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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, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Derivatives, Fair Value [Line Items] |  |  |  |
Net Derivatives Gains (Losses) Deferred in AOCI | $ (25) | $ 21 | $ 30 | $ (13)
Currency Swap [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Net Derivatives Gains (Losses) Deferred in AOCI | (3) | 5 | 6 | (5)
Foreign Exchange Forward [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Net Derivatives Gains (Losses) Deferred in AOCI | $ (22) | $ 16 | $ 24 | $ (8)

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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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- Details
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- Details
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