FAIR VALUE MEASUREMENT - Valuation Techniques and Inputs for Level 3 Fair Value Measurements (Details)	Jun. 30, 2023 USD ($) year	Dec. 31, 2022 USD ($) year
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketable equity securities	$ 729,000,000	$ 895,000,000
Derivative assets	71,601,000,000	75,306,000,000
Model-based | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities borrowed and purchased under agreements to resell	140,000,000	146,000,000
State and municipal, foreign government, corporate and other debt securities	973,000,000
Marketable equity securities	34,000,000	31,000,000
Loans and leases		1,059,000,000
Mortgage servicing rights	85,000,000	84,000,000
Interest-bearing deposits		15,000,000
Securities loaned and sold under agreement to repurchase	627,000,000
Short-term borrowings and long-term debt	37,378,000,000	36,155,000,000
Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure		970,000,000
Securities Loaned Or Sold Under Agreements To Repurchase And Other Trading Liabilities, Fair Value Disclosure		6,000,000
Model-based | Level 3 | Interest rate contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	6,435,000,000	7,108,000,000
Model-based | Level 3 | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	1,916,000,000	1,437,000,000
Model-based | Level 3 | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	4,062,000,000	4,430,000,000
Model-based | Level 3 | Commodity and other contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	1,772,000,000	2,724,000,000
Model-based | Level 3 | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	1,307,000,000	1,520,000,000
Yield analysis | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities	726,000,000	732,000,000
Asset-backed securities	77,000,000	308,000,000
Price-based | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities	310,000,000	228,000,000
State and municipal, foreign government, corporate and other debt securities	2,349,000,000	2,360,000,000
Marketable equity securities	241,000,000	147,000,000
Asset-backed securities	463,000,000	304,000,000
Non-marketable equities		101,000,000
Nontrading derivatives and other financial assets and liabilities measured on a recurring basis (gross)	95,000,000	57,000,000
Loans and leases	234,000,000	304,000,000
Securities sold, not yet purchased and other trading liabilities	60,000,000
Securities Loaned Or Sold Under Agreements To Repurchase And Other Trading Liabilities, Fair Value Disclosure		47,000,000
Price-based | Level 3 | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	510,000,000	439,000,000
Comparable analysis | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	298,000,000	287,000,000
Cash flow | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	57,000,000
Mortgage servicing rights	597,000,000	$ 580,000,000
Model-based | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest-bearing deposits	$ 26,000,000
Minimum | Model-based | Level 3 | Interest Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities borrowed and purchased under agreements to resell	1.23%	2.61%
Securities loaned and sold under agreement to repurchase	0.0396
Securities Loaned And Sold Under Agreements To Repurchase, Measurement Input		0.0401
Minimum | Model-based | Level 3 | Interest Rate | Interest rate contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0257
Minimum | Model-based | Level 3 | Credit Spread
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities borrowed and purchased under agreements to resell	0.15%	0.15%
State and municipal, foreign government, corporate and other debt securities	0.0035
Minimum | Model-based | Level 3 | Credit Spread | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		0.0116
Minimum | Model-based | Level 3 | Credit Spread | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0007	0.000250
Minimum | Model-based | Level 3 | WAL
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketable equity securities	3	2.24
Mortgage servicing rights | year	3.84	3.92
Minimum | Model-based | Level 3 | WAL | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		2.24
Minimum | Model-based | Level 3 | Recovery
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketable equity securities	$ 7,148,000,000
Marketable equity securities		7,148,000,000
Derivative assets | year	7,148,000,000
Minimum | Model-based | Level 3 | Recovery | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		$ 7,148,000,000
Minimum | Model-based | Level 3 | IR Normal Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Short-term borrowings and long-term debt	0.0028	0.0033
Minimum | Model-based | Level 3 | IR Normal Volatility | Interest rate contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0028	0.0033
Minimum | Model-based | Level 3 | IR Normal Volatility | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		0.0033
Minimum | Model-based | Level 3 | IR Basis | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0028	(0.0423)
Minimum | Model-based | Level 3 | Equity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases		0.0005
Minimum | Model-based | Level 3 | Equity Volatility | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		0.0005
Minimum | Model-based | Level 3 | Equity Volatility | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0	0.0005
Minimum | Model-based | Level 3 | FX Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities Loaned Or Sold Under Agreements To Repurchase And Other Trading Liabilities, Measurement Input		0.0200
Minimum | Model-based | Level 3 | Equity Forward | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.7262	0.6834
Minimum | Model-based | Level 3 | Equity - FX Correlation | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	3	(0.9500)
Minimum | Model-based | Level 3 | Equity-IR Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	(0.2200)
Minimum | Model-based | Level 3 | Equity-IR Correlation | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		(0.1883)
Minimum | Model-based | Level 3 | Commodity Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
State and municipal, foreign government, corporate and other debt securities	(0.2100)
Minimum | Model-based | Level 3 | Commodity Correlation | Commodity and other contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	(0.2100)	(0.3200)
Minimum | Model-based | Level 3 | Commodity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
State and municipal, foreign government, corporate and other debt securities	0.0879
Minimum | Model-based | Level 3 | Commodity Volatility | Commodity and other contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0879	0.1043
Minimum | Model-based | Level 3 | Forward Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
State and municipal, foreign government, corporate and other debt securities	0.1746
Interest-bearing deposits		1.0000
Minimum | Model-based | Level 3 | Forward Price | Commodity and other contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.1746	0.1427
Minimum | Model-based | Level 3 | Equity - Equity Correlation | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	(0.9000)	(0.0398)
Minimum | Yield analysis | Level 3 | Yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities	4.46%	4.41%
Asset-backed securities	6.12%	5.76%
Minimum | Price-based | Level 3 | Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities	$ 1.11	$ 1.04
State and municipal, foreign government, corporate and other debt securities	0.01	0.01
Marketable equity securities	0	0
Asset-backed securities	5.45	10.50
Nontrading derivatives and other financial assets and liabilities measured on a recurring basis (gross)	$ 0.01	$ 80.16
Loans and leases	69.49	0.01
Securities sold, not yet purchased and other trading liabilities	$ 0
Securities Loaned Or Sold Under Agreements To Repurchase And Other Trading Liabilities, Measurement Input		0
Minimum | Price-based | Level 3 | Price | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	3.66
Derivative assets		$ 31.71
Minimum | Price-based | Level 3 | PE Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		14.00
Minimum | Price-based | Level 3 | Revenue Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		3.60
Minimum | Price-based | Level 3 | Equity Forward
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases		0.6834
Minimum | Price-based | Level 3 | Commodity Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases	(0.2100)
Minimum | Price-based | Level 3 | Commodity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases	0.0879
Minimum | Price-based | Level 3 | Forward Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases	0.1746	0.1427
Minimum | Price-based | Level 3 | Recovery Rate | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0600	0.2500
Minimum | Price-based | Level 3 | Credit Correlation | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.3000	0.2500
Minimum | Price-based | Level 3 | Upfront Points | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	(0.0064)
Minimum | Price-based | Level 3 | Cost of Capital
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		0.0810
Minimum | Price-based | Level 3 | Credit Spread Volatility | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		0.3558
Minimum | Comparable analysis | Level 3 | Illiquidity Discount
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	0.1000	0.0860
Minimum | Cash flow | Level 3 | Yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights	0	(0.0040)
Minimum | Cash flow | Level 3 | PE Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	13.80
Minimum | Cash flow | Level 3 | Discount to price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	0.0850
Minimum | Cash flow | Level 3 | Revenue Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	3.70
Minimum | Model-based | Level 3 | Forward Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest-bearing deposits	1.0000
Maximum | Model-based | Level 3 | Interest Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities borrowed and purchased under agreements to resell	1.23%	2.61%
Securities loaned and sold under agreement to repurchase	0.0553
Securities Loaned And Sold Under Agreements To Repurchase, Measurement Input		0.0497
Maximum | Model-based | Level 3 | Interest Rate | Interest rate contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0524
Maximum | Model-based | Level 3 | Credit Spread
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities borrowed and purchased under agreements to resell	0.15%	0.15%
State and municipal, foreign government, corporate and other debt securities	0.0508
Maximum | Model-based | Level 3 | Credit Spread | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		0.0626
Maximum | Model-based | Level 3 | Credit Spread | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0520	0.095510
Maximum | Model-based | Level 3 | WAL
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketable equity securities	3	2.24
Mortgage servicing rights | year	9.17	9.33
Maximum | Model-based | Level 3 | WAL | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		2.24
Maximum | Model-based | Level 3 | Recovery
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketable equity securities	$ 7,148,000,000
Marketable equity securities		7,148,000,000
Derivative assets | year	7,148,000,000
Maximum | Model-based | Level 3 | Recovery | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		$ 7,148,000,000
Maximum | Model-based | Level 3 | IR Normal Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Short-term borrowings and long-term debt	0.1300	0.0182
Maximum | Model-based | Level 3 | IR Normal Volatility | Interest rate contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.1500	0.0182
Maximum | Model-based | Level 3 | IR Normal Volatility | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		0.0147
Maximum | Model-based | Level 3 | IR Basis | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.4499	0.0968
Maximum | Model-based | Level 3 | Equity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases		3.0072
Maximum | Model-based | Level 3 | Equity Volatility | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		3.0072
Maximum | Model-based | Level 3 | Equity Volatility | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	2.7949	3.0072
Maximum | Model-based | Level 3 | FX Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities Loaned Or Sold Under Agreements To Repurchase And Other Trading Liabilities, Measurement Input		0.4000
Maximum | Model-based | Level 3 | Equity Forward | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	2.6504	2.7161
Maximum | Model-based | Level 3 | Equity - FX Correlation | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	3	0.5000
Maximum | Model-based | Level 3 | Equity-IR Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.6000
Maximum | Model-based | Level 3 | Equity-IR Correlation | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		0.6000
Maximum | Model-based | Level 3 | Commodity Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
State and municipal, foreign government, corporate and other debt securities	0.9573
Maximum | Model-based | Level 3 | Commodity Correlation | Commodity and other contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.9573	0.9194
Maximum | Model-based | Level 3 | Commodity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
State and municipal, foreign government, corporate and other debt securities	1.6693
Maximum | Model-based | Level 3 | Commodity Volatility | Commodity and other contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	1.6693	1.5150
Maximum | Model-based | Level 3 | Forward Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
State and municipal, foreign government, corporate and other debt securities	2.1896
Interest-bearing deposits		1.0130
Maximum | Model-based | Level 3 | Forward Price | Commodity and other contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	4.6341	3.8550
Maximum | Model-based | Level 3 | Equity - Equity Correlation | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.7000	0.9868
Maximum | Yield analysis | Level 3 | Yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities	19.42%	20.30%
Asset-backed securities	11.91%	18.58%
Maximum | Price-based | Level 3 | Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities	$ 102.74	$ 99.71
State and municipal, foreign government, corporate and other debt securities	114.74	994.68
Marketable equity securities	10,165.3	9,087.76
Asset-backed securities	140.00	145.00
Nontrading derivatives and other financial assets and liabilities measured on a recurring basis (gross)	$ 106.50	$ 105.32
Loans and leases	106.96	100.53
Securities sold, not yet purchased and other trading liabilities	$ 10,616
Securities Loaned Or Sold Under Agreements To Repurchase And Other Trading Liabilities, Measurement Input		9,087.76
Maximum | Price-based | Level 3 | Price | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	99.49
Derivative assets		$ 99.00
Maximum | Price-based | Level 3 | PE Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		15.70
Maximum | Price-based | Level 3 | Revenue Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		13.90
Maximum | Price-based | Level 3 | Equity Forward
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases		2.7161
Maximum | Price-based | Level 3 | Commodity Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases	0.9573
Maximum | Price-based | Level 3 | Commodity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases	1.6693
Maximum | Price-based | Level 3 | Forward Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases	3.8318	3.2485
Maximum | Price-based | Level 3 | Recovery Rate | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.7500	0.7500
Maximum | Price-based | Level 3 | Credit Correlation | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.9000	0.8000
Maximum | Price-based | Level 3 | Upfront Points | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.9900
Maximum | Price-based | Level 3 | Cost of Capital
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		0.1750
Maximum | Price-based | Level 3 | Credit Spread Volatility | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		0.6479
Maximum | Comparable analysis | Level 3 | Illiquidity Discount
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	0.1200	0.1700
Maximum | Cash flow | Level 3 | Yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights	0.1200	0.1320
Maximum | Cash flow | Level 3 | PE Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	15.40
Maximum | Cash flow | Level 3 | Discount to price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	0.3300
Maximum | Cash flow | Level 3 | Revenue Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	13.77
Maximum | Model-based | Level 3 | Forward Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest-bearing deposits	1.0000
Weighted Average | Model-based | Level 3 | Interest Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities borrowed and purchased under agreements to resell	1.23%	2.61%
Securities loaned and sold under agreement to repurchase	0.0424
Securities Loaned And Sold Under Agreements To Repurchase, Measurement Input		0.0407
Weighted Average | Model-based | Level 3 | Interest Rate | Interest rate contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0313
Weighted Average | Model-based | Level 3 | Credit Spread
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities borrowed and purchased under agreements to resell	0.15%	0.15%
State and municipal, foreign government, corporate and other debt securities	0.0275
Weighted Average | Model-based | Level 3 | Credit Spread | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		0.0594
Weighted Average | Model-based | Level 3 | Credit Spread | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0095	0.010127
Weighted Average | Model-based | Level 3 | WAL
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketable equity securities	3	2.24
Mortgage servicing rights | year	7.71	7.71
Weighted Average | Model-based | Level 3 | WAL | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		2.24
Weighted Average | Model-based | Level 3 | Recovery
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketable equity securities	$ 7,148,000,000
Marketable equity securities		7,148,000,000
Derivative assets | year	7,148,000,000
Weighted Average | Model-based | Level 3 | Recovery | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		$ 7,148,000,000
Weighted Average | Model-based | Level 3 | IR Normal Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Short-term borrowings and long-term debt	0.0107	0.0089
Weighted Average | Model-based | Level 3 | IR Normal Volatility | Interest rate contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0120	0.0096
Weighted Average | Model-based | Level 3 | IR Normal Volatility | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		0.0067
Weighted Average | Model-based | Level 3 | IR Basis | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0171	(0.0003)
Weighted Average | Model-based | Level 3 | Equity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases		0.4262
Weighted Average | Model-based | Level 3 | Equity Volatility | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		0.3391
Weighted Average | Model-based | Level 3 | Equity Volatility | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.3330	0.4147
Weighted Average | Model-based | Level 3 | FX Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities Loaned Or Sold Under Agreements To Repurchase And Other Trading Liabilities, Measurement Input		0.1285
Weighted Average | Model-based | Level 3 | Equity Forward | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	1.0544	1.0350
Weighted Average | Model-based | Level 3 | Equity - FX Correlation | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	3	(0.1633)
Weighted Average | Model-based | Level 3 | Equity-IR Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.3004
Weighted Average | Model-based | Level 3 | Equity-IR Correlation | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		0.3237
Weighted Average | Model-based | Level 3 | Commodity Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
State and municipal, foreign government, corporate and other debt securities	0.4310
Weighted Average | Model-based | Level 3 | Commodity Correlation | Commodity and other contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.4310	0.3670
Weighted Average | Model-based | Level 3 | Commodity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
State and municipal, foreign government, corporate and other debt securities	0.2752
Weighted Average | Model-based | Level 3 | Commodity Volatility | Commodity and other contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.2752	0.3355
Weighted Average | Model-based | Level 3 | Forward Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
State and municipal, foreign government, corporate and other debt securities	1.0259
Interest-bearing deposits		1.0007
Weighted Average | Model-based | Level 3 | Forward Price | Commodity and other contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	1.0470	1.0608
Weighted Average | Model-based | Level 3 | Equity - Equity Correlation | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	(0.1124)	0.8563
Weighted Average | Yield analysis | Level 3 | Yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities	9.45%	9.74%
Asset-backed securities	8.58%	9.34%
Weighted Average | Price-based | Level 3 | Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities	$ 53.57	$ 51.51
State and municipal, foreign government, corporate and other debt securities	83.15	245.85
Marketable equity securities	171.81	114.29
Asset-backed securities	70.87	74.97
Nontrading derivatives and other financial assets and liabilities measured on a recurring basis (gross)	$ 87.76	$ 92.65
Loans and leases	72.06	84.77
Securities sold, not yet purchased and other trading liabilities	$ 72
Securities Loaned Or Sold Under Agreements To Repurchase And Other Trading Liabilities, Measurement Input		41.22
Weighted Average | Price-based | Level 3 | Price | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	36.20
Derivative assets		$ 78.75
Weighted Average | Price-based | Level 3 | PE Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		15.16
Weighted Average | Price-based | Level 3 | Revenue Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		12.40
Weighted Average | Price-based | Level 3 | Equity Forward
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases		1.0349
Weighted Average | Price-based | Level 3 | Commodity Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases	0.4310
Weighted Average | Price-based | Level 3 | Commodity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases	0.2752
Weighted Average | Price-based | Level 3 | Forward Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases	1.0986	1.0507
Weighted Average | Price-based | Level 3 | Recovery Rate | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.3752	0.4227
Weighted Average | Price-based | Level 3 | Credit Correlation | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.5034	0.4238
Weighted Average | Price-based | Level 3 | Upfront Points | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.5449
Weighted Average | Price-based | Level 3 | Cost of Capital
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		0.1044
Weighted Average | Price-based | Level 3 | Credit Spread Volatility | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		0.4047
Weighted Average | Comparable analysis | Level 3 | Illiquidity Discount
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	0.1008	0.1016
Weighted Average | Cash flow | Level 3 | Yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights	0.0512	0.0536
Weighted Average | Cash flow | Level 3 | PE Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	14.23
Weighted Average | Cash flow | Level 3 | Discount to price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	0.1728
Weighted Average | Cash flow | Level 3 | Revenue Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	10.94
Weighted Average | Model-based | Level 3 | Forward Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest-bearing deposits	1.0000