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	Mar. 31, 2015		Dec. 31, 2014
Total loans and leases	$ 91,118	[1]	$ 89,976	[2]
Home Equity | Consumer Portfolio Segment
Total loans and leases	8,714		8,886
Automobile Loans | Consumer Portfolio Segment
Total loans and leases	11,873		12,037
Credit Card | Consumer Portfolio Segment
Total loans and leases	2,291		2,401
Consumer Other Financing Receivable | Consumer Portfolio Segment
Total loans and leases	448		418
Performing Financing Receivable
Total loans and leases	35,568		35,811
Performing Financing Receivable | Residential Mortgage
Total loans and leases	12,372	[3]	12,204	[3]
Performing Financing Receivable | Home Equity
Total loans and leases	8,624		8,793
Performing Financing Receivable | Automobile Loans
Total loans and leases	11,871		12,036
Performing Financing Receivable | Credit Card
Total loans and leases	2,253		2,360
Performing Financing Receivable | Consumer Other Financing Receivable
Total loans and leases	448		418
Nonperforming Financing Receivable
Total loans and leases	201		212
Nonperforming Financing Receivable | Residential Mortgage
Total loans and leases	71	[3]	77	[3]
Nonperforming Financing Receivable | Home Equity
Total loans and leases	90		93
Nonperforming Financing Receivable | Automobile Loans
Total loans and leases	2		1
Nonperforming Financing Receivable | Credit Card
Total loans and leases	$ 38		$ 41

[1] Excludes $126 of loans measured at fair value.

[2] Excludes $108 of loans measured at fair value.

[3] Excludes $126 and $108 of loans measured at fair value at March 31, 2015 and December 31, 2014, respectively.