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Financial Instruments - Narrative (Details) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2024 USD ($) security | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) security | Jun. 30, 2023 USD ($) | Dec. 31, 2023 USD ($) security
Investments, Debt and Equity Securities [Abstract] |  |  |  |  |
Impairment charges | $ 0 | $ 0 | $ 0 | $ 0 |
Credit losses related allowance | $ 0 |  | $ 0 |  | $ 0
Number of AFS securities in loss positions | security | 341 |  | 341 |  | 392
Net gains (losses) on equity investments | $ (22,000,000) | $ 36,000,000 | $ (35,000,000) | $ 17,000,000 |
Equity securities without readily determinable fair value, amount | $ 42,000,000 |  | $ 42,000,000 |  | $ 42,000,000

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