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Derivative Instruments (Hedges of Net Investments in Foreign Operations) (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Derivatives, Fair Value [Line Items] |  |
Net Derivatives Gains (Losses) Deferred in AOCI | $ (15) | $ 95
Currency Swap [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Net Derivatives Gains (Losses) Deferred in AOCI | (1) | 15
Foreign Currency Forwards |  |
Derivatives, Fair Value [Line Items] |  |
Net Derivatives Gains (Losses) Deferred in AOCI | $ (14) | $ 80

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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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Balance Type: | debit
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- Definition 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. + References No definition available. + Details
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- Details
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- Details
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