Summary of the Bancorp's Nonperforming Loans and Leases by Class (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012		Dec. 31, 2011		Jun. 30, 2011
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	$ 1,342	[1]	$ 1,438	[1]	$ 1,639	[1]
OREO and other repossessed property	277	[2]	378	[2]	449	[2]
Commercial Portfolio Segment
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	983		1,058		1,253
Commercial Portfolio Segment | Commercial And Industrial Loans [Member]
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	454		487		607
Commercial Portfolio Segment | Commercial Mortgage Loans Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	174		170		286
Commercial Portfolio Segment | Commercial Mortgage Loans Non Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	240		251		178
Commercial Portfolio Segment | Commercial Construction
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	112		138		160
Commercial Portfolio Segment | Commercial Leases [Member]
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	3		12		22
Residential Mortgage Loans
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	260		275		272
Consumer Portfolio Segment
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	99		105		114
Consumer Portfolio Segment | Home Equity
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	54		54		58
Consumer Portfolio Segment | Automobile Loans
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	3		2		3
Consumer Portfolio Segment | Credit Card
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	42		48		50
Consumer Portfolio Segment | Consumer Other Financing Receivable
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases			$ 1		$ 3

[1] Excludes $60, $138 and $176 of nonaccrual loans held for sale at June 30, 2012, December 31, 2011 and June 30, 2011, respectively.

[2] Excludes $70, $64 and $54 of OREO related to government insured loans at June 30, 2012, December 31, 2011 and June 30, 2011, respectively. Includes $13, $17, and $20 of nonaccrual government insured commercial loans whose repayments are insured by the Small Business Administration at June 30, 2012, December 31, 2012, and June 30, 2011, respectively, and $1 and $2 of restructured nonaccrual government insured commercial loans at June 30, 2012 and December 31, 2011, respectively, and an immaterial amount at June 30, 2011.