Summary of the Credit Risk Profile of the Bancorp's Commercial Portfolio Segment by Class (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Financing Receivable, Modifications [Line Items]
Total loans and leases	$ 88,522	[1],[2]	$ 85,706	[3],[4]
Commercial Portfolio Segment
Financing Receivable, Modifications [Line Items]
Total loans and leases	52,046		49,388
Commercial Portfolio Segment | Commercial and Industrial Loans
Financing Receivable, Modifications [Line Items]
Total loans and leases	39,316		36,038
Commercial Portfolio Segment | Commercial Mortgage Loans Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Total loans and leases	4,507		4,876
Commercial Portfolio Segment | Commercial Mortgage Loans Non Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Total loans and leases	3,559		4,227
Commercial Portfolio Segment | Commercial Construction
Financing Receivable, Modifications [Line Items]
Total loans and leases	1,039		698
Commercial Portfolio Segment | Commercial Leases
Financing Receivable, Modifications [Line Items]
Total loans and leases	3,625		3,549
Pass | Commercial Portfolio Segment
Financing Receivable, Modifications [Line Items]
Total loans and leases	47,922		44,340
Pass | Commercial Portfolio Segment | Commercial and Industrial Loans
Financing Receivable, Modifications [Line Items]
Total loans and leases	36,776		33,521
Pass | Commercial Portfolio Segment | Commercial Mortgage Loans Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Total loans and leases	3,866		3,934
Pass | Commercial Portfolio Segment | Commercial Mortgage Loans Non Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Total loans and leases	2,879		2,958
Pass | Commercial Portfolio Segment | Commercial Construction
Financing Receivable, Modifications [Line Items]
Total loans and leases	855		444
Pass | Commercial Portfolio Segment | Commercial Leases
Financing Receivable, Modifications [Line Items]
Total loans and leases	3,546		3,483
Special Mention | Commercial Portfolio Segment
Financing Receivable, Modifications [Line Items]
Total loans and leases	1,663		2,007
Special Mention | Commercial Portfolio Segment | Commercial and Industrial Loans
Financing Receivable, Modifications [Line Items]
Total loans and leases	1,118		1,113
Special Mention | Commercial Portfolio Segment | Commercial Mortgage Loans Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Total loans and leases	209		338
Special Mention | Commercial Portfolio Segment | Commercial Mortgage Loans Non Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Total loans and leases	248		449
Special Mention | Commercial Portfolio Segment | Commercial Construction
Financing Receivable, Modifications [Line Items]
Total loans and leases	32		59
Special Mention | Commercial Portfolio Segment | Commercial Leases
Financing Receivable, Modifications [Line Items]
Total loans and leases	56		48
Risk Level, Substandard | Commercial Portfolio Segment
Financing Receivable, Modifications [Line Items]
Total loans and leases	2,440		3,010
Risk Level, Substandard | Commercial Portfolio Segment | Commercial and Industrial Loans
Financing Receivable, Modifications [Line Items]
Total loans and leases	1,419		1,379
Risk Level, Substandard | Commercial Portfolio Segment | Commercial Mortgage Loans Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Total loans and leases	415		603
Risk Level, Substandard | Commercial Portfolio Segment | Commercial Mortgage Loans Non Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Total loans and leases	431		815
Risk Level, Substandard | Commercial Portfolio Segment | Commercial Construction
Financing Receivable, Modifications [Line Items]
Total loans and leases	152		195
Risk Level, Substandard | Commercial Portfolio Segment | Commercial Leases
Financing Receivable, Modifications [Line Items]
Total loans and leases	23		18
Risk Level, Doubtful | Commercial Portfolio Segment
Financing Receivable, Modifications [Line Items]
Total loans and leases	21		31
Risk Level, Doubtful | Commercial Portfolio Segment | Commercial and Industrial Loans
Financing Receivable, Modifications [Line Items]
Total loans and leases	3		25
Risk Level, Doubtful | Commercial Portfolio Segment | Commercial Mortgage Loans Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Total loans and leases	17		1
Risk Level, Doubtful | Commercial Portfolio Segment | Commercial Mortgage Loans Non Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Total loans and leases	$ 1		$ 5

[1] Excludes $92 of residential mortgage loans measured at fair value, and includes $881 of leveraged leases, net of unearned income.

[2] Excludes $92 of loans measured at fair value.

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

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