VIE (Classifications of Consolidated VIE Assets, Liabilities and Noncontrolling Interest Included in the Bancorp's Consolidated Balance Sheets) (Detail) - USD ($) $ in Millions		Jun. 30, 2018		Mar. 31, 2018	[1],[2]	Dec. 31, 2017		Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	[1]
Assets
Cash and due from banks		$ 2,052				$ 2,514		$ 2,203		$ 2,392
Other short-term investments	[1]	1,636				2,753
Commercial mortgage loans		6,625				6,604
Automobile loans		8,938				9,112
ALLL		(1,077)	[1],[2]	$ (1,138)		(1,196)	[1],[3]	$ (1,226)	$ (1,238)	$ (1,253)	[3]
Other assets	[1]	6,662				6,975
Liabilities
Other liabilities	[1]	2,425				2,144
Long-term debt	[1]	14,321				14,904
Noncontrolling interests		20				20
Variable Interest Entity, Primary Beneficiary
Assets
Other short-term investments		47				62
Commercial mortgage loans		20				20
Automobile loans		888				1,277
ALLL		(5)				(6)
Other assets		5				7
Total Assets		955				1,360
Liabilities
Other liabilities		2				2
Long-term debt		830				1,190
Total liabilities		832				1,192
Noncontrolling interests		20				20
Variable Interest Entity, Primary Beneficiary | Automobile Loans
Assets
Other short-term investments		47				62
Commercial mortgage loans		0				0
Automobile loans		888				1,277
ALLL		(5)				(6)
Other assets		5				7
Total Assets		935				1,340
Liabilities
Other liabilities		2				2
Long-term debt		830				1,190
Total liabilities		832				1,192
Noncontrolling interests		0				0
Variable Interest Entity, Primary Beneficiary | Fifth Third Community Development Corporation Investments
Assets
Other short-term investments		0				0
Commercial mortgage loans		20				20
Automobile loans		0				0
ALLL		0				0
Other assets		0				0
Total Assets		20				20
Liabilities
Other liabilities		0				0
Long-term debt		0				0
Total liabilities		0				0
Noncontrolling interests		$ 20				$ 20

[1] Includes $ 47 and $ 62 of other short-term investments , $ 908 and $ 1,297 of portfolio loans and leases, $ (5) and $ (6) of ALLL, $ 5 and $ 7 of other assets, $ 2 and $ 2 of other liabilities, and $ 830 and $ 1,190 of long-term debt from consolidated VIEs that are included in their respe ctive captions above at June 30, 2018 and December 31, 2017 , respectively. For further information refer to Note 9 .

[2] Includes $ 1 related to leveraged leases at June 30, 2018 .

[3] Includes $ 1 related to leveraged leases at December 31, 2017 .