FAIR VALUE MEASUREMENT - Valuation Techniques and Inputs for Level 3 Fair Value Measurements (Details)	Jun. 30, 2020 USD ($) year	Dec. 31, 2019 USD ($) year
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketable equity securities	$ 1,079,000,000	$ 1,162,000,000
Model-based | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities borrowed and purchased under agreements to resell	326,000,000	303,000,000
Mortgage-backed securities		22,000,000
State and municipal, foreign government, corporate and other debt securities	923,000,000	880,000,000
Marketable equity securities	32,000,000	30,000,000
Non-marketable equities	68,000,000
Loans and leases	917,000,000	378,000,000
Mortgage servicing rights	71,000,000	77,000,000
Interest-bearing deposits	237,000,000	215,000,000
Securities loaned and sold under agreement to repurchase	625,000,000	757,000,000
Securities sold, not yet purchased	45,000,000
Short-term borrowings and long-term debt	21,761,000,000	17,182,000,000
Price-based | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities	473,000,000	196,000,000
State and municipal, foreign government, corporate and other debt securities	1,346,000,000	677,000,000
Marketable equity securities	60,000,000	70,000,000
Asset-backed securities	1,273,000,000	812,000,000
Non-marketable equities	74,000,000	97,000,000
Securities sold, not yet purchased	59,000,000	46,000,000
Yield analysis | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities	280,000,000
Asset-backed securities	518,000,000	368,000,000
Comparable analysis | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	188,000,000	316,000,000
Cash flow | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights	$ 274,000,000	$ 418,000,000
Minimum | Model-based | Level 3 | Interest Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities borrowed and purchased under agreements to resell	0.13%	1.59%
Securities loaned and sold under agreement to repurchase	0.0013	0.0159
Securities sold, not yet purchased	0.0957
Minimum | Model-based | Level 3 | Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
State and municipal, foreign government, corporate and other debt securities		$ 0
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
Loans and leases	0.0047	0.0009
Minimum | Model-based | Level 3 | Appraised Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	$ 865,000
Minimum | Model-based | Level 3 | Revenue Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	1.00
Minimum | Model-based | Level 3 | Discount to Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	0
Minimum | Model-based | Level 3 | Mean Reversion
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest-bearing deposits		0.0100
Short-term borrowings and long-term debt		0.0100
Minimum | Model-based | Level 3 | IR Normal Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest-bearing deposits	0.0020
Short-term borrowings and long-term debt	0.0016	0.0009
Minimum | Model-based | Level 3 | IR Lognormal Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities sold, not yet purchased	0.5216
Minimum | Model-based | Level 3 | Forward Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest-bearing deposits	0.9640	0.9759
Short-term borrowings and long-term debt	0.3619	0.3762
Minimum | Model-based | Level 3 | Equity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases	0.2367	0.3200
Minimum | Model-based | Level 3 | WAL
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketable equity securities | year		1.48
Derivative assets | year		1.48
Mortgage servicing rights | year	2.89	4.07
Minimum | Model-based | Level 3 | Recovery
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketable equity securities	$ 5,450,000,000	$ 5,450,000,000
Marketable equity securities | year	0.99
Minimum | Model-based | Level 3 | Equity-IR Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Short-term borrowings and long-term debt		0.1500
Minimum | Model-based | Level 3 | PE Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	10.00
Minimum | Model-based | Level 3 | Price to Book Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	0.60
Minimum | Price-based | Level 3 | Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities	$ 25.35	$ 36
State and municipal, foreign government, corporate and other debt securities	0
Marketable equity securities	0.14	0
Asset-backed securities	1.87	4
Non-marketable equities		3
Securities sold, not yet purchased	0.14	$ 0
Minimum | Price-based | Level 3 | Credit Spread
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
State and municipal, foreign government, corporate and other debt securities		0.0035
Minimum | Price-based | Level 3 | Appraised Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		$ 397,000
Minimum | Price-based | Level 3 | Illiquidity Discount
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	$ 10.00
Minimum | Price-based | Level 3 | Discount to Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		0
Minimum | Price-based | Level 3 | PE Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		14.70
Minimum | Price-based | Level 3 | Price to Book Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		1.50
Minimum | Yield analysis | Level 3 | Yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities		1.72%
Asset-backed securities	2.94%	0.61%
Minimum | Comparable analysis | Level 3 | Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	$ 12.36
Minimum | Comparable analysis | Level 3 | EBITDA
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		7.00
Minimum | Cash flow | Level 3 | Yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights	0	0.0178
Maximum | Model-based | Level 3 | Interest Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities borrowed and purchased under agreements to resell	1.66%	3.67%
Securities loaned and sold under agreement to repurchase	0.0166	0.0238
Securities sold, not yet purchased	0.2768
Maximum | Model-based | Level 3 | Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
State and municipal, foreign government, corporate and other debt securities		$ 1,238
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	0.0349
Loans and leases	0.0047	0.0052
Maximum | Model-based | Level 3 | Appraised Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	$ 27,608,000
Maximum | Model-based | Level 3 | Revenue Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	10.00
Maximum | Model-based | Level 3 | Discount to Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	0
Maximum | Model-based | Level 3 | Mean Reversion
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest-bearing deposits		0.2000
Short-term borrowings and long-term debt		0.2000
Maximum | Model-based | Level 3 | IR Normal Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest-bearing deposits	0.0084
Short-term borrowings and long-term debt	0.0084	0.0066
Maximum | Model-based | Level 3 | IR Lognormal Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities sold, not yet purchased	1.0754
Maximum | Model-based | Level 3 | Forward Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest-bearing deposits	1.0326	1.1106
Short-term borrowings and long-term debt	3.5652	3.6257
Maximum | Model-based | Level 3 | Equity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases	0.8479	0.3200
Maximum | Model-based | Level 3 | WAL
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketable equity securities | year		1.48
Derivative assets | year		1.48
Mortgage servicing rights | year	5.26	8.13
Maximum | Model-based | Level 3 | Recovery
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketable equity securities	$ 5,450,000,000	$ 5,450,000,000
Marketable equity securities | year	0.99
Maximum | Model-based | Level 3 | Equity-IR Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Short-term borrowings and long-term debt		0.4400
Maximum | Model-based | Level 3 | PE Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	26.00
Maximum | Model-based | Level 3 | Price to Book Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	1.60
Maximum | Price-based | Level 3 | Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities	$ 119.20	$ 505
State and municipal, foreign government, corporate and other debt securities	120.46
Marketable equity securities	23,250	38,500
Asset-backed securities	100.00	103
Non-marketable equities		2,019
Securities sold, not yet purchased	865.86	$ 866
Maximum | Price-based | Level 3 | Credit Spread
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
State and municipal, foreign government, corporate and other debt securities		0.0295
Maximum | Price-based | Level 3 | Appraised Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		$ 33,246,000
Maximum | Price-based | Level 3 | Illiquidity Discount
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	$ 45.00
Maximum | Price-based | Level 3 | Discount to Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		0.1000
Maximum | Price-based | Level 3 | PE Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		28.70
Maximum | Price-based | Level 3 | Price to Book Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		3.00
Maximum | Yield analysis | Level 3 | Yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities		18.44%
Asset-backed securities	16.68%	23.38%
Maximum | Comparable analysis | Level 3 | Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	$ 1,871
Maximum | Comparable analysis | Level 3 | EBITDA
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		17.95
Maximum | Cash flow | Level 3 | Yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights	0.1428	0.1200
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	0.42%	2.72%
Securities loaned and sold under agreement to repurchase	0.0078	0.0195
Securities sold, not yet purchased	0.1198
Weighted Average | Model-based | Level 3 | Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
State and municipal, foreign government, corporate and other debt securities		$ 90
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	0.0222
Loans and leases	0.0047	0.0048
Weighted Average | Model-based | Level 3 | Appraised Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	$ 17,324,000
Weighted Average | Model-based | Level 3 | Revenue Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	4.00
Weighted Average | Model-based | Level 3 | Discount to Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	0
Weighted Average | Model-based | Level 3 | Mean Reversion
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest-bearing deposits		0.1050
Short-term borrowings and long-term debt		0.1050
Weighted Average | Model-based | Level 3 | IR Normal Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest-bearing deposits	0.0059
Short-term borrowings and long-term debt	0.0056	0.0046
Weighted Average | Model-based | Level 3 | IR Lognormal Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities sold, not yet purchased	0.8692
Weighted Average | Model-based | Level 3 | Forward Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest-bearing deposits	0.9976	1.0296
Short-term borrowings and long-term debt	0.9395	0.9752
Weighted Average | Model-based | Level 3 | Equity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans and leases	0.6408	0.3200
Weighted Average | Model-based | Level 3 | WAL
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketable equity securities | year		1.48
Derivative assets | year		1.48
Mortgage servicing rights | year	4.00	6.61
Weighted Average | Model-based | Level 3 | Recovery
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketable equity securities	$ 5,450,000,000	$ 5,450,000,000
Marketable equity securities | year	0.99
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		0.3266
Weighted Average | Model-based | Level 3 | PE Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	17.00
Weighted Average | Model-based | Level 3 | Price to Book Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	0.93
Weighted Average | Price-based | Level 3 | Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities	$ 87.92	$ 97
State and municipal, foreign government, corporate and other debt securities	83.83
Marketable equity securities	1,367	2,979
Asset-backed securities	59.54	60
Non-marketable equities		1,020
Securities sold, not yet purchased	85.74	$ 96
Weighted Average | Price-based | Level 3 | Credit Spread
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
State and municipal, foreign government, corporate and other debt securities		0.0209
Weighted Average | Price-based | Level 3 | Appraised Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		$ 8,446,000
Weighted Average | Price-based | Level 3 | Illiquidity Discount
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	$ 24.93
Weighted Average | Price-based | Level 3 | Discount to Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		0.0232
Weighted Average | Price-based | Level 3 | PE Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		20.54
Weighted Average | Price-based | Level 3 | Price to Book Ratio
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		1.88
Weighted Average | Yield analysis | Level 3 | Yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage-backed securities		8.29%
Asset-backed securities	8.27%	8.88%
Weighted Average | Comparable analysis | Level 3 | Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities	$ 1,039
Weighted Average | Comparable analysis | Level 3 | EBITDA
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Non-marketable equities		10.34
Weighted Average | Cash flow | Level 3 | Yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights	0.0285	0.0949
Interest rate contracts | Model-based | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	$ 5,408,000,000	$ 2,196,000,000
Interest rate contracts | Minimum | Model-based | Level 3 | Mean Reversion
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		0.0100
Interest rate contracts | Minimum | Model-based | Level 3 | Inflation Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0025	0.0021
Interest rate contracts | Minimum | Model-based | Level 3 | IR Normal Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0016	0.0009
Interest rate contracts | Maximum | Model-based | Level 3 | Mean Reversion
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		0.2000
Interest rate contracts | Maximum | Model-based | Level 3 | Inflation Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0283	0.0274
Interest rate contracts | Maximum | Model-based | Level 3 | IR Normal Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0084	0.0066
Interest rate contracts | Weighted Average | Model-based | Level 3 | Mean Reversion
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		0.1050
Interest rate contracts | Weighted Average | Model-based | Level 3 | Inflation Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0078	0.0079
Interest rate contracts | Weighted Average | Model-based | Level 3 | IR Normal Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0057	0.0053
Foreign exchange contracts | Model-based | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	$ 1,115,000,000	$ 1,099,000,000
Foreign exchange contracts | Minimum | Model-based | Level 3 | Interest Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0075	0.0272
Foreign exchange contracts | Minimum | Model-based | Level 3 | Credit Spread
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0060
Foreign exchange contracts | Minimum | Model-based | Level 3 | IR Normal Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0016	0.0027
Foreign exchange contracts | Minimum | Model-based | Level 3 | FX Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		0.3739
Derivative assets	$ 4.87
Foreign exchange contracts | Minimum | Model-based | Level 3 | FX Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0030	0.0127
Foreign exchange contracts | Minimum | Model-based | Level 3 | IR-IR Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	(0.2171)	(0.5100)
Foreign exchange contracts | Minimum | Model-based | Level 3 | IR-FX Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.4000	0.4000
Foreign exchange contracts | Maximum | Model-based | Level 3 | Interest Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.7138	0.5614
Foreign exchange contracts | Maximum | Model-based | Level 3 | Credit Spread
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0699
Foreign exchange contracts | Maximum | Model-based | Level 3 | IR Normal Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0084	0.0066
Foreign exchange contracts | Maximum | Model-based | Level 3 | FX Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		5.8684
Derivative assets	$ 86.03
Foreign exchange contracts | Maximum | Model-based | Level 3 | FX Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.1528	0.1216
Foreign exchange contracts | Maximum | Model-based | Level 3 | IR-IR Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.4000	0.4000
Foreign exchange contracts | Maximum | Model-based | Level 3 | IR-FX Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.6000	0.6000
Foreign exchange contracts | Weighted Average | Model-based | Level 3 | Interest Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.1315	0.1311
Foreign exchange contracts | Weighted Average | Model-based | Level 3 | Credit Spread
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0455
Foreign exchange contracts | Weighted Average | Model-based | Level 3 | IR Normal Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0061	0.0058
Foreign exchange contracts | Weighted Average | Model-based | Level 3 | FX Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		0.8064
Derivative assets	$ 43.49
Foreign exchange contracts | Weighted Average | Model-based | Level 3 | FX Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0671	0.0917
Foreign exchange contracts | Weighted Average | Model-based | Level 3 | IR-IR Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.3511	0.3200
Foreign exchange contracts | Weighted Average | Model-based | Level 3 | IR-FX Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.5000	0.5000
Equity contracts | Model-based | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	$ 3,402,000,000	$ 2,076,000,000
Equity contracts | Minimum | Model-based | Level 3 | Forward Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.6319	0.6260
Equity contracts | Minimum | Model-based | Level 3 | Equity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0385	0.0316
Equity contracts | Minimum | Model-based | Level 3 | Recovery
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		5,450,000,000
Equity contracts | Maximum | Model-based | Level 3 | Forward Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	1.0616	1.1269
Equity contracts | Maximum | Model-based | Level 3 | Equity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.7224	0.5280
Equity contracts | Maximum | Model-based | Level 3 | Recovery
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		5,450,000,000
Equity contracts | Weighted Average | Model-based | Level 3 | Forward Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.9195	0.9846
Equity contracts | Weighted Average | Model-based | Level 3 | Equity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.3369	0.2843
Equity contracts | Weighted Average | Model-based | Level 3 | Recovery
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		5,450,000,000
Commodity contracts | Model-based | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	$ 2,250,000,000	$ 1,487,000,000
Commodity contracts | Minimum | Model-based | Level 3 | Forward Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.3619	0.3762
Commodity contracts | Minimum | Model-based | Level 3 | Commodity Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	(0.4072)	(0.3965)
Commodity contracts | Minimum | Model-based | Level 3 | Commodity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	(0.0419)	0.0525
Commodity contracts | Maximum | Model-based | Level 3 | Forward Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	3.5652	3.6257
Commodity contracts | Maximum | Model-based | Level 3 | Commodity Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.9033	0.8781
Commodity contracts | Maximum | Model-based | Level 3 | Commodity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.9896	0.9363
Commodity contracts | Weighted Average | Model-based | Level 3 | Forward Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.9968	1.1932
Commodity contracts | Weighted Average | Model-based | Level 3 | Commodity Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.6573	0.4180
Commodity contracts | Weighted Average | Model-based | Level 3 | Commodity Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0833	0.2355
Credit derivatives | Model-based | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	$ 2,185,000,000	$ 613,000,000
Credit derivatives | Price-based | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	$ 483,000,000	$ 341,000,000
Credit derivatives | Minimum | Model-based | Level 3 | Credit Spread
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0013	0.0008
Credit derivatives | Minimum | Price-based | Level 3 | Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		$ 12
Credit derivatives | Minimum | Price-based | Level 3 | Credit Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.2000	0.2500
Credit derivatives | Minimum | Price-based | Level 3 | Upfront Points
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0250	0.0259
Credit derivatives | Minimum | Price-based | Level 3 | Recovery Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.1000	0.2000
Credit derivatives | Maximum | Model-based | Level 3 | Credit Spread
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0608	0.0283
Credit derivatives | Maximum | Price-based | Level 3 | Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		$ 100
Credit derivatives | Maximum | Price-based | Level 3 | Credit Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.8500	0.8700
Credit derivatives | Maximum | Price-based | Level 3 | Upfront Points
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	1.0000	0.9994
Credit derivatives | Maximum | Price-based | Level 3 | Recovery Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.6500	0.6500
Credit derivatives | Weighted Average | Model-based | Level 3 | Credit Spread
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.0117	0.0080
Credit derivatives | Weighted Average | Price-based | Level 3 | Price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets		$ 87
Credit derivatives | Weighted Average | Price-based | Level 3 | Credit Correlation
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.4017	0.4857
Credit derivatives | Weighted Average | Price-based | Level 3 | Upfront Points
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.5393	0.5941
Credit derivatives | Weighted Average | Price-based | Level 3 | Recovery Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative assets	0.3887	0.4800