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DERIVATIVES - Effect of Customer Derivatives and Economic Hedges on Net Income (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amounts Recognized in Noninterest Income | $ (72) | $ 443 | $ 263
Economic hedges | Foreign exchange and interest rate products | Customer interest rate contracts |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amounts Recognized in Noninterest Income | (374) | 1,234 | 687
Economic hedges | Foreign exchange and interest rate products | Derivatives hedging interest rate risk |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amounts Recognized in Noninterest Income | 401 | (1,188) | (620)
Economic hedges | Foreign exchange and interest rate products | Customer foreign exchange contracts |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amounts Recognized in Noninterest Income | (207) | 216 | (166)
Economic hedges | Foreign exchange and interest rate products | Derivatives hedging foreign exchange risk |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amounts Recognized in Noninterest Income | 305 | (263) | 200
Economic hedges | Foreign exchange and interest rate products | Other derivative contracts |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amounts Recognized in Noninterest Income | 779 | (9) | 0
Economic hedges | Foreign exchange and interest rate products | Derivatives hedging commodity price risk |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amounts Recognized in Noninterest Income | (770) | 13 | 0
Economic hedges | Mortgage banking fees | Residential loan commitments |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amounts Recognized in Noninterest Income | (208) | 179 | 8
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 | 152 | (50) | 20
Economic hedges | Mortgage banking fees | Derivative contracts used to hedge residential MSRs(1) |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amounts Recognized in Noninterest Income | $ (150) | 311 | $ 134
Economic hedges | Mortgage banking fees | Interest rate derivative contracts used to hedge residential MSRs, at LOCOM |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Amounts Recognized in Noninterest Income |  | $ (5) |

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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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