value Measurement at Reporting Date Using
|  | December 31, 2025 |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
Cash equivalents: |  |  |  |  |  |  |  |
Money market funds |  | $ | 27,928 |  |  | $ | 27,928 |  |  | $ | — |  |  | $ | — |
U.S. government securities |  | 1,623 |  |  | 1,623 |  |  | — |  |  | — |
Time deposits |  | 328 |  |  | — |  |  | 328 |  |  | — |
Corporate debt securities |  | 1,603 |  |  | — |  |  | 1,603 |  |  | — |
Total cash equivalents |  | 31,482 |  |  | 29,551 |  |  | 1,931 |  |  | — |
Marketable securities: |  |  |  |  |  |  |  |
U.S. government securities |  | 21,483 |  |  | 21,483 |  |  | — |  |  | — |
U.S. government agency securities |  | 767 |  |  | 767 |  |  | — |  |  | — |
Corporate debt securities |  | 17,477 |  |  | — |  |  | 17,477 |  |  | — |
Marketable equity securities |  | 5,992 |  |  | 5,992 |  |  | — |  |  | — |
Total marketable securities |  | 45,719 |  |  | 28,242 |  |  | 17,477 |  |  | — |
Restricted cash equivalents |  | 2,539 |  |  | 2,539 |  |  | — |  |  | — |
Other assets |  | 106 |  |  | — |  |  | — |  |  | 106 |
Total |  | $ | 79,846 |  |  | $ | 60,332 |  |  | $ | 19,408 |  |  | $ | 106 |
Available-for-sale Marketable Securities | The following tables summarize our available-for-sale marketable debt securities with unrealized losses as of June 30, 2026 and December 31, 2025, aggregated by major security type and the length of time that individual securities have been in a continuous loss position (in millions):
| June 30, 2026
| Less than 12 months |  | 12 months or greater |  | Total
| Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
U.S. government securities | $ | 38,575 |  |  | $ | (107) |  |  | $ | 212 |  |  | $ | (3) |  |  | $ | 38,787 |  |  | $ | (110) |
U.S. government agency securities | 407 |  |  | (3) |  |  | 25 |  |  | — |  |  | 432 |  |  | (3) |
Corporate debt securities | 12,413 |  |  | (45) |  |  | 574 |  |  | (5) |  |  | 12,987 |  |  | (50) |
Total | $ | 51,395 |  |  | $ | (155) |  |  | $ | 811 |  |  | $ | (8) |  |  | $ | 52,206 |  |  | $ | (163) |
| December 31, 2025
| Less than 12 months |  | 12 months or greater |  | Total
| Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
U.S. government securities | $ | 1,491 |  |  | $ | (2) |  |  | $ | 1,570 |  |  | $ | (18) |  |  | $ | 3,061 |  |  | $ | (20) |
U.S. government agency securities | 17 |  |  | — |  |  | 25 |  |  | — |  |  | 42 |  |  | — |
Corporate debt securities | 1,213 |  |  | (1) |  |  | 1,534 |  |  | (20) |  |  | 2,747 |  |  | (21) |
Total | $ | 2,721 |  |  | $ | (3) |  |  | $ | 3,129 |  |  | $ | (38) |  |  | $ | 5,850 |  |  | $ | (41) |
Marketable Securities by Contractual Maturities | The following table classifies our marketable debt securities by contractual maturities (in millions):
| June 30, 2026
Due within one year | $ | 44,551 |
Due after one year to five years | 26,704 |
Total | $ | 71,255 |

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- Definition Tabular disclosure of fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479081/326-30-55-8 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-6 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479106/326-30-50-4 + Details
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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5B -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-5B + Details
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