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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, 2024 | Mar. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts recognized in noninterest income | $ 10 | $ 27
Economic hedges | Customer interest rate contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts recognized in noninterest income | (494) | 34
Economic hedges | Derivatives hedging interest rate risk |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts recognized in noninterest income | 503 | (19)
Economic hedges | Customer foreign exchange contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts recognized in noninterest income | (110) | (4)
Economic hedges | Derivatives hedging foreign exchange risk |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts recognized in noninterest income | 145 | (2)
Economic hedges | Customer commodity contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts recognized in noninterest income | 35 | (475)
Economic hedges | Derivatives hedging commodity price risk |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts recognized in noninterest income | (32) | 486
Economic hedges | Residential loan commitments |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts recognized in noninterest income | (2) | 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 | 3 | (11)
Economic hedges | Derivative contracts used to hedge residential MSRs |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amounts recognized in noninterest income | $ (38) | $ 16

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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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