Summarizes the Bancorp's Recorded Investment in Portfolio Loans and Leases by Age and Class (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans and Leases	$ 87,534	[1],[2]	$ 84,381	[1],[3]
30-89 Days Past Due	345	[1],[2]	413	[1],[3]
90 Days and Greater	643	[1],[2]	912	[1],[3]
Total Past Due	988	[2]	1,325	[3]
Total loans and leases	88,522	[2],[4]	85,706	[3],[5]
90-Days past Due and Still Accruing	103	[2]	195	[3]
Commercial Portfolio Segment
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans and leases	52,046		49,388
Commercial Portfolio Segment | Commercial and Industrial Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans and Leases	39,118	[1]	35,826	[1]
30-89 Days Past Due	53	[1]	46	[1]
90 Days and Greater	145	[1]	166	[1]
Total Past Due	198		212
Total loans and leases	39,316		36,038
90-Days past Due and Still Accruing			1
Commercial Portfolio Segment | Commercial Mortgage Loans, Owner Occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans and Leases	4,423	[1]	4,752	[1]
30-89 Days Past Due	15	[1]	29	[1]
90 Days and Greater	69	[1]	95	[1]
Total Past Due	84		124
Total loans and leases	4,507		4,876
90-Days past Due and Still Accruing			22
Commercial Portfolio Segment | Commercial Mortgage Loans, Non Owner Occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans and Leases	3,515	[1]	4,094	[1]
30-89 Days Past Due	9	[1]	21	[1]
90 Days and Greater	35	[1]	112	[1]
Total Past Due	44		133
Total loans and leases	3,559		4,227
Commercial Portfolio Segment | Commercial Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans and Leases	1,010	[1]	622	[1]
90 Days and Greater	29	[1]	76	[1]
Total Past Due	29		76
Total loans and leases	1,039		698
90-Days past Due and Still Accruing			1
Commercial Portfolio Segment | Commercial Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans and Leases	3,620	[1]	3,546	[1]
30-89 Days Past Due			2	[1]
90 Days and Greater	5	[1]	1	[1]
Total Past Due	5		3
Total loans and leases	3,625		3,549
Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans and Leases	12,284	[1],[2],[6]	11,547	[1],[3],[7]
30-89 Days Past Due	73	[1],[2],[6]	87	[1],[3],[7]
90 Days and Greater	231	[1],[2],[6]	307	[1],[3],[7]
Total Past Due	304	[2],[6]	394	[3],[7]
Total loans and leases	12,588	[2],[6]	11,941	[3],[7]
90-Days past Due and Still Accruing	66	[2],[6]	75	[3],[7]
Consumer Portfolio Segment | Home Equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans and Leases	9,058	[1]	9,782	[1]
30-89 Days Past Due	102	[1]	126	[1]
90 Days and Greater	86	[1]	110	[1]
Total Past Due	188		236
Total loans and leases	9,246		10,018
90-Days past Due and Still Accruing			58
Consumer Portfolio Segment | Automobile Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans and Leases	11,919	[1]	11,900	[1]
30-89 Days Past Due	55	[1]	62	[1]
90 Days and Greater	10	[1]	10	[1]
Total Past Due	65		72
Total loans and leases	11,984		11,972
90-Days past Due and Still Accruing	8		8
Consumer Portfolio Segment | Credit Card
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans and Leases	2,225	[1]	2,025	[1]
30-89 Days Past Due	36	[1]	38	[1]
90 Days and Greater	33	[1]	34	[1]
Total Past Due	69		72
Total loans and leases	2,294		2,097
90-Days past Due and Still Accruing	29		30
Consumer Portfolio Segment | Consumer Other Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans and Leases	362	[1]	287	[1]
30-89 Days Past Due	2	[1]	2	[1]
90 Days and Greater			1	[1]
Total Past Due	2		3
Total loans and leases	$ 364		$ 290

[1] Includes accrual and nonaccrual loans and leases.

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

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

[4] Excludes $92 of residential mortgage loans measured at fair value, and includes $881 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] Information for current residential mortgage loans includes advances made pursuant to servicing agreements for GNMA mortgage pools whose repayments are insured by the Federal Housing Administration or guaranteed by the Department of Veterans Affairs. As of December 31, 2013, $81 of these loans were 30-89 days past due and $378 were 90 days or more past due. The Bancorp recognized $5 million of losses for the year ended December 31, 2013 due to claim denials and curtailments associated with these advances.

[7] Information for current residential mortgage loans includes advances made pursuant to servicing agreements for GNMA mortgage pools whose repayments are insured by the Federal Housing Administration or guaranteed by the Department of Veterans Affairs. As of December 31, 2012, $80 of these loans were 30-89 days past due and $414 were 90 days or more past due. The Bancorp recognized $2 million of losses for the year ended December 31, 2012 due to claim denials and curtailments associated with these advances.