Payment Status for the LHFI Portfolio (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	$ 126,986		$ 124,733
Accruing 30-89 Days Past Due	814		945
Accruing 90+ Days Past Due	1,045		1,228
Nonaccruing	899	[1],[2]	971	[1],[3]
Total	129,744	[4]	127,877	[4]
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	68,234		63,985
Accruing 30-89 Days Past Due	46		53
Accruing 90+ Days Past Due	11		25
Nonaccruing	247	[2]	247	[3]
Total	68,538		64,310
Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	38,504		41,563
Accruing 30-89 Days Past Due	255		331
Accruing 90+ Days Past Due	460		584
Nonaccruing	642	[2]	712	[3]
Total	39,861		43,190
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	20,248		19,185
Accruing 30-89 Days Past Due	513		561
Accruing 90+ Days Past Due	574		619
Nonaccruing	10	[2]	12	[3]
Total	21,345		20,377
Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	61,085		57,713
Accruing 30-89 Days Past Due	42		47
Accruing 90+ Days Past Due	11		18
Nonaccruing	199	[2]	196	[3]
Total	61,337		57,974
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	6,063		5,430
Accruing 30-89 Days Past Due	4		5
Accruing 90+ Days Past Due	0		7
Nonaccruing	38	[2]	39	[3]
Total	6,105		5,481
Commercial Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	1,086		842
Accruing 30-89 Days Past Due	0		1
Accruing 90+ Days Past Due	0		0
Nonaccruing	10	[2]	12	[3]
Total	1,096		855
Residential Guaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	181		2,787
Accruing 30-89 Days Past Due	35		58
Accruing 90+ Days Past Due	445		571
Nonaccruing	0		0
Total	661		3,416
Residential Nonguaranteed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	23,642	[5]	23,808	[6]
Accruing 30-89 Days Past Due	112	[5]	150	[6]
Accruing 90+ Days Past Due	14	[5]	13	[6]
Nonaccruing	405	[2],[5]	441	[3],[6]
Total	24,173	[5],[7]	24,412	[6],[7]
Home Equity Line of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	14,224		14,480
Accruing 30-89 Days Past Due	104		119
Accruing 90+ Days Past Due	0		0
Nonaccruing	191	[2]	210	[3]
Total	14,519	[7]	14,809	[7]
Residential Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	457		488
Accruing 30-89 Days Past Due	4		4
Accruing 90+ Days Past Due	1		0
Nonaccruing	46	[2]	61	[3]
Total	508	[7]	553	[7]
Federally Guaranteed Student Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	4,430		4,475
Accruing 30-89 Days Past Due	424		461
Accruing 90+ Days Past Due	566		609
Nonaccruing	0		0
Total	5,420		5,545
Consumer Other Direct [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	3,648		2,803
Accruing 30-89 Days Past Due	21		18
Accruing 90+ Days Past Due	2		3
Nonaccruing	4	[2]	5	[3]
Total	3,675	[8]	2,829	[8]
Consumer Indirect [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	11,432		11,189
Accruing 30-89 Days Past Due	62		75
Accruing 90+ Days Past Due	1		1
Nonaccruing	6	[2]	7	[3]
Total	11,501	[8]	11,272	[8]
Consumer Credit Card Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	738		718
Accruing 30-89 Days Past Due	6		7
Accruing 90+ Days Past Due	5		6
Nonaccruing	0		0
Total	$ 749	[8]	$ 731	[8]

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

[2] Nonaccruing loans past due 90 days or more totaled $567 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 $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.

[4] Includes loans of consolidated VIEs of $307 million and $327 million at June 30, 2014 and December 31, 2013, respectively.

[5] Includes $292 million of loans carried at fair value, the majority of which were accruing current.

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

[7] Excludes $661 million and $3.4 billion at June 30, 2014 and December 31, 2013, respectively, of guaranteed residential loans. At June 30, 2014 and December 31, 2013, the majority of these loans had FICO scores of 700 and above.

[8] Excludes $5.4 billion and $5.5 billion of guaranteed student loans at June 30, 2014 and December 31, 2013, respectively.