Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended			12 Months Ended
	Sep. 30, 2014		Mar. 31, 2014	Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	$ 5,782				$ 5,782			$ 5,040
Derivative Assets	1,237	[1]			1,237	[1]		1,384	[1]
Available-for-sale Securities	26,162				26,162			22,542
Loans Held-for-sale, Fair Value Disclosure	1,560				1,560			1,378
Loans Receivable, Fair Value Disclosure	284				284			302
Servicing Asset at Fair Value, Amount	1,305				1,305			1,300
Trading Liabilities, Fair Value Disclosure	1,231				1,231			1,181
Derivative Liabilities	360	[2]			360	[2]		525	[2]
Deposits, Fair Value Disclosure	87				87			764
Long-term Debt, Fair Value	1,293				1,293			1,556
Other Liabilities, Fair Value Disclosure	24	[3]			24	[3]		29	[4],[5]
Netting [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	(4,103)	[6]			(4,103)	[6]		(4,741)	[6]
Trading Liabilities, Fair Value Disclosure	(4,667)	[6]			(4,667)	[6]		(5,148)	[6]
Other Liabilities, Fair Value Disclosure	0	[3],[6]			0	[3],[6]		0	[4],[5],[6]
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	26,162				26,162			22,542
Loans Held-for-sale, Fair Value Disclosure								1,378
Loans Receivable, Fair Value Disclosure	284				284			302
Servicing Asset at Fair Value, Amount	1,305				1,305			1,300
Deposits, Fair Value Disclosure	87				87			764
Long-term Debt, Fair Value	1,293				1,293			1,556
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	1,109				1,109			1,156
Available-for-sale Securities	1,120				1,120			1,396
Loans Held-for-sale, Fair Value Disclosure								0
Loans Receivable, Fair Value Disclosure	0				0			0
Servicing Asset at Fair Value, Amount	0				0			0
Trading Liabilities, Fair Value Disclosure	1,112				1,112			979
Deposits, Fair Value Disclosure	0				0			0
Long-term Debt, Fair Value	0				0			0
Other Liabilities, Fair Value Disclosure	0				0			0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	8,759				8,759			8,553
Available-for-sale Securities	24,042				24,042			20,193
Loans Held-for-sale, Fair Value Disclosure								1,375
Loans Receivable, Fair Value Disclosure	0				0			0
Servicing Asset at Fair Value, Amount	0				0			0
Trading Liabilities, Fair Value Disclosure	4,774				4,774			5,346
Deposits, Fair Value Disclosure	87				87			764
Long-term Debt, Fair Value	1,293				1,293			1,556
Other Liabilities, Fair Value Disclosure	0	[3]			0	[3]		0	[4],[5]
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	17				17			72
Available-for-sale Securities	1,000				1,000			953
Loans Held-for-sale, Fair Value Disclosure								3
Loans Receivable, Fair Value Disclosure	284				284			302
Servicing Asset at Fair Value, Amount	1,305				1,305			1,300
Trading Liabilities, Fair Value Disclosure	12				12			4
Deposits, Fair Value Disclosure	0				0			0
Long-term Debt, Fair Value	0				0			0
Other Liabilities, Fair Value Disclosure	24	[3]			24	[3]		29	[4],[5]
Other Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liabilities Transfers To From Other Line Items In The Balance Sheet	0				(3)		0
Derivative Financial Instruments, Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liabilities Transfers To From Other Line Items In The Balance Sheet				0
Investment in Federal Home Loan Bank Stock [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	421				421			336
Interest Rate Lock Commitments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3	(64)			(50)	(181)		159
Trading Loans [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	2,188				2,188			1,888
Trading Loans [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	0				0			0
Trading Loans [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	2,188				2,188			1,888
Trading Loans [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	0				0			0
Equity Securities | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	59				59			109
Available-for-sale Securities	939	[7]			939	[7]		842
Trading Liabilities, Fair Value Disclosure								5
Equity Securities | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	59				59			109
Available-for-sale Securities	109	[7]			109	[7]		103
Trading Liabilities, Fair Value Disclosure								5
Equity Securities | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	0				0			0
Available-for-sale Securities	0				0			0
Trading Liabilities, Fair Value Disclosure								0
Equity Securities | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	0				0			0
Available-for-sale Securities	830	[7]			830	[7]		739
Trading Liabilities, Fair Value Disclosure								0
Derivative Financial Instruments, Assets | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	798				798			828
Derivative Financial Instruments, Assets | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	4,525				4,525			5,285
Derivative Financial Instruments, Assets | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	17				17			12
Commercial Paper [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	261				261			29
Commercial Paper [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	0				0			0
Commercial Paper [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	261				261			29
Commercial Paper [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	0				0			0
Other Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	790				790			534
Available-for-sale Securities	41				41			42
Trading Liabilities, Fair Value Disclosure	250				250			179
Other Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	0				0			0
Available-for-sale Securities	0				0			0
Trading Liabilities, Fair Value Disclosure	0				0			0
Other Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	790				790			534
Available-for-sale Securities	36				36			37
Trading Liabilities, Fair Value Disclosure	250				250			179
Other Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	0				0			0
Available-for-sale Securities	5				5			5
Trading Liabilities, Fair Value Disclosure	0				0			0
Asset-backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets								6
Available-for-sale Securities	21				21			79
Asset-backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets								0
Available-for-sale Securities	0				0			0
Asset-backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets								0
Available-for-sale Securities	0				0			58
Asset-backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets								6
Available-for-sale Securities	21				21			21
Collateralized Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	5				5			57
Collateralized Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	0				0			0
Collateralized Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	5				5			3
Collateralized Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	0				0			54
Mortgage-backed Securities, Issued by Private Enterprises [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	132				132			154
Mortgage-backed Securities, Issued by Private Enterprises [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0				0			0
Mortgage-backed Securities, Issued by Private Enterprises [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0				0			0
Mortgage-backed Securities, Issued by Private Enterprises [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	132				132			154
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	498				498			323
Available-for-sale Securities	22,811				22,811			18,911
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	0				0			0
Available-for-sale Securities	0				0			0
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	498				498			323
Available-for-sale Securities	22,811				22,811			18,911
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	0				0			0
Available-for-sale Securities	0				0			0
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	32				32			65
Available-for-sale Securities	237				237			237
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	0				0			0
Available-for-sale Securities	0				0			0
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	32				32			65
Available-for-sale Securities	225				225			203
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	0				0			0
Available-for-sale Securities	12				12			34
US Government Agencies Debt Securities | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	460				460			426
Available-for-sale Securities	970				970			984
US Government Agencies Debt Securities | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	0				0			0
Available-for-sale Securities	0				0			0
US Government Agencies Debt Securities | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	460				460			426
Available-for-sale Securities	970				970			984
US Government Agencies Debt Securities | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	0				0			0
Available-for-sale Securities	0				0			0
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	252				252			219
Available-for-sale Securities	1,011				1,011			1,293
Trading Liabilities, Fair Value Disclosure	621				621			472
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	252				252			219
Available-for-sale Securities	1,011				1,011			1,293
Trading Liabilities, Fair Value Disclosure	621				621			472
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	0				0			0
Available-for-sale Securities	0				0			0
Trading Liabilities, Fair Value Disclosure	0				0			0
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading assets	0				0			0
Available-for-sale Securities	0				0			0
Trading Liabilities, Fair Value Disclosure	0				0			0
Derivative Financial Instruments, Liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading Liabilities, Fair Value Disclosure	491				491			502
Derivative Financial Instruments, Liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading Liabilities, Fair Value Disclosure	4,524				4,524			5,167
Derivative Financial Instruments, Liabilities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading Liabilities, Fair Value Disclosure	12				12			4
Federal Reserve Bank Stock [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	402				402			402
Equity Funds [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	109				109			103
Corporate and Other [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure								261
Corporate and Other [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure								0
Corporate and Other [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure								261
Corporate and Other [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure								0
Residential Mortgage, Loans Held For Sale [Member] | Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	1,560				1,560			1,117
Residential Mortgage, Loans Held For Sale [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	0				0			0
Residential Mortgage, Loans Held For Sale [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	1,559				1,559			1,114
Residential Mortgage, Loans Held For Sale [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	1				1			3
Trading Account Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3				0			0
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liabilities Transfers To From Other Line Items In The Balance Sheet				50			(159)
Affordable Housing [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Impairment Charges	8		(36)	(9)	(28)		9	(3)
Other Assets [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Impairment Charges	(49)				(62)			(61)
Other Assets [Member] | Property Subject to Operating Lease [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Impairment Charges	(49)			(38)	(57)		(39)
Other Assets [Member] | Land [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Impairment Charges	(5)			0	(5)		0
Derivative Financial Instruments, Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities	360				360			525
Derivative Financial Instruments, Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	1,237				1,237			1,384
Other Trading [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	1,237				1,237			1,384
Derivative Liabilities	360				360			525
Collateralized Loan Obligations [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Option, Credit Risk, Gains (Losses) on Assets	0			1	0		2
Trading Account Assets [Member] | Commercial and Corporate Leveraged Loans [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	373				373			313
Fair Value, Option, Credit Risk, Gains (Losses) on Assets				1			2
Residential Mortgage, Loans Held For Sale [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Option, Credit Risk, Gains (Losses) on Assets				2
Long-term Debt [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Option, Credit Risk, Gains (Losses) on Liabilities	(2)			9	24		27
Visa Interest [Member] | Not Designated as Hedging Instrument [Member] | Derivative Financial Instruments, Liabilities [Member] | Other Liabilities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Liabilities, Fair Value Disclosure								3
Equity Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	939	[8]			939	[8]		842	[8]
Equity Securities | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	$ 7				$ 7			$ 1

[1] At September 30, 2014, $1.2 billion, net of $312 million offsetting cash collateral, is recognized in trading assets and derivatives within the Company's Consolidated Balance Sheets. At December 31, 2013, $1.4 billion, net of $457 million offsetting cash collateral, is recognized in trading assets and derivatives within the Company's Consolidated Balance Sheets.

[2] At September 30, 2014, $360 million, net of $876 million offsetting cash collateral, is recognized in trading liabilities and derivatives within the Company's Consolidated Balance Sheets. At December 31, 2013, $525 million, net of $864 million offsetting cash collateral, is recognized in trading liabilities and derivatives within the Company's Consolidated Balance Sheets.

[3] Includes contingent consideration obligations related to acquisitions.

[4] Includes contingent consideration obligations related to acquisitions, as well as the derivative associated with the Company's sale of Visa shares during the year ended December 31, 2009.

[5] Includes $336 million of FHLB of Atlanta stock, $402 million of Federal Reserve Bank stock, $103 million in mutual fund investments, and $1 million of other.

[6] 1 Amounts represent offsetting cash collateral received from and paid to the same derivative counterparties and the impact of netting derivative assets and derivative liabilities when a legally enforceable master netting agreement or similar agreement exists.

[7] Includes $421 million of FHLB of Atlanta stock, $402 million of Federal Reserve Bank stock, $109 million in mutual fund investments, and $7 million of other.

[8] At September 30, 2014, other equity securities comprised the following: $421 million in FHLB of Atlanta stock, $402 million in Federal Reserve Bank stock, $109 million in mutual fund investments, and $7 million of other. At December 31, 2013, other equity securities comprised the following: $336 million in FHLB of Atlanta stock, $402 million in Federal Reserve Bank stock, $103 million in mutual fund investments, and $1 million of other.