Nonperforming Assets (Detail) (USD $) In Millions	Sep. 30, 2011		Dec. 31, 2010
Nonaccrual/NPLs	$ 3,239	[1]	$ 4,110	[2]
OREO	509	[3]	596	[3]
Other repossessed assets	15		52
Total nonperforming assets	3,763		4,758
Commercial Portfolio Segment
Nonaccrual/NPLs	1,205	[1]	1,887	[2]
Commercial Portfolio Segment | Commercial and Industrial
Nonaccrual/NPLs	479	[1],[4],[5]	584	[2],[4],[6]
Commercial Portfolio Segment | Commercial Real Estate
Nonaccrual/NPLs	341	[1]	342	[2]
Commercial Portfolio Segment | Commercial Construction
Nonaccrual/NPLs	385	[1]	961	[2]
Residential Mortgage Loans
Nonaccrual/NPLs	2,007	[1]	2,188	[2]
Residential Mortgage Loans | Residential Nonguaranteed
Nonaccrual/NPLs	1,417	[1],[7],[8]	1,543	[2],[7],[9]
Residential Mortgage Loans | Home Equity
Nonaccrual/NPLs	340	[1]	355	[2]
Residential Mortgage Loans | Residential Construction
Nonaccrual/NPLs	250	[1]	290	[2]
Consumer Portfolio Segment
Nonaccrual/NPLs	27	[1]	35	[2]
Consumer Portfolio Segment | Consumer Other Direct
Nonaccrual/NPLs	7	[1]	10	[2]
Consumer Portfolio Segment | Consumer Indirect
Nonaccrual/NPLs	$ 20	[1]	$ 25	[2]

[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] Does not include foreclosed real estate related to loans insured by the FHA or the VA. Proceeds due from the FHA and the VA are recorded as a receivable in other assets until the funds are received and the property is conveyed. The receivable amount related to proceeds due from the FHA or the VA totaled $134 million and $195 million at September 30, 2011 and December 31, 2010, respectively.

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

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

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

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

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

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