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	Mar. 31, 2012		Dec. 31, 2011		Mar. 31, 2011
Total loans and leases	$ 82,046	[1]	$ 80,953	[2],[3]	$ 77,411	[4],[5]
Performing Financing Receivable
Total loans and leases	35,205		35,101		33,776
Performing Financing Receivable | Residential Mortgage
Total loans and leases	10,762	[6]	10,332	[6]	9,215	[6]
Performing Financing Receivable | Home Equity
Total loans and leases	10,443		10,665		11,166
Performing Financing Receivable | Automobile Loans
Total loans and leases	11,829		11,825		11,126
Performing Financing Receivable | Credit Card
Total loans and leases	1,851		1,930		1,767
Performing Financing Receivable | Consumer Other Financing Receivable
Total loans and leases	320		349		502
Nonperforming Financing Receivable
Total loans and leases	364		380		434
Nonperforming Financing Receivable | Residential Mortgage
Total loans and leases	265	[6]	275	[6]	261	[6]
Nonperforming Financing Receivable | Home Equity
Total loans and leases	50		54		56
Nonperforming Financing Receivable | Automobile Loans
Total loans and leases	3		2		3
Nonperforming Financing Receivable | Credit Card
Total loans and leases	45		48		54
Nonperforming Financing Receivable | Consumer Other Financing Receivable
Total loans and leases	$ 1		$ 1		$ 60

[1] Excludes $67 of loans measured at fair value.

[2] Excludes $65 of residential mortgage loans measured at fair value, and includes $1,022 of leveraged leases, net of unearned income.

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

[4] Excludes $54 of residential mortgage loans measured at fair value, includes $1,039 of leveraged leases, net of unearned income.

[5] Excludes $54 of loans measured at fair value.

[6] Excludes $67, $65, and $54 of loans measured at fair value at March 31, 2012, December 31, 2011, and March 31, 2011, respectively.