Financial Instruments - Carrying Values for Non-Marketable Equity Securities (Details) $ in Millions |
Sep. 30, 2026
USD ($)
investment
|
Dec. 31, 2025
USD ($)
|
|---|---|---|
| Fair Value Disclosures [Abstract] | ||
| Total initial cost of non-marketable equity securities accounted for under the measurement alternative | $ 48,595 | $ 28,429 |
| Cumulative upward adjustments | 88,784 | 44,485 |
| Cumulative downward adjustments (including impairments) | (9,210) | (8,820) |
| Carrying value of non-marketable equity securities accounted for under the measurement alternative | 128,169 | 64,094 |
| Equity method investments and other | 7,061 | 4,593 |
| Total non-marketable securities | $ 135,230 | $ 68,687 |
| Number of investments in non-marketable securities accounted for under the measurement alternative | investment | 1 |
| X | ||||||||||
- Definition Equity Method Investments And Other No definition available.
|
| X | ||||||||||
- Definition Equity Securities Without Readily Determinable Fair Value, Cost No definition available.
|
| X | ||||||||||
- Definition Equity Securities without Readily Determinable Fair Value, Number Of Investments No definition available.
|
| X | ||||||||||
- Definition Amount of investment in equity security without readily determinable fair value. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of cumulative loss from downward price adjustment on investment in equity security without readily determinable fair value. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of cumulative gain from upward price adjustment on investment in equity security without readily determinable fair value. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of long-term investments classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|