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v3.26.1

Short-term and Long-term Investments, Restricted Deposits - Narrative (Details) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2026 USD ($) position | Dec. 31, 2025 USD ($)
Schedule of Investments and Restricted Deposits by Type [Line Items] |  |
Accrued interest income | $ | $ 174 | $ 180
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] | Other Assets, Current | Other Assets, Current
Positions from which gross unrealized losses were generated | 3,831 |
Total investment positions | 6,224 |
Commercial mortgage-backed securities |  |
Schedule of Investments and Restricted Deposits by Type [Line Items] |  |
Investments recorded at fair value that carry rating of AA Plus, weighted average (in years) | 3 years |
Rated Securities | External Credit Rating, Investment Grade | Investment Securities |  |
Schedule of Investments and Restricted Deposits by Type [Line Items] |  |
Percentage of investments in rated securities carry an investment grade rating by nationally recognized statistical rating organizations | 99.00% |

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