Loans, Leases and Allowance for Credit Losses - Gross Charge-Offs By Origination Year (Details) - USD ($)
$ in Millions |
3 Months Ended |
6 Months Ended |
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
| Financing Receivable, Allowance for Credit Loss [Line Items] |
|
|
|
|
| Current fiscal year, writeoff |
|
|
$ 0.7
|
$ 1.5
|
| Year before current fiscal year, writeoff |
|
|
1.5
|
6.5
|
| Two years before current fiscal year, writeoff |
|
|
45.2
|
23.6
|
| Three years before current fiscal year, writeoff |
|
|
16.1
|
28.2
|
| Four years before current fiscal year, writeoff |
|
|
48.8
|
0.7
|
| Five years before current fiscal year, writeoff |
|
|
7.5
|
1.7
|
| Revolving Loans Amortized Cost Basis, Writeoff |
|
|
146.9
|
0.6
|
| Charge-offs |
$ 57.6
|
$ 35.3
|
266.7
|
62.8
|
| Mortgage finance |
|
|
|
|
| Financing Receivable, Allowance for Credit Loss [Line Items] |
|
|
|
|
| Current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Year before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Two years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Three years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Four years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Five years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Revolving Loans Amortized Cost Basis, Writeoff |
|
|
0.0
|
0.0
|
| Charge-offs |
0.0
|
0.0
|
0.0
|
0.0
|
| Municipal & nonprofit |
|
|
|
|
| Financing Receivable, Allowance for Credit Loss [Line Items] |
|
|
|
|
| Current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Year before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Two years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Three years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Four years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Five years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Revolving Loans Amortized Cost Basis, Writeoff |
|
|
0.0
|
0.0
|
| Charge-offs |
0.0
|
0.0
|
0.0
|
0.0
|
| Tech & innovation |
|
|
|
|
| Financing Receivable, Allowance for Credit Loss [Line Items] |
|
|
|
|
| Current fiscal year, writeoff |
|
|
0.7
|
1.5
|
| Year before current fiscal year, writeoff |
|
|
1.0
|
6.5
|
| Two years before current fiscal year, writeoff |
|
|
16.5
|
2.4
|
| Three years before current fiscal year, writeoff |
|
|
0.0
|
11.2
|
| Four years before current fiscal year, writeoff |
|
|
5.8
|
0.2
|
| Five years before current fiscal year, writeoff |
|
|
0.1
|
0.0
|
| Revolving Loans Amortized Cost Basis, Writeoff |
|
|
16.9
|
0.0
|
| Charge-offs |
20.2
|
9.7
|
41.0
|
21.8
|
| Equity fund resources |
|
|
|
|
| Financing Receivable, Allowance for Credit Loss [Line Items] |
|
|
|
|
| Current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Year before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Two years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Three years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Four years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Five years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Revolving Loans Amortized Cost Basis, Writeoff |
|
|
0.0
|
0.0
|
| Charge-offs |
0.0
|
0.0
|
0.0
|
0.0
|
| Other commercial and industrial |
|
|
|
|
| Financing Receivable, Allowance for Credit Loss [Line Items] |
|
|
|
|
| Current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Year before current fiscal year, writeoff |
|
|
0.5
|
0.0
|
| Two years before current fiscal year, writeoff |
|
|
26.7
|
0.7
|
| Three years before current fiscal year, writeoff |
|
|
1.1
|
6.1
|
| Four years before current fiscal year, writeoff |
|
|
0.2
|
0.0
|
| Five years before current fiscal year, writeoff |
|
|
6.0
|
0.3
|
| Revolving Loans Amortized Cost Basis, Writeoff |
|
|
129.9
|
0.5
|
| Charge-offs |
4.4
|
6.7
|
164.4
|
7.6
|
| CRE - owner occupied |
|
|
|
|
| Financing Receivable, Allowance for Credit Loss [Line Items] |
|
|
|
|
| Current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Year before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Two years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Three years before current fiscal year, writeoff |
|
|
0.0
|
0.3
|
| Four years before current fiscal year, writeoff |
|
|
0.1
|
0.0
|
| Five years before current fiscal year, writeoff |
|
|
0.0
|
0.2
|
| Revolving Loans Amortized Cost Basis, Writeoff |
|
|
0.0
|
0.0
|
| Charge-offs |
0.1
|
0.5
|
0.1
|
0.5
|
| Hotel franchise finance |
|
|
|
|
| Financing Receivable, Allowance for Credit Loss [Line Items] |
|
|
|
|
| Current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Year before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Two years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Three years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Four years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Five years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Revolving Loans Amortized Cost Basis, Writeoff |
|
|
0.0
|
0.0
|
| Charge-offs |
0.0
|
0.0
|
0.0
|
0.0
|
| Other CRE - non-owner occupied |
|
|
|
|
| Financing Receivable, Allowance for Credit Loss [Line Items] |
|
|
|
|
| Current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Year before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Two years before current fiscal year, writeoff |
|
|
2.0
|
20.2
|
| Three years before current fiscal year, writeoff |
|
|
15.0
|
10.5
|
| Four years before current fiscal year, writeoff |
|
|
42.6
|
0.5
|
| Five years before current fiscal year, writeoff |
|
|
0.1
|
0.8
|
| Revolving Loans Amortized Cost Basis, Writeoff |
|
|
0.0
|
0.0
|
| Charge-offs |
32.0
|
17.5
|
59.7
|
32.0
|
| Residential |
|
|
|
|
| Financing Receivable, Allowance for Credit Loss [Line Items] |
|
|
|
|
| Current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Year before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Two years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Three years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Four years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Five years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Revolving Loans Amortized Cost Basis, Writeoff |
|
|
0.0
|
0.0
|
| Charge-offs |
0.0
|
0.0
|
0.0
|
0.0
|
| Residential EBO |
|
|
|
|
| Financing Receivable, Allowance for Credit Loss [Line Items] |
|
|
|
|
| Current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Year before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Two years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Three years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Four years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Five years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Revolving Loans Amortized Cost Basis, Writeoff |
|
|
0.0
|
0.0
|
| Charge-offs |
0.0
|
0.0
|
0.0
|
0.0
|
| Construction and land development |
|
|
|
|
| Financing Receivable, Allowance for Credit Loss [Line Items] |
|
|
|
|
| Current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Year before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Two years before current fiscal year, writeoff |
|
|
0.0
|
0.3
|
| Three years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Four years before current fiscal year, writeoff |
|
|
0.1
|
0.0
|
| Five years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Revolving Loans Amortized Cost Basis, Writeoff |
|
|
0.0
|
0.0
|
| Charge-offs |
0.1
|
0.3
|
0.1
|
0.3
|
| Other |
|
|
|
|
| Financing Receivable, Allowance for Credit Loss [Line Items] |
|
|
|
|
| Current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Year before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Two years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Three years before current fiscal year, writeoff |
|
|
0.0
|
0.1
|
| Four years before current fiscal year, writeoff |
|
|
0.0
|
0.0
|
| Five years before current fiscal year, writeoff |
|
|
1.3
|
0.4
|
| Revolving Loans Amortized Cost Basis, Writeoff |
|
|
0.1
|
0.1
|
| Charge-offs |
$ 0.8
|
$ 0.6
|
$ 1.4
|
$ 0.6
|