Classifications of Consolidated VIE Assets, Liabilities and Noncontrolling Interest Included in the Bancorp's Consolidated Balance Sheets (Detail) - USD ($) $ in Millions		Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013	Dec. 31, 2012
Assets
Cash and due from banks		$ 2,540	[1]	$ 3,091	[1]	$ 3,178	$ 2,441
Commercial mortgage loans		6,957		7,399
Automobile loans		11,493		12,037
ALLL		(1,272)	[1]	(1,322)	[1]	$ (1,582)	$ (1,854)
Other assets	[1]	7,999		8,241
Liabilities
Other liabilities	[1]	2,341		2,642
Long-term debt	[1]	15,844		14,967
Noncontrolling interests		31		39
Variable Interest Entity, Primary Beneficiary
Assets
Cash and due from banks		152		179
Commercial mortgage loans		47		47
Automobile loans		2,490		3,331
ALLL		(28)		(22)
Other assets		20		25
Total Assets		2,681		3,560
Liabilities
Other liabilities		3		5
Long-term debt		2,493		3,434
Total liabilities		2,496		3,439
Noncontrolling interests		31		39
Variable Interest Entity, Primary Beneficiary | Automobile Loan Securitizations
Assets
Cash and due from banks		151		178
Automobile loans		2,490		3,331
ALLL		(11)		(11)
Other assets		20		23
Total Assets		2,650		3,521
Liabilities
Other liabilities		3		5
Long-term debt		2,493		3,434
Total liabilities		2,496		3,439
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)		(11)
Other assets				2
Total Assets		31		39
Liabilities
Noncontrolling interests		$ 31		$ 39

[1] Includes $152 and $179 of cash and due from banks, $2,537 and $3,378 of portfolio loans and leases, $(28) and $(22) of ALLL, $20 and $25 of other assets, $3 and $5 of other liabilities and $2,493 and $3,434 of long-term debt from consolidated VIEs that are included in their respective captions above at December 31, 2015 and 2014, respectively. For further information, refer to Note 11.