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Financial Instruments - Narrative (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Investments, All Other Investments [Abstract] |  |  |  |  |
Maximum remaining contractual maturities of available-for-sale securities (in years) | 2 years |  | 2 years |  |
Realized losses on available-for-sale securities | $ 0 | $ 0 | $ 1,000,000 | $ 0 |
Net unrealized loss position | 81,000,000 |  | 81,000,000 |  | $ 329,400,000
Accrued interest receivable from available-fore-sale investments | $ 1,600,000 |  | $ 1,600,000 |  | $ 1,800,000

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