Related Party Transactions - Summary of Related Party Transactions (Details) - USD ($) $ in Millions		Jun. 30, 2022		Dec. 31, 2021		Jun. 30, 2021
Assets:
Cash and due from banks	[1]	$ 981		$ 954
Interest bearing deposits with banks	[1]	42,538		47,400
Securities purchased under agreements to resell	[1]	4,941		10,514
Trading assets	[1]	18,708		24,043
Loans	[1]	61,264		55,417
Other	[1]	6,087		5,439
Total assets		171,232	[1]	189,232	[1]	$ 194,888
Liabilities:
Deposits		127,263		143,032		$ 147,365
Trading liabilities	[1]	3,766		3,023
Short-term borrowings	[1]	5,898		6,338
Long-term debt	[1]	16,026		17,236
Other	[1]	2,742		2,411
Total liabilities	[1]	155,695		172,192
Affiliated Entity
Assets:
Cash and due from banks		219		300
Interest bearing deposits with banks		214		59
Securities purchased under agreements to resell		845		594
Trading assets		46		119
Loans		3,457		2,793
Other		343		401
Total assets		5,124		4,266
Liabilities:
Deposits		13,003		9,137
Trading liabilities		476		130
Short-term borrowings		833		309
Long-term debt		5,510		5,511
Other		504		277
Total liabilities		$ 20,326		$ 15,364

[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