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	Sep. 30, 2012		Dec. 31, 2011		Sep. 30, 2011
Total loans and leases	$ 82,983	[1],[2],[3]	$ 80,953	[4],[5],[6]	$ 79,154	[7],[8],[9]
Performing Financing Receivable
Total loans and leases	35,723		35,101		34,602
Performing Financing Receivable | Residential Mortgage
Total loans and leases	11,377	[10]	10,332	[10]	9,911	[10]
Performing Financing Receivable | Home Equity
Total loans and leases	10,187		10,665		10,862
Performing Financing Receivable | Automobile Loans
Total loans and leases	11,910		11,825		11,591
Performing Financing Receivable | Credit Card
Total loans and leases	1,955		1,930		1,832
Performing Financing Receivable | Consumer Other Financing Receivable
Total loans and leases	294		349		406
Nonperforming Financing Receivable
Total loans and leases	347		380		383
Nonperforming Financing Receivable | Residential Mortgage
Total loans and leases	255	[10]	275	[10]	276	[10]
Nonperforming Financing Receivable | Home Equity
Total loans and leases	51		54		58
Nonperforming Financing Receivable | Automobile Loans
Total loans and leases	2		2		2
Nonperforming Financing Receivable | Credit Card
Total loans and leases	39		48		46
Nonperforming Financing Receivable | Consumer Other Financing Receivable
Total loans and leases			$ 1		$ 1

[1] Excludes $76 of residential mortgage loans measured at fair value, and includes $914 of leveraged leases, net of unearned income.

[2] Excludes $76 of loans measured at fair value.

[3] Includes an immaterial amount of government insured commercial loans 30-89 days and 90 days past due and accruing whose repayments are insured by the Small Business Administration at September 30, 2012.

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

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

[6] Includes an immaterial amount of government insured commercial loans 30-89 and 90 days past due and accruing whose repayments are insured by the Small Business Administration at December 31, 2011.

[7] Excludes $62 of residential mortgage loans measured at fair value, includes $1,018 of leveraged leases, net of unearned income.

[8] Excludes $62 of loans measured at fair value.

[9] Includes $1 of government insured loans 30-89 days past due and accruing of government insured commercial loans whose repayments are insured by the Small Business Administration at September 30, 2011 and an immaterial amount of government insured commercial loans 90 days past due and still accruing.

[10] Excludes $76, $65, and $62 of loans measured at fair value at September 30, 2012, December 31, 2011, and September 30, 2011, respectivel