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Derivative Instruments and Hedging Activities - Net Gains (Losses) Recognized in Earnings Related to Derivatives in Fair Value Hedging and Cash Flow Hedging (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items] |  |
Interest and dividend income, securities | $ 530 | $ 655
Interest and fee income, loans | 6,542 | 6,368
Interest and dividend income, other | 37 | 69
Deposits | (731) | (817)
Securitized debt obligations | (99) | (143)
Senior and subordinated notes | (239) | (314)
Non-interest income | 145 | 157
Amortization of basis adjustment | 36 | 61
Non interest income - Other |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Realized gains on foreign exchange contracts reclassified from AOCI | 392 | (172)
Fair value hedges | Interest income - Investment securities |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net income (expense) recognized on fair value hedges | (11) | 1
Fair value hedges | Interest income - Loans |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net income (expense) recognized on fair value hedges | 0 | 0
Fair value hedges | Interest income - Other |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net income (expense) recognized on fair value hedges | 0 | 0
Fair value hedges | Interest expense - Deposits |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net income (expense) recognized on fair value hedges | (1) | (33)
Fair value hedges | Interest expense - Securitized Debt Obligation |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net income (expense) recognized on fair value hedges | 2 | (30)
Fair value hedges | Interest expense - Senior and Subordinated Debt |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net income (expense) recognized on fair value hedges | 15 | (50)
Fair value hedges | Non interest income - Other |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net income (expense) recognized on fair value hedges | 0 |
Fair value hedges | Interest rate contracts | Interest income - Investment securities |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Interest recognized on derivatives | (11) | 2
Gains (losses) recognized on derivatives | (338) | (111)
Gains (losses) recognized on hedged items | 338 | 110
Excluded component of fair value hedges | 0 |
Fair value hedges | Interest rate contracts | Interest income - Loans |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Interest recognized on derivatives | 0 | 0
Gains (losses) recognized on derivatives | 0 | 0
Gains (losses) recognized on hedged items | 0 | 0
Excluded component of fair value hedges | 0 |
Fair value hedges | Interest rate contracts | Interest income - Other |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Interest recognized on derivatives | 0 | 0
Gains (losses) recognized on derivatives | 0 | 0
Gains (losses) recognized on hedged items | 0 | 0
Excluded component of fair value hedges | 0 |
Fair value hedges | Interest rate contracts | Interest expense - Deposits |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Interest recognized on derivatives | (2) | (36)
Gains (losses) recognized on derivatives | 287 | 95
Gains (losses) recognized on hedged items | (286) | (92)
Excluded component of fair value hedges | 0 |
Fair value hedges | Interest rate contracts | Interest expense - Securitized Debt Obligation |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Interest recognized on derivatives | 12 | (6)
Gains (losses) recognized on derivatives | 282 | 33
Gains (losses) recognized on hedged items | (292) | (57)
Excluded component of fair value hedges | 0 |
Fair value hedges | Interest rate contracts | Interest expense - Senior and Subordinated Debt |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Interest recognized on derivatives | 39 | (11)
Gains (losses) recognized on derivatives | 1,068 | 281
Gains (losses) recognized on hedged items | (1,091) | (320)
Excluded component of fair value hedges | (1) |
Fair value hedges | Interest rate contracts | Non interest income - Other |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Interest recognized on derivatives | 0 |
Gains (losses) recognized on derivatives | (23) |
Gains (losses) recognized on hedged items | 23 |
Excluded component of fair value hedges | 0 |
Cash flow hedges | Interest income - Investment securities |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net income recognized on cash flow hedges | 2 | (4)
Cash flow hedges | Interest income - Loans |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net income recognized on cash flow hedges | 24 | (56)
Cash flow hedges | Interest income - Other |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net income recognized on cash flow hedges | 7 | 12
Cash flow hedges | Interest expense - Deposits |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net income recognized on cash flow hedges | 0 | 0
Cash flow hedges | Interest expense - Securitized Debt Obligation |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net income recognized on cash flow hedges | 0 | 0
Cash flow hedges | Interest expense - Senior and Subordinated Debt |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net income recognized on cash flow hedges | 0 | 0
Cash flow hedges | Non interest income - Other |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net income recognized on cash flow hedges | 0 |
Cash flow hedges | Interest rate contracts | Interest income - Investment securities |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 2 | (4)
Cash flow hedges | Interest rate contracts | Interest income - Loans |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 24 | (56)
Cash flow hedges | Interest rate contracts | Interest income - Other |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 0 | 0
Cash flow hedges | Interest rate contracts | Interest expense - Deposits |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 0 | 0
Cash flow hedges | Interest rate contracts | Interest expense - Securitized Debt Obligation |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 0 | 0
Cash flow hedges | Interest rate contracts | Interest expense - Senior and Subordinated Debt |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 0 | 0
Cash flow hedges | Interest rate contracts | Non interest income - Other |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 0 |
Cash flow hedges | Foreign exchange contracts | Interest income - Investment securities |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 0 | 0
Cash flow hedges | Foreign exchange contracts | Interest income - Loans |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 0 | 0
Cash flow hedges | Foreign exchange contracts | Interest income - Other |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 7 | 12
Cash flow hedges | Foreign exchange contracts | Interest expense - Deposits |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 0 | 0
Cash flow hedges | Foreign exchange contracts | Interest expense - Securitized Debt Obligation |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 0 | 0
Cash flow hedges | Foreign exchange contracts | Interest expense - Senior and Subordinated Debt |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 0 | $ 0
Cash flow hedges | Foreign exchange contracts | Non interest income - Other |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Reclassification adjustment from AOCI on derivatives, net of tax | $ 0 |

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- Definition Net gain (loss) relating to components of the gain (loss) on the fair value hedging instrument excluded from the assessment of fair value hedge effectiveness. Recognized in earnings. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=109977999&loc=d3e76258-113986 + Details
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- Definition Total amount of gain (loss) derived from fair value hedges recognized in earnings in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 + Details
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