Segment Information (Operating Income of Reportable Segments) (Reconciling Items) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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| Segment Reporting Information [Line Items] | |||
| Other trading account assets | $ 336 | $ (17) | $ (524) |
| Segment Reconciling Items | |||
| Segment Reporting Information [Line Items] | |||
| Terminated hedges of foreign currency earnings | (15) | 39 | 284 |
| Current period yield adjustments | 434 | 466 | 475 |
| Principal source of earnings | (8) | 74 | 123 |
| Other trading account assets | 184 | (95) | (94) |
| Foreign currency exchange movements | (135) | (154) | 69 |
| Other activities | $ (20) | $ (18) | $ 9 |
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- Definition Realized Investment Gains (Losses), Other Activities No definition available.
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- Definition Realized Investment Gains (Losses), Yield Adjustments No definition available.
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- Definition Amount before tax of foreign currency transaction realized gain (loss) recognized in the income statement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Aggregate impact of foreign currency derivatives on earnings for the period. Includes impact of foreign currency cash flow hedge ineffectiveness and the ineffectiveness of fair value hedging derivatives and full change in fair value of the foreign currency derivatives not designated as hedging instruments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of realized and unrealized gain (loss), from the firm's direct investment activity, conducted separately from customer trading activities, and includes, but is not limited to, investments in private equity, alternative investment products, real estate, and exchanges and memberships. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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. No definition available.
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- Definition Amount of gain (loss) resulting from the difference between the acquisition price and the selling price or fair value of trading assets and trading liabilities, conducted separately from customer trading activities. Includes, but is not limited to, changes in fair value of trading assets and trading liabilities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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