Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Derivative Instruments and Other Financial Instruments Used For Hedging (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Derivative Instruments and Other Financial Instruments
Derivative Notional Amount	$ 155,869		$ 155,869		$ 177,428
Gross Amounts of Recognized Assets/Liabilities	1,473		1,473		1,626
Gross Amounts of Recognized Assets/Liabilities	1,452		1,452		1,684
Interest rate derivative contracts \| Not designated as hedging instruments
Derivative Instruments and Other Financial Instruments
Derivative Notional Amount	132,628		132,628		149,229
Gross Amounts of Recognized Assets/Liabilities	973		973		1,074
Gross Amounts of Recognized Assets/Liabilities	878		878		988
Interest rate derivative contracts \| Cash Flow Hedges \| Designated as Hedging Instrument
Derivative Instruments and Other Financial Instruments
Derivative Notional Amount	11,190		11,190		15,459
Gross Amounts of Recognized Assets/Liabilities	4		4		19
Gross Amounts of Recognized Assets/Liabilities	183		183		199
Interest rate derivative contracts \| Fair value hedges \| Designated as Hedging Instrument
Derivative Instruments and Other Financial Instruments
Derivative Notional Amount	500		500		500
Gross Amounts of Recognized Assets/Liabilities	2		2		3
Gross Amounts of Recognized Assets/Liabilities	0		0		0
Commodity derivative contracts \| Not designated as hedging instruments
Derivative Instruments and Other Financial Instruments
Derivative Notional Amount	2,088		2,088		2,825
Gross Amounts of Recognized Assets/Liabilities	101		101		145
Gross Amounts of Recognized Assets/Liabilities	76		76		112
Foreign exchange derivative contracts \| Not designated as hedging instruments
Derivative Instruments and Other Financial Instruments
Derivative Notional Amount	6,501		6,501		5,981
Gross Amounts of Recognized Assets/Liabilities	221		221		217
Gross Amounts of Recognized Assets/Liabilities	130		130		131
Equity Derivative contracts \| Not designated as hedging instruments
Derivative Instruments and Other Financial Instruments
Derivative Notional Amount	1,816		1,816		2,385
Gross Amounts of Recognized Assets/Liabilities	168		168		165
Gross Amounts of Recognized Assets/Liabilities	168		168		164
Other derivative contracts \| Not designated as hedging instruments
Derivative Instruments and Other Financial Instruments
Derivative Notional Amount	84		84		4
Gross Amounts of Recognized Assets/Liabilities	0		0
Gross Amounts of Recognized Assets/Liabilities	0		0
Trading derivatives \| Not designated as hedging instruments
Derivative Instruments and Other Financial Instruments
Derivative Notional Amount	143,117		143,117		160,424
Gross Amounts of Recognized Assets/Liabilities	1,463		1,463		1,601
Gross Amounts of Recognized Assets/Liabilities	1,252		1,252		1,395
Other Risk Management \| Not designated as hedging instruments
Derivative Instruments and Other Financial Instruments
Derivative Notional Amount	1,062		1,062		1,045
Gross Amounts of Recognized Assets/Liabilities	4		4		3
Gross Amounts of Recognized Assets/Liabilities	17		17		$ 90
Net gains (losses) on derivatives included in other noninterest income	$ (10)	$ (12)	$ (6)	$ (14)