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Fee-Based Revenue from Contracts with Customers - Asset Management Group Noninterest Income Disaggregation (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Disaggregation of Revenue [Line Items] |  |  |  |
Noninterest income | $ 2,341 | $ 1,797 | $ 6,299 | $ 5,171
Asset Management Fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Noninterest income | 248 |  | 713 |
Brokerage fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Noninterest income | 4 |  | 6 |
Asset Management Group |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Noninterest income | 256 | 221 | 729 | 629
Asset Management Group | In-Scope |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Noninterest income | 252 | 215 | 719 | 615
Asset Management Group | Out-of-Scope |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Noninterest income | 4 | 6 | 10 | 14
Asset Management Group | Personal | In-Scope |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Noninterest income | 196 | 164 | 554 | 465
Asset Management Group | Institutional | In-Scope |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Noninterest income | $ 56 | $ 51 | $ 165 | $ 150

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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=120399700&loc=SL114874048-224260 + Details
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