Credit Quality (Summary of the Credit Risk Profile of the Bancorp's Residential Mortgage and Consumer Portfolio Segments by Class) (Detail) - USD ($) $ in Millions		Sep. 30, 2017		Dec. 31, 2016
Total loans and leases		$ 91,743	[1],[2]	$ 91,955	[3],[4]
Home Equity | Consumer Portfolio Segment
Total loans and leases		7,143		7,695
Automobile Loans | Consumer Portfolio Segment
Total loans and leases		9,236		9,983
Credit Card | Consumer Portfolio Segment
Total loans and leases		2,168		2,237
Other consumer loans | Consumer Portfolio Segment
Total loans and leases		1,179		680
Performing Financing Receivable
Total loans and leases	[5]	35,041		35,366
Performing Financing Receivable | Residential Mortgage | Residential Mortgage Loans
Total loans and leases	[5]	15,417		14,874
Performing Financing Receivable | Home Equity | Consumer Portfolio Segment
Total loans and leases		7,069		7,622
Performing Financing Receivable | Automobile Loans | Consumer Portfolio Segment
Total loans and leases		9,235		9,981
Performing Financing Receivable | Credit Card | Consumer Portfolio Segment
Total loans and leases		2,141		2,209
Performing Financing Receivable | Other consumer loans | Consumer Portfolio Segment
Total loans and leases		1,179		680
Nonperforming Financing Receivable
Total loans and leases	[5]	133		137
Nonperforming Financing Receivable | Residential Mortgage | Residential Mortgage Loans
Total loans and leases	[5]	31		34
Nonperforming Financing Receivable | Home Equity | Consumer Portfolio Segment
Total loans and leases		74		73
Nonperforming Financing Receivable | Automobile Loans | Consumer Portfolio Segment
Total loans and leases		1		2
Nonperforming Financing Receivable | Credit Card | Consumer Portfolio Segment
Total loans and leases		27		28
Nonperforming Financing Receivable | Other consumer loans | Consumer Portfolio Segment
Total loans and leases		$ 0		$ 0

[1] Excludes $ 140 of residential mortgage loans measured at fair value and includes $ 7 09 of leveraged leases, net of unearned income at September 30, 2017 .

[2] Excludes $ 140 of residential mortgage loans measured at fair value at September 30, 2017 .

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

[4] Excludes $ 143 of residential mortga ge loans measured at fair value and includes $ 701 of leveraged leases, net of unearned income at December 31, 2016 .

[5] (a) Excludes $ 140 and $ 143 of residential mortgage loans measured at fair value at September 30, 2017 and December 31, 2016 , respectively.