Assets and Liabilities Related to Non-consolidated VIEs and Maximum Exposure to Losses (Detail) (Variable Interest Entity, Not Primary Beneficiary, USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Fifth Third Community Development Corporation Investments
Variable Interest Entity
Total Assets	$ 1,417	$ 1,436
Total liabilities	364	407
Maximum Exposure	1,417	1,436
Private Equity Funds
Variable Interest Entity
Total Assets	208	204
Maximum Exposure	299	294
Loans Receivable
Variable Interest Entity
Total Assets	1,847	1,830
Maximum Exposure	2,996	2,792
Automobile Loan Securitizations
Variable Interest Entity
Total Assets	3	4
Maximum Exposure	3	4
Restructured Loans
Variable Interest Entity
Total Assets		1
Maximum Exposure		$ 1