Summary of the Credit Risk Profile of the Bancorp's Residential Mortgage and Consumer Portfolio Segments by Class (Detail) - USD ($) $ in Millions		Sep. 30, 2015		Dec. 31, 2014
Total loans and leases		$ 93,401	[1]	$ 89,976	[2]
Home Equity | Consumer Portfolio Segment
Total loans and leases		8,427		8,886
Automobile Loans | Consumer Portfolio Segment
Total loans and leases		11,826		12,037
Credit Card | Consumer Portfolio Segment
Total loans and leases		2,229		2,401
Other consumer loans and leases | Consumer Portfolio Segment
Total loans and leases		692		418
Performing Financing Receivable
Total loans and leases		36,221		35,811
Performing Financing Receivable | Residential Mortgage
Total loans and leases	[3]	13,164		12,204
Performing Financing Receivable | Home Equity
Total loans and leases		8,345		8,793
Performing Financing Receivable | Automobile Loans | Consumer Portfolio Segment
Total loans and leases		11,824		12,036
Performing Financing Receivable | Credit Card | Consumer Portfolio Segment
Total loans and leases		2,196		2,360
Performing Financing Receivable | Other consumer loans and leases | Consumer Portfolio Segment
Total loans and leases		692		418
Nonperforming Financing Receivable
Total loans and leases		172		212
Nonperforming Financing Receivable | Residential Mortgage
Total loans and leases	[3]	55		77
Nonperforming Financing Receivable | Home Equity
Total loans and leases		82		93
Nonperforming Financing Receivable | Automobile Loans | Consumer Portfolio Segment
Total loans and leases		2		1
Nonperforming Financing Receivable | Credit Card | Consumer Portfolio Segment
Total loans and leases		$ 33		$ 41

[1] Excludes $173 of residential mortgage loans measured at fair value.

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

[3] Excludes $173 and $108 of loans measured at fair value at September 30, 2015 and December 31, 2014, respectively.