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Loans and Leases (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans pledged to secure borrowings	$ 6,200		$ 6,200		$ 6,500
Loans and leases, deferred fees and costs	57		57		54
Discounts on acquired loans	622		622		707
Principal Balance of Loan	47,166		47,166		47,776
Carrying balance of PCD loans	46,708		46,708		47,310
Interest income recognized on leases	5	$ 6	11	$ 11
Receivables Acquired with Deteriorated Credit Quality
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal Balance of Loan	428		428		473
Carrying balance of PCD loans	372		372		416
Asset Pledged as Collateral
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans pledged to secure borrowings	$ 29,900		$ 29,900		30,600
Minimum
Financing Receivable, Allowance for Credit Loss [Line Items]
Lease term	3 years		3 years
Maximum
Financing Receivable, Allowance for Credit Loss [Line Items]
Lease term	5 years		5 years
Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Interest Receivable	$ 181		$ 181		$ 186