Summarizes the Total Nonperforming and Delinquent Loans and Leases (Detail) (USD $) In Millions	Jun. 30, 2011		Dec. 31, 2010		Jun. 30, 2010
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans and leases	$ 1,240		$ 1,333		$ 2,236
Restructured nonaccrual loans and leases	399		347		294
Total nonperforming loans and leases	1,639	[1]	1,680	[1]	2,530
OREO and other repossessed property	449	[2]	494	[2]	439	[2]
Total nonperforming assets	2,088	[3]	2,174	[3]	2,969	[3]
Total loans and leases 90 days past due and still accruing	279	[4]	274	[5]
Non Accrual Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases 90 days past due and still accruing	$ 279		$ 274		$ 397

[1] Excludes $176 and $294 of nonaccrual loans held for sale at June 30, 2011 and December 31, 2010, respectively.

[2] Excludes $54, $38 and $30 of OREO related to government insured loans at June 30, 2011, December 31, 2010 and June 30, 2010, respectively.

[3] Excludes $176, $294 and $167 of nonaccrual loans held for sale at June 30, 2011, December 31, 2010 and June 30, 2010, respectively.

[4] Excludes $59 of loans measured at fair value.

[5] Excludes $46 of loans measured at fair value.