Loans and Related Allowance for Credit Losses (Commercial Quality Indicators) (Details) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans, net	[1]	$ 326,025	$ 288,372
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Year one		53,984	33,040
Year two		18,123	18,072
Year three		12,997	19,883
Year four		13,538	13,112
Year five		8,745	10,577
Prior		24,043	23,114
Revolving Loans		93,519	75,160
Revolving Loans Converted to Term		100	120
Total loans, net		225,049	193,078
Commercial | Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Year one		42,944	27,387
Year two		12,916	12,421
Year three		8,411	11,546
Year four		6,560	7,347
Year five		4,506	6,851
Prior		13,716	12,583
Revolving Loans		93,066	74,678
Revolving Loans Converted to Term		100	120
Total loans, net		182,219	152,933
Commercial | Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Year one		9,183	4,404
Year two		4,190	4,407
Year three		3,588	7,354
Year four		6,269	5,054
Year five		3,812	3,200
Prior		8,821	9,114
Revolving Loans		453	482
Total loans, net		36,316	34,015
Commercial | Equipment lease financing
Financing Receivable, Credit Quality Indicator [Line Items]
Year one		1,857	1,249
Year two		1,017	1,244
Year three		998	983
Year four		709	711
Year five		427	526
Prior		1,506	1,417
Total loans, net		6,514	6,130
Pass Rated | Commercial | Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Year one		41,685	27,104
Year two		12,493	12,053
Year three		8,134	10,731
Year four		6,261	6,698
Year five		4,209	6,355
Prior		13,165	11,759
Revolving Loans		89,384	71,230
Revolving Loans Converted to Term		69	90
Total loans, net		175,400	146,020
Pass Rated | Commercial | Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Year one		8,835	4,110
Year two		4,153	4,109
Year three		3,266	6,355
Year four		5,511	4,234
Year five		3,005	2,634
Prior		7,454	7,562
Revolving Loans		450	436
Total loans, net		32,674	29,440
Pass Rated | Commercial | Equipment lease financing
Financing Receivable, Credit Quality Indicator [Line Items]
Year one		1,797	1,212
Year two		962	1,190
Year three		942	942
Year four		670	682
Year five		410	507
Prior		1,495	1,410
Total loans, net		6,276	5,943
Criticized | Commercial | Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Year one		1,259	283
Year two		423	368
Year three		277	815
Year four		299	649
Year five		297	496
Prior		551	824
Revolving Loans		3,682	3,448
Revolving Loans Converted to Term		31	30
Total loans, net		6,819	6,913
Criticized | Commercial | Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Year one		348	294
Year two		37	298
Year three		322	999
Year four		758	820
Year five		807	566
Prior		1,367	1,552
Revolving Loans		3	46
Total loans, net		3,642	4,575
Criticized | Commercial | Equipment lease financing
Financing Receivable, Credit Quality Indicator [Line Items]
Year one		60	37
Year two		55	54
Year three		56	41
Year four		39	29
Year five		17	19
Prior		11	7
Total loans, net		$ 238	$ 187

[1] Our consolidated assets included the following for which we have elected the fair value option: Loans held for sale of $0.9 billion, Loans of $1.3 billion and Other assets of $0.1 billion at December 31, 2022 and Loans held for sale of $1.9 billion, Loans of $1.5 billion and Other assets of $0.1 billion at December 31, 2021.