Loans And The Allowance For Credit Losses (Analysis Of The Allowance For Credit Losses By Portfolio Segment) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan losses, beginning of period	$ 1,613	$ 1,576	$ 1,464
Provision for loan losses	456	495	547
Loan Losses:
Charge-offs	(605)	(561)	(490)
Recoveries	92	103	93
Net loan losses	(513)	(458)	(397)
Allowance for loan losses, end of period	1,556	1,613	1,576
Cumulative change in accounting guidance				$ (38)
LoanandLeaseReceivableAllowanceBeginningBalanceadjustedforchangeinaccountingguidance				1,426
Reserve For Unfunded Credit Commitments [Roll Forward]
Reserve for unfunded credit commitments, beginning of year	116	124	118
Provision (credit) for unfunded credit losses	14	(8)	6
Reserve for unfunded credit commitments, end of year	130	116	124
Allowance for credit losses	1,686	1,729	1,700
Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan losses, beginning of period	743	722	665
Provision for loan losses	248	222	205
Loan Losses:
Charge-offs	(280)	(261)	(197)
Recoveries	44	60	52
Net loan losses	(236)	(201)	(145)
Allowance for loan losses, end of period	755	743	722
Cumulative change in accounting guidance				(3)
LoanandLeaseReceivableAllowanceBeginningBalanceadjustedforchangeinaccountingguidance				662
Reserve For Unfunded Credit Commitments [Roll Forward]
Reserve for unfunded credit commitments, beginning of year	91	92	72
Provision (credit) for unfunded credit losses	4	(1)	20
Reserve for unfunded credit commitments, end of year	95	91	92
Allowance for credit losses	850	834	814
Investor Real Estate
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan losses, beginning of period	240	192	121
Provision for loan losses	(61)	87	74
Loan Losses:
Charge-offs	(62)	(42)	0
Recoveries	3	3
Net loan losses	(59)	(39)	0
Allowance for loan losses, end of period	120	240	192
Cumulative change in accounting guidance				(3)
LoanandLeaseReceivableAllowanceBeginningBalanceadjustedforchangeinaccountingguidance				118
Reserve For Unfunded Credit Commitments [Roll Forward]
Reserve for unfunded credit commitments, beginning of year	7	13	21
Provision (credit) for unfunded credit losses	8	(6)	(8)
Reserve for unfunded credit commitments, end of year	15	7	13
Allowance for credit losses	135	247	205
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan losses, beginning of period	630	662	678
Provision for loan losses	269	186	268
Loan Losses:
Charge-offs	(263)	(258)	(293)
Recoveries	45	40	41
Net loan losses	(218)	(218)	(252)
Allowance for loan losses, end of period	681	630	662
Cumulative change in accounting guidance				(32)
LoanandLeaseReceivableAllowanceBeginningBalanceadjustedforchangeinaccountingguidance				$ 646
Reserve For Unfunded Credit Commitments [Roll Forward]
Reserve for unfunded credit commitments, beginning of year	18	19	25
Provision (credit) for unfunded credit losses	2	(1)	(6)
Reserve for unfunded credit commitments, end of year	20	18	19
Allowance for credit losses	$ 701	$ 648	$ 681

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Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
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-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
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