Summary of the Credit Risk Profile of the Bancorp's Commercial Portfolio Segment by Class (Detail) (USD $) In Millions	Jun. 30, 2011		Dec. 31, 2010
Financing Receivable, Modifications [Line Items]
Total loans and leases	$ 77,908	[1],[2]	$ 77,445	[3],[4]
Commercial Portfolio Segment | Pass
Financing Receivable, Modifications [Line Items]
Total loans and leases	35,638		35,104
Commercial Portfolio Segment | Pass | Commercial and Industrial Loans
Financing Receivable, Modifications [Line Items]
Total loans and leases	24,268		23,147
Commercial Portfolio Segment | Pass | Commercial Mortgage Loans, Owner Occupied
Financing Receivable, Modifications [Line Items]
Total loans and leases	3,995		4,034
Commercial Portfolio Segment | Pass | Commercial Mortgage Loans, Non Owner Occupied
Financing Receivable, Modifications [Line Items]
Total loans and leases	3,195		3,620
Commercial Portfolio Segment | Pass | Commercial Construction
Financing Receivable, Modifications [Line Items]
Total loans and leases	948		1,034
Commercial Portfolio Segment | Pass | Commercial Leases
Financing Receivable, Modifications [Line Items]
Total loans and leases	3,232		3,269
Commercial Portfolio Segment | Special Mention
Financing Receivable, Modifications [Line Items]
Total loans and leases	3,019		2,959
Commercial Portfolio Segment | Special Mention | Commercial and Industrial Loans
Financing Receivable, Modifications [Line Items]
Total loans and leases	1,594		1,406
Commercial Portfolio Segment | Special Mention | Commercial Mortgage Loans, Owner Occupied
Financing Receivable, Modifications [Line Items]
Total loans and leases	430		430
Commercial Portfolio Segment | Special Mention | Commercial Mortgage Loans, Non Owner Occupied
Financing Receivable, Modifications [Line Items]
Total loans and leases	640		647
Commercial Portfolio Segment | Special Mention | Commercial Construction
Financing Receivable, Modifications [Line Items]
Total loans and leases	303		416
Commercial Portfolio Segment | Special Mention | Commercial Leases
Financing Receivable, Modifications [Line Items]
Total loans and leases	52		60
Commercial Portfolio Segment | Risk Level, Substandard
Financing Receivable, Modifications [Line Items]
Total loans and leases	4,503		5,157
Commercial Portfolio Segment | Risk Level, Substandard | Commercial and Industrial Loans
Financing Receivable, Modifications [Line Items]
Total loans and leases	2,077		2,541
Commercial Portfolio Segment | Risk Level, Substandard | Commercial Mortgage Loans, Owner Occupied
Financing Receivable, Modifications [Line Items]
Total loans and leases	779		854
Commercial Portfolio Segment | Risk Level, Substandard | Commercial Mortgage Loans, Non Owner Occupied
Financing Receivable, Modifications [Line Items]
Total loans and leases	1,134		1,174
Commercial Portfolio Segment | Risk Level, Substandard | Commercial Construction
Financing Receivable, Modifications [Line Items]
Total loans and leases	473		540
Commercial Portfolio Segment | Risk Level, Substandard | Commercial Leases
Financing Receivable, Modifications [Line Items]
Total loans and leases	40		48
Commercial Portfolio Segment | Risk Level, Doubtful
Financing Receivable, Modifications [Line Items]
Total loans and leases	276		242
Commercial Portfolio Segment | Risk Level, Doubtful | Commercial and Industrial Loans
Financing Receivable, Modifications [Line Items]
Total loans and leases	160		97
Commercial Portfolio Segment | Risk Level, Doubtful | Commercial Mortgage Loans, Owner Occupied
Financing Receivable, Modifications [Line Items]
Total loans and leases	25		22
Commercial Portfolio Segment | Risk Level, Doubtful | Commercial Mortgage Loans, Non Owner Occupied
Financing Receivable, Modifications [Line Items]
Total loans and leases	35		64
Commercial Portfolio Segment | Risk Level, Doubtful | Commercial Construction
Financing Receivable, Modifications [Line Items]
Total loans and leases	54		58
Commercial Portfolio Segment | Risk Level, Doubtful | Commercial Leases
Financing Receivable, Modifications [Line Items]
Total loans and leases	2		1
Commercial Portfolio Segment
Financing Receivable, Modifications [Line Items]
Total loans and leases	43,436	[2]	43,462	[4]
Commercial Portfolio Segment | Commercial and Industrial Loans
Financing Receivable, Modifications [Line Items]
Total loans and leases	28,099		27,191
Commercial Portfolio Segment | Commercial Mortgage Loans, Owner Occupied
Financing Receivable, Modifications [Line Items]
Total loans and leases	5,229		5,340
Commercial Portfolio Segment | Commercial Mortgage Loans, Non Owner Occupied
Financing Receivable, Modifications [Line Items]
Total loans and leases	5,004		5,505
Commercial Portfolio Segment | Commercial Construction
Financing Receivable, Modifications [Line Items]
Total loans and leases	1,778		2,048
Commercial Portfolio Segment | Commercial Leases
Financing Receivable, Modifications [Line Items]
Total loans and leases	$ 3,326		$ 3,378

[1] Excludes $59 of loans measured at fair value.

[2] Excludes $59 of residential mortgage loans measured at fair value, and includes $1,015 of leveraged leases, net of unearned income.

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

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