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Financial Derivatives (Gains (Losses) Recognized on Fair Value and Cash Flow Hedges in the Consolidated Income Statement) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items] |  |
Loans | $ 1,996 | $ 2,480
Investment Securities | 421 | 582
Borrowed Funds | 95 | 314
Noninterest income | 1,872 | 1,825
Other |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Noninterest income | 483 | 343
Fair value hedges | Designated as Hedging Instrument | Investment Securities | Interest Income |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Hedged items | (8) | 234
Derivatives | 9 | (231)
Amounts related to interest settlements on derivatives | (1) | (2)
Fair value hedges | Designated as Hedging Instrument | Borrowed Funds | Interest Expense |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Hedged items | 646 | (1,361)
Derivatives | (664) | 1,339
Amounts related to interest settlements on derivatives | 134 | 59
Cash flow hedges | Designated as Hedging Instrument | Loans | Interest Income |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of derivative gains (losses) reclassified from AOCI | 100 | 42
Cash flow hedges | Designated as Hedging Instrument | Investment Securities | Interest Income |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of derivative gains (losses) reclassified from AOCI | 22 | 2
Cash flow hedges | Designated as Hedging Instrument | Other | Noninterest Income |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of derivative gains (losses) reclassified from AOCI | $ 13 | $ 1

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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=121590274&loc=SL5618551-113959 + Details
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- Definition The aggregate interest and fee income generated by: (1) loans the Entity has positive intent and ability to hold for the foreseeable future, or until maturity or payoff, including commercial and consumer loans, whether domestic or foreign, which may consist of: (a) industrial and agricultural; (b) real estate; and (c) real estate construction loans; (d) trade financing; (e) lease financing; (f) home equity lines-of-credit; (g) automobile and other vehicle loans; and (h) credit card and other revolving-type loans and (2) loans and leases held-for-sale which may include mortgage loans, direct financing, and sales-type leases. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.1) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 + Details
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