Summarizes the Bancorp's Recorded Investment in Impaired Loans and Related Allowance by Class (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013		Dec. 31, 2012
Financing Receivable, Impaired
Unpaid Principal Balance	$ 3,035		$ 3,168
Recorded Investment	2,728	[1]	2,823	[2]
Allowance	271		295
Impaired Financing Receivables with No Related Allowance
Financing Receivable, Impaired
Unpaid Principal Balance	987		1,006
Recorded Investment	843		856
Impaired Financing Receivables with Related Allowance
Financing Receivable, Impaired
Unpaid Principal Balance	2,048		2,162
Recorded Investment	1,885		1,967
Allowance	271		295
Residential Mortgage Loans | Impaired Financing Receivables with No Related Allowance
Financing Receivable, Impaired
Unpaid Principal Balance	335		326
Recorded Investment	287		275
Residential Mortgage Loans | Impaired Financing Receivables with Related Allowance
Financing Receivable, Impaired
Unpaid Principal Balance	1,054		1,067
Recorded Investment	1,019		1,023
Allowance	134		137
Commercial and Industrial Loans | Commercial Portfolio Segment | Impaired Financing Receivables with No Related Allowance
Financing Receivable, Impaired
Unpaid Principal Balance	156		207
Recorded Investment	117		169
Commercial and Industrial Loans | Commercial Portfolio Segment | Impaired Financing Receivables with Related Allowance
Financing Receivable, Impaired
Unpaid Principal Balance	278		263
Recorded Investment	205		194
Allowance	60		65
Commercial Mortgage Loans, Owner Occupied | Commercial Portfolio Segment | Impaired Financing Receivables with No Related Allowance
Financing Receivable, Impaired
Unpaid Principal Balance	108		107
Recorded Investment	101		99
Commercial Mortgage Loans, Owner Occupied | Commercial Portfolio Segment | Impaired Financing Receivables with Related Allowance
Financing Receivable, Impaired
Unpaid Principal Balance	43	[3]	54
Recorded Investment	33	[3]	43
Allowance	5	[3]	5
Commercial Mortgage Loans, Non Owner Occupied | Commercial Portfolio Segment | Impaired Financing Receivables with No Related Allowance
Financing Receivable, Impaired
Unpaid Principal Balance	248		209
Recorded Investment	229		199
Commercial Mortgage Loans, Non Owner Occupied | Commercial Portfolio Segment | Impaired Financing Receivables with Related Allowance
Financing Receivable, Impaired
Unpaid Principal Balance	114		215
Recorded Investment	86		160
Allowance	9		16
Commercial Construction | Commercial Portfolio Segment | Impaired Financing Receivables with No Related Allowance
Financing Receivable, Impaired
Unpaid Principal Balance	86		109
Recorded Investment	58		67
Commercial Construction | Commercial Portfolio Segment | Impaired Financing Receivables with Related Allowance
Financing Receivable, Impaired
Unpaid Principal Balance	68		48
Recorded Investment	55		37
Allowance	4		5
Commercial Leases | Commercial Portfolio Segment | Impaired Financing Receivables with No Related Allowance
Financing Receivable, Impaired
Unpaid Principal Balance	10		5
Recorded Investment	10		5
Commercial Leases | Commercial Portfolio Segment | Impaired Financing Receivables with Related Allowance
Financing Receivable, Impaired
Unpaid Principal Balance	1		8
Recorded Investment	1		8
Allowance			5
Home Equity | Consumer Portfolio Segment | Impaired Financing Receivables with No Related Allowance
Financing Receivable, Impaired
Unpaid Principal Balance	41		40
Recorded Investment	38		39
Home Equity | Consumer Portfolio Segment | Impaired Financing Receivables with Related Allowance
Financing Receivable, Impaired
Unpaid Principal Balance	397		400
Recorded Investment	393		396
Allowance	42		46
Automobile Loans | Consumer Portfolio Segment | Impaired Financing Receivables with No Related Allowance
Financing Receivable, Impaired
Unpaid Principal Balance	3		3
Recorded Investment	3		3
Automobile Loans | Consumer Portfolio Segment | Impaired Financing Receivables with Related Allowance
Financing Receivable, Impaired
Unpaid Principal Balance	26		31
Recorded Investment	26		30
Allowance	6		4
Credit Card | Consumer Portfolio Segment | Impaired Financing Receivables with Related Allowance
Financing Receivable, Impaired
Unpaid Principal Balance	65		74
Recorded Investment	65		74
Allowance	11		12
Consumer Other Financing Receivable | Consumer Portfolio Segment | Impaired Financing Receivables with Related Allowance
Financing Receivable, Impaired
Unpaid Principal Balance	2		2
Recorded Investment	$ 2		$ 2

[1] Includes $475, $1,201 and $470, respectively, of commercial, residential mortgage and consumer TDRs on accrual status; $196, $105 and $57, respectively, of commercial, residential mortgage and consumer TDRs on nonaccrual status.

[2] Includes $431, $1,175 and $480, respectively, of commercial, residential mortgage and consumer TDRs on accrual status;$177, $123 and $64, respectively, of commercial, residential mortgage and consumer TDRs on nonaccrual status.

[3] Excludes five restructured nonaccrual loans at June 30, 2013 associated with a consolidated variable interest entity, in which the Bancorp has no continuing credit risk due to the risk being assumed by a third party, with an unpaid principal balance of $29, a recorded investment of $29, and an allowance of $11.