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Loans and leases and allowance for credit losses - Changes in Allowance for Credit Losses (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | $ 2,129 | $ 1,925 | $ 1,469
Allowance on acquired PCD loans |  |  | 99
Provision for credit losses | 610 | 645 | 517
Charge-offs | (713) | (570) | (303)
Recoveries | 158 | 129 | 143
Net charge-offs | (555) | (441) | (160)
Ending balance | 2,184 | 2,129 | 1,925
Commercial and industrial |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | 620 | 568 | 335
Allowance on acquired PCD loans |  |  | 48
Provision for credit losses | 429 | 132 | 244
Charge-offs | (316) | (132) | (119)
Recoveries | 36 | 52 | 60
Net charge-offs | (280) | (80) | (59)
Ending balance | 769 | 620 | 568
Commercial Real Estate |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | 764 | 611 | 506
Allowance on acquired PCD loans |  |  | 49
Provision for credit losses | (89) | 394 | 93
Charge-offs | (134) | (253) | (60)
Recoveries | 58 | 12 | 23
Net charge-offs | (76) | (241) | (37)
Ending balance | 599 | 764 | 611
Residential Real Estate |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | 116 | 115 | 72
Allowance on acquired PCD loans |  |  | 2
Provision for credit losses | (8) | 4 | 43
Charge-offs | (6) | (10) | (12)
Recoveries | 6 | 7 | 10
Net charge-offs | 0 | (3) | (2)
Ending balance | 108 | 116 | 115
Consumer: |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Beginning balance | 629 | 631 | 556
Allowance on acquired PCD loans |  |  | 0
Provision for credit losses | 278 | 115 | 137
Charge-offs | (257) | (175) | (112)
Recoveries | 58 | 58 | 50
Net charge-offs | (199) | (117) | (62)
Ending balance | $ 708 | $ 629 | $ 631

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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 + Details
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- Definition Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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