Credit Quality (Summary of the Credit Risk Profile of the Bancorp's Residential Mortgage and Consumer Portfolio Segments by Class) (Detail) - USD ($) $ in Millions		Dec. 31, 2016		Dec. 31, 2015
Total loans and leases		$ 91,955	[1]	$ 92,415	[2]
Home Equity | Consumer Portfolio Segment
Total loans and leases		7,695		8,301
Automobile Loans | Consumer Portfolio Segment
Total loans and leases		9,983		11,493
Credit Card | Consumer Portfolio Segment
Total loans and leases		2,237		2,259
Other Consumer Loans and Leases | Consumer Portfolio Segment
Total loans and leases		680		657
Performing Financing Receivable
Total loans and leases	[3]	35,366		36,094
Performing Financing Receivable | Residential Mortgage | Residential Portfolio Segment
Total loans and leases	[3]	14,874		13,498
Performing Financing Receivable | Home Equity | Consumer Portfolio Segment
Total loans and leases		7,622		8,222
Performing Financing Receivable | Automobile Loans | Consumer Portfolio Segment
Total loans and leases		9,981		11,491
Performing Financing Receivable | Credit Card | Consumer Portfolio Segment
Total loans and leases		2,209		2,226
Performing Financing Receivable | Other Consumer Loans and Leases | Consumer Portfolio Segment
Total loans and leases		680		657
Nonperforming Financing Receivable
Total loans and leases	[3]	137		165
Nonperforming Financing Receivable | Residential Mortgage | Residential Portfolio Segment
Total loans and leases	[3]	34		51
Nonperforming Financing Receivable | Home Equity | Consumer Portfolio Segment
Total loans and leases		73		79
Nonperforming Financing Receivable | Automobile Loans | Consumer Portfolio Segment
Total loans and leases		2		2
Nonperforming Financing Receivable | Credit Card | Consumer Portfolio Segment
Total loans and leases		28		33
Nonperforming Financing Receivable | Other Consumer Loans and Leases | Consumer Portfolio Segment
Total loans and leases		$ 0		$ 0

[1] Excludes $ 143 of residential mortgage loans measured at fair value at December 31, 2016 .

[2] Excludes $ 167 of residential mortgage loans measured at fair value at December 31, 2015 .

[3] (a) Excludes $ 143 and $ 167 of loans measured at fair value at December 31, 2016 and 2015 , respectively