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NONINTEREST INCOME - Components of Revenue from Contracts with Customers (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | $ 367 | $ 367
Total revenue from other sources | 177 | 150
Total noninterest income | 544 | 517
Bank-owned life insurance income | 27 | 24
Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 3
Total revenue from other sources | 32 | 29
Total noninterest income | 32 | 32
Consumer Banking | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 223 | 198
Total revenue from other sources | 74 | 60
Commercial Banking | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 144 | 166
Total revenue from other sources | 71 | 61
Non-Core | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
Total revenue from other sources | 0 | 0
Total noninterest income | 0 | 0
Service charges and fees |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 108 | 96
Service charges and fees | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
Service charges and fees | Consumer Banking | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 74 | 63
Service charges and fees | Commercial Banking | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 34 | 33
Service charges and fees | Non-Core | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
Card fees |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 80 | 84
Card fees | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 3
Card fees | Consumer Banking | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 67 | 66
Card fees | Commercial Banking | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 13 | 15
Card fees | Non-Core | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
Capital markets fees |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 95 | 116
Capital markets fees | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
Capital markets fees | Consumer Banking | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
Capital markets fees | Commercial Banking | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 95 | 116
Capital markets fees | Non-Core | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
Wealth fees |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 81 | 68
Wealth fees | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
Wealth fees | Consumer Banking | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 81 | 68
Wealth fees | Commercial Banking | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
Wealth fees | Non-Core | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
Other banking fees |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 3 | 3
Other banking fees | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
Other banking fees | Consumer Banking | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 1 | 1
Other banking fees | Commercial Banking | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 2 | 2
Other banking fees | Non-Core | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | $ 0 | $ 0

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 41 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-41 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 270 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482964/270-10-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (ee) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 Reference 4: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 Reference 5: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 924 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479941/924-10-S99-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-5 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 30 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-42 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-40 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-4 + Details
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