Loans - Disaggregation of Criticized Loans by Year of Origination (Details) - USD ($) $ in Millions		Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, net	[1]	$ 58,987	$ 59,380
Commercial loans
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		4,656	4,748
One year prior to current year		3,868	2,485
Two years prior to current year		3,250	1,814
Three years prior to current year		1,388	3,109
Four years prior to current year		2,354	2,311
Prior		11,069	11,997
Revolving Loans		13,054	15,143
Revolving Loans Converted to Term Loans		318	210
Loans, net		39,957	41,817
Commercial loans | Business and corporate banking
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		1,270	1,116
One year prior to current year		1,148	828
Two years prior to current year		1,074	475
Three years prior to current year		231	815
Four years prior to current year		561	308
Prior		4,253	5,019
Revolving Loans		6,922	7,307
Revolving Loans Converted to Term Loans		265	207
Loans, net		15,724	16,075
Consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		2,726	2,975
One year prior to current year		2,841	4,302
Two years prior to current year		4,125	2,982
Three years prior to current year		2,799	1,361
Four years prior to current year		1,272	764
Prior		5,061	4,954
Revolving Loans		206	225
Loans, net		19,030	17,563
Consumer loans | Residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		2,646	2,887
One year prior to current year		2,764	4,280
Two years prior to current year		4,107	2,949
Three years prior to current year		2,770	1,323
Four years prior to current year		1,244	751
Prior		4,810	4,648
Revolving Loans		0	0
Loans, net		18,341	16,838
Consumer loans | Home equity mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		80	74
One year prior to current year		69	12
Two years prior to current year		11	24
Three years prior to current year		22	32
Four years prior to current year		25	13
Prior		182	215
Revolving Loans		0	0
Loans, net		389	370
Consumer loans | Credit cards
Financing Receivable, Credit Quality Indicator [Line Items]
Current year		0	0
One year prior to current year		0	0
Two years prior to current year		0	0
Three years prior to current year		0	0
Four years prior to current year		0	0
Prior		0	0
Revolving Loans		199	213
Loans, net		$ 199	$ 213

[1] The following table summarizes assets and liabilities related to our consolidated variable interest entities ("VIEs") at December 31, 2023 and 2022. Assets and liabilities exclude intercompany balances that eliminate in consolidation. See Note 27, "Variable Interest Entities," for additional information. At December 31,20232022(in millions)AssetsLoans, net$— $162 Other assets23 44 Total assets$23 $206 LiabilitiesInterest, taxes and other liabilities$17 $22 Total liabilities$17 $22