XML 73 R60.htm IDEA: XBRL DOCUMENT v3.22.2.2
Accounting for Transfers and Servicing of Financial Assets and Variable Interest Entities - Summary of Investments in Community Development and Tax-advantaged VIEs (Detail) - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Variable Interest Entity [Line Items]    
Investment carrying amount $ 600,973 $ 573,284
Unfunded capital and other commitments 552,995 517,897
Variable Interest Entity Not Primary Beneficiary [Member] | Community Development And Tax Advantaged Investments [Member]    
Variable Interest Entity [Line Items]    
Investment carrying amount 5,617 4,484
Unfunded capital and other commitments 2,842 1,890
Maximum exposure to loss $ 9,922 $ 9,899