Investments (Narrative) (Details) $ in Millions |
Mar. 31, 2026
USD ($)
|
Dec. 31, 2025
USD ($)
|
|---|---|---|
| Investments [Abstract] | ||
| Equity Securities, FV-NI and without Readily Determinable Fair Value | $ 5,500 | $ 5,500 |
| Equity Method Investments | $ 3,900 | 3,800 |
| Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | 31,000 | |
| Total number of security positions | 42,000 | |
| Equity Securities without Readily Determinable Fair Value, Amount | $ 3,500 | 3,300 |
| Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Cumulative Amount | $ 933 | $ 846 |
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- Definition 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. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI) and investment in equity security without readily determinable fair value. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of investment in equity security without readily determinable fair value. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of cumulative gain from upward price adjustment on investment in equity security without readily determinable fair value. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Balance held at close of period in number of contracts. No definition available.
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- References No definition available.
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