Financial Instruments - Summary of Gains and Losses for Debt Securities (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Fair Value Disclosures [Abstract] | |||
| Unrealized gain (loss) on fair value option debt securities | $ 254 | $ 30 | $ 386 |
| Gross realized gain on debt securities | 572 | 482 | 182 |
| Gross realized loss on debt securities | (316) | (1,553) | (1,833) |
| (Increase) decrease in allowance for credit losses | 30 | (2) | 50 |
| Total gain (loss) on debt securities recognized in other income (expense), net | $ 540 | $ (1,043) | $ (1,215) |