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Allowance for Credit Losses (Narrative) (Details) $ in Thousands |  | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Feb. 28, 2023 USD ($) | Dec. 31, 2024 | Dec. 31, 2023 USD ($) risk_code | Jun. 30, 2024 | Dec. 31, 2027 | Dec. 31, 2026 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 USD ($) risk_code | Dec. 31, 2022 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |
Length of time projected by model |  |  |  |  |  |  |  |  | 10 years |
Days Past Due on Leases and Equipment Finance |  |  |  |  |  |  |  |  | 181 days |
Interest Income on Non-Accrual Loans and Leases | $ |  |  |  |  |  |  |  |  | $ 0 | $ 0
Allowance for Credit Loss (ACL) | $ |  |  | $ 464,079 |  |  |  |  |  | 464,079 | 315,356
Initial ACL on PCD loans and unfunded commitments acquired during the period | $ |  |  |  |  |  |  |  |  | 32,300 |
Initial Provision for Credit Losses for Loans and Unfunded Commitments | $ | $ 88,400 |  |  |  |  |  |  |  | $ 209,979 | 83,605
Moody's Analytics November S2 scenario |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |
Probability economy performs better than scenario |  |  | 75.00% |  |  |  |  |  |  |
Probability economy performs worse than scenario |  |  | 25.00% |  |  |  |  |  |  |
Non Homogeneous |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |
Financing Receivable, Threshold Period Past Due |  |  | 90 days |  |  |  |  |  | 90 days |
Restructured Loans [Member] |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |
Available commitments for troubled debt restructurings outstanding | $ |  |  |  |  |  |  |  |  |  | $ 0
Pass | Non Homogeneous | Minimum |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |
Internal risk rating code (number) |  |  | 1 |  |  |  |  |  | 1 |
Pass | Non Homogeneous | Maximum |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |
Internal risk rating code (number) |  |  | 9 |  |  |  |  |  | 9 |
Watch | Non Homogeneous | Minimum |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |
Internal risk rating code (number) |  |  | 10 |  |  |  |  |  | 10 |
Watch | Non Homogeneous | Maximum |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |
Internal risk rating code (number) |  |  | 11 |  |  |  |  |  | 11 |
Special mention | Non Homogeneous |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |
Internal risk rating code (number) |  |  | 12 |  |  |  |  |  | 12 |
Substandard | Non Homogeneous | Minimum |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |
Internal risk rating code (number) |  |  | 13 |  |  |  |  |  | 13 |
Substandard | Non Homogeneous | Maximum |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |
Internal risk rating code (number) |  |  | 14 |  |  |  |  |  | 14 |
Doubtful | Non Homogeneous |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |
Internal risk rating code (number) |  |  | 15 |  |  |  |  |  | 15 |
Loss | Non Homogeneous |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |
Internal risk rating code (number) |  |  | 16 |  |  |  |  |  | 16 |
Loss | Non Homogeneous | Maximum |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |
Internal risk rating code (number) |  |  | 16 |  |  |  |  |  | 16 |
Expected | Moody's Analytics' November consensus |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |
Real GDP Growth |  |  |  |  | 2.40% | 2.30% | 1.70% | 1.70% |  |
Unemployment Rate |  |  |  |  | 3.90% | 4.00% | 4.10% | 4.00% |  |
Fed Funds Rate |  |  |  |  | 2.90% | 3.20% | 4.20% | 5.10% |  |
Expected | Moody's Analytics November S2 scenario |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |
Real GDP Growth |  |  |  |  | 2.80% | 2.90% | 1.50% | 0.20% |  |
Unemployment Rate |  |  |  |  | 4.00% | 4.00% | 5.30% | 5.70% |  |
Fed Funds Rate |  |  |  |  | 2.90% | 2.40% | 2.50% | 4.60% |  |
Expected | Maximum | Moody's Analytics November S2 scenario |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |  |  |
Unemployment Rate |  | 6.50% |  |  |  |  |  |  |  |
Percent decrease of stock market |  | 20.00% |  |  |  |  |  |  |  |
Change in Unemployment Rate |  |  |  | 1.00% |  |  |  |  |  |

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