Derivative Positions (Detail) - USD ($) $ in Millions		Jun. 30, 2015		Dec. 31, 2014
Derivative Asset, Fair Value, Gross Asset		$ 5,239		$ 5,839
Derivative liability positions, fair value		5,119		5,577
Derivative Asset, Collateral, Obligation to Return Cash, Offset		(3,620)		(4,083)
Derivative Liability, Collateral, Right to Reclaim Cash, Offset		(3,620)		(4,083)
Derivative Assets	[1]	(1,208)		(1,307)
Derivative Liabilities	[2]	400		462
Trading Liabilities [Member]
Derivative Liability, Fair Value of Collateral		(1,099)		(1,032)
Derivative Liabilities		400		462
Derivative Financial Instruments, Assets
Derivative Asset, Notional Amount		134,231		118,139
Derivative Asset, Fair Value, Gross Asset		5,239		5,839
Derivative Assets		(1,208)		(1,307)
Derivative Financial Instruments, Assets | Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Contract [Member] | Floating Rate Loans [Member] | Trading Securities [Member]
Derivative Asset, Notional Amount		17,600	[3]	18,150	[4]
Derivative Asset, Fair Value, Gross Asset		175	[3]	208	[4]
Derivative Financial Instruments, Assets | Designated as Hedging Instrument | Fair Value Hedging | Interest Rate Contract [Member] | Trading Securities [Member]
Derivative Asset, Notional Amount		2,805	[5]	2,730	[6]
Derivative Asset, Fair Value, Gross Asset		28	[5]	30	[6]
Derivative Financial Instruments, Assets | Designated as Hedging Instrument | Fair Value Hedging | Interest Rate Contract [Member] | Fixed Rate Debt | Trading Securities [Member]
Derivative Asset, Notional Amount		2,775	[5]	2,700	[6]
Derivative Asset, Fair Value, Gross Asset		28	[5]	30	[6]
Derivative Financial Instruments, Assets | Designated as Hedging Instrument | Fair Value Hedging | Interest Rate Contract [Member] | Brokered Deposits [Member] | Trading Securities [Member]
Derivative Asset, Notional Amount		30	[5]	30	[6]
Derivative Asset, Fair Value, Gross Asset		0		0
Derivative Financial Instruments, Assets | Not Designated as Hedging Instrument [Member]
Derivative Asset, Notional Amount		113,826	[7]	97,259
Derivative Asset, Fair Value, Gross Asset		5,036	[7]	5,601
Derivative Financial Instruments, Assets | Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Mortgage Servicing Rights [Member] | Trading Securities [Member]
Derivative Asset, Notional Amount		7,133	[7]	5,172	[8]
Derivative Asset, Fair Value, Gross Asset		161	[7]	163	[8]
Derivative Financial Instruments, Assets | Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Loans [Member] | Trading Securities [Member]
Derivative Asset, Notional Amount		5,100	[7],[9]	1,840	[8],[10]
Derivative Asset, Fair Value, Gross Asset		33	[7],[9]	4	[8],[10]
Derivative Financial Instruments, Assets | Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Trading Activity | Trading Securities [Member]
Derivative Asset, Notional Amount		69,746	[7],[11]	61,049	[8],[12]
Derivative Asset, Fair Value, Gross Asset		2,163	[7],[11]	2,405	[8],[12]
Derivative Financial Instruments, Assets | Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract | Trading Activity | Trading Securities [Member]
Derivative Asset, Notional Amount		3,308	[7]	2,429	[8]
Derivative Asset, Fair Value, Gross Asset		132	[7]	104	[8]
Derivative Financial Instruments, Assets | Not Designated as Hedging Instrument [Member] | Credit Risk Contract [Member] | Loans [Member] | Other Assets [Member]
Derivative Asset, Notional Amount		0		0
Derivative Asset, Fair Value, Gross Asset		0		0
Derivative Financial Instruments, Assets | Not Designated as Hedging Instrument [Member] | Credit Risk Contract [Member] | Trading Activity | Trading Securities [Member]
Derivative Asset, Notional Amount		2,291	[7],[13]	2,282	[8],[14]
Derivative Asset, Fair Value, Gross Asset		17	[7],[13]	20	[8],[14]
Derivative Financial Instruments, Assets | Not Designated as Hedging Instrument [Member] | Equity Contract [Member] | Trading Activity | Trading Securities [Member]
Derivative Asset, Notional Amount		23,076	[7],[11]	21,875	[8],[12]
Derivative Asset, Fair Value, Gross Asset		2,438	[7],[11]	2,809	[8],[12]
Derivative Financial Instruments, Assets | Not Designated as Hedging Instrument [Member] | Other Contract | Loans [Member] | Trading Securities [Member]
Derivative Asset, Notional Amount		2,706	[7],[15]	2,231	[8],[16]
Derivative Asset, Fair Value, Gross Asset		24	[7],[15]	25	[8],[16]
Derivative Financial Instruments, Assets | Not Designated as Hedging Instrument [Member] | Other Contract | Trading Activity | Trading Securities [Member]
Derivative Asset, Notional Amount		466	[7]	381	[8]
Derivative Asset, Fair Value, Gross Asset		68	[7]	71	[8]
Derivative Financial Instruments, Liabilities [Member]
Derivative Liability, Notional Amount		123,816		114,144
Derivative liability positions, fair value		5,119		5,577
Derivative Liabilities		400		462
Derivative Financial Instruments, Liabilities [Member] | Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Contract [Member] | Floating Rate Loans [Member] | Trading Liabilities [Member]
Derivative Liability, Notional Amount		850	[3]	2,850	[4]
Derivative liability positions, fair value		2	[3]	8	[4]
Derivative Financial Instruments, Liabilities [Member] | Designated as Hedging Instrument | Fair Value Hedging | Interest Rate Contract [Member] | Trading Liabilities [Member]
Derivative Liability, Notional Amount		600	[5]	2,600	[6]
Derivative liability positions, fair value		0		1	[6]
Derivative Financial Instruments, Liabilities [Member] | Designated as Hedging Instrument | Fair Value Hedging | Interest Rate Contract [Member] | Fixed Rate Debt | Trading Liabilities [Member]
Derivative Liability, Notional Amount		600	[5]	2,600	[6]
Derivative liability positions, fair value		0		1	[6]
Derivative Financial Instruments, Liabilities [Member] | Designated as Hedging Instrument | Fair Value Hedging | Interest Rate Contract [Member] | Brokered Deposits [Member] | Trading Liabilities [Member]
Derivative Liability, Notional Amount		0		0
Derivative liability positions, fair value		0		0
Derivative Financial Instruments, Liabilities [Member] | Not Designated as Hedging Instrument [Member]
Derivative Liability, Notional Amount		122,366	[7]	108,694
Derivative liability positions, fair value		5,117	[7]	5,568
Derivative Financial Instruments, Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Mortgage Servicing Rights [Member] | Trading Liabilities [Member]
Derivative Liability, Notional Amount		16,340	[7]	8,807	[8]
Derivative liability positions, fair value		129	[7]	30	[8]
Derivative Financial Instruments, Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Loans [Member] | Trading Liabilities [Member]
Derivative Liability, Notional Amount		3,474	[7],[9]	4,923	[8],[10]
Derivative liability positions, fair value		8	[7],[9]	23	[8],[10]
Derivative Financial Instruments, Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Trading Activity | Trading Liabilities [Member]
Derivative Liability, Notional Amount		68,062	[7],[11]	61,065	[8],[12]
Derivative liability positions, fair value		1,975	[7],[11]	2,225	[8],[12]
Derivative Financial Instruments, Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract | Trading Activity | Trading Liabilities [Member]
Derivative Liability, Notional Amount		2,707	[7]	2,414	[8]
Derivative liability positions, fair value		126	[7]	100	[8]
Derivative Financial Instruments, Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Credit Risk Contract [Member] | Loans [Member] | Other Liabilities [Member]
Derivative Liability, Notional Amount		215	[7]	392	[8]
Derivative liability positions, fair value		3	[7]	5	[8]
Derivative Financial Instruments, Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Credit Risk Contract [Member] | Trading Activity | Trading Liabilities [Member]
Derivative Liability, Notional Amount		2,571	[7],[13]	2,452	[8],[14]
Derivative liability positions, fair value		18	[7],[13]	20	[8],[14]
Derivative Financial Instruments, Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Equity Contract [Member] | Trading Activity | Trading Liabilities [Member]
Derivative Liability, Notional Amount		27,776	[7],[11]	28,128	[8],[12]
Derivative liability positions, fair value		2,781	[7],[11]	3,090	[8],[12]
Derivative Financial Instruments, Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Other Contract | Loans [Member] | Trading Liabilities [Member]
Derivative Liability, Notional Amount		759	[7],[15]	139	[8],[16]
Derivative liability positions, fair value		10	[7],[15]	5	[8],[16]
Derivative Financial Instruments, Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Other Contract | Trading Activity | Trading Liabilities [Member]
Derivative Liability, Notional Amount		462	[7]	374	[8]
Derivative liability positions, fair value		67	[7]	70	[8]
Trading Securities [Member]
Derivative Asset, Fair Value of Collateral		(411)		(449)
Derivative Assets		$ (1,200)		$ (1,300)

[1] At June 30, 2015, $1.2 billion, net of $411 million offsetting cash collateral, is recognized in trading assets and derivative instruments within the Company's Consolidated Balance Sheets. At December 31, 2014, $1.3 billion, net of $449 million offsetting cash collateral, is recognized in trading assets and derivative instruments within the Company's Consolidated Balance Sheets.

[2] At June 30, 2015, $400 million, net of $1.1 billion offsetting cash collateral, is recognized in trading liabilities and derivative instruments within the Company's Consolidated Balance Sheets. At December 31, 2014, $462 million, net of $1.0 billion offsetting cash collateral, is recognized in trading liabilities and derivative instruments within the Company's Consolidated Balance Sheets.

[3] See “Cash Flow Hedges” in this Note for further discussion.

[4] See “Cash Flow Hedges” in this Note for further discussion.

[5] See “Fair Value Hedges” in this Note for further discussion.

[6] See “Fair Value Hedges” in this Note for further discussion.

[7] See “Economic Hedging and Trading Activities” in this Note for further discussion.

[8] See “Economic Hedging and Trading Activities” in this Note for further discussion.

[9] Amount includes $654 million of notional amounts related to interest rate futures. These futures contracts settle in cash daily, one day in arrears. The derivative asset or liability associated with the one day lag is included in the fair value column of this table.

[10] Amount includes $791 million of notional amounts related to interest rate futures. These futures contracts settle in cash daily, one day in arrears. The derivative asset or liability associated with the one day lag is included in the fair value column of this table.

[11] Amounts include $14.2 billion and $1.2 billion of notional amounts related to interest rate futures and equity futures, respectively. These futures contracts settle in cash daily, one day in arrears. The derivative asset or liability associated with the one day lag is included in the fair value column of this table. Amounts also include notional amounts related to interest rate swaps hedging fixed rate debt.

[12] Amounts include $10.3 billion and $563 million of notional amounts related to interest rate futures and equity futures, respectively. These futures contracts settle in cash daily, one day in arrears. The derivative asset or liability associated with the one day lag is included in the fair value column of this table. Amounts also include notional amounts related to interest rate swaps hedging fixed rate debt.

[13] Asset and liability amounts both include $6 million of notional amounts from purchased and written credit risk participation agreements, respectively, whose notional is calculated as the notional of the derivative participated adjusted by the relevant RWA conversion factor.

[14] Asset and liability amounts both include $4 million of notional amounts from purchased and written interest rate swap risk participation agreements, respectively, whose notional is calculated as the notional of the interest rate swap participated adjusted by the relevant RWA conversion factor.

[15] Includes $49 million notional amount that is based on the number of Visa Class B shares, 3.2 million, the conversion ratio from Class B shares to Class A shares, and the Class A share price at the derivative inception date of May 28, 2009. This derivative was established upon the sale of Class B shares in the second quarter of 2009. See Note 12, “Guarantees” for additional information.

[16] Includes $49 million notional amount that is based on the number of Visa Class B shares, 3.2 million, the conversion ratio from Class B shares to Class A shares, and the Class A share price at the derivative inception date of May 28, 2009. This derivative was established upon the sale of Class B shares in the second quarter of 2009. See Note 12, “Guarantees” for additional information.