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DERIVATIVES - Effect of Customer Derivatives and Economic Hedges on Net Income (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts Recognized in Noninterest Income | $ (101) | $ 356
Economic hedges | Foreign exchange and interest rate products | Customer interest rate contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts Recognized in Noninterest Income | (348) | 1,089
Economic hedges | Foreign exchange and interest rate products | Customer foreign exchange contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts Recognized in Noninterest Income | (116) | (30)
Economic hedges | Foreign exchange and interest rate products | Customer commodity contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts Recognized in Noninterest Income | 94 | (63)
Economic hedges | Foreign exchange and interest rate products | Derivative contracts to hedge interest rate risk |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts Recognized in Noninterest Income | 356 | (1,084)
Economic hedges | Foreign exchange and interest rate products | Derivative contracts to hedge foreign exchange risk |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts Recognized in Noninterest Income | 150 | 99
Economic hedges | Foreign exchange and interest rate products | Derivative transactions to hedge commodity price risk |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts Recognized in Noninterest Income | (92) | 63
Economic hedges | Mortgage banking fees | Residential loan commitments |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts Recognized in Noninterest Income | (238) | 140
Economic hedges | Mortgage banking fees | Derivative contracts used to hedge residential loan commitments |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts Recognized in Noninterest Income | 275 | (129)
Economic hedges | Mortgage banking fees | Derivative contracts used to hedge residential MSRs |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts Recognized in Noninterest Income | $ (182) | $ 271

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959 + Details
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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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