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Derivative Instruments and Hedging Activities - Gains Losses on Freestanding Derivatives (Details) - Other non-interest income - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains (losses) on derivatives not designated as accounting hedges | $ 141 | $ 50 | $ 43
Interest rate contracts |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains (losses) on derivatives not designated as accounting hedges | 103 | 67 | 55
Interest rate contracts | Customer accommodation |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains (losses) on derivatives not designated as accounting hedges | 40 | 32 | 15
Interest rate contracts | Other interest rate exposures |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains (losses) on derivatives not designated as accounting hedges | 76 | (5) | (8)
Commodity contracts | Customer accommodation |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains (losses) on derivatives not designated as accounting hedges | 49 | 28 | 32
Foreign exchange contracts | Customer accommodation |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains (losses) on derivatives not designated as accounting hedges | 14 | 7 | 8
Other contracts |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains (losses) on derivatives not designated as accounting hedges | $ (38) | $ (12) | $ (4)

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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4CC -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL109998890-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959 + Details
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