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%