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Derivative Financial Instruments (Notional Value of Outstanding Cash Flow Hedge Contracts by Year of Maturity and Net Unrealized (Loss) Gain Included in Accumulated Other Comprehensive Income) (Details) - Designated as Hedging Instrument - Cash Flow Hedging - USD ($) $ in Millions | Jun. 30, 2026 | Dec. 31, 2025
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Foreign Exchange Contract |  |
Derivative [Line Items] |  |
Derivative, notional amount | $ 3,060 | $ 3,310
Foreign Exchange Contract, Maturity 2026 |  |
Derivative [Line Items] |  |
Derivative, notional amount | 1,200 | 2,290
Foreign Exchange Contract, Maturity 2027 |  |
Derivative [Line Items] |  |
Derivative, notional amount | 1,530 | 1,020
Foreign Exchange Contract, Maturity 2028 |  |
Derivative [Line Items] |  |
Derivative, notional amount | $ 330 | $ 0

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