Credit Quality (Summary of the Bancorp's Nonperforming Loans and Leases by Class) (Parenthetical) (Detail) - USD ($) $ in Millions		Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Modifications
Loans and leases held for sale	[1]	$ 607	$ 492
Portfolio loans and leases	[2],[3]	95,265	91,970
Variable Interest Entity, Primary Beneficiary
Financing Receivable, Modifications
Portfolio loans and leases		668	1,297
Commercial Portfolio Segment
Financing Receivable, Modifications
Portfolio loans and leases		59,571	56,395
Nonperforming Financing Receivable
Financing Receivable, Modifications
Loans and leases held for sale		16	6
Nonperforming Financing Receivable | Government Insured | Commercial Portfolio Segment
Financing Receivable, Modifications
Restructured nonaccrual loans and leases		2	3
Nonperforming Financing Receivable | Government Insured | Commercial Portfolio Segment | Small Business Administration
Financing Receivable, Modifications
Portfolio loans and leases		$ 6	$ 3

[1] Includes $ 537 and $ 399 of residential mortgage loans held for sale measured at fair value and $7 and $0 of commercial loans held for sale measured at fair value at December 31, 2018 and 2017 , respectively.

[2] Includes $ 179 and $ 137 of residential mortgage loans measured at fair value at December 31, 2018 and 2017 , respectively.

[3] Includes $ 40 and $ 62 of other short-term investments, $ 668 and $ 1,297 of portfolio loans and leases, $ (4) and $ (6) of ALLL, $ 5 and $ 7 of other assets, $ 1 and $ 2 of other liabilities and $ 606 and $ 1,190 of long-term debt from consolidated VIEs that are included in their respec tive captions above at December 31, 2018 and 2017 , respectively. For further information, refer to Note 10 .