Quarterly report pursuant to Section 13 or 15(d)

BENEFIT PLANS - Fair Value of Plan Assets (Details)

v3.5.0.2
BENEFIT PLANS - Fair Value of Plan Assets (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Summary of plan assets investments    
Fair value of plan assets $ 614,560 $ 594,217
Fair value of plan assets, Percentage 100.00% 100.00%
Huntington funds - money market    
Summary of plan assets investments    
Fair value of plan assets $ 5,841 $ 15,590
Fair value of plan assets, Percentage 1.00% 3.00%
Corporate Obligations    
Summary of plan assets investments    
Fair value of plan assets $ 220,504 $ 205,081
Fair value of plan assets, Percentage 36.00% 34.00%
U.S. Government Obligations    
Summary of plan assets investments    
Fair value of plan assets $ 65,827 $ 64,456
Fair value of plan assets, Percentage 11.00% 11.00%
Mutual funds - fixed income    
Summary of plan assets investments    
Fair value of plan assets $ 26,661 $ 32,874
Fair value of plan assets, Percentage 4.00% 6.00%
U.S. Government Agencies    
Summary of plan assets investments    
Fair value of plan assets $ 7,904 $ 6,979
Fair value of plan assets, Percentage 1.00% 1.00%
Mutual Funds - equities    
Summary of plan assets investments    
Fair value of plan assets $ 129,997 $ 136,026
Fair value of plan assets, Percentage 21.00% 23.00%
Common Stock    
Summary of plan assets investments    
Fair value of plan assets $ 135,757 $ 120,046
Fair value of plan assets, Percentage 22.00% 20.00%
Exchange Traded Funds    
Summary of plan assets investments    
Fair value of plan assets $ 6,574 $ 6,530
Fair value of plan assets, Percentage 1.00% 1.00%
Limited Partnerships    
Summary of plan assets investments    
Fair value of plan assets $ 10,395 $ 6,635
Fair value of plan assets, Percentage 2.00% 1.00%
EquitySecuritiesMember - Huntington Preferred Stock    
Summary of plan assets investments    
Fair value of plan assets $ 5,100 $ 0
Fair value of plan assets, Percentage 1.00%