Short-term and Long-term Investments, Restricted Deposits - Narrative (Details) $ in Millions	12 Months Ended
Dec. 31, 2024 USD ($) position	Dec. 31, 2023 USD ($)
Debt Securities, Available-for-sale [Line Items]
Impairment of private equity investment \| $	$ 50
Accrued interest income \| $	$ 178	$ 153
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 \| position	5,276
Total investment positions \| position	6,750
Commercial mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Investments recorded at fair value that carry weighted average rating of AA plus, period	3 years
Rated Securities \| External Credit Rating, Investment Grade \| Investment Securities
Debt Securities, Available-for-sale [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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Investments Recorded At Fair Value That Carry Rating Of AA Plus, Weighted Average, Duration

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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