Classifications of Consolidated VIE Assets, Liabilities and Noncontrolling Interest Included in the Bancorp's Consolidated Balance Sheets (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011	Dec. 31, 2010
Assets
Cash and due from banks	$ 3,178	[1]	$ 2,441	[1]	$ 2,663	$ 2,159
Commercial mortgage loans	8,066	[1]	9,103	[1]
Automobile loans	11,984	[1]	11,972	[1]
Allowance for loan and lease losses	(1,582)	[1]	(1,854)	[1]	(2,255)	(3,004)
Other assets	8,358	[1]	8,204	[1]
Total Assets	130,443		121,894		116,967
Liabilities
Other liabilities	3,487	[1]	2,639	[1]
Long-term debt	9,633	[1]	7,085	[1]
Total liabilities	115,817		108,130
Noncontrolling interests	37		48
Variable Interest Entity, Primary Beneficiary
Assets
Cash and due from banks	49
Commercial mortgage loans	48		50
Automobile loans	1,010	[2]
Allowance for loan and lease losses	(15)		(5)
Other assets	13		3
Total Assets	1,105		48
Liabilities
Other liabilities	1
Long-term debt	1,048
Total liabilities	1,049
Noncontrolling interests	37		48
Variable Interest Entity, Primary Beneficiary | Automobile Loan
Assets
Cash and due from banks	49
Automobile loans	1,010	[2]
Allowance for loan and lease losses	(2)
Other assets	11
Total Assets	1,068
Liabilities
Other liabilities	1
Long-term debt	1,048
Total liabilities	1,049
Variable Interest Entity, Primary Beneficiary | Fifth Third Community Development Corporation Investments [Member]
Assets
Commercial mortgage loans	48		50
Allowance for loan and lease losses	(13)		(5)
Other assets	2		3
Total Assets	37		48
Liabilities
Noncontrolling interests	$ 37		$ 48

[1] At December 31, 2013 and 2012, includes $49 and $0 of cash and due from banks, $48 and $50 of commercial mortgage loans, $ 1,010 and $0 of automobile loans, $(15) and $(5) of ALLL, $13 and $3 of other assets, $1 and $0 of other liabilities, $ 1,048 and $0 of long-term debt from consolidated VIEs that are included in their respective captions. See Note 10.

[2] Net of $52 of unamortized fees and discounts.