Loans - Delinquency Ratio for Consumer Loan (Detail) - USD ($) $ in Millions		Jun. 30, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Total	[1]	$ 61,798	$ 55,864
Residential Mortgage Loan Delinquency Carried At Lower Of Amortized Cost Or Fair Value Less Cost To Sell		46	24
Consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
2022		1,907	4,521
2021		4,398	3,343
2020		3,100	1,531
2019		1,402	891
2018		807	987
Prior		5,281	4,589
Revolving Loans		208	206
Total		17,103	16,068
Mortgage Loans in Process of Foreclosure, Amount		10	87
Consumer loans | Residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
2022		1,883	4,498
2021		4,376	3,305
2020		3,059	1,496
2019		1,365	872
2018		787	969
Prior		5,005	4,329
Revolving Loans		0	0
Total		16,475	15,469
Consumer loans | Home equity mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
2022		19	15
2021		16	30
2020		34	30
2019		32	18
2018		18	17
Prior		232	215
Revolving Loans		0	0
Total		351	325
Consumer loans | Credit cards
Financing Receivable, Credit Quality Indicator [Line Items]
2022		0	0
2021		0	0
2020		0	0
2019		0	0
2018		0	0
Prior		0	0
Revolving Loans		204	204
Total		204	204
Consumer loans | Other consumer
Financing Receivable, Credit Quality Indicator [Line Items]
2022		5	8
2021		6	8
2020		7	5
2019		5	1
2018		2	1
Prior		44	45
Revolving Loans		4	2
Total		73	70
Consumer loans | Summary of Two Months and Over Contractual Delinquency
Financing Receivable, Credit Quality Indicator [Line Items]
2022		0	5
2021		1	2
2020		3	11
2019		9	13
2018		3	8
Prior		97	65
Revolving Loans		2	3
Total		115	107
Consumer loans | Summary of Two Months and Over Contractual Delinquency | Residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
2022		0	5
2021		1	2
2020		3	11
2019		9	13
2018		3	8
Prior		94	64
Revolving Loans		0	0
Total		110	103
Consumer loans | Summary of Two Months and Over Contractual Delinquency | Home equity mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
2022		0	0
2021		0	0
2020		0	0
2019		0	0
2018		0	0
Prior		3	1
Revolving Loans		0	0
Total		3	1
Consumer loans | Summary of Two Months and Over Contractual Delinquency | Credit cards
Financing Receivable, Credit Quality Indicator [Line Items]
2022		0	0
2021		0	0
2020		0	0
2019		0	0
2018		0	0
Prior		0	0
Revolving Loans		2	3
Total		$ 2	$ 3

[1] The following table summarizes assets and liabilities related to our consolidated variable interest entities ("VIEs") at June 30, 2022 and December 31, 2021. Assets and liabilities exclude intercompany balances that eliminate in consolidation. See Note 17, "Variable Interest Entities," for additional information. June 30, 2022December 31, 2021(in millions)AssetsLoans$118 $46 Other assets46 55 Total assets$164 $101 LiabilitiesInterest, taxes and other liabilities$28 $9 Total liabilities$28 $9