Payment Status for the LHFI Portfolio (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	$ 124,733		$ 118,008
Accruing 30-89 Days Past Due	945		1,133
Accruing 90+ Days Past Due	1,228		782
Nonaccruing	971	[1],[2]	1,547	[1],[3]
Total	127,877	[4]	121,470	[4]
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	63,985		58,476
Accruing 30-89 Days Past Due	53		92
Accruing 90+ Days Past Due	25		26
Nonaccruing	247	[2]	294	[3]
Total	64,310		58,888
Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	41,563		40,863
Accruing 30-89 Days Past Due	331		395
Accruing 90+ Days Past Due	584		713
Nonaccruing	712	[2]	1,228	[3]
Total	43,190		43,199
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	19,185		18,669
Accruing 30-89 Days Past Due	561		646
Accruing 90+ Days Past Due	619		43
Nonaccruing	12	[2]	25	[3]
Total	20,377		19,383
Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	57,713		53,747
Accruing 30-89 Days Past Due	47		81
Accruing 90+ Days Past Due	18		26
Nonaccruing	196	[2]	194	[3]
Total	57,974		54,048
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	5,430		4,050
Accruing 30-89 Days Past Due	5		11
Accruing 90+ Days Past Due	7		0
Nonaccruing	39	[2]	66	[3]
Total	5,481		4,127
Commercial Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	842		679
Accruing 30-89 Days Past Due	1		0
Accruing 90+ Days Past Due	0		0
Nonaccruing	12	[2]	34	[3]
Total	855		713
Residential Guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	2,787		3,523
Accruing 30-89 Days Past Due	58		39
Accruing 90+ Days Past Due	571		690
Nonaccruing	0	[2]	0	[3]
Total	3,416		4,252
Residential Nonguaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	23,808	[5]	22,401	[6]
Accruing 30-89 Days Past Due	150	[5]	192	[6]
Accruing 90+ Days Past Due	13	[5]	21	[6]
Nonaccruing	441	[2],[5]	775	[3],[6]
Total	24,412	[5],[7]	23,389	[6],[7]
Home Equity Line of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	14,480		14,314
Accruing 30-89 Days Past Due	119		149
Accruing 90+ Days Past Due	0		1
Nonaccruing	210	[2]	341	[3]
Total	14,809	[7]	14,805	[7]
Residential Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	488		625
Accruing 30-89 Days Past Due	4		15
Accruing 90+ Days Past Due	0		1
Nonaccruing	61	[2]	112	[3]
Total	553	[7]	753	[7]
Federally Guaranteed Student Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	4,475		4,769
Accruing 30-89 Days Past Due	461		556
Accruing 90+ Days Past Due	609		32
Nonaccruing	0	[2]	0	[3]
Total	5,545		5,357
Consumer Other Direct [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	2,803		2,372
Accruing 30-89 Days Past Due	18		15
Accruing 90+ Days Past Due	3		3
Nonaccruing	5	[2]	6	[3]
Total	2,829	[8]	2,396	[8]
Consumer Indirect [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	11,189		10,909
Accruing 30-89 Days Past Due	75		68
Accruing 90+ Days Past Due	1		2
Nonaccruing	7	[2]	19	[3]
Total	11,272	[8]	10,998	[8]
Consumer Credit Card Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	718		619
Accruing 30-89 Days Past Due	7		7
Accruing 90+ Days Past Due	6		6
Nonaccruing	0	[2]	0	[3]
Total	$ 731	[8]	$ 632	[8]

[1] Nonaccruing restructured loans are included in total nonaccrual/NPLs.

[2] Nonaccruing loans past due 90 days or more totaled $653 million. Nonaccruing loans past due fewer than 90 days include modified nonaccrual loans reported as TDRs and performing second lien loans which are classified as nonaccrual when the first lien loan is nonperforming.

[3] Nonaccruing loans past due 90 days or more totaled $975 million. Nonaccruing loans past due fewer than 90 days include modified nonaccrual loans reported as TDRs and performing second lien loans which are classified as nonaccrual when the first lien loan is nonperforming.

[4] 2 Includes loans of consolidated VIEs of $327 million and $365 million at December 31, 2013 and 2012, respectively.

[5] Includes $302 million of loans carried at fair value, the majority of which were accruing current.

[6] Includes $379 million of loans carried at fair value, the majority of which were accruing current.

[7] Excludes $3.4 billion and $4.3 billion at December 31, 2013 and 2012, respectively, of guaranteed residential loans. At December 31, 2013 and 2012, the majority of these loans had FICO scores of 700 and above.

[8] Excludes $5.5 billion and $5.4 billion at December 31, 2013 and 2012, respectively, of guaranteed student loans