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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, 2025 | Mar. 31, 2024
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts recognized in noninterest income | $ (3) | $ 10
Economic hedges | Customer interest rate contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts recognized in noninterest income | 165 | (494)
Economic hedges | Derivatives hedging interest rate risk |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts recognized in noninterest income | (157) | 503
Economic hedges | Customer foreign exchange contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts recognized in noninterest income | 98 | (110)
Economic hedges | Derivatives hedging foreign exchange risk |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts recognized in noninterest income | (131) | 145
Economic hedges | Customer commodity contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts recognized in noninterest income | 343 | 35
Economic hedges | Derivatives hedging commodity price risk |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts recognized in noninterest income | (336) | (32)
Economic hedges | Residential loan commitments |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts recognized in noninterest income | 6 | (2)
Economic hedges | 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 | (13) | 3
Economic hedges | Derivative contracts used to hedge residential MSRs |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts recognized in noninterest income | $ 22 | $ (38)

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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 -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A + Details
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