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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, 2022 | Mar. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts Recognized in Noninterest Income | $ 23 | $ (101)
Economic hedges | Foreign exchange and interest rate products | Customer interest rate contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts Recognized in Noninterest Income | (767) | (348)
Economic hedges | Foreign exchange and interest rate products | Derivatives hedging interest rate risk |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts Recognized in Noninterest Income | 793 | 356
Economic hedges | Foreign exchange and interest rate products | Customer foreign exchange contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts Recognized in Noninterest Income | 26 | (116)
Economic hedges | Foreign exchange and interest rate products | Derivatives hedging foreign exchange risk |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts Recognized in Noninterest Income | 3 | 150
Economic hedges | Foreign exchange and interest rate products | Customer commodity contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts Recognized in Noninterest Income | 1,152 | 94
Economic hedges | Foreign exchange and interest rate products | Derivatives hedging commodity price risk |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts Recognized in Noninterest Income | (1,148) | (92)
Economic hedges | Mortgage banking fees | Residential loan commitments |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts Recognized in Noninterest Income | (161) | (238)
Economic hedges | Mortgage banking fees | Derivatives hedging residential loan commitments and mortgage loans held for sale, at fair value |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts Recognized in Noninterest Income | 271 | 275
Economic hedges | Mortgage banking fees | Derivative contracts used to hedge residential MSRs |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts Recognized in Noninterest Income | $ (146) | $ (182)

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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=125515794&loc=SL5618551-113959 + Details
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