Classifications of Consolidated VIE Assets, Liabilities and Noncontrolling Interest Included in the Bancorp's Consolidated Balance Sheets (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013		Mar. 31, 2013	Dec. 31, 2012
Assets
Cash and due from banks	$ 3,153	[1]	$ 3,178	[1]	$ 2,186	$ 2,441
Other Short-term Investments	2,202	[1]	5,116	[1]
Commercial mortgage loans	7,958	[1]	8,066	[1]
Automobile loans	12,088	[1]	11,984	[1]
Allowance for loan and lease losses	(1,483)	[1]	(1,582)	[1]	(1,783)	(1,854)
Other assets	7,355	[1]	8,358	[1]
Total Assets	129,654		130,443		121,382
Liabilities
Other liabilities	2,029	[1]	3,487	[1]
Long-term debt	11,233	[1]	9,633	[1]
Total Liabilities	114,790		115,817
Noncontrolling interests	38		37
Variable Interest Entity, Primary Beneficiary
Assets
Cash and due from banks	102		49
Other Short-term Investments	7
Commercial mortgage loans	48		48
Automobile loans	2,031	[2]	1,010	[2]
Allowance for loan and lease losses	(18)		(15)
Other assets	23		13
Total Assets	2,193		1,105
Liabilities
Other liabilities	3		1
Long-term debt	2,119		1,048
Total Liabilities	2,122		1,049
Noncontrolling interests	38		37
Variable Interest Entity, Primary Beneficiary | Automobile Loan
Assets
Cash and due from banks	102		49
Other Short-term Investments	7
Automobile loans	2,031	[2]	1,010	[2]
Allowance for loan and lease losses	(5)		(2)
Other assets	20		11
Total Assets	2,155		1,068
Liabilities
Other liabilities	3		1
Long-term debt	2,119		1,048
Total Liabilities	2,122		1,049
Variable Interest Entity, Primary Beneficiary | Fifth Third Community Development Corporation Investments
Assets
Commercial mortgage loans	48		48
Allowance for loan and lease losses	(13)		(13)
Other assets	3		2
Total Assets	38		37
Liabilities
Noncontrolling interests	$ 38		$ 37

[1] Includes $102 and $49 of cash and due from banks, $7 and $0 of other short-term investments, $48 and $48 of commercial mortgage loans, $2,031 and $1,010 of automobile loans, $(18) and $(15) of ALLL, $23 and $13 of other assets, $3 and $1 of other liabilities, and $2,119 and $1,048 of long-term debt from consolidated VIEs that are included in their respective captions above at March 31, 2014 and December 31, 2013, respectively. See Note 8.

[2] Net of $98 and $52 of unamortized fees and discounts at March 31, 2014 and December 31, 2013, respectively.