Classifications of Consolidated VIE Assets, Liabilities and Noncontrolling Interest Included in the Bancorp's Consolidated Balance Sheets (Detail) - USD ($) $ in Millions		Mar. 31, 2016		Dec. 31, 2015		Mar. 31, 2015	Dec. 31, 2014
Assets
Cash and due from banks		$ 2,298	[1]	$ 2,540	[1]	$ 2,920	$ 3,091
Commercial mortgage loans		6,864		6,957
Automobile loans		11,128		11,493
ALLL		(1,295)	[1]	(1,272)	[1]	$ (1,300)	$ (1,322)
Other assets	[1],[2]	8,846		7,965
Liabilities
Other liabilities	[1]	2,627		2,341
Long-term debt	[1],[2]	15,305		15,810
Noncontrolling interests		32		31
Variable Interest Entity, Primary Beneficiary
Assets
Cash and due from banks		147		152
Commercial mortgage loans		47		47
Automobile loans		2,131		2,490
ALLL		(27)		(28)
Other assets		11		14
Total Assets		2,309		2,675
Liabilities
Other liabilities		4		3
Long-term debt		2,102		2,487
Total liabilities		2,106		2,490
Noncontrolling interests		32		31
Variable Interest Entity, Primary Beneficiary | Automobile Loans
Assets
Cash and due from banks		146		151
Automobile loans		2,131		2,490
ALLL		(10)		(11)
Other assets		10		14
Total Assets		2,277		2,644
Liabilities
Other liabilities		4		3
Long-term debt		2,102		2,487
Total liabilities		2,106		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		(17)		(17)
Other assets		1
Total Assets		32		31
Liabilities
Noncontrolling interests		$ 32		$ 31

[1] Includes $147 and $152 of cash and due from banks, $2,178 and $2,537 of portfolio loans and leases, $(27) and $(28) of ALLL, $11 and $14 of other assets, $4 and $3 of other liabilities, and $2,102 and $2,487 of long-term debt from consolidated VIEs that are included in their respective captions above at March 31, 2016 and December 31, 2015, respectively. For further information refer to Note 9.

[2] Upon adoption of ASU 2015-03 on January 1, 2016, the December 31, 2015 Condensed Consolidated Balance Sheets were 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.