FAIR VALUE MEASUREMENT - Valuation Techniques and Inputs for Level 3 Fair Value Measurements (Details)	Mar. 31, 2022 USD ($) year	Dec. 31, 2021 USD ($) year
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketable equity securities	$ 957,000,000	$ 1,032,000,000
Model-based | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities borrowed and purchased under agreements to resell	202,000,000	231,000,000
State and municipal, foreign government, corporate and other debt securities	388,000,000	415,000,000
Marketable equity securities	36,000,000	43,000,000
Non-marketable equities	42,000,000	83,000,000
Loans and leases	604,000,000	691,000,000
Mortgage servicing rights	72,000,000	73,000,000
Interest-bearing deposits	191,000,000	183,000,000
Securities loaned and sold under agreement to repurchase	612,000,000	643,000,000
Short-term borrowings and long-term debt	27,176,000,000	25,514,000,000
Model-based | Level 3 | Interest rate contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	5,143,000,000	6,054,000,000
Model-based | Level 3 | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	1,818,000,000	1,364,000,000
Model-based | Level 3 | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	4,987,000,000	4,690,000,000
Model-based | Level 3 | Commodity and other contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	3,109,000,000	3,172,000,000
Model-based | Level 3 | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	1,718,000,000	1,480,000,000
Price-based | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities	331,000,000	279,000,000
State and municipal, foreign government, corporate and other debt securities	2,755,000,000	2,264,000,000
Marketable equity securities	152,000,000	128,000,000
Asset-backed securities	337,000,000	386,000,000
Non-marketable equities	93,000,000	121,000,000
Nontrading derivatives and other financial assets and liabilities measured on a recurring basis (gross)	63,000,000	69,000,000
Securities sold, not yet purchased and other trading liabilities	53,000,000	63,000,000
Price-based | Level 3 | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	457,000,000	427,000,000
Yield analysis | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities	406,000,000	526,000,000
Asset-backed securities	123,000,000	208,000,000
Comparable analysis | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	161,000,000	112,000,000
Cash flow | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights	$ 448,000,000	$ 331,000,000
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%
Minimum | Model-based | Level 3 | Credit Spread | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0137	0.0140
Minimum | Model-based | Level 3 | Credit Spread | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0006	0.000100
Minimum | Model-based | Level 3 | Interest Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities borrowed and purchased under agreements to resell	0.93%	0.26%
Securities loaned and sold under agreement to repurchase	0.0058	0.0012
Minimum | Model-based | Level 3 | Yield | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	(0.0006)
Minimum | Model-based | Level 3 | Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	$ 187.74	$ 3
Minimum | Model-based | Level 3 | Adjustment Factor
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	0.33	0.33
Minimum | Model-based | Level 3 | Revenue Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	18.50	19.80
Minimum | Model-based | Level 3 | IR Normal Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest-bearing deposits	0.0040	0.0034
Short-term borrowings and long-term debt	0.0027	0.0007
Minimum | Model-based | Level 3 | IR Normal Volatility | Interest rate contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0029	0.0024
Minimum | Model-based | Level 3 | IR Normal Volatility | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0027	0.0024
Minimum | Model-based | Level 3 | FX Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Short-term borrowings and long-term debt		0.0006
Minimum | Model-based | Level 3 | FX Volatility | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		0.0213
Minimum | Model-based | Level 3 | Cost of Capital
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	0.1750	0.1750
Minimum | Model-based | Level 3 | Equity - Equity Correlation | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	(0.9500)	(0.0649)
Minimum | Model-based | Level 3 | Equity-IR Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Short-term borrowings and long-term debt	(0.1000)	(0.0353)
Minimum | Model-based | Level 3 | Equity Forward
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest-bearing deposits	0.6082	0.5799
Short-term borrowings and long-term debt	0.6082
Minimum | Model-based | Level 3 | Equity Forward | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.6082	0.5799
Minimum | Model-based | Level 3 | Equity - FX Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Short-term borrowings and long-term debt		(0.9500)
Minimum | Model-based | Level 3 | Equity - FX Correlation | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	(0.0649)	(0.9500)
Minimum | Model-based | Level 3 | Forward Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases	0.2378	0.2695
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	0.2378	0.0800
Minimum | Model-based | Level 3 | Commodity Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases	(0.5132)	(0.5052)
Minimum | Model-based | Level 3 | Commodity Correlation | Commodity and other contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	(0.5132)	(0.5052)
Minimum | Model-based | Level 3 | Equity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
State and municipal, foreign government, corporate and other debt securities		0.0008
Loans and leases	0.2451	0.2248
Interest-bearing deposits	0.0007	0.0008
Short-term borrowings and long-term debt	0.0007	0.0008
Minimum | Model-based | Level 3 | Equity Volatility | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0007	0.0008
Minimum | Model-based | Level 3 | WAL
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketable equity securities | year	1.49	1.73
Mortgage servicing rights | year	3.7	2.75
Minimum | Model-based | Level 3 | Recovery
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketable equity securities	$ 7,148,000,000	$ 7,148,000,000
Minimum | Model-based | Level 3 | Commodity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases	0.1533	0.1087
Minimum | Model-based | Level 3 | Commodity Volatility | Commodity and other contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.1533	0.1087
Minimum | Price-based | Level 3 | Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities	$ 1.44	$ 4
State and municipal, foreign government, corporate and other debt securities	0	0
Marketable equity securities	0	0
Asset-backed securities	22.50	5
Nontrading derivatives and other financial assets and liabilities measured on a recurring basis (gross)	87.71	94
Securities sold, not yet purchased and other trading liabilities	0	0
Minimum | Price-based | Level 3 | Price | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	$ 25.50	$ 40
Minimum | Price-based | Level 3 | Illiquidity Discount
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		0.1000
Minimum | Price-based | Level 3 | PE Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	10.00
Minimum | Price-based | Level 3 | Credit Correlation | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.2500	0.3000
Minimum | Price-based | Level 3 | Upfront Points | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	(0.0278)	0.0274
Minimum | Price-based | Level 3 | Recovery Rate | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.2500	0.2000
Minimum | Yield analysis | Level 3 | Yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities	2.89%	1.43%
Asset-backed securities	3.99%	2.43%
Minimum | Comparable analysis | Level 3 | Illiquidity Discount
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	0.1000
Minimum | Comparable analysis | Level 3 | PE Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		11.00
Minimum | Cash flow | Level 3 | Yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights	0.0010	(0.0120)
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%
Maximum | Model-based | Level 3 | Credit Spread | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0535	0.0696
Maximum | Model-based | Level 3 | Credit Spread | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0875	0.087472
Maximum | Model-based | Level 3 | Interest Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities borrowed and purchased under agreements to resell	1.61%	0.72%
Securities loaned and sold under agreement to repurchase	0.0280	0.0195
Maximum | Model-based | Level 3 | Yield | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0149
Maximum | Model-based | Level 3 | Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	$ 2,532.62	$ 2,601
Maximum | Model-based | Level 3 | Adjustment Factor
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	0.50	0.44
Maximum | Model-based | Level 3 | Revenue Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	30.00	30.00
Maximum | Model-based | Level 3 | IR Normal Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest-bearing deposits	0.0139	0.0088
Short-term borrowings and long-term debt	0.1300	0.0088
Maximum | Model-based | Level 3 | IR Normal Volatility | Interest rate contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0142	0.0094
Maximum | Model-based | Level 3 | IR Normal Volatility | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0139	0.0074
Maximum | Model-based | Level 3 | FX Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Short-term borrowings and long-term debt		0.4176
Maximum | Model-based | Level 3 | FX Volatility | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		1.0742
Maximum | Model-based | Level 3 | Cost of Capital
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	0.2000	0.2000
Maximum | Model-based | Level 3 | Equity - Equity Correlation | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.8000	0.9900
Maximum | Model-based | Level 3 | Equity-IR Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Short-term borrowings and long-term debt	0.6000	0.6000
Maximum | Model-based | Level 3 | Equity Forward
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest-bearing deposits	2.0315	1.6583
Short-term borrowings and long-term debt	2.0315
Maximum | Model-based | Level 3 | Equity Forward | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	2.0315	1.6583
Maximum | Model-based | Level 3 | Equity - FX Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Short-term borrowings and long-term debt		0.8000
Maximum | Model-based | Level 3 | Equity - FX Correlation | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.9980	0.8000
Maximum | Model-based | Level 3 | Forward Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases	4.0325	3.3308
Interest-bearing deposits	1.0000
Maximum | Model-based | Level 3 | Forward Price | Commodity and other contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	6.6667	5.9944
Maximum | Model-based | Level 3 | Commodity Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases	0.9186	0.8983
Maximum | Model-based | Level 3 | Commodity Correlation | Commodity and other contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.9186	0.8983
Maximum | Model-based | Level 3 | Equity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
State and municipal, foreign government, corporate and other debt securities		2.9064
Loans and leases	0.8969	0.8544
Interest-bearing deposits	3.1213	2.9064
Short-term borrowings and long-term debt	3.1213	2.9064
Maximum | Model-based | Level 3 | Equity Volatility | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	3.1213	2.9064
Maximum | Model-based | Level 3 | WAL
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketable equity securities | year	1.49	1.73
Mortgage servicing rights | year	8.24	5.86
Maximum | Model-based | Level 3 | Recovery
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketable equity securities	$ 7,148,000,000	$ 7,148,000,000
Maximum | Model-based | Level 3 | Commodity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases	1.7776	1.8830
Maximum | Model-based | Level 3 | Commodity Volatility | Commodity and other contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	1.7776	1.8830
Maximum | Price-based | Level 3 | Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities	$ 107.50	$ 118
State and municipal, foreign government, corporate and other debt securities	972.91	995
Marketable equity securities	11,150.34	73,000
Asset-backed securities	100.00	754
Nontrading derivatives and other financial assets and liabilities measured on a recurring basis (gross)	114.38	2,598
Securities sold, not yet purchased and other trading liabilities	12,100	12,875
Maximum | Price-based | Level 3 | Price | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	$ 102.00	$ 103
Maximum | Price-based | Level 3 | Illiquidity Discount
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		0.3600
Maximum | Price-based | Level 3 | PE Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	18.90
Maximum | Price-based | Level 3 | Credit Correlation | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.7500	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	0.9996
Maximum | Price-based | Level 3 | Recovery Rate | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.4000	0.7500
Maximum | Yield analysis | Level 3 | Yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities	23.51%	23.79%
Asset-backed securities	14.71%	19.35%
Maximum | Comparable analysis | Level 3 | Illiquidity Discount
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	0.3310
Maximum | Comparable analysis | Level 3 | PE Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		29.00
Maximum | Cash flow | Level 3 | Yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights	0.1310	0.1210
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%
Weighted Average | Model-based | Level 3 | Credit Spread | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0508	0.0639
Weighted Average | Model-based | Level 3 | Credit Spread | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0083	0.006883
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	1.29%	0.50%
Securities loaned and sold under agreement to repurchase	0.0249	0.0147
Weighted Average | Model-based | Level 3 | Yield | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0026
Weighted Average | Model-based | Level 3 | Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	$ 2,013.54	$ 2,029
Weighted Average | Model-based | Level 3 | Adjustment Factor
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	0.35	0.34
Weighted Average | Model-based | Level 3 | Revenue Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	19.56	20.48
Weighted Average | Model-based | Level 3 | IR Normal Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest-bearing deposits	0.0062	0.0068
Short-term borrowings and long-term debt	0.0069	0.0060
Weighted Average | Model-based | Level 3 | IR Normal Volatility | Interest rate contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0087	0.0070
Weighted Average | Model-based | Level 3 | IR Normal Volatility | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0047	0.0058
Weighted Average | Model-based | Level 3 | FX Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Short-term borrowings and long-term debt		0.0938
Weighted Average | Model-based | Level 3 | FX Volatility | Foreign exchange contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		0.1121
Weighted Average | Model-based | Level 3 | Cost of Capital
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	0.1760	0.1757
Weighted Average | Model-based | Level 3 | Equity - Equity Correlation | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	(0.1760)	0.8561
Weighted Average | Model-based | Level 3 | Equity-IR Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Short-term borrowings and long-term debt	0.3522	0.3212
Weighted Average | Model-based | Level 3 | Equity Forward
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest-bearing deposits	0.9048	0.8939
Short-term borrowings and long-term debt	0.9048
Weighted Average | Model-based | Level 3 | Equity Forward | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.9056	0.8945
Weighted Average | Model-based | Level 3 | Equity - FX Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Short-term borrowings and long-term debt		(0.1598)
Weighted Average | Model-based | Level 3 | Equity - FX Correlation | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.8581	(0.1600)
Weighted Average | Model-based | Level 3 | Forward Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases	1.0834	1.0697
Interest-bearing deposits	1.0000
Weighted Average | Model-based | Level 3 | Forward Price | Commodity and other contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	1.1653	1.2322
Weighted Average | Model-based | Level 3 | Commodity Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases	0.3331	(0.0711)
Weighted Average | Model-based | Level 3 | Commodity Correlation | Commodity and other contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.3331	(0.0711)
Weighted Average | Model-based | Level 3 | Equity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
State and municipal, foreign government, corporate and other debt securities		0.5394
Loans and leases	0.6007	0.5056
Interest-bearing deposits	0.2165	0.5405
Short-term borrowings and long-term debt	0.2198	0.5321
Weighted Average | Model-based | Level 3 | Equity Volatility | Equity contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.3049	0.4767
Weighted Average | Model-based | Level 3 | WAL
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketable equity securities | year	1.49	1.73
Mortgage servicing rights | year	6.67	5.14
Weighted Average | Model-based | Level 3 | Recovery
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketable equity securities	$ 7,148,000,000	$ 7,148,000,000
Weighted Average | Model-based | Level 3 | Commodity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases	0.2932	0.2685
Weighted Average | Model-based | Level 3 | Commodity Volatility | Commodity and other contracts (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.2932	0.2685
Weighted Average | Price-based | Level 3 | Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities	$ 62.19	$ 79
State and municipal, foreign government, corporate and other debt securities	181.94	193
Marketable equity securities	78.60	6,477
Asset-backed securities	83.09	87
Nontrading derivatives and other financial assets and liabilities measured on a recurring basis (gross)	101.03	591
Securities sold, not yet purchased and other trading liabilities	1,956.88	1,707
Weighted Average | Price-based | Level 3 | Price | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	$ 73.71	$ 80
Weighted Average | Price-based | Level 3 | Illiquidity Discount
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		0.2643
Weighted Average | Price-based | Level 3 | PE Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	13.12
Weighted Average | Price-based | Level 3 | Credit Correlation | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.4371	0.5457
Weighted Average | Price-based | Level 3 | Upfront Points | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.5364	0.5937
Weighted Average | Price-based | Level 3 | Recovery Rate | Credit derivatives (gross)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.3782	0.4472
Weighted Average | Yield analysis | Level 3 | Yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities	8.74%	7.25%
Asset-backed securities	7.67%	8.18%
Weighted Average | Comparable analysis | Level 3 | Illiquidity Discount
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	0.2705
Weighted Average | Comparable analysis | Level 3 | PE Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		15.42
Weighted Average | Cash flow | Level 3 | Yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights	0.0525	0.0451