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Loans and Leases - Schedule of Loans and Leases Delinquency Status (Details) - USD ($) $ in Millions | Mar. 31, 2022 | Dec. 31, 2021 | Mar. 31, 2021
--- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | $ 65,524 | $ 32,372 | $ 33,181
Total Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 529 | 137 |
30-59 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 287 | 71 |
60-89 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 61 | 16 |
90 days or greater |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 181 | 50 |
Current |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 64,995 | 32,235 |
Commercial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 50,101 | 22,586 |
Commercial | Total Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 365 | 57 |
Commercial | 30-59 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 210 | 33 |
Commercial | 60-89 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 44 | 5 |
Commercial | 90 days or greater |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 111 | 19 |
Commercial | Current |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 49,736 | 22,529 |
Commercial | Commercial construction |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 2,633 | 1,238 |
Commercial | Commercial construction | Total Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 57 | 3 |
Commercial | Commercial construction | 30-59 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 55 | 1 |
Commercial | Commercial construction | 60-89 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 0 | 0 |
Commercial | Commercial construction | 90 days or greater |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 2 | 2 |
Commercial | Commercial construction | Current |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 2,576 | 1,235 |
Commercial | Owner occupied commercial mortgage |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 13,553 | 12,099 |
Commercial | Owner occupied commercial mortgage | Total Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 51 | 31 |
Commercial | Owner occupied commercial mortgage | 30-59 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 22 | 21 |
Commercial | Owner occupied commercial mortgage | 60-89 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 16 | 1 |
Commercial | Owner occupied commercial mortgage | 90 days or greater |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 13 | 9 |
Commercial | Owner occupied commercial mortgage | Current |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 13,502 | 12,068 |
Commercial | Non-owner occupied commercial mortgage |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 9,293 | 3,041 |
Commercial | Non-owner occupied commercial mortgage | Total Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 80 | 5 |
Commercial | Non-owner occupied commercial mortgage | 30-59 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 20 | 3 |
Commercial | Non-owner occupied commercial mortgage | 60-89 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 0 | 0 |
Commercial | Non-owner occupied commercial mortgage | 90 days or greater |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 60 | 2 |
Commercial | Non-owner occupied commercial mortgage | Current |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 9,213 | 3,036 |
Commercial | Commercial and industrial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 22,402 | 5,937 |
Commercial | Commercial and industrial | Total Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 111 | 16 |
Commercial | Commercial and industrial | 30-59 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 73 | 8 |
Commercial | Commercial and industrial | 60-89 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 15 | 3 |
Commercial | Commercial and industrial | 90 days or greater |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 23 | 5 |
Commercial | Commercial and industrial | Current |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 22,291 | 5,921 |
Commercial | Leases |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 2,220 | 271 |
Commercial | Leases | Total Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 66 | 2 |
Commercial | Leases | 30-59 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 40 | 0 |
Commercial | Leases | 60-89 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 13 | 1 |
Commercial | Leases | 90 days or greater |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 13 | 1 |
Commercial | Leases | Current |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 2,154 | 269 |
Consumer |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 15,423 | 9,786 |
Consumer | Total Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 164 | 80 |
Consumer | 30-59 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 77 | 38 |
Consumer | 60-89 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 17 | 11 |
Consumer | 90 days or greater |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 70 | 31 |
Consumer | Current |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 15,259 | 9,706 |
Consumer | Residential mortgage |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 11,711 | 6,088 |
Consumer | Residential mortgage | Total Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 134 | 53 |
Consumer | Residential mortgage | 30-59 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 63 | 24 |
Consumer | Residential mortgage | 60-89 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 12 | 6 |
Consumer | Residential mortgage | 90 days or greater |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 59 | 23 |
Consumer | Residential mortgage | Current |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 11,577 | 6,035 |
Consumer | Revolving mortgage |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 1,840 | 1,818 |
Consumer | Revolving mortgage | Total Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 17 | 14 |
Consumer | Revolving mortgage | 30-59 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 6 | 6 |
Consumer | Revolving mortgage | 60-89 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 2 | 2 |
Consumer | Revolving mortgage | 90 days or greater |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 9 | 6 |
Consumer | Revolving mortgage | Current |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 1,823 | 1,804 |
Consumer | Consumer auto |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 1,320 | 1,332 |
Consumer | Consumer auto | Total Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 8 | 8 |
Consumer | Consumer auto | 30-59 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 6 | 6 |
Consumer | Consumer auto | 60-89 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 1 | 1 |
Consumer | Consumer auto | 90 days or greater |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 1 | 1 |
Consumer | Consumer auto | Current |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 1,312 | 1,324 |
Consumer | Consumer other |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 552 | 548 |
Consumer | Consumer other | Total Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 5 | 5 |
Consumer | Consumer other | 30-59 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 2 | 2 |
Consumer | Consumer other | 60-89 days past due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 2 | 2 |
Consumer | Consumer other | 90 days or greater |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | 1 | 1 |
Consumer | Consumer other | Current |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total loans and leases | $ 547 | $ 543 |

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