Summary of the Credit Risk Profile of the Bancorp's Residential Mortgage and Consumer Portfolio Segments by Class (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011		Dec. 31, 2010
Total loans and leases	$ 80,953	[1]	$ 77,445	[2],[3]
Performing Financing Receivable
Total loans and leases	35,101		33,517
Performing Financing Receivable | Residential Mortgage
Total loans and leases	10,332	[4]	8,642
Performing Financing Receivable | Home Equity
Total loans and leases	10,665		11,457
Performing Financing Receivable | Automobile Loans
Total loans and leases	11,825		10,980
Performing Financing Receivable | Credit Card
Total loans and leases	1,930		1,841
Performing Financing Receivable | Consumer Other Financing Receivable
Total loans and leases	349		597
Nonperforming Financing Receivable
Total loans and leases	380		466
Nonperforming Financing Receivable | Residential Mortgage
Total loans and leases	275	[4]	268	[4]
Nonperforming Financing Receivable | Home Equity
Total loans and leases	54		56
Nonperforming Financing Receivable | Automobile Loans
Total loans and leases	2		3
Nonperforming Financing Receivable | Credit Card
Total loans and leases	48		55
Nonperforming Financing Receivable | Consumer Other Financing Receivable
Total loans and leases	$ 1		$ 84

[1] Excludes $65 of loans measured at fair value.

[2] Excludes $46 of residential mortgage loans measured at fair value, and includes $1,039 of leveraged leases, net of unearned income.

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

[4] Excludes $65 and $46 of loans measured at fair value at December 31, 2011 and 2010, respectively.