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Loans and Leases and the Allowance for Credit Losses - Summary of loans in Accrual and Nonaccrual Status (Detail) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | $ 1,410 | $ 1,724
Accruing Loans Past Due 90 Days or More | 297 | 339
Nonaccrual | 2,302 | 2,166
Loans and leases, net of unearned discount | 134,973 | 134,068
Gross charge-offs | 163 |
Revolving Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans and leases, net of unearned discount | 29,937 | 29,237
Gross charge-offs | 68 |
Revolving Loans Converted to Term Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans and leases, net of unearned discount | 1,595 | 1,619
Gross charge-offs | 1 |
Residential [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 627 | 763
Accruing Loans Past Due 90 Days or More | 245 | 295
Nonaccrual | 202 | 215
Loans and leases, net of unearned discount | 22,192 | 22,353
Gross charge-offs | 1 |
Residential [Member] | Revolving Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Nonaccrual | 1 | 1
Loans and leases, net of unearned discount | 94 | 96
Residential Limited Documentation [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 30 | 31
Nonaccrual | 53 | 55
Loans and leases, net of unearned discount | 884 | 911
Home Equity Lines and Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 34 | 40
Nonaccrual | 87 | 81
Loans and leases, net of unearned discount | 4,558 | 4,649
Gross charge-offs | 1 |
Home Equity Lines and Loans [Member] | Revolving Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Nonaccrual | 1 | 3
Loans and leases, net of unearned discount | 2,973 | 3,025
Home Equity Lines and Loans [Member] | Revolving Loans Converted to Term Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 31 | 37
Nonaccrual | 81 | 73
Loans and leases, net of unearned discount | 1,468 | 1,501
Gross charge-offs | 1 |
Recreational Finance [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 71 | 87
Nonaccrual | 30 | 36
Loans and leases, net of unearned discount | 10,654 | 10,058
Gross charge-offs | 25 |
Automobile [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 43 | 60
Nonaccrual | 13 | 14
Loans and leases, net of unearned discount | 4,308 | 3,992
Gross charge-offs | 8 |
Other [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 20 | 30
Accruing Loans Past Due 90 Days or More | 8 | 7
Nonaccrual | 54 | 52
Loans and leases, net of unearned discount | 2,064 | 2,092
Gross charge-offs | 25 |
Other [Member] | Revolving Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 12 | 20
Accruing Loans Past Due 90 Days or More | 8 | 7
Nonaccrual | 51 | 48
Loans and leases, net of unearned discount | 1,449 | 1,467
Gross charge-offs | 16 |
Other [Member] | Revolving Loans Converted to Term Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 1 | 1
Loans and leases, net of unearned discount | 2 | 4
Current [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 130,964 | 129,839
Current [Member] | Residential [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 21,118 | 21,080
Current [Member] | Residential [Member] | Revolving Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 93 | 95
Current [Member] | Residential Limited Documentation [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 801 | 825
Current [Member] | Home Equity Lines and Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 4,437 | 4,528
Current [Member] | Home Equity Lines and Loans [Member] | Revolving Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 2,972 | 3,022
Current [Member] | Home Equity Lines and Loans [Member] | Revolving Loans Converted to Term Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 1,356 | 1,391
Current [Member] | Recreational Finance [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 10,553 | 9,935
Current [Member] | Automobile [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 4,252 | 3,918
Current [Member] | Other [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 1,982 | 2,003
Current [Member] | Other [Member] | Revolving Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 1,378 | 1,392
Current [Member] | Other [Member] | Revolving Loans Converted to Term Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 1 | 3
Term Loans 2024 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans and leases, net of unearned discount | 5,121 |
Gross charge-offs | 1 |
Term Loans 2024 [Member] | Residential [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans and leases, net of unearned discount | 478 |
Term Loans 2024 [Member] | Recreational Finance [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 1 |
Loans and leases, net of unearned discount | 1,029 |
Term Loans 2024 [Member] | Automobile [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 1 |
Loans and leases, net of unearned discount | 685 |
Term Loans 2024 [Member] | Other [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 1 |
Nonaccrual | 1 |
Loans and leases, net of unearned discount | 71 |
Gross charge-offs | 1 |
Term Loans 2024 [Member] | Current [Member] | Residential [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 478 |
Term Loans 2024 [Member] | Current [Member] | Recreational Finance [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 1,028 |
Term Loans 2024 [Member] | Current [Member] | Automobile [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 684 |
Term Loans 2024 [Member] | Current [Member] | Other [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 69 |
Term Loans 2023 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans and leases, net of unearned discount | 17,431 | 18,423
Gross charge-offs | 15 |
Term Loans 2023 [Member] | Residential [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 6 | 18
Accruing Loans Past Due 90 Days or More | 2 | 1
Nonaccrual | 1 | 1
Loans and leases, net of unearned discount | 1,508 | 1,746
Term Loans 2023 [Member] | Recreational Finance [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 11 | 11
Nonaccrual | 4 | 3
Loans and leases, net of unearned discount | 2,546 | 2,667
Gross charge-offs | 3 |
Term Loans 2023 [Member] | Automobile [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 7 | 8
Nonaccrual | 2 | 2
Loans and leases, net of unearned discount | 1,035 | 1,073
Gross charge-offs | 2 |
Term Loans 2023 [Member] | Other [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 1 | 3
Nonaccrual | 1 | 2
Loans and leases, net of unearned discount | 221 | 255
Gross charge-offs | 3 |
Term Loans 2023 [Member] | Current [Member] | Residential [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 1,499 | 1,726
Term Loans 2023 [Member] | Current [Member] | Recreational Finance [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 2,531 | 2,653
Term Loans 2023 [Member] | Current [Member] | Automobile [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 1,026 | 1,063
Term Loans 2023 [Member] | Current [Member] | Other [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 219 | 250
Term Loans 2022 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans and leases, net of unearned discount | 20,835 | 21,683
Gross charge-offs | 21 |
Term Loans 2022 [Member] | Residential [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 107 | 120
Accruing Loans Past Due 90 Days or More | 21 | 30
Nonaccrual | 15 | 17
Loans and leases, net of unearned discount | 4,810 | 4,876
Term Loans 2022 [Member] | Recreational Finance [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 12 | 16
Nonaccrual | 6 | 5
Loans and leases, net of unearned discount | 2,270 | 2,359
Gross charge-offs | 5 |
Term Loans 2022 [Member] | Automobile [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 11 | 15
Nonaccrual | 2 | 3
Loans and leases, net of unearned discount | 1,017 | 1,114
Gross charge-offs | 2 |
Term Loans 2022 [Member] | Other [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 3 | 3
Nonaccrual | 1 | 1
Loans and leases, net of unearned discount | 159 | 180
Gross charge-offs | 3 |
Term Loans 2022 [Member] | Current [Member] | Residential [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 4,667 | 4,709
Term Loans 2022 [Member] | Current [Member] | Recreational Finance [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 2,252 | 2,338
Term Loans 2022 [Member] | Current [Member] | Automobile [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 1,004 | 1,096
Term Loans 2022 [Member] | Current [Member] | Other [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 155 | 176
Term Loans 2021 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans and leases, net of unearned discount | 14,385 | 15,025
Gross charge-offs | 13 |
Term Loans 2021 [Member] | Residential [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 62 | 88
Accruing Loans Past Due 90 Days or More | 19 | 28
Nonaccrual | 10 | 10
Loans and leases, net of unearned discount | 3,808 | 3,858
Term Loans 2021 [Member] | Home Equity Lines and Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans and leases, net of unearned discount | 2 | 2
Term Loans 2021 [Member] | Recreational Finance [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 14 | 19
Nonaccrual | 6 | 8
Loans and leases, net of unearned discount | 1,810 | 1,884
Gross charge-offs | 6 |
Term Loans 2021 [Member] | Automobile [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 11 | 17
Nonaccrual | 3 | 3
Loans and leases, net of unearned discount | 956 | 1,067
Gross charge-offs | 2 |
Term Loans 2021 [Member] | Other [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 1 | 2
Nonaccrual |  | 1
Loans and leases, net of unearned discount | 106 | 121
Gross charge-offs | 1 |
Term Loans 2021 [Member] | Current [Member] | Residential [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 3,717 | 3,732
Term Loans 2021 [Member] | Current [Member] | Home Equity Lines and Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 2 | 2
Term Loans 2021 [Member] | Current [Member] | Recreational Finance [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 1,790 | 1,857
Term Loans 2021 [Member] | Current [Member] | Automobile [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 942 | 1,047
Term Loans 2021 [Member] | Current [Member] | Other [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 105 | 118
Term Loans 2020 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans and leases, net of unearned discount | 10,088 | 10,555
Gross charge-offs | 9 |
Term Loans 2020 [Member] | Residential [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 30 | 52
Accruing Loans Past Due 90 Days or More | 15 | 17
Nonaccrual | 2 | 3
Loans and leases, net of unearned discount | 2,580 | 2,615
Term Loans 2020 [Member] | Home Equity Lines and Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans and leases, net of unearned discount | 2 | 2
Term Loans 2020 [Member] | Recreational Finance [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 13 | 14
Nonaccrual | 4 | 6
Loans and leases, net of unearned discount | 1,250 | 1,306
Gross charge-offs | 4 |
Term Loans 2020 [Member] | Automobile [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 6 | 9
Nonaccrual | 2 | 2
Loans and leases, net of unearned discount | 379 | 438
Gross charge-offs | 1 |
Term Loans 2020 [Member] | Other [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans and leases, net of unearned discount | 28 | 33
Gross charge-offs | 1 |
Term Loans 2020 [Member] | Current [Member] | Residential [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 2,533 | 2,543
Term Loans 2020 [Member] | Current [Member] | Home Equity Lines and Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 2 | 2
Term Loans 2020 [Member] | Current [Member] | Recreational Finance [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 1,233 | 1,286
Term Loans 2020 [Member] | Current [Member] | Automobile [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 371 | 427
Term Loans 2020 [Member] | Current [Member] | Other [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 28 | 33
Term Loans 2019 [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans and leases, net of unearned discount |  | 10,062
Term Loans 2019 [Member] | Residential [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due |  | 28
Accruing Loans Past Due 90 Days or More |  | 14
Nonaccrual |  | 4
Loans and leases, net of unearned discount |  | 1,261
Term Loans 2019 [Member] | Home Equity Lines and Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans and leases, net of unearned discount |  | 13
Term Loans 2019 [Member] | Recreational Finance [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due |  | 11
Nonaccrual |  | 5
Loans and leases, net of unearned discount |  | 797
Term Loans 2019 [Member] | Automobile [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due |  | 6
Nonaccrual |  | 2
Loans and leases, net of unearned discount |  | 206
Term Loans 2019 [Member] | Other [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans and leases, net of unearned discount |  | 13
Term Loans 2019 [Member] | Current [Member] | Residential [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans |  | 1,215
Term Loans 2019 [Member] | Current [Member] | Home Equity Lines and Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans |  | 13
Term Loans 2019 [Member] | Current [Member] | Recreational Finance [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans |  | 781
Term Loans 2019 [Member] | Current [Member] | Automobile [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans |  | 198
Term Loans 2019 [Member] | Current [Member] | Other [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans |  | 13
Term Loans Prior Period [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans and leases, net of unearned discount | 35,581 | 27,464
Gross charge-offs | 35 |
Term Loans Prior Period [Member] | Residential [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 422 | 457
Accruing Loans Past Due 90 Days or More | 188 | 205
Nonaccrual | 173 | 179
Loans and leases, net of unearned discount | 8,914 | 7,901
Gross charge-offs | 1 |
Term Loans Prior Period [Member] | Residential Limited Documentation [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 30 | 31
Nonaccrual | 53 | 55
Loans and leases, net of unearned discount | 884 | 911
Term Loans Prior Period [Member] | Home Equity Lines and Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 3 | 3
Nonaccrual | 5 | 5
Loans and leases, net of unearned discount | 113 | 106
Term Loans Prior Period [Member] | Recreational Finance [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 20 | 16
Nonaccrual | 10 | 9
Loans and leases, net of unearned discount | 1,749 | 1,045
Gross charge-offs | 7 |
Term Loans Prior Period [Member] | Automobile [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 7 | 5
Nonaccrual | 4 | 2
Loans and leases, net of unearned discount | 236 | 94
Gross charge-offs | 1 |
Term Loans Prior Period [Member] | Other [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
30-89 Days Past Due | 1 | 1
Loans and leases, net of unearned discount | 28 | 19
Term Loans Prior Period [Member] | Current [Member] | Residential [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 8,131 | 7,060
Term Loans Prior Period [Member] | Current [Member] | Residential Limited Documentation [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 801 | 825
Term Loans Prior Period [Member] | Current [Member] | Home Equity Lines and Loans [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 105 | 98
Term Loans Prior Period [Member] | Current [Member] | Recreational Finance [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 1,719 | 1,020
Term Loans Prior Period [Member] | Current [Member] | Automobile [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | 225 | 87
Term Loans Prior Period [Member] | Current [Member] | Other [Member] |  |
Financing Receivable Recorded Investment [Line Items] |  |
Total loans | $ 27 | $ 18

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- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481990/310-10-45-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-4 + Details
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