Payment Status for the LHFI Portfolio (Detail) (USD $) In Millions	Sep. 30, 2011		Dec. 31, 2010
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	$ 111,066		$ 108,768
Accruing 30-89 Days Past Due	1,346		1,532
Accruing 90+ Days Past Due	1,824		1,565
Nonaccruing	3,239	[1]	4,110	[2]
Total	117,475		115,975
Commercial Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	53,349		51,435
Accruing 30-89 Days Past Due	84		149
Accruing 90+ Days Past Due	67		17
Nonaccruing	1,205	[1]	1,887	[2]
Total	54,705		53,488
Commercial Portfolio Segment | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	47,366	[3]	44,046	[4]
Accruing 30-89 Days Past Due	74	[3]	111	[4]
Accruing 90+ Days Past Due	66	[3]	12	[4]
Nonaccruing	479	[1],[3],[5]	584	[2],[4],[5]
Total	47,985	[3]	44,753	[3]
Commercial Portfolio Segment | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	4,979		5,794
Accruing 30-89 Days Past Due	9		27
Accruing 90+ Days Past Due	1		4
Nonaccruing	341	[1]	342	[2]
Total	5,330		6,167
Commercial Portfolio Segment | Commercial Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	1,004		1,595
Accruing 30-89 Days Past Due	1		11
Accruing 90+ Days Past Due	0		1
Nonaccruing	385	[1]	961	[2]
Total	1,390		2,568
Residential Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	41,153		42,500
Accruing 30-89 Days Past Due	766		899
Accruing 90+ Days Past Due	1,066		934
Nonaccruing	2,007	[1]	2,188	[2]
Total	44,992		46,521
Residential Mortgage Loans | Residential Guaranteed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	3,237		3,469
Accruing 30-89 Days Past Due	179		167
Accruing 90+ Days Past Due	1,033		884
Nonaccruing	0	[1]	0	[2]
Total	4,449		4,520
Residential Mortgage Loans | Residential Nonguaranteed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	21,728	[6]	21,916	[7]
Accruing 30-89 Days Past Due	342	[6]	456	[7]
Accruing 90+ Days Past Due	30	[6]	44	[7]
Nonaccruing	1,417	[1],[6],[8]	1,543	[2],[7],[8]
Total	23,517	[6]	23,959	[7]
Residential Mortgage Loans | Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	15,417		16,162
Accruing 30-89 Days Past Due	223		234
Accruing 90+ Days Past Due	0		0
Nonaccruing	340	[1]	355	[2]
Total	15,980		16,751
Residential Mortgage Loans | Residential Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	771		953
Accruing 30-89 Days Past Due	22		42
Accruing 90+ Days Past Due	3		6
Nonaccruing	250	[1]	290	[2]
Total	1,046		1,291
Consumer Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	16,564		14,833
Accruing 30-89 Days Past Due	496		484
Accruing 90+ Days Past Due	691		614
Nonaccruing	27	[1]	35	[2]
Total	17,778		15,966
Consumer Portfolio Segment | Guaranteed Student Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	4,245		3,281
Accruing 30-89 Days Past Due	413		383
Accruing 90+ Days Past Due	675		596
Nonaccruing	0	[1]	0	[2]
Total	5,333		4,260
Consumer Portfolio Segment | Consumer Other Direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	1,918		1,692
Accruing 30-89 Days Past Due	15		15
Accruing 90+ Days Past Due	5		5
Nonaccruing	7	[1]	10	[2]
Total	1,945		1,722
Consumer Portfolio Segment | Consumer Indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	9,919		9,400
Accruing 30-89 Days Past Due	60		74
Accruing 90+ Days Past Due	4		0
Nonaccruing	20	[1]	25	[2]
Total	10,003		9,499
Consumer Portfolio Segment | Consumer Credit Card
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing Current	482		460
Accruing 30-89 Days Past Due	8		12
Accruing 90+ Days Past Due	7		13
Nonaccruing	0	[1]	0	[2]
Total	497		485
Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	47,985		44,753
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	5,330		6,167
Commercial Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,390		2,568
Residential Nonguaranteed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	23,517	[9]	23,959	[9]
Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	15,980		16,751
Residential Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,046		1,291
Consumer Other Direct
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,504	[10]	1,309	[10]
Consumer Indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	10,003		9,499
Consumer Credit Card
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 497		$ 485

[1] Total nonaccruing loans past due 90 days or more totaled $2.5 billion. Nonaccruing loans past due fewer than 90 days include modified nonaccrual loans reported as TDRs.

[2] Total nonaccruing loans past due 90 days or more totaled $3.3 billion. Nonaccruing loans past due fewer than 90 days include TDRs.

[3] Includes $3 million of loans carried at fair value.

[4] Includes $4 million of loans carried at fair value.

[5] Includes $3 million and $4 million of loans carried at fair value at September 30, 2011 and December 31, 2010, respectively.

[6] Includes $449 million of loans carried at fair value.

[7] Includes $488 million of loans carried at fair value.

[8] Includes $23 million and $24 million of loans carried at fair value at September 30, 2011 and December 31, 2010 respectively.

[9] Excludes $4.4 billion and $4.5 billion at September 30, 2011 and December 31, 2010, respectively, of federally guaranteed residential loans. At both September 30, 2011 and December 31, 2010, the majority of these loans had FICO scores of 700 and above.

[10] Excludes $441 million and $413 million as of September 30, 2011 and December 31, 2010, respectively, of private-label student loans with third party insurance. At both September 30, 2011 and December 31, 2010, the majority of these loans had FICO scores of 700 and above.