Loans And The Allowance For Credit Losses (Analysis Of The Allowance For Credit Losses By Portfolio Segment) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan losses, beginning of period	$ 1,527	$ 1,613	$ 1,556	$ 1,613
Provision for (benefit from) loan losses	64	112	165	235
Loan Losses:
Charge-offs	(123)	(133)	(274)	(278)
Recoveries	21	20	42	42
Recoveries	(102)	(113)	(232)	(236)
Allowance for loan losses, end of period	1,489	1,612	1,489	1,612
Reserve For Unfunded Credit Commitments [Roll Forward]
Reserve for unfunded credit commitments, beginning of year	120	117	130	116
Provision (credit) for unfunded credit losses	4	14	(6)	15
Reserve for unfunded credit commitments, end of year	124	131	124	131
Allowance for credit losses	1,613	1,743	1,613	1,743
Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan losses, beginning of period	781	745	755	743
Provision for (benefit from) loan losses	17	62	122	111
Loan Losses:
Charge-offs	(67)	(70)	(155)	(129)
Recoveries	9	10	18	22
Recoveries	(58)	(60)	(137)	(107)
Allowance for loan losses, end of period	740	747	740	747
Reserve For Unfunded Credit Commitments [Roll Forward]
Reserve for unfunded credit commitments, beginning of year	87	91	95	91
Provision (credit) for unfunded credit losses	1	8	(7)	8
Reserve for unfunded credit commitments, end of year	88	99	88	99
Allowance for credit losses	828	846	828	846
Investor Real Estate
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan losses, beginning of period	108	236	120	240
Provision for (benefit from) loan losses	2	0	(10)	18
Loan Losses:
Charge-offs	0	(2)	0	(24)
Recoveries	0	0	0	0
Recoveries	0	(2)	0	(24)
Allowance for loan losses, end of period	110	234	110	234
Reserve For Unfunded Credit Commitments [Roll Forward]
Reserve for unfunded credit commitments, beginning of year	14	8	15	7
Provision (credit) for unfunded credit losses	1	5	0	6
Reserve for unfunded credit commitments, end of year	15	13	15	13
Allowance for credit losses	125	247	125	247
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan losses, beginning of period	638	632	681	630
Provision for (benefit from) loan losses	45	50	53	106
Loan Losses:
Charge-offs	(56)	(61)	(119)	(125)
Recoveries	12	10	24	20
Recoveries	(44)	(51)	(95)	(105)
Allowance for loan losses, end of period	639	631	639	631
Reserve For Unfunded Credit Commitments [Roll Forward]
Reserve for unfunded credit commitments, beginning of year	19	18	20	18
Provision (credit) for unfunded credit losses	2	1	1	1
Reserve for unfunded credit commitments, end of year	21	19	21	19
Allowance for credit losses	$ 660	$ 650	$ 660	$ 650

Financing Receivable, Allowance for Credit Loss, Including Unfunded Credit Commitments Excluding Accrued Interest

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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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