Fair Value Option - Gains (Losses) Related to Borrower-specific Credit Risk (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
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Sep. 30, 2017 |
Sep. 30, 2016 |
Sep. 30, 2017 |
Sep. 30, 2016 |
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| Loans reported as trading account assets | ||||
| Fair Value, Option, Quantitative Disclosures [Line Items] | ||||
| Gains (losses) related to borrower-specific credit risk for assets accounted for under the fair value option | $ 5 | $ 0 | $ 25 | $ 5 |
| Consumer and commercial loans | ||||
| Fair Value, Option, Quantitative Disclosures [Line Items] | ||||
| Gains (losses) related to borrower-specific credit risk for assets accounted for under the fair value option | (10) | 14 | 31 | (25) |
| Loans held-for-sale | ||||
| Fair Value, Option, Quantitative Disclosures [Line Items] | ||||
| Gains (losses) related to borrower-specific credit risk for assets accounted for under the fair value option | $ (2) | $ (10) | $ (3) | $ (6) |
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- Definition This item represents the estimated amount of gains or losses included in earnings during the period attributable to changes in instrument-specific credit risk arising from loans and other receivables held as assets. 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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