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, 2013		Dec. 31, 2012
Total loans and leases	$ 87,142	[1]	$ 85,706	[2],[3]
Residential Mortgage Loans
Total loans and leases	12,445	[4]	11,941	[5]
Consumer Portfolio Segment
Total loans and leases	23,945	[4]	24,377	[5]
Home Equity | Consumer Portfolio Segment
Total loans and leases	9,356		10,018
Automobile Loans | Consumer Portfolio Segment
Total loans and leases	12,072		11,972
Credit Card | Consumer Portfolio Segment
Total loans and leases	2,157		2,097
Consumer Other Financing Receivable | Consumer Portfolio Segment
Total loans and leases	360		290
Performing Financing Receivable
Total loans and leases	36,141		35,986
Performing Financing Receivable | Residential Mortgage
Total loans and leases	12,279	[6]	11,704	[6]
Performing Financing Receivable | Home Equity
Total loans and leases	9,308		9,965
Performing Financing Receivable | Automobile Loans
Total loans and leases	12,071		11,970
Performing Financing Receivable | Credit Card
Total loans and leases	2,123		2,058
Performing Financing Receivable | Consumer Other Financing Receivable
Total loans and leases	360		289
Nonperforming Financing Receivable
Total loans and leases	249		332
Nonperforming Financing Receivable | Residential Mortgage
Total loans and leases	166	[6]	237	[6]
Nonperforming Financing Receivable | Home Equity
Total loans and leases	48		53
Nonperforming Financing Receivable | Automobile Loans
Total loans and leases	1		2
Nonperforming Financing Receivable | Credit Card
Total loans and leases	34		39
Nonperforming Financing Receivable | Consumer Other Financing Receivable
Total loans and leases			$ 1

[1] Excludes $89 of loans measured at fair value.

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

[3] Includes an immaterial amount of government insured commercial loans 30-89 and 90 days past due and accruing whose repayments are insured by the SBA at December 31, 2012.

[4] Excludes $89 of residential mortgage loans measured at fair value, and includes $875 of leveraged leases, net of unearned income.

[5] Excludes $76 of residential mortgage loans measured at fair value, and includes $862 of leveraged leases, net of unearned income.

[6] Excludes $89 and $76 of loans measured at fair value at September 30, 2013 and December 31, 2012, respectively.