Summary of the Bancorp's Nonperforming Loans and Leases by Class (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011		Dec. 31, 2010
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	$ 1,438	[1]	$ 1,680	[1]
OREO and other repossessed property	378	[2]	494	[2]
Commercial Portfolio Segment
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	1,058		1,214
Commercial Portfolio Segment | Commercial And Industrial Loans [Member]
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	487		568
Commercial Portfolio Segment | Commercial Mortgage Loans Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	170		168
Commercial Portfolio Segment | Commercial Mortgage Loans Non Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	251		267
Commercial Portfolio Segment | Commercial Construction
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	138		192
Commercial Portfolio Segment | Commercial Leases [Member]
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	12		19
Residential Mortgage Loans
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	275		268
Consumer Portfolio Segment
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	105		198
Consumer Portfolio Segment | Home Equity
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	54		56
Consumer Portfolio Segment | Automobile Loans
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	2		3
Consumer Portfolio Segment | Credit Card
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	48		55
Consumer Portfolio Segment | Consumer Other Financing Receivable
Financing Receivable, Modifications [Line Items]
Nonperforming Loans and Leases	$ 1		$ 84

[1] Excludes $138 and $294 of nonaccrual loans held for sale at December 31, 2011 and 2010, respectively.

[2] Excludes $64 and $38 of OREO related to government insured loans at December 31, 2011 and 2010, respectively.