Financial Instruments - Summary of Gains and Losses for Debt Securities (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
|
| Fair Value Disclosures [Abstract] | |||
| Unrealized gain (loss) on fair value option debt securities | $ 386 | $ (557) | $ (122) |
| Gross realized gain on debt securities | 182 | 103 | 432 |
| Gross realized loss on debt securities | (1,833) | (1,588) | (329) |
| (Increase) decrease in allowance for credit losses | 50 | (22) | (91) |
| Total gain (loss) on debt securities recognized in other income (expense), net | $ (1,215) | $ (2,064) | $ (110) |