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Derivative Instruments (Hedges of Net Investments in Foreign Operations) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Derivatives, Fair Value [Line Items] |  |  |  |
Net Derivatives Gains (Losses) Deferred in AOCI | $ 29 | $ 66 | $ 8 | $ 89
Currency Swap [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Net Derivatives Gains (Losses) Deferred in AOCI | 0 | 0 | 0 | 1
Foreign Currency Forwards |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Net Derivatives Gains (Losses) Deferred in AOCI | $ 29 | $ 66 | $ 8 | $ 88

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- Definition The current period gain (loss) recognized in other comprehensive income related to the effective portion of derivatives designated in cash flow hedges. + References No definition available. + Details
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