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Fee-Based Revenue from Contracts with Customers - Corporate & Institutional Banking Noninterest Income Disaggregation (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Disaggregation of Revenue [Line Items] |  |  |  |
Noninterest income | $ 1,549 | $ 1,717 | $ 3,374 | $ 3,303
Corporate & Institutional Banking [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Noninterest income | 726 | 661 | 1,420 | 1,237
Corporate & Institutional Banking [Member] | In-Scope [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Noninterest income | 446 | 404 | 883 | 772
Corporate & Institutional Banking [Member] | Out-of-Scope [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Noninterest income | 280 | 257 | 537 | 465
Corporate & Institutional Banking [Member] | Treasury Management Fees [Member] | In-Scope [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Noninterest income | 218 | 212 | 434 | 411
Corporate & Institutional Banking [Member] | Capital Markets Fees [Member] | In-Scope [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Noninterest income | 187 | 149 | 362 | 276
Corporate & Institutional Banking [Member] | Commercial Mortgage Banking Activities [Member] | In-Scope [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Noninterest income | 24 | 24 | 50 | 49
Corporate & Institutional Banking [Member] | Other | In-Scope [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Noninterest income | $ 17 | $ 19 | $ 37 | $ 36

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- Definition The total amount of noninterest income which may be derived from: (1) fees and commissions; (2) premiums earned; (3) insurance policy charges; (4) the sale or disposal of assets; and (5) other sources not otherwise specified. + 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 210.9-04.13) -URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260 + Details
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