Fair Value Measurement (Schedule Of Carrying Value And Fair Value Of Financial Instruments Not Recorded At Fair Value) (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Financial assets:
Investment securities available for sale	$ 10,915	$ 11,112
Investment securities held to maturity	18	18
Loans held for sale	81	262
Loans and leases, net (2)	47,238	47,310
Restricted equity securities	168	159
Residential mortgage servicing rights	105	99
Derivatives	81	84
Financial liabilities:
Deposits	53,489	54,211
Securities sold under agreements to repurchase	162	207
Borrowings	3,400	3,200
Junior subordinated debentures, at fair value	333	338
Junior and other subordinated debentures, at amortized cost	97	97
Derivatives	181	179
Equity and other investment securities measured at net asset value per share	31	31
Loans and leases, at fair value	79	78
Carrying Value
Financial assets:
Cash and cash equivalents	2,099	2,380
Equity and Other Investment Securities, Excluding Investments Measured At Net Asset Value Per Share	93	82
Investment securities available for sale	10,915	11,112
Investment securities held to maturity	18	18
Loans held for sale	81	262
Loans and leases, net (2)	47,238	47,310
Residential mortgage servicing rights	105	99
Derivatives	81	84
Financial liabilities:
Deposits	53,489	54,211
Securities sold under agreements to repurchase	162	207
Borrowings	3,400	3,200
Junior subordinated debentures, at fair value	333	338
Junior and other subordinated debentures, at amortized cost	97	97
Derivatives	181	179
Fair Value
Financial assets:
Cash and cash equivalents	2,099	2,380
Equity and Other Investment Securities, Excluding Investments Measured At Net Asset Value Per Share	93	82
Investment securities available for sale	10,915	11,112
Investment securities held to maturity	18	19
Loans held for sale	81	262
Loans and leases, net (2)	46,353	47,126
Residential mortgage servicing rights	105	99
Derivatives	81	84
Financial liabilities:
Deposits	53,471	54,197
Securities sold under agreements to repurchase	162	207
Borrowings	3,400	3,201
Junior subordinated debentures, at fair value	333	338
Junior and other subordinated debentures, at amortized cost	100	100
Derivatives	$ 181	$ 179

Equity and Other Investment Securities, Excluding Investments Measured At Net Asset Value Per Share

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