VIE (Classifications of Consolidated VIE Assets, Liabilities and Noncontrolling Interest Included in the Bancorp's Consolidated Balance Sheets) (Detail) - USD ($) $ in Millions		Jun. 30, 2016		Mar. 31, 2016	Dec. 31, 2015		Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014
Assets
Cash and due from banks		$ 2,359	[1]		$ 2,540	[1]	$ 2,785		$ 3,091
Commercial mortgage loans		6,875			6,957
Automobile loans		10,671			11,493
ALLL		(1,299)	[1],[2]	$ (1,295)	(1,272)	[1],[3]	$ (1,293)	$ (1,300)	$ (1,322)
Other assets	[1],[4]	8,096			7,965
Liabilities
Other liabilities	[1]	2,495			2,341
Long-term debt	[1],[4]	16,231			15,810
Noncontrolling interests		28			31
Variable Interest Entity, Primary Beneficiary
Assets
Cash and due from banks		128			152
Commercial mortgage loans		47			47
Automobile loans		1,806			2,490
ALLL		(28)			(28)
Other assets		11			14
Total Assets		1,964			2,675
Liabilities
Other liabilities		3			3
Long-term debt		1,744			2,487
Total liabilities		1,747			2,490
Noncontrolling interests		28			31
Variable Interest Entity, Primary Beneficiary | Automobile Loans
Assets
Cash and due from banks		127			151
Automobile loans		1,806			2,490
ALLL		(8)			(11)
Other assets		11			14
Total Assets		1,936			2,644
Liabilities
Other liabilities		3			3
Long-term debt		1,744			2,487
Total liabilities		1,747			2,490
Variable Interest Entity, Primary Beneficiary | Fifth Third Community Development Corporation Investments
Assets
Cash and due from banks		1			1
Commercial mortgage loans		47			47
ALLL		(20)			(17)
Total Assets		28			31
Liabilities
Noncontrolling interests		$ 28			$ 31

[1] Includes $ 128 and $ 152 of cash and due from banks, $ 1,853 and $ 2,537 of portfolio loans and leases , $ (28) and $ (28) of ALLL, $ 11 and $ 14 of other assets, $ 3 and $ 3 of other liabilities , and $ 1,744 and $ 2,487 of long-term debt from consolidated VIEs that are included in their respective captions above at June 30, 2016 and December 31, 2015 , respectively. For further information refer to Note 9 .

[2] Includes $ 3 related to leveraged leases at June 30, 2016 .

[3] Includes $ 5 related to leveraged leases at December 31, 2015 .

[4] Upon adoption of ASU 2015-03 on January 1, 2016, the December 31, 2015 Condensed Consolidated Balance Sheet was adjusted to reflect the reclassification of $34 million of debt issuance costs from other assets to long-term debt. For further information refer to Note 3.