Fair Value Measurements - Assets and Liabilities Recorded at Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions		Mar. 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Netting, Assets		$ (14,064)	$ (11,991)
Netting Liabilities		(14,064)	(11,991)
Trading assets	[1]	18,761	24,043
Trading liabilities	[1]	4,341	3,023
Debt securities issued by foreign entities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Trading assets		535	167
Equity securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Trading assets		10,942	15,795
Precious metals trading
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Trading assets		3,076	3,907
Trading liabilities		1,316	46
Derivatives liability
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Trading liabilities		2,056	1,874
Derivative assets
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Trading assets		1,836	1,405
Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		69,719	74,511
Netting, Assets		(16,720)	(14,788)
Net Balance, Assets		52,999	59,723
Gross Balance, Liabilities		30,202	28,125
Netting Liabilities		(15,674)	(13,287)
Net Balance, Liabilities		14,528	14,838
Fair Value, Recurring | Domestic Deposits | Domestic Deposits
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		2,379	2,749
Net Balance, Liabilities		2,379	2,749
Fair Value, Recurring | Trading liabilities, excluding derivatives
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		2,285	1,149
Net Balance, Liabilities		2,285	1,149
Fair Value, Recurring | Derivatives liability
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		17,873	15,285
Netting Liabilities		(15,674)	(13,287)
Net Balance, Liabilities		2,199	1,998
Fair Value, Recurring | Derivatives liability | Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		1,543	1,899
Netting Liabilities		0	0
Net Balance, Liabilities		1,543	1,899
Fair Value, Recurring | Derivatives liability | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		13,423	11,126
Netting Liabilities		0	0
Net Balance, Liabilities		13,423	11,126
Fair Value, Recurring | Derivatives liability | Equity contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		1,319	1,361
Netting Liabilities		0	0
Net Balance, Liabilities		1,319	1,361
Fair Value, Recurring | Derivatives liability | Precious metals contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		1,428	779
Netting Liabilities		0	0
Net Balance, Liabilities		1,428	779
Fair Value, Recurring | Derivatives liability | Credit contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		133	82
Netting Liabilities		0	0
Net Balance, Liabilities		133	82
Fair Value, Recurring | Derivatives liability | Other Contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		27	38
Netting Liabilities		0	0
Net Balance, Liabilities		27	38
Fair Value, Recurring | Derivatives liability | Derivatives netting
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		0	0
Netting Liabilities		(15,674)	(13,287)
Net Balance, Liabilities		(15,674)	(13,287)
Fair Value, Recurring | Long-term debt | Fixed rate long-term debt
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		7,665	8,942
Net Balance, Liabilities		7,665	8,942
Fair Value, Recurring | Trading assets, excluding derivatives: | U.S. Treasury, U.S. Government agencies and sponsored enterprises
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		2,372	2,769
Net Balance, Assets		2,372	2,769
Fair Value, Recurring | Trading assets, excluding derivatives: | Debt securities issued by foreign entities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		535	167
Net Balance, Assets		535	167
Fair Value, Recurring | Trading assets, excluding derivatives: | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		10,942	15,795
Net Balance, Assets		10,942	15,795
Fair Value, Recurring | Trading assets, excluding derivatives: | Precious metals trading
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		3,076	3,907
Net Balance, Assets		3,076	3,907
Fair Value, Recurring | Derivative assets
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		18,655	16,229
Netting, Assets		(16,720)	(14,788)
Net Balance, Assets		1,935	1,441
Fair Value, Recurring | Derivative assets | Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		1,752	1,848
Netting, Assets		0	0
Net Balance, Assets		1,752	1,848
Fair Value, Recurring | Derivative assets | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		14,066	11,350
Netting, Assets		0	0
Net Balance, Assets		14,066	11,350
Fair Value, Recurring | Derivative assets | Equity contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		1,540	2,058
Netting, Assets		0	0
Net Balance, Assets		1,540	2,058
Fair Value, Recurring | Derivative assets | Precious metals contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		1,177	940
Netting, Assets		0	0
Net Balance, Assets		1,177	940
Fair Value, Recurring | Derivative assets | Credit contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		117	28
Netting, Assets		0	0
Net Balance, Assets		117	28
Fair Value, Recurring | Derivative assets | Other Contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		3	5
Netting, Assets		0	0
Net Balance, Assets		3	5
Fair Value, Recurring | Derivative assets | Derivatives netting
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Netting, Assets		(16,720)	(14,788)
Net Balance, Assets		(16,720)	(14,788)
Fair Value, Recurring | Securities available-for-sale ("AFS") | U.S. Treasury, U.S. Government agencies and sponsored enterprises
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		31,115	32,866
Net Balance, Assets		31,115	32,866
Fair Value, Recurring | Securities available-for-sale ("AFS") | Debt securities issued by foreign entities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		2,469	2,312
Net Balance, Assets		2,469	2,312
Fair Value, Recurring | Securities available-for-sale ("AFS") | Home equity
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		17	19
Net Balance, Assets		17	19
Fair Value, Recurring | Securities available-for-sale ("AFS") | Other
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		97	101
Net Balance, Assets		97	101
Fair Value, Recurring | Loans | Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		144	48
Net Balance, Assets		144	48
Fair Value, Recurring | Other assets: | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		136	144
Net Balance, Assets		136	144
Fair Value, Recurring | Other assets: | Mortgage servicing rights
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		21	16
Net Balance, Assets		21	16
Fair Value, Recurring | Other assets: | Equity securities measured at net asset value
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		140	138
Net Balance, Assets		140	138
Fair Value, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		26,081	31,296
Gross Balance, Liabilities		988	1,113
Fair Value, Recurring | Level 1 | Domestic Deposits | Domestic Deposits
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		0	0
Fair Value, Recurring | Level 1 | Trading liabilities, excluding derivatives
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		969	1,103
Fair Value, Recurring | Level 1 | Derivatives liability
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		19	10
Fair Value, Recurring | Level 1 | Derivatives liability | Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		10	10
Fair Value, Recurring | Level 1 | Derivatives liability | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		1	0
Fair Value, Recurring | Level 1 | Derivatives liability | Equity contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		5	0
Fair Value, Recurring | Level 1 | Derivatives liability | Precious metals contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		3	0
Fair Value, Recurring | Level 1 | Derivatives liability | Credit contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		0	0
Fair Value, Recurring | Level 1 | Derivatives liability | Other Contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		0	0
Fair Value, Recurring | Level 1 | Derivatives liability | Derivatives netting
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		0	0
Fair Value, Recurring | Level 1 | Long-term debt | Fixed rate long-term debt
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		0	0
Fair Value, Recurring | Level 1 | Trading assets, excluding derivatives: | U.S. Treasury, U.S. Government agencies and sponsored enterprises
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		1,948	2,337
Fair Value, Recurring | Level 1 | Trading assets, excluding derivatives: | Debt securities issued by foreign entities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		535	134
Fair Value, Recurring | Level 1 | Trading assets, excluding derivatives: | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		10,942	15,795
Fair Value, Recurring | Level 1 | Trading assets, excluding derivatives: | Precious metals trading
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 1 | Derivative assets
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		17	12
Fair Value, Recurring | Level 1 | Derivative assets | Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		17	8
Fair Value, Recurring | Level 1 | Derivative assets | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 1 | Derivative assets | Equity contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 1 | Derivative assets | Precious metals contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	4
Fair Value, Recurring | Level 1 | Derivative assets | Credit contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 1 | Derivative assets | Other Contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 1 | Derivative assets | Derivatives netting
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 1 | Securities available-for-sale ("AFS") | U.S. Treasury, U.S. Government agencies and sponsored enterprises
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		10,278	10,817
Fair Value, Recurring | Level 1 | Securities available-for-sale ("AFS") | Debt securities issued by foreign entities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		2,361	2,201
Fair Value, Recurring | Level 1 | Securities available-for-sale ("AFS") | Home equity
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 1 | Securities available-for-sale ("AFS") | Other
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 1 | Loans | Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 1 | Other assets: | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 1 | Other assets: | Mortgage servicing rights
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 1 | Other assets: | Equity securities measured at net asset value
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		43,159	42,722
Gross Balance, Liabilities		26,417	24,414
Fair Value, Recurring | Level 2 | Domestic Deposits | Domestic Deposits
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		1,887	2,214
Fair Value, Recurring | Level 2 | Trading liabilities, excluding derivatives
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		1,316	46
Fair Value, Recurring | Level 2 | Derivatives liability
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		17,621	15,065
Fair Value, Recurring | Level 2 | Derivatives liability | Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		1,530	1,888
Fair Value, Recurring | Level 2 | Derivatives liability | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		13,419	11,124
Fair Value, Recurring | Level 2 | Derivatives liability | Equity contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		1,116	1,194
Fair Value, Recurring | Level 2 | Derivatives liability | Precious metals contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		1,425	779
Fair Value, Recurring | Level 2 | Derivatives liability | Credit contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		131	80
Fair Value, Recurring | Level 2 | Derivatives liability | Other Contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		0	0
Fair Value, Recurring | Level 2 | Derivatives liability | Derivatives netting
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		0	0
Fair Value, Recurring | Level 2 | Long-term debt | Fixed rate long-term debt
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		5,593	7,089
Fair Value, Recurring | Level 2 | Trading assets, excluding derivatives: | U.S. Treasury, U.S. Government agencies and sponsored enterprises
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		424	432
Fair Value, Recurring | Level 2 | Trading assets, excluding derivatives: | Debt securities issued by foreign entities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	33
Fair Value, Recurring | Level 2 | Trading assets, excluding derivatives: | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 2 | Trading assets, excluding derivatives: | Precious metals trading
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		3,076	3,907
Fair Value, Recurring | Level 2 | Derivative assets
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		18,434	15,998
Fair Value, Recurring | Level 2 | Derivative assets | Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		1,733	1,839
Fair Value, Recurring | Level 2 | Derivative assets | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		14,064	11,350
Fair Value, Recurring | Level 2 | Derivative assets | Equity contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		1,343	1,845
Fair Value, Recurring | Level 2 | Derivative assets | Precious metals contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		1,177	936
Fair Value, Recurring | Level 2 | Derivative assets | Credit contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		117	28
Fair Value, Recurring | Level 2 | Derivative assets | Other Contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 2 | Derivative assets | Derivatives netting
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 2 | Securities available-for-sale ("AFS") | U.S. Treasury, U.S. Government agencies and sponsored enterprises
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		20,837	22,049
Fair Value, Recurring | Level 2 | Securities available-for-sale ("AFS") | Debt securities issued by foreign entities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		108	111
Fair Value, Recurring | Level 2 | Securities available-for-sale ("AFS") | Home equity
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 2 | Securities available-for-sale ("AFS") | Other
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 2 | Loans | Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		144	48
Fair Value, Recurring | Level 2 | Other assets: | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		136	144
Fair Value, Recurring | Level 2 | Other assets: | Mortgage servicing rights
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 2 | Other assets: | Equity securities measured at net asset value
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		339	355
Gross Balance, Liabilities		2,797	2,598
Fair Value, Recurring | Level 3 | Domestic Deposits | Domestic Deposits
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		492	535
Fair Value, Recurring | Level 3 | Trading liabilities, excluding derivatives
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		0	0
Fair Value, Recurring | Level 3 | Derivatives liability
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		233	210
Fair Value, Recurring | Level 3 | Derivatives liability | Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		3	1
Fair Value, Recurring | Level 3 | Derivatives liability | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		3	2
Fair Value, Recurring | Level 3 | Derivatives liability | Equity contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		198	167
Fair Value, Recurring | Level 3 | Derivatives liability | Precious metals contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		0	0
Fair Value, Recurring | Level 3 | Derivatives liability | Credit contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		2	2
Fair Value, Recurring | Level 3 | Derivatives liability | Other Contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		27	38
Fair Value, Recurring | Level 3 | Derivatives liability | Derivatives netting
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		0	0
Fair Value, Recurring | Level 3 | Long-term debt | Fixed rate long-term debt
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Liabilities		2,072	1,853
Fair Value, Recurring | Level 3 | Trading assets, excluding derivatives: | U.S. Treasury, U.S. Government agencies and sponsored enterprises
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 3 | Trading assets, excluding derivatives: | Debt securities issued by foreign entities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 3 | Trading assets, excluding derivatives: | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 3 | Trading assets, excluding derivatives: | Precious metals trading
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 3 | Derivative assets
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		204	219
Fair Value, Recurring | Level 3 | Derivative assets | Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		2	1
Fair Value, Recurring | Level 3 | Derivative assets | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		2	0
Fair Value, Recurring | Level 3 | Derivative assets | Equity contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		197	213
Fair Value, Recurring | Level 3 | Derivative assets | Precious metals contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 3 | Derivative assets | Credit contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 3 | Derivative assets | Other Contracts
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		3	5
Fair Value, Recurring | Level 3 | Derivative assets | Derivatives netting
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 3 | Securities available-for-sale ("AFS") | U.S. Treasury, U.S. Government agencies and sponsored enterprises
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 3 | Securities available-for-sale ("AFS") | Debt securities issued by foreign entities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 3 | Securities available-for-sale ("AFS") | Home equity
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		17	19
Fair Value, Recurring | Level 3 | Securities available-for-sale ("AFS") | Other
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		97	101
Fair Value, Recurring | Level 3 | Loans | Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 3 | Other assets: | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		0	0
Fair Value, Recurring | Level 3 | Other assets: | Mortgage servicing rights
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		21	16
Fair Value, Recurring | Level 3 | Other assets: | Equity securities measured at net asset value
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Gross Balance, Assets		$ 0	$ 0

[1] The following table summarizes assets and liabilities related to our consolidated variable interest entities ("VIEs") at March 31, 2022 and December 31, 2021. Assets and liabilities exclude intercompany balances that eliminate in consolidation. See Note 17, "Variable Interest Entities," for additional information. March 31, 2022December 31, 2021(in millions)AssetsLoans$128 $46 Other assets51 55 Total assets$179 $101 LiabilitiesInterest, taxes and other liabilities$31 $9 Total liabilities$31 $9